CPX400SA - Power Supply Aim TTi - Free user manual and instructions

Product Type	Programmable DC Power Supply
Brand	Aim TTi (Thurlby Thandar Instruments)
Model	CPX400SA
Voltage Range	0 to 60 V
Current Range	0 to 20 A (up to 420 W)
Power Output	Up to 420 W (PowerFlex envelope)
Operating Modes	Constant Voltage (CV) or Constant Current (CC) with automatic crossover
Selectable Ranges	60V/20A, 60V/7A, 20V/20A, and Custom Limits
Meter Resolution	10 mV, 10 mA
Meter Accuracy	Voltage: 0.1% ± 2 digits; Current: 0.3% ± 2 digits
Output Protection	Over-Voltage Protection (OVP), Over-Current Protection (OCP), Over-Temperature Protection, Reverse diode clamp (up to 3A)
OVP Range	1 V to 66 V (set via screwdriver or remote interface on SP models)
OCP (CPX400SA)	Fixed at 22 A (firmware-based on SP models)
Analog Remote Control	Isolated inputs (0-5V or 0-10V) for voltage and current setting; control outputs for monitoring
Remote Off	Rear panel switch closure turns output off
Output Terminals	Front: 4mm safety binding posts; Rear: Barrier strip (CPX400SA/SP only)
Output Sensing	Selectable local or remote (spring-loaded terminals front, barrier strip rear)
AC Input	110-240 VAC ±10%, 50/60 Hz, 600 VA max
Dimensions (W x H x D)	107 mm x 130 mm x 400 mm (1/4 rack width, 3U height)
Weight	4.25 kg
Operating Temperature	5°C to 40°C, 20% to 80% RH
Storage Temperature	-40°C to 70°C
Safety & EMC Compliance	EN61010-1, EN61326-1
Included Accessories	Power cord, manual (PDF available online)
Settings Lock	Single button press locks voltage and current settings

Frequently Asked Questions - CPX400SA Aim TTi

What is the maximum power output of the CPX400SA?

The maximum power output is 420 W, but it is limited by the PowerFlex envelope. Operating outside the envelope may cause unregulated output.

How do I set the voltage and current limits?

Voltage is set using coarse and fine controls, and current using a single logarithmic control. You can also select from four ranges: 60V/20A, 60V/7A, 20V/20A, or Custom Limits where V_max and I_max can be programmed.

Does the CPX400SA support remote control?

Yes, the CPX400SA supports analog remote control via isolated inputs (0-5V or 0-10V) for setting voltage and current, and outputs for monitoring. It also has a remote off feature.

How can I protect my device from over-voltage?

The CPX400SA has Over-Voltage Protection (OVP) adjustable from 1V to 66V using a screwdriver on the front panel. Response time is typically 1 ms.

What is the accuracy of the meters?

Voltage accuracy is 0.1% of reading ± 2 digits, and current accuracy is 0.3% of reading ± 2 digits. Resolution is 10 mV and 10 mA.

Can I use the CPX400SA in series or parallel with another unit?

Yes, series or parallel operation is possible. Note that for series operation, do not exceed 300 V between any terminal and earth ground. Remote sense connections are required for best regulation.

How do I lock the settings to prevent accidental changes?

Press the S-Lock button on the front panel. The lock accuracy equals the meter accuracy. To unlock, press the button again.

What does the 'Unregulated' indicator mean?

The 'Unregulated' lamp lights when the output is outside the PowerFlex envelope, meaning the voltage or current is no longer regulated. Reduce the load or adjust settings.

How can I clean the CPX400SA?

Disconnect the power before cleaning. Use a soft, dry cloth. Do not use any liquids or solvents. Ensure ventilation slots are free from dust.

Where can I download the user manual?

The manual is available for free in PDF format on notice-facile.com or the official Aim TTi website. You can also request a translated version via email.

USER MANUAL CPX400SA Aim TTi

AIM & THURLBY THANDAR INSTRUMENTS

CPX400S & SA & SP

PowerFlex DC Power Supply

General specifications apply for the temperature range 5^ C to 40^ C. Accuracy specifications apply for the temperature range 18^ C to 28^ C after 1 hour warm-up with no load and calibration at 23^ C.

