3130BC - Measurement Daytronic - Free user manual and instructions

USER MANUAL 3130BC Daytronic

3130 with option C & G

LVDT CONDITIONER

INSTRUCTION MANUAL

-187.35 -182.35 +19.15 +2.145 +19.35 -182.55 -184.30 -99.25

3000
Instrument Series

NOTE

The 110 vac primary power fuse for the Model 3130 is now rated at 0.5 amp, and its part number is now "29049."

Copyright © 1996, Daytronic Corporation. All rights reserved.

No part of this document may be reprinted, reproduced, or used in any form or by any electronic, mechanical, or other means, including photocopying and recording, or in any information storage and retrieval system, without permission in writing from Daytronic Corporation. All specifications are subject to change without notice.

MODEL

3130

LVDT CONDITIONER

INSTRUCTION MANUAL

Daytronic Corporation

TABLE OF CONTENTS

Section

Page

1 Description 1
2 Installation and Cabling 3
3 Calibration 14
4 Block Diagram Description 16
5 Verification of Normal Operation 20

LIST OF ILLUSTRATIONS

Figure

Page

1 Model 3130 LVDT Conditioner 1
2 Instrument Mounting Dimensions 6
3 Instrument Panel Mounting 7
4 I/O Wiring Data 9
5 Phase Control Select Terminals 11
6 Internal Operating Controls 11
7 Front Panel Description 15
8 Block Diagram 21

LIST OF TABLES

Table

Page

1 Specifications 2
2 Operational Settings for Daytronic Transducers 12
3 Linearization Scaling For Daytronic Transducers 13

PLEASE NOTE: Sections 6 and 7, Figures 9 and 10, and Table 4 have been removed from this manual.

If you need information regarding specific 3130 components and circuitry, please contact the Daytronic Service Department at [phone].

INSTRUCTION MANUAL MODEL 3130 LVDT CONDITIONER

1. DESCRIPTION

The Model 3130 is a conditioner-amplifier for use with 3-wire variable reluctance transducers or 5- and 7-wire linear variable differential transformer (lvdt) transducers that are wired series opposed. A 3-kHz excitation voltage that is amplitude regulated is supplied to the transducer by the instrument. The resultant signal is demodulated by a phase-sensitive (synchronous) amplifier/demodulator circuit so that both direction and displacement of the core are determined. The Model 3130 is shown in Figure 1 and the specifications are given in Table 1.

DAYTRONIC ZERO CAL SPAN - LVDT CONDITIONER Model 3130

Figure 1. Model 3130 LVDT Conditioner

Table 1. Specifications

Transducers: 3-wire variable reluctance, 5-wire (series opposed), and 7-wire lvdt types suitable for operation with 3-kHz excitation frequency and having primary impedance greater than 80 ohms, including all Daytronic lvdt transducers.

Excitation: 3-kHz with optional remote sensing for long cables.

Span Adjustment: 12-turn Coarse and Fine controls plus 5 internal Range multiplier switches. Nominal maximum sensitivity is 10 millivolts (in-phase component) for full-scale output.

Analog Outputs: Two analog outputs available; 0 to ± 5 volts with 50% overrange, 5 milliamperes maximum. Bandpass is dc-to-2 Hz or dc-to-400 Hz, depending on output used. Active low-pass filters provide for rolloff of 60 dB per decade above cutoff frequency. Full-scale slew time is 1.4/f seconds, where f is the cutoff frequency.

Output Ripple and Noise: 0.15% of full scale (rms) maximum for 400-Hz output; 0.02% of full scale (rms) for 2-Hz output.

Dimensions: 1.7 H x 4.41 W x 8.5 D (inches)

Operating Temperature Range: 0 to + 130 degrees F.

Power Requirements: 105 to 135 volts ac, 50 to 400 Hz at 5 watts maximum.

The instrument contains the necessary ZERO, SPAN, AND CAL(ibration) controls for zeroing and calibrating the analog output. An internal calibration reference is provided that can be used, following initial calibration by transducer displacement, to quickly verify calibration at any time or to recalibrate the instrument with a known calibration factor. A front-panel button applies the calibration

signal to the signal conditioner (and disconnects the transducer input). Calibration can also be checked remotely through Remote Cal terminals on the instrument I/O connector.

Internal Range switches provide a wide sensitivity selection, allowing full-scale output for input displacements as small as ±0.001 inch ( ±0.0254 mm) or as large as several inches, using suitably selected lvdt elements. The range of the ZERO control can also be increased through the use of an internal switch. Increased ZERO control is desirable when a transducer with a l-inch stroke or longer is used.

When the instrument is to be used over the full range of the transducer, internal linearization controls can be activated (through an internal switch) to compensate for lvdt's whose output tend to flatten near full-scale displacement.

The 3130 also contains a unique phase control circuit that provides for automatic synchronous demodulation of the transducer output. No internal phase selection is generally required.

Active low-pass filtering after carrier demodulation allows the averaging or smoothing of signals containing noise or other unwanted characteristics that are periodic in nature. Filtering removes these dynamic components so that stable digital indication and precise jitter-free control action can be obtained. Two analog outputs are provided, with one having a bandpass from dc to 2 Hz and the other a bandpass from dc to 400 Hz. The full-scale output is the standard Five-Volt Data Signal Level of the 3000 Instruments.

The 3130 LVDT Conditioner is also available in two additional forms. The Model 3230 includes the addition of a Digital Indicator to view the analog output of the conditioner. The Model 3330 includes a Limit section (in addition to a Digital Indicator) which provides HI/LO/OK indications and outputs. The Digital Indicator and Limit options are standard to all 3000 Instruments and are covered in separate instruction manuals.

2. INSTALLATION AND CABLING

The following paragraphs provide the instructions for module installation and cabling.

Model 3130

MOUNTING. The 3000 Series instruments can be operated as bench-top instruments or they can be rack- or panel-mounted. Clearance dimensions for a bench-mounted instrument are given in Figure 2. Panel cut-out dimensions for panel mounting are also shown in Figure 2. Up to four 3000 Series Instruments can be mounted in a 19-inch rack using the 1-3/4 inch high Model 3004 Rack Adaptor. Rack-mounting dimensions are also given in Figure 2. To panel mount an instrument, proceed as follows. Refer to Figure 3.

IMPORTANT: The unit is shipped with two spacer washers on the securing screws of the rear-panel I/O Connector. When panel-mounting the unit, you MUST REMOVE THESE WASHERS, so that the printed-circuit board may move forward about 1/8" during Step (f).

