ABB AC500 PLC Module Wiring Guide

2.2 Switching output module

Taking DO561 (8-channel transistor output) as an example:

The output needs to be connected to an external power supply to the UP+and ZP terminals.

Output without short circuit protection, external 3A fast melting fuse is required.

DO571 is a relay output that supports 24VDC/240VAC loads, and the output contacts require external 5A fuse protection.

DO572 is a thyristor output suitable for AC loads.

2.3 Switch input/output hybrid module

Such as DC522 (16 channel configurable), DX561 (8-in 8-out transistor), DX571 (8-in 8-out relay), etc.:

Some channels can be configured as inputs or outputs through software.

When wiring, it is necessary to distinguish between the input common terminal and the output power polarity.

The relay output module can mix DC and AC loads, but it is necessary to ensure synchronous power supply.

Analog I/O module wiring details

3.1 Analog input module

AI523: 16 channel 12 bit resolution, supports voltage/current/thermistor/thermocouple input. When measuring thermal resistance, the module provides a common constant current source.

AI531: 8-channel 15 bit resolution, supports multiple sensor types and differential input measurements, suitable for high-precision applications.

AI561/AI562/AI563: They are 4-channel universal analog input, 2-channel thermistor input, and 4-channel thermocouple input, all of which require shielded cables and single point grounding.

3.2 Analog output module

AO523: 16 channel 12 bit output, supports voltage/current mode.

AO561:2 channel 11-12 bit output, voltage and current output terminals are independent, attention should be paid to mode settings and external power supply voltage (≥ 10V).

3.3 Analog Input Output Hybrid Module

AX521/AX522: Provides 4 inputs and 4 outputs, 8 inputs and 8 outputs respectively, with a resolution of 12 bits, suitable for closed-loop control systems.

AX561:4 inlet and outlet structure, suitable for small process control applications.

Special function module wiring

4.1 Hybrid module DA501

Integrated with 16 DI channels, 8 configurable DI/O channels, 4 AI channels, and 2 AO channels, it has strong integration and is suitable for compact control cabinets.

4.2 Position Module CD522

Integrated encoder interface, PWM output, and digital I/O, supporting differential RS422, TTL, totem pole, and SSI encoder access.

4.3 Bus interface module

Including CS31, PROFIBUS, PROFINET, EtherCAT, CANopen and other bus modules, such as CI501-PNIO, CI541-DP, CI581-CN, etc. Attention should be paid when wiring:

Enable the bus terminal resistor (end node).

Single point grounding of shielding layer.

Use recommended bus cables and connectors.

4.4 CPU Integrated I/O

PM554 and PM564 CPUs come with digital and analog I/O. When wiring, attention should be paid to:

Power type (24VDC or 100-240VAC).

The transistor output requires external fuse protection.

The relay output can be connected to DC or AC loads, but it must not exceed the contact capacity.

Communication module and serial interface

CM572-DP: PROFIBUS DP master station module requires shielded twisted pair cables with terminal resistors at the end.

CM574-RS: Dual serial port module, supporting RS232/RS485/RS422.

CM577-ETH: Ethernet module with dual port switch.

CM579 series: Supports EtherCAT and PROFINET IO.

CPU serial port: COM1 is usually used for programming or Modbus communication, while COM2 is an optional expansion port. When using non isolated RS485 communication, it is recommended that the distance within the same building should not exceed 30m, and isolators should be used for long-distance or cross building communication.

Summary and Precautions for System Wiring

Safety first: All wiring operations must be carried out in a power-off state.

Interference prevention: Reasonable wiring, correct grounding, and the use of shielded cables are the core of anti-interference.

Module compatibility: Some modules (such as DX571, AO561) cannot be used for FBP remote expansion.

Power stability: If the power supply voltage of the analog module is lower than 10V, it may cause abnormal output.

Diagnosis and maintenance: Unused analog channels should be set to "unused" to avoid false alarms.

500SCM01 1MRE450004R1
500TRM02 1MRB150011R0001
500TRM02 1MRB150011R1
500TTM02 1MB150021R01161HF930712X010
AX411/50001
CP405 A0 1SAP500405R0001
KP2500
PDD500A101
PDD500A101
PDD500A101
PDD500A101
PFEA111-65 3BSE050090R65
PFEA111-65 3BSE050090R65
PFEA111-65 3BSE050090R65
PFEA111-65 3BSE050091R65
PFEA112-20 3BSE050091R20
PFEA112-20 3BSE050091R20
PFEA112-65 3BSE050091R65
PFEA113-65 3BSE050092R65
PFEA113-65 3BSE050092R65
PFEA113-65 3BSE050092R65
PPD113B01-10-1500003BHE023784R1023
PPD512 A10-15000 3BHE040375R1023
PPD512A10-150000
SUE3000 1VCF750090R0804
TET106 11355-0-6050000