Typical specifications are determined by design and are not guaranteed.

OUTPUT SPECIFICATION

Voltage Range:	0V to 60V
Current Range:	0A to 20A
Note: In manual operation, actual maxima for voltage and current are typically 1% greater that the figures given above.
Power Range:	Up to 420W
Output Voltage Setting:	By coarse and fine controls.
Output Current Setting:	By single logarithmic control.
Operating Mode:	By single logarithmic control.
	Constant voltage (CV) or constant current (CC) with automatic cross-over, provided that the power demanded stays with the power envelope, see graph. Outside of this envelope the output becomes unregulated.
Operating Ranges:	Four selectable ranges: 60V/20A, 60V/7A, 20V/20A and Custom Limits.Any V/I setting of the 60V/7A or 20V/20A ranges always falls within the appropriate part of the Power Envelope.The 60V/20A range permits any setting up to 60V and 20A but the output will become unregulated if operated outside of the Power Envelope, see above.The voltage and current limits of the Custom Limits range can be set to any V_max between 0.1V & 60V and I_max between 0.01A and 20A. This facility is most useful in limiting operation to a particular part of the Power Envelope.
Settings Lock:(S-Lock)	Voltage and current settings can be locked by a single button press.Lock accuracy is equal to meter accuracy (see Meter Specification)
Output Switch:	Electronic. Preset voltage and current displayed when off.
Output Terminals:	Front panel: Universal 4mm safety binding posts on 19mm (0·75") pitch.Rear Panel: Barrier strip connections (CPX400SA/SP only)
Output Sensing:	Switchable between local and remote. Remote connection by spring-loaded push terminals on front panel and barrier strip on rear panel (CPX400SA /SP only).
Output Protection:	Forward protection by Over-Voltage Protection (OVP) and Over-Current Protection (OCP) trips.Reverse protection by diode clamp for reverse currents up to 3A.
OVP Range:	1V to 66V set by front panel screwdriver adjustment or via the remote interfaces (CPX400SP only). Setting resolution: 100mV. Response time: Typically 1ms. Maximum voltage that should be applied across the terminals is 70V.
OCP Range:	Measure-and-compare over-current protection is implemented in firmware and can only be set via the remote interface (CPX400SP only). Setting resolution: 10mA. Response time: typically 500ms.For CPX400S/SA, OCP is fixed at 22A.
Over-temperature	The output will be tripped off if a fault causes the internal temperature to rise
Protection:Line Regulation:	excessively.Change in output for a 10% line change:Constant voltage: <0.01% of maximum outputConstant current: <0.01% of maximum output
Load Regulation:	Change in output for any load change within PowerFlex envelope, remote sense connected:Constant voltage: <0.01% of maximum outputConstant current: <0.05% of maximum output
Ripple & Noise(20MHz bandwidth):	5mVrms max; typically <3mVrms, <15mV pk-pk, at maximum load, CV mode.
Transient LoadResponse:	<250us to within 50mV of set level for a 5% to 95% load change.
Voltage ProgrammingSpeed (CPX400SP only):	Maximum time required for output to settle within 1% of its total excursion(for resistive load). Excludes command processing time.
Range and Setting		90% Load	No Load		90% Load	No Load
60V 7A	Up	8ms	8ms	Down	80ms	1.5s
20V 20A	Up	8ms	8ms	Down	10ms	1.2s
Temperature Coefficient:	Typically <100ppm/°C
Status Indication:	Output ON lamp.Constant voltage mode lamp.Constant current mode lamp.Unregulated (power limit) lampRemote lamp (CPX400SP only)LAN lamp (CPX400SP only)Trip message on display.

METER SPECIFICATIONS

Meter Types:	Dual 4 digit meters with 10mm (0.39") LEDs. Reading rate 4Hz.
Meter Resolutions:	10mV, 10mA
Meter Accuracies:	Voltage 0.1% of reading ± 2 digitsCurrent 0.3% of reading ± 2 digits

ANALOGUE REMOTE CONTROL (CPX400SA only)

Isolated inputs and non-isolated outputs to set voltage and current limit.