(a) Remove the front panel by removing the two 2-56 x 3/8 flat-head screws.
(b) Remove the front bezel by removing the four 6-32 x 5/8 fillister-head screws.
(c) Make the panel cutout and drill the screw clearance holes indicated in Figure 2. The front bezel can be used as a template to define the rectangular cutout and locate the clearance holes.
(d) Hold the instrument enclosure behind the panel and reattach the front bezel to the enclosure from the front of the panel with the four remaining screws.
(e) Reinstall the front panel.
(f) Tighten the two securing screws of the rear-panel I/O connector to ensure that the connector is seated and that the conditioner printed-circuit board is pushed fully forward so that the front-panel screwdriver adjustments and buttons are accessible. These screws give approximately 1/8-inch of adjustment; consequently, this is the maximum panel thickness which should be used.

CAUTION

Do not overtighten the connector securing screws or resultant damage may occur to the printed-circuit board.

AC POWER CONNECTION. To protect operating personnel, the 3000 Series Instruments are equipped with a three-conductor power cord. When the cord is plugged into the appropriate receptacle, the instrument is grounded. The offset pin on the power cord is ground. To maintain the safety ground when operating the unit from a two-contact outlet, use a three-prong to two-prong adaptor and connect the green pigtail on the adaptor to ground.

To prepare the instrument for operation, connect the power cable to a 105-135 volt ac, 50-400 Hz power source. The instrument can use up to 5 watts of power.

TRANSDUCER CABLING. Cabling to the transducer is accomplished via the supplied instrument I/O connector. The I/O connector pin numbers and functions are given in Figure 4. When Daytronic transducers are used, factory wired cables are available as shown in Figure 4. The Daytronic 83S Cable is for use with DS100A, DS200A, DS80, DS190, and DS400 The 84S Cable is for use with DS500 and DS2000 transducers.

When user-fabricated transducer cabling is used, it should take the form of either the 5- or 7- wire configurations shown in Figure 4. The 5-wire configuration can be used when the cable length is to be less than 100 feet. The 7-wire configuration should be used with cable lengths 100 feet or longer. A generalized 7-wire cable drawing is provided in Figure 4 for use when Daytronic transducers are not supplied.

The 3130 can also be used with 3-wire variable reluctance transducers. A generalized cabling diagram for connection to this type of transducer is also given in Figure 4.

It is also possible, when a Daytronic transducer is not used, that the selected transducer is not provided with a center tap between the two series-opposed secondary windings. In this case, pins 4 and 5 of the I/O connector must be tied (see Fig. 4), 4-or 6-wire cables must be fabricated, and the automatic phase control feature of the 3130 cannot be used. Refer to the following paragraph entitled Phase Control.

PHASE CONTROL. When a center-tap lead is provided on the selected transducer and the transducer is properly cabled to the 3130 via a 5- or 7-wire cable, the instrument has an automatic phase-lock feature for synchronous demodulation. Other than cabling the transducer to the instrument, no other operator action is required. If, however, a secondary center-tap lead is not provided with the transducer, the automatic phase-lock feature cannot be used and an internal wiring change must be made.

Figure 2. Instrument Mounting Dimensions

3000 SERIES MODULE PANEL WITH CUT OUT AND MOUNTING HOLES 6-32 x 5/8 FILLISTER- HEAD SCREW FRONT BEZEL 2-56 x 3/8 FLAT- HEAD SCREW FRONT PANEL

Figure 3. Instrument Panel Mounting

Model 3130

In the event the center-tap lead is not provided, remove the main circuit board from the instrument housing and locate the solder-drop terminals indicated in Figure 5. Remove the solder-drop connection between the center pad and the pad marked A. Make a new connection between the center pad and the pad marked B. The instrument demodulation circuit will now be synchronized with the primary excitation signal which does not include the primary-to-secondary phase shift. Reinstall the main circuit board.

INTERNAL CONTROLS. A bank of ten miniature switches and two Linearizing adjustments are located at the front of the main circuit board, immediately behind the front panel (see Figure 6). The switches can be set at this time (prior to calibration). The two adjustments are used when the Linearizing function (described in a following paragraph) is to be used in calibration. The following paragraphs describe the switch functions so that the user can now determine which functions to activate or select. For access to the switches and controls, remove the front panel by removing the two #2-56 flat-head screws.

Range Selection. Five Range switches, designated .3, 1, 3, 10, and 30, are provided for selecting the proper amplifier sensitivity. The x.3 range is the least sensitive range, and the x30 range is the most sensitive. Only one of the five switches should be turned ON. Table 2 gives the nominal range selections which should be made for Daytronic transducers. If more sensitive scaling of the transducer is desired, a larger Range term can be selected. For example, a DS200A transducer can be spanned to give a ±5 volt output for ±0.100 inch of displacement on the x1 Range. If 0.010 inch is the desired full-scale displacement, choose the x10 Range and adjust the SPAN controls accordingly for the ±5 volt analog output. Range selection for transducers other than those supplied by Daytronic can be determined by trial and error when calibrating the instrument.

Cal Level Selection. An internal reference signal is applied to the Signal Conditioner when the front-panel CAL button is pressed. After initial calibration by transducer displacement, the number displayed when the CAL button is pressed can be recorded for use in future calibrations or for calibration verification. However, this internal reference must have a value less than the full-scale calibration value. Three Cal Level switches (A, B, and C) are provided so that the proper calibration signal level can be selected. Except for the DS80, all Daytronic transducers use Cal Level B for the range selections given in Table 2. When other Ranges or transducers are used, Cal Level selection can be determined by trial and error when calibrating the instrument.

DAYTRONIC 3X30 INSTRUMENT I/O CONNECTOR W/PIN DESIGNATIONS

(X=1,2,or 3, e.g. 3130, 3230,3330)
AMPHENOL 225-21021-103 REARVIEW

A

PIN PIN

I +EXCITATION A +SENSE
2 -EXCITATION B -SENSE
3 SECONDARY I C NC
4 SECONDARY 2 D OSC. DISABLE
5 SIGNAL COMMON E AUXILIARY SIGNAL COMMON
6 OSC. INPUT F OSC. OUTPUT
7 NC H ANALOG OUTPUT, ±5V-DC TO 2HZ
8 REMOTE CAL. J ANALOG OUTPUT, ±5V-DC TO 400HZ
9 SHIELD K BRIDGE COMPLETION RESISTOR
IO OUTPUT L BRIDGE COMPLETION RESISTOR

Fig. 4 I/O Wiring Data

AMPHENOL 57-60140 REARVIEW

B

PIN PIN

1 +EXCITATION 8 +SENSE
2 NC 9 NC
3 -EXCITATION 10 -SENSE
4 NC II NC
5 SECONDARY 2 12 SIGNAL COMMON
6 NC 13 NC
7 SECONDARY 1 14 SIGNAL COMMON

ALL CONFIGURATIONS: SHIELD SIGNAL WIRES FROM PINS 3,4, AND 5 OF "A" SEPARATELY FROM EXCITATION AND SENSE WIRES. ATTACH SHIELDS TO PIN 9 OF "A" AND AT NO OTHER POINT.

