AC2517 - Processor IFM - Free user manual and instructions

Product type	AS-i analog input module (slave)
Model	AC2517
Brand	IFM
Measurement	Voltage 0...10 V
Resolution	1 mV
Input resistance (voltage)	> 100 kΩ
Number of channels	4 (channel 1 always active)
Conversion time per channel	20 ms (1 channel), 120 ms (2 channels), 180 ms (3 channels), 240 ms (4 channels)
Power supply	Via AS-i or external 24 V PELV (max. 500 mA)
Sensor supply	Via AS-i (max. 100 mA) or external 24 V
AS-i profile	S-7.3.E (according to AS-i specification V2.1)
Max. number of modules per AS-i cable	31
Sensor connection	M12 connectors (5-pin)
Addressing	Slave address 1...31, via addressing unit AC1144 or cable E70213
LED displays	PWR (green), AUX (green), FAULT (red), AI-1...AI-4 (yellow)
Diagnostic functions	Peripheral fault (out-of-range signal, broken wire, etc.)
Nominal measurement range	0...10 V
Exceeded range (LED on)	10.001...11.5 V
Out-of-range (LED flashing)	> 11.5 V
Ambient conditions (estimate)	Temperature -25...+70 °C (according to IFM modules)
Mounting	On wiring base, torque 0.8 Nm

Frequently Asked Questions - AC2517 IFM

What type of measurement does the AC2517 module perform?

The AC2517 module is an analog input module for voltage measurement in the range 0...10 V.

How many analog channels does the module have?

The module has 4 channels (AI-1 to AI-4). Channel 1 is always active; the others can be activated by parameterization.

What is the measurement resolution?

The resolution is 1 mV.

How to power the module and sensors?

Power can be supplied via the AS-i bus (max. 100 mA for sensors) or via an external 24 V PELV power supply (black flat cable, max. 500 mA). If the need exceeds 100 mA, the external power supply is mandatory.

What types of sensors can be connected?

Voltage sensors with 2 wires or 3 wires without their own power supply can be connected. For 3-wire sensors, an external shunt between pins 3 and 4 is required.

How to address the module?

The address (1 to 31) can be assigned before mounting on an addressing unit AC1144, or later via an addressing cable E70213 on a base with addressing socket (AC5010/AC5011).

What does a flashing FAULT LED mean?

The flashing red FAULT LED indicates a peripheral fault: analog signal out of admissible range (> 11.5 V) or broken wire (for current modules).

What is the total transmission time for 2 channels?

The conversion time is 120 ms for 2 channels, plus 70 ms of AS-i transmission (7 cycles × 5 ms × 2), totaling approximately 190 ms.

Can external power and AS-i power be used simultaneously?

Yes, the module automatically switches to the external 24 V supply when present. The green AUX LED then lights up.

What is the nominal measurement range and what happens outside it?

The nominal range is 0...10 V. Between 10.001 V and 11.5 V, the LED stays on (out of range). Beyond 11.5 V, the LED flashes (out of admissible range) and a peripheral fault is signaled.

USER MANUAL AC2517 IFM

Top-down schematic of a room layout with labeled compartments and fixtures (no text or symbols)

3 4 5 2 1 analog in Strom U+

3 4 5 1 2 analog in Strom U+ U-

3 4 5 1 2 analog in analog - U+ U-

3 4 5 2 1 U+ U-

Function and features

The slave converts analogue input signals and transfers them to the AS-i master via the AS-Interface. The AS-i module operates as a slave with bidirectional data transfer in the AS-i network.

The data transfer to the host is asynchronous according to the AS-i profile S-7.3 and the AS-i specification V2.1.

• Current measurement 4...20 mA (AC2516, AC2566) or voltage measurement 0...10 V (AC2517)
• AS-i profile S-7.3.E
• The sensors are connected via M12 connection cables
  • Maximum number of modules per AS-i system: 31
• R_i voltage measurement > 100 kΩ; R_i current measurement < 50 Ω

• Time for converting the measured values in the slave

• for one channel: 20 ms

• for two channels: 120 ms
• for three channels: 180 ms
• for four channels: 240 ms

- Sensor supply from AS-i (max. 100 mA) or external 24 V PELV voltage source (black flat cable, max. 500 mA)

- Resolution: 1 A (AC2516, AC2566) or 1 mV (AC2517)

- special features AC2566: stainless steel screws, Viton sealing

Installation / Addressing

When you use module lower parts without addressing socket (AC5000 or AC5003) first address the module by placing it onto an addressing unit (AC1144) and assign a free address between 1 and 31.

