What does this module do in an AC500 system?
It provides 32 digital transistor output channels for switching 24 V DC loads from an AC500 or AC500-eCo controller, allowing the PLC to control devices such as solenoids, relays, lamps and indicators.
How many outputs are available and how are they arranged?
There are 32 digital outputs on a single module. The outputs are presented on the associated terminal unit and each channel has its own status indication via a yellow LED.
What is the rated output voltage and current per channel?
The outputs are intended for 24 V DC loads. The rated output current is 0.5 A per channel (500 mA) when used within the specified module and terminal-unit current limits.
Are the outputs protected against short-circuit and overload?
Yes. Each output channel is individually protected against short-circuit and overload. The module also supports automatic reactivation after a short-circuit/overload event.
What is the maximum total current limit to consider when wiring loads?
ABB specifies a maximum of 8 A total current into the terminal unit. When planning the load distribution, ensure the sum of simultaneously energised outputs does not exceed this limit.
Which terminal units are used with this module?
The standard version is used with TU515 or TU516 terminal units. The outdoor (XC) variant is intended for TU516-XC.
Can it be used as local I/O and as remote I/O?
Yes. It can be used as local I/O with AC500 and AC500-eCo CPUs, and it can also be used as remote I/O when installed behind suitable AC500 communication interface modules as part of a fieldbus node.
What happens to the outputs if communication to the controller is lost?
A substitute value for the outputs can be configured so the outputs move to a defined state in the event of a communication loss.
Is it suitable for switching inductive loads such as solenoids?
Yes. The module includes integrated varistors to help with demagnetisation when inductive loads are switched off, which reduces voltage transients at the outputs.
What switching speeds and frequencies can be expected?
The output delay is specified in the millisecond range. For switching frequency, ABB states up to 3.5 Hz for inductive loads and up to 11 Hz for lamp loads; resistive loads allow higher switching rates within the overall system design limits.
Does it have galvanic isolation?
Yes. Galvanic isolation is provided per module, helping to separate the output circuitry from the internal system electronics.
What is the typical leakage current when an output is off?
The specified maximum leakage current with output signal set to 0 is 0.18 mA, which is helpful to know when driving sensitive loads.
How should it be mounted in the control cabinet?
It is designed for DIN-rail mounting in the S500 form factor. Both horizontal and vertical mounting are possible, but vertical mounting may require load derating at higher temperatures.
What environmental protection rating applies in normal installation?
When installed with all modules and terminals plugged in and covers closed, the PLC system arrangement is specified as IP20.