5 WIRE CONFIGURATION FOR CABLES SHORTER THAN 100 FEET

A 1 +EXC, +SENSE 1 A - EXC, -SENSE 2 3 B SEC 1 7 4 SEC 2 5 E,5 SIG COM 12 9 ----SHIELD 14 H ±5V-DC TO 2HZ J ±5V-DC TO 400HZ 10 COMMON

B

graph TD
    A["1"] -->|+EXC, +SENSE| B["E"]
    C["A"] --> D["-EXC, -SENSE"]
    E["2"] --> F["F"]
    G["B"] --> H["SEC 1"]
    I["3"] --> J["B"]
    K["4"] --> L["D"]
    M["E,5"] --> N["SIG COM"]
    O["9"] --> P["A"]
    Q["H"] --> R["±5V-DC TO 2HZ"]
    S["J"] --> T["±5V-DC TO 400HZ"]
    U["10"] --> V["COMMON"]

83S
DAYTRONIC FACTORY WIRED CABLE 7 WIRE CONFIGURATION FOR CABLES LONGER THAN 100 FEET
84S

A +EXC 1 +SENSE 8 - EXC 3 B -SENSE 10 SEC 1 7 SEC 2 5 E,5 SIG COM 12 9 H> ±5V-DC TO 2HZ J> ±5V-DC TO 400HZ 10> COMMON

B

A

1 +EXC A +SENSE 2 -EXC B -SENSE 3 SEC 1 4 SEC 2 E,5 SIG COM 9 H> ±5V-DC TO 2HZ J> ±5V-DC TO 400HZ IO> COMMON C

DAYTRONIC 3X30 INSTRUMENT TO GENERALIZED TRANSDUCER
A

+EXC +SENSE -EXC -SENSE SEC 1 SEC 2 SIG COM SEC 1 SEC 2 H ±5V-DC TO 2HZ J ±5V-DC TO 400HZ 10 COMMON

NOTE: FOR TRANSDUCERS WITHOUT CENTER TAP CONNECT PINS 4 AND 5 TOGETHER. ALSO USE PHASE CONTROL CONNECTION B.

A
UCTANCE TRANSDUCER CONNECTION

1 A 2 B K L 3 9 SHIELD H ±5V-DC TO 2HZ J ±5V-DC TO 400HZ 10 COMMON

REMOTE CALIBRATION CONNECTIONS

A 8 10 A 8 10 A 8 10 TTL COM

Fig. 4 (cont'd)

MASTER/SLAVE CONNECTION FOR 3X30 INSTRUMENTS MASTER 3X30 SLAVE 3X30 Signal Common TO OTHER SLAVES

Fig. 4 (cont'd)

Daytronic Corporation

Connection for Auto Phase Lock Phase A B R62 R61 R60 Connect Center Pad to "B" when transducer common line not supplied

Figure 5. Phase Control Select Terminals

OFF ON LI Z A B C .3 1 3 10 30 TR E CAL LEVEL RANGE x LINEARIZE

Figure 6. Internal Operating Controls

Table 2. Operational Settings For Daytronic Transducers

Zero Expansion. The Zero Expansion switch (marked ZE) expands the authority of the front-panel ZERO control when ON. In general, the Zero Expansion switch should be turned ON when the transducer has a stroke greater than one inch. For transducers with a stroke less than one inch, the switch should be OFF.

Linearization Selection. The 3130 contains Linearization circuits which provide for electronically linearizing lvdt transducers since these types of transducers are generally nonlinear in the 50 to 100 percent displacement range. Both + and - Linearization adjustments are provided since lvdt's also exhibit unsymmetrical characteristics. If the selected transducer can be calibrated at full displacement so that the full analog output of the 3130 is obtained ( ±5 volts output is provided at the full displacement of the transducer), the Linearization Trim switch (marked LI TR should be turned ON. Table 3 is a listing of the Daytronic transducers which can be calibrated using the Linearization circuits. Table 3 also gives the Digital indicator scaling which must be selected when calibration is accomplished using a 3230 or 3330 instrument. The procedures for calibration using the Linearization circuits are given in Section 3. Refer to the Digital Indicator Instruction Manual for the procedures for selecting the scaling given in Table 3.

REMOTE CALIBRATION CHECK. The instrument can be placed in the calibration mode by shorting pins 5 (Signal Common) and 8 (Remote Cal) of the rear-panel I/O connector. Figure 4 indicates three methods of remotely entering the calibration mode (external switch, transistor, or TTL source). The Remote Cal function provides a convenient method of periodically monitoring calibration of the instrument.

Table 3. Linearization Scaling For Daytronic Transducers

Transducer	Full-Scale Displacement (inches)	Digital Indicator Scaling	3130 Full-Scale Output	Units
DS100A	±0.050	50.00	±5 volts	milliinches
DS200A	±0.100	100.00	±5 volts	milliinches
DS2000	±1.000	1.0000	±5 volts	inches
DS80	±0.04 (1mm)	50.00	±5 volts	milliinches
DS190	±0.10 (2.5mm)	100.00	±5 volts	milliinches
DS400	±0.20 (5mm)	200.00	±5 volts	milliinches

MASTER/SLAVE CONNECTIONS. When more than one 3130 (or a combination of 3130 or 3178 Strain Gage Conditioners) is being used in a measurement setup (instruments are contiguously mounted or the transducer cabling is in a common conduit or raceway), beat frequencies may be produced from the 3-kHz oscillators used in the instruments to develop the excitation. To prevent beat frequencies from occurring, one unit can be designated the master, and the remaining units can be driven from the oscillator contained in the master unit. The remaining units are designated as slave instruments. To perform master/slave wiring, refer to Figure 4.