Isolated control input scaling:	Rear panel control inputs (CV and CC) permit external 0V to 5V or 0 to10V signals (with respect to the common Return) to set 0 to 100% of rated output voltage and current. Inputs are protected against excess input voltages up to 60V. Isolation rating with respect to the output is 300V max.
Control input accuracy:	Voltage: 0.3% ±20mV. Input impedance 10kΩ.Current: 0.5% ±50mA. Input impedance 10kΩ.
Control output scaling:	Set values of 0 to 100% of rated output voltage and current generate 0 to 5V signals at the rear panel V_out and I_out outputs. Outputs are short-circuit protected. These signals are referenced to the output control circuit and will therefore be within ~1V of the positive output potential.
Control output accuracy:	Voltage: 0.3% ±20mVCurrent: 0.5% ±50mA.Output impedance: 125Ω.
Remote Off:	Rear panel connections allow a switch closure to turn output off. Remote Off is referenced to the output control circuit and will therefore be within ~1V of the positive output potential.

DIGITAL INTERFACES (CPX400SP only)

Full digital remote control facilities are available through the RS232, USB, LAN and GPIB interfaces.

Voltage Setting:	16-bit, Resolution 10mV, Accuracy ± (0·05% +10mV)
Current Setting:	16-bit, Resolution 1mA, Accuracy ± (0·3% + 0·005A)
RS232:	Standard 9-pin D-connector. Baud rate 9600.
GPIB:	Conforming with IEEE488.1 and IEEE488.2
USB:	Standard USB 2.0 hardware connection. Operates as a virtual COM port.
LAN:	Ethernet 100/10base-T hardware connection. 1.4 LXI Core 2011
Remote Command Processing Time:	Typically <25ms between receiving the command terminator for a step voltage change at the instrument and the output voltage beginning to change.

GENERAL

AC Input:	110V – 240V AC ± 10%, 50/60Hz.Installation Category II.
Power Consumption:	600VA max.
Operating Range:	+5°C to +40°C, 20% to 80% RH.
Storage Range:	-40°C to +70°C.
Environmental:	Indoor use at altitudes up to 2000m, Pollution Degree 2.
Safety & EMC:	Complies with EN61010-1 & EN61326-1.For details, request the EU Declaration of Conformity for this instrument via http://www.aimtti.com/support (serial no. needed).
Size:	107mm x 130mm x 400mm (WxHxD) 1⁄4-rack width x 3U height (optional rack mounting kit available).
Weight: 4.25kg

Sicherheit

Diagram shows remote sense connections, set the sense switch to remote. If remote sensing is not required, do not use the sense wires and set the sense switch to local.

If independent current limits are required set CC to Local and set the limits from the front panel of each unit.

Warning! In series operation take care not to exceed the maximum rated operating voltage (300V) of any terminal with respect to earth ground ( 1 )

Remote Off

A switch closure or logic low between the rear panel Rem Off and COM inputs will remotely turn off the output if it was previously on; the front panel OUTPUT lamp will also go off. Opening the switch between Rem Off and COM will turn the output on again.

Warning! COM is referenced to the output control circuit and will be within \~1V of the positive output potential.

THURLBY THANDAR, CPX400SP, 279730, 1.00 - 1.00

bit 7 =	X	Unbeachtet lassen
bit 6 =	1	Aktivierung der Parallelabfrage
bit 5 =	1
bit 4 =	0
bit 3 =	Sense	Wert des Antwortbits: 0 = low, 1 = high
bit 2 =	?	Bitposition der Antwort
bit 1 =	?
bit 0 =	?

Status Byte Register = 0

Service Request Enable Register = 0

Standard Event Status Enable Register = 0

Execution Error Register = 0

Query Error Register = 0

Parallel Poll Enable Register = 0

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- Teldees it diesem

Thurlby Thandar Instruments Ltd.

Glebe Road • Huntingdon • Cambridgeshire • PE29 7DR • England (United Kingdom)

Telephone: [phone] • Fax: [phone]

International web site: www.aimtti.com • UK web site: www.aimtti.co.uk • USA web site: www.aimtti.us

Email: [e-mail]