When you use module lower parts with an addressing socket (AC5010 or AC5011) the modules can be addressed with the addressing adapter E70213 later on.

Mount the module onto the wired module lower part of the AS-i network, tightening torque 0.8 Nm.

As an alternative FC/FC-E lower parts with earthing lead (AC5020...AC5023) can be used to increase the noise immunity.

90 83

4x LED yellow analogue inputs

LED infrared receiver fixture infrared adapter LED red FAULT LED green PWR

label M12 socket

Pin 1: sensor supply +24 V Pin 2: Al+ analogue input Pin 3: sensor supply 0 V Pin 4: Al- analogue input 0 V Pin 5: functional earth

Electrical connection

The analogue module is connected to the AS-Interface via the standardised EMS (supply from AS-i) or the E-EMS (supply from an ext. 24 V PELV voltage source).

If the supply is to be from an external 24 V source, a FC-E lower part (art. no. AC5003 or AC5011) must be used.

If a total of over 100 mA is needed for the sensor supply, the supply must be from an external 24 V PELV voltage source.

The supply is automatically changed when the external 24 V voltage is supplied.

Risk of destruction:

When a combined sensor (pin 2: analogue output, pin 4: 24 V output) is connected ensure that the switching output cannot switch. To do so, set the combined sensor accordingly (e.g. by selection of a switch point which cannot be reached or by the configuration "NPN switching").

Current measurement AC2516, AC2566

For all the following wiring diagrams the indicated pin connection refers to the analogue module.

When an external link between pin 3 and pin 4 is used, the internal link can be deactivated by resetting the parameter bit PO!

The internal link (pin 3 and pin 4) must be activated via the parameter bit P0.

Connection of a 2-wire sensor without own supply

Pin 1: sensor supply +24 V

Pin 2: Al+ analogue input

Pin 3: sensor supply 0 V

Pin 4: AI- analogue input 0 V

Pin 5: functional earth

3 4 5 2 1 analogue in current U+

Connection of a 2-wire sensor with own supply

Pin 1: sensor supply +24 V

Pin 2: Al+ analogue input

Pin 3: sensor supply 0 V

Pin 4: AI- analogue input 0 V

Pin 5: functional earth

3 4 5 2 1 I+ I-

Connection of a 3-wire sensor without own supply

Pin 1: sensor supply +24 V
Pin 2: Al+ analogue input
Pin 3: sensor supply 0 V
Pin 4: AI- analogue input 0 V
Pin 5: functional earth

3 4 5 1 2 U+ analogue in current U-

Connection of a 4-wire sensor without own supply

Pin 1: sensor supply +24 V
Pin 2: Al+ analogue input
Pin 3: sensor supply 0 V
Pin 4: AI- analogue input 0 V
Pin 5: functional earth

3 4 5 1 2 analogue in U+ analogue - U-

When a 4-wire sensor is connected the internal link between pin 3 and pin 4 must be deactivated by resetting the parameter bit P0.

Voltage measurement AC2517

The parameter bit P0 is of no importance for the AC2517!

Connection of a 2-wire sensor without own supply

Pin 1: sensor supply +24 V

Pin 2: Al+ analogue input

Pin 3: sensor supply 0 V

Pin 4: Al- analogue input 0 V

Pin 5: functional earth

3 4 5 2 1 U+ U-

Connection of a 3-wire sensor without own supply

Pin 1: sensor supply +24 V

Pin 2: Al+ analogue input

Pin 3: sensor supply 0 V

Pin 4: AI- analogue input 0 V

Pin 5: functional earth

3 4 5 1 2 U+ analogue in voltage U-

When a 3-wire sensor without own supply is connected the link between pin 3 and pin 4 has to be created externally!