ANALOG OUTPUTS. Two analog outputs are available at the instrument I/O connector, with each output having a different passband: dc to 2 Hz and dc to 400 Hz. The cutoff frequencies are achieved with active low-pass filters. When the dc-to-2 Hz output is used, a trade off is made between noise elimination and increased time-to-answer or slew time. Each output has a 60-dB rolloff a decade from the cutoff frequency. The filter characteristics are given by the following equations:

$$ \begin{array}{l} \mathrm{A} _ {\text { out }} @ \mathrm{f} _ {0} = 0. 7 \mathrm{A} _ {\text { in }} \ \mathrm{A} _ {\text {out}} @ 1 0 \mathrm{f} _ {0} = 0. 0 0 1 \mathrm{A} _ {\text {in}} \ \mathrm{T} = 1. 4 / \mathrm{f} _ {0} \ \mathrm{A} _ {\text { i n }} = \text { i n p u t } \quad \text { a m p l i t u d e } \ \mathrm{f} _ {0} = \text { selected cutoff frequency } \ \end{array} $$

where A_out = output amplitude

T = time-to-answer in seconds (output of filter within 0.1% of final value after step function is applied).

3. CALIBRATION

This section contains the instructions for calibrating the 3130. Included is a functional description of the instrument panel (see Figure 7). To perform calibration proceed as follows.

(a) Turn power ON by placing the rear-panel slide switch in the ON position. The front-panel indicator should light to indicate the application of ac power. Allow 5 minutes of warmup for stabilization of transducer characteristics.
(b) Set the ZERO and Coarse SPAN controls to mid-position. These are twelve-turn controls and should be set six turns from either end.
(c) Position the transducer stem for an output reading as near 0.000 volts dc as possible. If the unit is supplied with the optional Digital Indicator (3230/3330), position the stem for a front-panel indication of all zeroes.
(d) Using the front-panel ZERO control, set the output to 0.000 volts dc or a front-panel indication of all zeroes (3230/3330).
(e) Determine whether the Linearizing function is to be used. If the full ±5 volt analog output (full-scale indication on 3230/3330) is to be produced for the full-rated displacement of the transducer, the Linearizing Trim switch (located behind the front panel) should be ON. When only a portion of the rated displacement of the transducer is to produce a ±5 volt analog output, or an output other than ±5 volts is to be produced for the full-rated displacement of the transducer, the switch should be OFF. Refer to Table 3 for a listing of Daytronic transducers which can be used with the Linearizing function and the corresponding digital scaling used when a 3230/3330 instrument is supplied.
(f) Proceed to step (j) if the Linearizing function is to be used. If this function is not to be used, proceed to step (g).
(g) Using a gage block or other convenient standard, displace the transducer stem to the desired full-scale value.

Daytronic Corporation

(h) Adjust the Fine and Coarse SPAN controls for the desired output reading. If the desired output reading cannot be reached, it may be necessary to select another internal Range switch. Refer to section 2, Installation.
(i) Proceed to step (p).
(j) Steps (j) thru (o) are to be performed only when the Linearizing function is used. Using a gage block or other convenient standard, displace the transducer stem to 50 percent of its positive full-scale value.
(k) Adjust the Coarse and Fine SPAN controls for an analog output reading

DAYTRONIC ZERO CAL SPAN- LVDT CONDITIONER Model 3130

ZERO Control: The ZERO control sets the output to zero with zero transducer displacement.

SPAN Controls: The Coarse (c) and Fine (f) SPAN controls are used to adjust the analog output voltage to a value precisely proportional to the displacement of the transducer stem.

CAL Pushbutton: When pressed, the CAL pushbutton causes the internal Excitation sensing lines to be substituted for the signal input from the transducer, supplying an Equivalent Displacement value for the adjustment of the SPAN controls.

Figure 7. Front-Panel Description

Model 3130

of +2.5 volts (half-scale indication on the 3230/3330). If this indication cannot be reached, it may be necessary to select another internal Range switch. Refer to Section 2, Installation.

(I) Displace the transducer to 100 percent of its positive full-scale range.
(m) Adjust the + Linearize adjustment (see Figure 6) for an analog output of +5.000 volts dc or a full-scale indication if the 3230 or 3330 is supplied.
(n) Displace the transducer to its negative full-scale value.
(o) Adjust the - Linearize control for an analog output of -5.000 volts dc or a minus full-scale indication if the 3230/3330 is supplied.
(p) Steps (p) thru (r) describe the procedure to determine a calibration number for a given transducer. Press the CAL button.
(q) Observe the analog output voltage produced when the CAL button is pressed (or the 3230/3330 indication). The resulting number is the calibration number. It should be recorded and used for subsequent calibration checks or for instrument recalibration without using a gage block or other calibration standard when setting the SPAN controls.
(r) The internal Cal Level switches described in Section 2, Installation. are used to select the proper signal level for the internal calibration reference. If the calibration number is an off-scale value, or is a number less than half of the instrument full-scale output, another Cal Level switch may have to be selected. When the proper Cal Level switch is selected, the calibration number will be the greatest output value that can be obtained that is less than the full-scale output of the instrument.

4. BLOCK DIAGRAM DESCRIPTION

The purpose of this section is to explain how the Model 3130 works by using a simplified block diagram. This section is not intended to provide a detailed explanation of electronic circuits for personnel untrained in electronic technology. However, it provides an adequate overview of operation for those familiar with basic electronic circuit operation. Throughout the following, refer to Figure 8.

POWER SUPPLIES. Primary power (115 volts ac, 50-400 Hz) is applied to the instrument by means of a rear-panel ac connection point and the supplied 3-conductor power cord. A rear-panel slide switch is used to turn ON primary power. Overload protection is provided by a 0.50 ampere fuse mounted near the ac connection point. When the slide switch in ON, primary power is applied to the transformer which provides the necessary power-line isolation and the low ac voltages required to develop the regulated dc voltages used in the 3130. The secondary of the power transformer has a grounded center tap, and a diode bridge functions as two full-wave rectifiers to produce ±9 volts regulated dc. Two three-terminal integrated-circuit Regulators are used to develop these regulated voltages. The reference terminal of each Regulator is biased with one or two diodes to make certain that a minimum regulated voltage of 9 volts is achieved. The proper diode biasing is accomplished at factory check out.

A dc reference voltage of +2.5 volts dc is further developed from regulated +9 volts by use of a third three-terminal Regulator. This precision dc reference is used to control the amplitude of the ac excitation and is further discussed in a following paragraph.

The -9 volts regulated is used to light the front-panel indicator (LED) which indicates the application of ac power to the instrument.

The + unregulated voltage from the diode bridge is routed to the Digital Indicator and HI/LO Limits circuit boards when these items are supplied (Models 3230 and 3330). It is used to develop + 5 volts regulated for the TTL logic employed in these circuits. Refer to the Digital Indicator and HI/LO Limits Instruction Manuals.

The secondary of the power transformer also supplies 5 volts ac to the Digital Indicator circuit board when the Model 3230/3330 is supplied. This ac voltage is used to develop unregulated +6 volts. Refer to the Digital Indicator Instruction Manual.

