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  1. IO-Link benefits
  2. Product selection
  3. IO-Link modules

IO-Link field modules

ifm’s IO-Link masters are the perfect solution for decentralised acquisition of sensor signals in the field, plant or machine, without the need for a control cabinet. The performance of the IO-Link infrastructure is significantly enhanced by the IO-Link modules. They have inputs and outputs for binary, analogue and digital signals and can also control actuators. Advantages: The entire dialogue between the controller and the sensors and actuators conveniently takes place via the IO-Link topology. At the same time, all data is accessible at the IT level for evaluation and process optimisation.
This convenient solution is unique on the market and offers an extraordinary flexibility especially in small applications!

Advantages of this product family:

  • Robust plastic housing with IP67 / 68 / 69K rating
  • Excellent shock and vibration resistance
  • For use in industrial applications and hygienic areas
  • Digital input filters and powerful outputs
  • Types with electrical separation of different voltage supplies and IO-Link
  • Types with freely configurable inputs and outputs (binary and analogue)
  • Digital input filters for signal preprocessing
  • Diagnostic capabilities
  • ifm ecolink technology

Your advantages:

  • Easy expandability of inputs and outputs directly in the field via IO-Link
  • Savings through flexible module arrangement and configuration
  • Less time needed for installation and set-up
  • Facilitated fault location
  • Standardisation of machines through modular concept

Product overview of IO-Link modules

Graphic shows how IO-Link modules can be connected

We offer a large and varied portfolio for a wide range of applications and areas of use. The modules are available in two designs:

  • The orange field module of the coolant series is resistant to oils and coolants and suited for general industrial applications.
  • The grey module is ideally suited for hygienic and food applications due to the material used for the housing. It has the high protection rating IP 68 / IP 69K.

A basic distinction is made between the Standard / PerformanceLine and the BasicLine.

Standard / PerformanceLine
  Multiport DI / DO configurable DI DO Al
Coolant AL2605 AL2607 AL2305 AL2303 AL2301 AL2627 AL2325 AL2323 AL2321 AL5021 AL2340 AL2341 AL2330 AL2331 AL2336 AL2384
Food AL2507 AL2205 AL2203 AL2201 AL2527 AL2225 AL2223 AL2221 AL2240 AL2241 AL2230 AL2231 AL2236 AL2284
Ports 8x M12 8x M12 open
cable end		 6x M12 10x M12 6x M12 10x M12 6x M12 4x M12
Max. inputs / outputs
(pin 4+2)		 16 16 12 20 12 20 12 4
Voltage supply external
M12 L-code		 external
M12 A-code		 B-port A-port external
M12 L-code		 external
M12 A-code		 B-port A-port A-port external
M12 A-code		 A-port
Possible binary
input signals		 16 DI 12 DI 20 DI
Possible analogue
input signals		 8 AI
(0...10 V, 4...20 mA)		 4 RTD
(PT100, PT1000,
TCK, TJK)
Possible
input frequencies		 2x fl
0...3000 Hz
Possible binary
output signals		 16 DO 12 DO 20 DO 12 DO
Possible analogue
output signals
Possible PWM / PWM-I
output signals		 8 PWM
2 PWM-I
Electrical separation
US / UA
Current rating per port 2 A 1.8 A 1 A 2 A 1.8 A 1 A 1.8 A
Current rating per module 16 A 2x 1.8 A 1 A 16 A 2x 1.8 A 1 A 2x 1.8 A
without interaction
according to PL-d
(learn more)
Protection rating Coolant series (orange) IP 67
Food series (grey) IP 69k
Connector / socket material Coolant series (orange) - nickel-plated brass
Food series (grey) - stainless steel
BasicLine
DI
Coolant AL2400 AL2401 AL2410 AL2411
Ports 4x M12 8x M12 4x M8 8x M8
Max. number of inputs
(pin 4+2)		 8 16 4 8
Voltage supply internal, A-port
Possible binary
input signals		 8 DI 16 DI 4 DI 8 DI
Possible analogue
input signals
Possible binary
output signals
Possible analogue
output signals
Electrical separation US / UA
Current rating per module
Protection rating IP67
Connector / socket material nickel-plated brass

Voltage supply of IO-Link modules

We provide a wide range of voltage supply options for our IO-Link modules to meet the different requirements in the field. Combined with the right IO-Link masters, this gives you maximum flexibility.

Voltage supply options

To supply the IO-Link module and the sensors and actuators in the field, up to 3 different voltage supplies (pins) per module are available.

US = voltage supply from the master
UA = external voltage supply for actuator
UAi = external voltage supply for sensor
MP = module with digital inputs and outputs and analogue inputs
DX = module with digital inputs and outputs
DI = module with digital inputs
DO = module with digital outputs

Please note that if the IO-Link module is supplied from a B-port, the sensors will be supplied via UA together with the actuators.
This means that if UA is interrupted, the sensors will also fail.
For this reason, we offer versions with an external voltage supply where UAi and UA are separated.

Voltage supply – Performance vs. StandardLine

Non-interaction / fault exclusion

Non-interaction in safety-related applications

In classic safety technology, the voltage supply to hazardous actuators (UA) is switched off centrally via a safety relay.

In modern, decentralised fieldbus systems, the actuators are controlled via “non-safe” outputs of I/O modules, while the voltage supply to these I/O modules is increasingly being switched off centrally via an upstream safety relay or a safety controller.

A fault could theoretically occur in non-safe I/O modules, resulting in the output continuing to be supplied by US even though UA has been switched off. The new DX PerformanceLine modules have been designed in such a way as to rule out this theoretical error ⇒ fault exclusion.

Note: These I/O modules are no safety relays in the sense of functional safety.

The term “passive safety” is often used in this context. This term is very misleading as it suggests a safety device. This is why we expressly refer to “non-interaction” and “fault exclusion”.