Parameter setting of the analogue modules

Parameter bit	Designation	Description
P0(not used for AC2517)	selection2/3 wires / 4 wires	1	2-/ 3-wire operation (link active)
		0	4-wire operation (link inactive)
P1, P2	channel activation	P1	P2	channel1	channel2	channel3	channel4
		0	0	on	off	off	off
		0	1	on	on	off	off
		1	0	on	on	on	off
		1	1	on	on	on	on
P3	periphery fault	1	periphery fault indication active
		0	periphery fault indication not active

Operation AC2516, AC2566

Check whether the unit operates correctly. Display by LEDs:

• LEDs yellow Al-1...Al-4 on: analogue signal in the measuring range
- LEDs yellow AI-1...AI-4 flashing: analogue signal outside the measuring range, no sensor connected or wire break
- LEDs yellow Al-2...Al-4 out: no sensor connected (at least one LED flashes because not all channels can be deactivated via the parameter bit P1/P2 (channel activation, channel 1 is always activated)
• LED green PWR on: AS-i voltage applied
• LED green AUX on: external 24 V voltage applied
- LED red FAULT on: AS-i communication error, e.g. slave address 0
- LED red FAULT flashes: periphery fault*

* Periphery fault

A periphery fault is displayed:

• if at least one of the analogue signals is outside the value range
• if nothing is connected to at least one analogue channel although the respective channel is activated
• if a wire break occurred

Operation AC2517

Check whether the unit operates correctly. Display by LEDs:

• LEDs yellow Al-1...Al-4 on: respective channel is activated analogue signal in the measuring range or no sensor connected (it cannot be differentiated whether the 0 V signal is applied or whether no sensor is connected) (channel 1 is always activated)

• LEDs yellow Al-1...Al-4 flashing: analogue signal outside the measuring range (outside range)

• LEDs yellow Al-2...Al-4 out: respective channel is not activated
• LED green PWR on: AS-i voltage applied
• LED green AUX on: external 24 V voltage applied
- LED red FAULT on: AS-i communication error, e.g. slave address 0
- LED red FAULT flashes: periphery fault*

* Periphery fault

A periphery fault is displayed:

- if at least one of the analogue signals is outside the value range

Measuring range of the analogue input modules

The measuring ranges, the states of the LEDs and their meaning are indicated in the following tables:

Analogue input module 4 ... 20 mA - AC2516, AC2566

Range4 ... 20mA	Unitsdec.	Unitshex.	LED AI1...AI4 analogue	Meaning
< 1 mA 327	67 7FFF flashes wire break
1 mA ...3.999 mA	1000 ... 3999	3E8 ... 0F9F on below nominal	low nominal	range
4 mA ...20 mA	4000 ... 20000	0FA0 ... 4E20 on nominal range
20.001 mA ...23 mA	20001 ... 23000	4E21 ... 59D8	on	above nominal range
> 23 mA	32767	7FFF	flashes	outside range

Analogue input module 0 ... 10 V - AC2517

Range0 ... 10 V	Unitsdec.	Unitshex.	LED analogue	Meaning
0 ... 10 V 0000	0 ... 10000 0000	... 2710 on nominal range
10.001 V ... 11.5 V	10001 ... 11500	2711 ... 2CEC on	above nominal	range
> 11.5 V	32767	7FFF	flashes	outside range

Transmission time of the analogue values

The transmission time of the analogue values depends on the conversion time of the analogue signals into digital signals in the AS-i module and on the transmission time via the AS-Interface.

Example: Transmission time of 2 analogue channels

The conversion time for 2 analogue input signals into digital signals is 120 ms. The transmission time of the 2 16-bit values via the AS-interface ideally is 7 AS-i cycles per value. For a cycle time of 5 ms per ASi cycle this results in a transmission time of 2 × 7 × 5 ms = 70 ms via the AS-Interface.

Thus the total transmission time for 2 analogue values ideally is 120 ms (conversion time) + 70 ms (transmission time) = 190 ms.

Example: Transmission time of 4 analogue channels

The conversion time for 4 analogue input signals into digital signals is 240 ms. The transmission time of the 4 16-bit values via the AS-interface ideally is 7 AS-i cycles per value. For a cycle time of 5 ms per AS-i cycle this results in a transmission time of 4 × 7 × 5 ~ms = 140 ~ms via the AS-Interface.

Thus the total transmission time for 4 analogue values ideally is 240 ms (conversion time) + 140 ms (transmission time) = 380 ms.

3 4 5 2 1 U+ U-