AC EXCITATION. The 3-kHz ac excitation is produced with a Wein Bridge Oscillator. The oscillator output is applied to a full-wave rectifier to obtain a dc voltage proportional to the ac amplitude of the oscillator output. The rectifier output is applied to the inverting input of an Integrating Amplifier. The noninverting input of the amplifier is connected to the precision Reference voltage (+2.5 volts dc). If the amplitude of the oscillator varies, the output of the Integrating Amplifier

Model 3130

changes the resistance of an Automatic Gain Control element (FET) to return the oscillator amplitude to its nominal value of 2 volts ac. The Integrating Amplifier thus serves as an error amplifier, and the integrating element (capacitor) deletes 6-kHz ripple from the rectified oscillator output.

The 3-kHz oscillator output is applied to an excitation buffer amplifier. Both plus and minus Sense lines are returned to the excitation buffer to sense and regulate the excitation voltage at the transducer (Figure 8 shows the 3130 connected to the transducer via a 7-wire cable. Refer to Figure 4). A Power Driver circuit is used to provide the drive current required by the transducer.

When more than one 3130 (or a combination of 3130 or 3178 Strain Gage Conditioners) is being used in a measurement setup, beat frequencies may be produced from the 3-kHz oscillators contained in each instrument. To prevent beat frequencies from occurring, one unit can be designated the master, and the remaining units can be driven from the oscillator contained in the master unit. The remaining units are designated as slave instruments. The Oscillator In terminal of each slave unit (at the instrument I/O connector) provides a connection point to the Oscillator Out terminal of the master unit. The Oscillator Out and Oscillator Disable terminals of the slave units are jumpered to disable the oscillator internal to these units.

CALIBRATION CIRCUIT. The Calibration circuit provides a means of inserting an internal reference in place of the transducer output signal, yielding an arbitrary output value that allows the amplifier gain to be checked or adjusted without repeating the initial transducer setup (calibration through transducer stem displacement). When the CAL button is pressed, the plus and minus Sense lines are substituted for the plus and minus Signal lines as the input to the Signal Conditioner circuits. This action occurs when the negative input of a Comparator is grounded through the CAL switch. The output of the Comparator actuates an analog switch (DPDT) that selects the input source of the Signal Conditioner.

The Cal Level switches (three switches termed A, B, and C) are provided as a means of scaling the calibration signal to a level that is less than the full-scale output of the instrument. When the CAL button is pressed, the Comparator output actuates a second analog switch (SPDT) that selects the appropriate calibration level.

Daytronic Corporation

Zero offset voltages that are introduced by the Zero Amplifier circuit are eliminated when the CAL button is pressed. The +2.5 volt Reference is removed from the ZERO control by means of an FET switch controlled by the output of the Comparator.

Calibration can also be remotely checked. When the Remote Cal input at the 3130 I/O connector is brought to a zero-volt (ground) level through the action of an external switch, transistor driver, etc. the same action occurs as when the CAL button is pressed.

SIGNAL CONDITIONER. The + Signal and - Signal inputs from the transducer are applied to a Differential Amplifier with excellent common-mode rejection. The output of the Differential Amplifier is applied across a divider network with five tap offs that are terminated at corresponding Range switches. These switches provide coarse scaling of the amplifier output.

The Synchronous Demodulator receives the scaled output of the Differential Amplifier and a Phase Control signal and provides a dc output that is proportional to the magnitude of the transducer core displacement and of the proper polarity. The Phase Control signal normally is developed by a divider network (two equal resistors) across + Signal and - Signal inputs. This constant amplitude signal, which includes the phase shift between the primary and secondary windings of the transducer, is applied to an Amplifier and Squarer, then to the demodulator. It guarantees automatic phase lock for synchronous demodulation.

A solder-drop matrix, comprised of three solder pads, is provided for use when the above described Phase Control signal cannot be used. The center pad is the input line to the Amplifier/Squarer circuit. The pad labeled A is connected to the previously described divider junction. A solder-drop connection is made between the center pad and the pad marked A when the selected transducer is supplied with a lead from the common connection point of the secondary windings. The pad labeled B is connected to the + Excitation. A solder-drop connection is made between the center pad and the pad marked B when the selected transducer is supplied without the aforementioned center-tap lead. All Daytronic transducers are supplied with the center-tap lead: thus, all 3130 instruments are shipped with the solder-drop connection made between the center pad and pad A.

The Zero circuit provides a means of introducing a dc offset on the output of the Synchronous Demodulator for electronically zeroing the instrument when the transducer stem is near its zero position. The +2.5 volt Reference is applied across

Model 3130

the ZERO control. The wiper of the control is connected to the input of an Amplifier/Buffer circuit. The authority of the ZERO control is determined by the Zero Expansion switch. In general, the Zero Expansion switch should be OFF (open) for transducers with a stroke less than one inch. The switch should be ON (closed) for transducers with a stroke greater than one inch.

The dc output of the Synchronous Demodulator is buffered by an output amplifier circuit. The Coarse and Fine SPAN controls are contained in the circuit, and provide a gain adjustment for instrument calibration.

The amplified analog signal is applied to two active low-pass filters, each of which provide an output at the instrument I/O connector. The filters are in series and provide passband outputs of dc-to-2 Hz and dc-to-400 Hz. Output selection is a tradeoff between eliminating unwanted signals caused by vibration, etc, or increasing the time-to-answer (slew rate) of the conditioner. The rolloff of each output is 60 dB within a decade of the cutoff frequency.

A Linearizing circuit is provided to improve the output characteristics of lvdt transducers since these types of transducers are generally nonlinear in the 50 to 100 percent displacement range. Both + and - Linearization adjustments are provided since lvdt's also exhibit unsymmetrical characteristics. The Linearizing circuit can be disconnected from operation by means of the Linearizing Trim switch. If the selected transducer can be calibrated at the full analog output of the 3130 and the transducer is to be used at 100 percent displacement, the Linearization circuits should be used to calibrate the instrument. If the preceding does not hold true, the switch should be turned OFF and the instrument should be calibrated using only the SPAN controls.

5. VERIFICATION OF NORMAL OPERATION

It is the purpose of this section to aid the user in determining, in the event of a malfunction to which the Model 3130 is suspected of contributing, whether the instrument is functioning normally or whether it is the source of the observed trouble. In the event the module requires repair, a complete parts list, schematic diagram, and component location drawing are included in this manual. The user may also contact the factory Service Department or the local Daytronic Representative for assistance.

graph TD
    A["Oscillator Enable"] --> B["Power Transfer Former"]
    C["Oscillator Cut"] --> B
    D["Oscillator N+"] --> B
    B --> E["DC-TO-40Hz Analog Output"]
    E --> F["Active Low-Pass Filter"]
    F --> G["DC-TO-4 Hz Analog Output"]
    G --> H["Active Low-Pass Filter"]
    H --> I["AC-TO-4 Hz Analog Output"]
    I --> J["DC-TO-4 Hz Analog Output"]
    J --> K["AC-TO-4 Hz Analog Output"]
    K --> L["AC-TO-4 Hz Analog Output"]
    L --> M["AC-TO-4 Hz Analog Output"]
    M --> N["AC-TO-4 Hz Analog Output"]
    N --> O["AC-TO-4 Hz Analog Output"]
    O --> P["AC-TO-4 Hz Analog Output"]
    P --> Q["AC-TO-4 Hz Analog Output"]
    Q --> R["AC-TO-4 Hz Analog Output"]
    R --> S["AC-TO-4 Hz Analog Output"]
    S --> T["AC-TO-4 Hz Analog Output"]
    T --> U["AC-TO-4 Hz Analog Output"]
    U --> V["AC-TO-4 Hz Analog Output"]
    V --> W["AC-TO-4 Hz Analog Output"]
    W --> X["AC-TO-4 Hz Analog Output"]
    X --> Y["AC-TO-4 Hz Analog Output"]
    Y --> Z["AC-TO-4 Hz Analog Output"]
    Z --> AA["AC-TO-4 Hz Analog Output"]
    AA --> AB["AC-TO-4 Hz Analog Output"]
    AB --> AC["AC-TO-4 Hz Analog Output"]
    AC --> AD["AC-TO-4 Hz Analog Output"]
    AD --> AE["AC-TO-4 Hz Analog Output"]
    AE --> AF["AC-TO-4 Hz Analog Output"]
    AF --> AG["AC-TO-4 Hz Analog Output"]
    AG --> AH["AC-TO-4 Hz Analog Output"]
    AH --> AI["AC-TO-4 Hz Analog Output"]
    AI --> AJ["AC-TO-4 Hz Analog Output"]
    AJ --> AK["AC-TO-4 Hz Analog Output"]
    AK --> AL["AC-TO-4 Hz Analog Output"]
    AL --> AM["AC-TO-4 Hz Analog Output"]
    AM --> AN["AC-TO-4 Hz Analog Output"]
    AN --> AO["AC-TO-4 Hz Analog Output"]
    AO --> AP["AC-TO-4 Hz Analog Output"]
    AP --> AQ["AC-TO-4 Hz Analog Output"]
    AQ --> AR["AC-TO-4 Hz Analog Output"]
    AR --> AS["AC-TO-4 Hz Analog Output"]
    AS --> AT["AC-TO-4 Hz Analog Output"]
    AT --> AU["AC-TO-4 Hz Analog Output"]
    AU --> AV["AC-TO-4 Hz Analog Output"]
    AV --> AW["AC-TO-4 Hz Analog Output"]
    AW --> AX["AC-TO-4 Hz Analog Output"]
    AX --> AY["AC-TO-4 Hz Analog Output"]
    AY --> AZ["AC-TO-4 Hz Analog Output"]
    AZ --> BA["AC-TO-4 Hz Analog Output"]
    BA --> BB["AC-TO-4 Hz Analog Output"]
    BB --> BC["AC-TO-4 Hz Analog Output"]
    BC --> BD["AC-TO-4 Hz Analog Output"]
    BD --> BE["AC-TO-4 Hz Analog Output"]
    BE --> BF["AC-TO-4 Hz Analog Output"]
    BF --> BG["AC-TO-4 Hz Analog Output"]
    BG --> BH["AC-TO-4 Hz Analog Output"]
    BH --> BI["AC-TO-4 Hz Analog Output"]
    BI --> BJ["AC-TO-4 Hz Analog Output"]
    BJ --> BK["AC-TO-4 Hz Analog Output"]
    BK --> BL["AC-TO-4 Hz Analog Output"]
    BL --> BM["AC-TO-4 Hz Analog Output"]
    BM --> BN["AC-TO-4 Hz Analog Output"]
    BN --> BO["AC-TO-4 Hz Analog Output"]
    BO --> BP["AC-TO-4 Hz Analog Output"]
    BP --> BQ["AC-TO-4 Hz Analog Output"]
    BQ --> BR["AC-TO-4 Hz Analog Output"]
    BR --> BS["AC-TO-4 Hz Analog Output"]
    BS --> BT["AC-TO-4 Hz Analog Output"]
    BT --> BU["AC-TO-4 Hz Analog Output"]
    BU --> BV["AC-TO-4 Hz Analog Output"]
    BV --> BW["AC-TO-4 Hz Analog Output"]
    BW --> BX["AC-TO-4 Hz Analog Output"]
    BX --> BY["AC-TO-4 Hz Analog Output"]
    BY --> BZ["AC-TO-4 Hz Analog Output"]

Figure 8. Block Diagram

If the instrument is suspected of faulty operation, observe the following steps.

(a) If the instrument is totally inoperational (front-panel power indicator does not light), check the primary power fuse (F1). If the fuse is blown, replace it with a 0.50 ampere fuse (see Table 4 for part number). Before reapplying power, visually inspect the power cord and the input power connections for any discrepancy which could have caused the overload.
(b) Depress the CAL pushbutton and determine whether the instrument output is stable, free of noise, and responsive to adjustment of the Coarse SPAN control. If the output complies with these criteria, but had previously been unstable, noisy, offscale, or unresponsive to the SPAN control, it can be assumed that the difficulty lies in the transducer and/or cable configuration due to the fact that, when the CAL pushbutton is depressed, the transducer and cable are disconnected and replaced by an internal reference signal.
(c) The inability to achieve a proper zero indication, where the instrument output reads totally off scale and the ZERO control has no authority, can very likely be the result of a damaged or defective transducer or cable. This possibility can be confirmed (or eliminated) by substituting a transducer and cable known to be in good condition or by disconnecting the transducer and cable and installing jumper wires as follows at the instrument I/O connector.

Tie pin 1 (+ Excitation) to pin A (+ Sense)

Tie pin 2 (− Excitation) to Pin B (− Sense)

Tie pin 3 (+ Signal Input) to pin 4 (− Signal Input) and pin 5 (Signal Common)

If the proper zero indication can now be achieved, the problem most likely lies in the transducer and/or cable configuration. If, however, the unit still will not zero properly, the problem lies within the instrument.

3000 SERIES

"C" Option

4-20 mA CURRENT OUTPUT

INSTRUCTION MANUAL

1. General Description

Operating in this mode, any 3000 Series instrument can transmit high-accuracy measurement data as process signals for supervisory monitoring and control. ^1 Each “C” unit produces two kinds of analog output simultaneously: (1) its normal voltage output and (2) a current output continuously proportional to the voltage signal to within ±0.05% .

As normally shipped, this option generates a current output within the ISA standard signal range of 4 to 20 mA, corresponding to a range of 0 to +5 V. Bipolar ranges of ±16 mA and 4 to 12 to 20 mA are also available, each corresponding to -5 to +5 V. Voltage compliance is +5 V relative to Signal Common.

Pinout for I/O Connectors (REAR VIEW)

Fig. 1 Rear-Panel Location of 3000C Current Output Board

3000 "C Option" Board I/O Connector (20-pin)² Pin 1 Pin 10 Pin A Pin L Conditioner Board I/O Connector (20-pin)

2. Connections / Output Mode Selection

Pin assignments for the 3000C board's 20-pin I/O connector (shown in Fig. 1) are given in the following table. ^3

Pin Number Function

8 CURRENT OUTPUT SIGNAL

Range will be standard unipolar 4-20 mA if Pins 9 and 10 are both unconnected; the output is single-ended, and should be returned to Pin J (COMMON)

9 ±16 mA MODE

Connecting Pin 9 to Pin K will set the current output range to bipolar ±16 mA

10 4-12-20 mA MODE

Connecting Pin 10 to Pin L will set the current output range to bipolar 4-12-20 mA (with 12 mA as effective "zero")

J COMMON

K, L for OUTPUT MODE SELECTION

1 NOTE: The "C" Option may NOT be used in combination with the "P," "G," "R," or "S" Option.
2 In Form 3 ("33XX") instruments with the "C" Option, current-output circuitry is integrated with the 3300 HI-LO Limits Board.
3 For all other (limit-related) I/O connections for Form 3 ("33XX") instruments with the "C" Option, see the Model 3300 HI-LO Limits Instruction Manual.

R6 10K R19 15K R24 12 MA R20 12.4 K R25 1K 4MA R21 9040K +9 +9V +9V U3 4052 I3 I4 X1 X2 X3 X4 A -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9V +9V -9N 15X2 11X3 11X4 11X5 11X6 11X7 11X8 11X9 11X10 11X11 11X12 11X13 11X14 11X15 11X16 11X17 11X18 11X19 11X20 11X21 11X22 11X23 11X24 11X25 11X26 11X27 11X28 11X29 11X30 11X31 11X32 11X33 11X34 11X35 11X36 11X37 11X38 11X39 11X40 11X41 11X42 11X43 11X44 11X45 11X46 11X47 11X48 11X49 11X50 11X51 11X52 11X53 11X54 11X55 11X56 11X57 11X58 11X59 11X60 11X61 11X62 11X63 11X64 11X65 11X66 11X67 11X68 11X69 11X70 L308 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 0 P3-S B P3-ID P3-L D LOAD + OUTPUT PIN B COMMON PIN J + CURRENT MODES NO STAP 4 TO 20 MA MODE 9 TO K ± 16 MA MODE 4-Ⅱ-20 MODE I2 MA ZERO A B C D E F H U K L A4 T73687 POWER PIN CHART DEVICE PIN TO PIN TO PIN TO UI LM3CE 4 -9V 7 +9V U2 TLO62 4 -9V B PCOM 8 +9V I6 +9V 7 -9V U5 4052 B

CSP	C	7-1-96	WAS VERSION 003	50
TT	B	2-7-96	REV. 884 NO 81	MAY
	A	G-24-96	DATE: 10/07/2010	M
ZONE	REV	DATED	DESCRIPTION	APR	CONTROL
CHL DCT	CSP		DAYTRONIC CORPORATION MIANSBURG, OHIO
CLM DTT	DFT
DATE	7-12-93		REV. 7-1-96	REV. LEVEL	C
4 TO 20 MA CURRENT OUTPUT CARD				s3000C NUMBER

3000 SERIES

"G" Option

DUAL GALVANIC ISOLATED OUTPUT

INSTRUCTION MANUAL

1. General Description

With this optional circuit board, a Form 1 (“31XX”) or Form 2 (“32XX”) instrument can furnish two independent galvanic outputs, fully isolated not only from each other but also from the 3000 instrument’s “common.” Each output is normally set at the factory for a full-scale range of 0-10 V-DC (±0.2%) when the data signal from the 3000 unit’s conditioner card is at its standard 5-V level. Though normally preset at “2.00,” each input’s gain can be adjusted within ±5%, if desired, by means of potentiometer controls on the G-option card.

The use of galvanically isolated outputs prevents ground-loop effects in interconnections with remote data-acquisition systems or controllers. The presence of two independent outputs lets you send collected data to two different systems or devices, each with its own ground.

Load limit for each output exceeds 10 kilohms. Output bandwidth is normally 40 Hz; the "G" option can be easily modified, however, for other bandwidths up to 500 Hz (contact the factory for details).

NOTE: The only other options that may be combined with the "G" option are the "B" (battery-powered) and "F" (230 V-AC-powered) options.

2. Additional 3000(G) Specifications

Output Range: ±10 V-DC full scale (2 mA max), normal; internal controls give approximately ±5% of adjustment authority on both SPAN and ZERO

Common-Mode Range: ±500 V, max

Common-Mode Rejection Ratio: DC: -120 dB; at 60 Hz: -60 dB

Linearity: ±0.1% of full scale

Maximum Zero Drift, After Warmup of One-Half Hour: ±0.2% of full scale*

Maximum Span Drift, After Warmup of One-Half Hour: ±0.2% of full scale*

* Applies to the 3000 "G" Option only and does not include possible drift contributed by the signal conditioner board of the base 3000 instrument.

3. Installation and Cabling

When viewing the 3000 instrument from the rear, the Galvanic Output Board is in the upper left of the rear panel (see Fig. 1). Access to the output signals is through a 20-pin edge card connector with a key slot between contact pads 4 and 5. The user must provide his own cable connection to the card, pinout for which is as follows:

Pin No. (see Fig. 1) Function

2,B SIGNAL 1 OUT

1,A,3,C ISO COM 1

9,K SIGNAL 2 OUT

8,J,10,L ISO COM 2

Cabling of the isolated analog outputs is shown in Fig. 2. Each output is single-ended and returns to its own ISO-LATED COMMON. Each output's SHIELD should be tied to the instrument chassis via one of the screws holding the rear panel.

4. Calibration

NO ADJUSTMENT OF THE G OPTION IS NECESSARY DURING NORMAL USE.** Follow the normal calibration procedure given in the respective 3000 Instrument Instruction Manual.

** As mentioned above, separate ZERO and SPAN adjustment controls are provided on the G Option board for each isolated output, if it is desired to refine the "2.00" gain to which the output has been set prior to shipment. These controls, shown in Fig. 3, may be accessed by removing the 3000 instrument's front panel.

Fig. 1 Rear-Panel Location of 3000G Galvanic Output Board
Pinout for I/O Connectors (REAR VIEW)

3000 "G Option" Board I/O Connector (20-pin) Pin 1 Pin 10 Pin A Pin L Conditioner Board I/O Connector (20-pin)

graph TD
    A["Pin 2 or B"] --> B["G Option Board"]
    C["Pin 1, A, 3, or C"] --> B
    D["Pin 9 or K"] --> B
    E["Pin 8, J, 10, or L"] --> B
    B --> F["Shield"]
    F --> G["External Device"]
    G --> H["Signal"]
    H --> I["+"]
    H --> J["-"]
    G --> K["External Device"]
    K --> L["+"]
    K --> M["-"]

Fig. 3 Location of Internal G-Option Controls

FRONT VIEW 3100G CARD CONTROLS LOCATED BEHIND FRONT PANEL. Conditioner CARD

ISOLATION GUARD P3 P34 P35 R120 U103 R118 49.0K C110 .00uF R119 680K R117 180K R115 100K R113 100K R112 900K C107 .01uF U102 + ISO 1 SUPPLY (+15V) R103 120K - ISO 1 SUPPLY (-15V) R104 1K C105.1uF C106.2uF C107.3uF C108.4uF C109.5uF C110.6uF C111.7uF C112.8uF C113.9uF C114.0uF C115.1uF C116.2uF C117.3uF C118.4uF C119.5uF C120.6uF C121.7uF C122.8uF C123.9uF C124.0uF C125.1uF C126.2uF C127.3uF C128.4uF C129.5uF C130.6uF C131.7uF C132.8uF C133.9uF C134.0uF C135.1uF C136.2uF C137.3uF C138.4uF C139.5uF C140.6uF C141.7uF C142.8uF C143.9uF C144.0uF C145.1uF C146.2uF C147.3uF C148.4uF C149.5uF C150.6uF C151.7uF C152.8uF C153.9uF C154.0uF C155.1uF C156.2uF C157.3uF C158.4uF C159.5uF C160.6uF C161.7uF C162.8uF C163.9uF C164.0uF C165.1uF C166.2uF C167.3uF C168.4uF C169.5uF C170.6uF C171.7uF C172.8uF C173.9uF C174.0uF C175.1uF C176.2uF C177.3uF C178.4uF C179.5uF C180.6uF C181.7uF C182.8uF C183.9uF C184.0uF C185.1uF C186.2uF C187.3uF C188.4uF C189.5uF C190.6uF C191.7uF C192.8uF C193.9uF C200.0kΩ/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/Ω/ ISOLATION GUARD P34A P34B P34B(A) P34B(B) P34B(C) P34B(D) P34B(E) P34B(F) P34B(G) P34B(H) P34B(I) P34B(J) P34B(K) P34B(L) P34B(M) P34B(N) P34B(O) P34B(P) P34B(Q) P34B(R) P34B(S) P34B(T) P34B(U) P34B(V) P34B(X) P34B(Y) P34B(Z) P34B(C) P34B(D) P34B(E) P34B(F) P34B(G) P34B(H) P34B(I) P34B(J) P34B(K) P34B(L) P34B(M) P34B(N) P34B(O) P34B(P) P34B(Q) P34B(R) P35A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0) ISOLATION GUARD P34A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0)A(0) ISOLATION GUARD (CHANNEL 2 ZERO) + ISO 2 SUPPLY (+15V) + ISO 2 SUPPLY (-15V) + ISO 2 SUPPLY (+25V) + ISO 2 SUPPLY (-25V) + ISO 2 SUPPLY (+25V) + ISO 2 SUPPLY (-25V) + ISO 2 SUPPLY (+25V) + ISO 2 SUPPLY (-25V) + ISO 2 SUPPLY (+25V) + ISO 2 SUPPLY (-25V) + ISO 2 SUPPLY (+25V) + ISO 2 SUPPLY (-25V) + ISO 2 SUPPLY (+2Sv)(E)(G)(H)(I)(J)(K)(L)(M)(N)(O)(P)(Q)(R)(S)(T)(U)(V)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(Y) ISOLATION GUARD (CHANNEL 2 ZERO) + ISO 2 SUPPLY (+25V) + ISO 2 SUPPLY (-25V) + ISO 2 SUPPLY (+25V) + ISO 2 SUPPLY (-25V) + ISO 2 SUPPLY (+2Sv)(E)(G)(H)(I)(J)(K)(L)(M)(N)(O)(P)(Q)(R)(S)(T)(U)(V)(W)(X)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y) ISOLATION GUARD (CHANNEL 2 ZERO) + ISO 2 SUPPLY (+25V) + ISO 2 SUPPLY (-25V) + ISO 2 SUPPLY (+2Sv)(E)(G)(H)(I)(J)(K)(L)(M)(N)(O)(P)(Q)(R)(S)(T)(U)(V)(W)(X)(X)(Y)(Z)(W)(X)(Y)(Z)(W)(X)(Y)(Z)(W)

CSR	I	11-18-98	BEX 20000	OCH
CSR	H	9-5-97	BEX 9770	EF8
CSR	6	7-1-96	NEW WISHER 800	SES
SLS	F	3-24-94	CORRECTED 7000	FN
SLS	E	2-24-94	DWG. FING 5 70 & 8200	FN
CLM	D	4-9-93	BEX 800-4940	MN
	C	11-29-90	DBW 100, ALCT-4618 WHIT/HEAT AND CHILL 600	MN
	B	10-31-90	DWG. FING 56100	MN
	A	8-2-98	AWGD 516,036 WITH GROUP DENT, 100 A	MN
DFT.	REV.	DATED	DESCRIPTION	APP. CONTROL
DSA DES.	DSA DES.	DAYTRONIC CORPORATION		MIKANSBURG, OHIO
KTS DFT.	FX.
DATE	1-12-67	REV 11-18-98		REV. LEVEL I
GALVANIC ISOLATED OUTPUT OPTION CARD (3100G)				s3000G NUMBER

DAYTRONIC

Daytronic Corporation

Dayton, OH • [phone]

www.daytronic.com