ABB AC500 V3 - Page 330

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Table 74: Assignment of the other terminals:

Terminals Signal Description

1.0 to 1.7 I0 to I7 Input signals of the 8 digital

inputs

1.8 to 4.8 UP Process supply voltage +24 V

1.9 to 4.9 ZP Reference potential for the 8

digital inputs and the process

supply voltage

2.0 R0 Common contact of the first

relay output

3.0 NO 0 Normally-open contact of the

first relay output

4.0 NC 0 Normally-closed contact of the

first relay output

2.1 R1 Common contact of the

second relay output

3.1 NO 1 Normally-open contact of the

second relay output

4.1 NC 1 Normally-closed contact of the

second relay output

: : :

2.7 R7 Common contact of the eighth

relay output

3.7 NO 7 Normally-open contact of the

eighth relay output

4.7 NC 7 Normally-closed contact of the

eighth relay output

The internal power supply voltage for the module's circuitry is carried out via the I/O bus

(provided by a communication interface module or a CPU). Thus, the current consumption from

24 V DC power supply at the terminals L+/UP and M/ZP of the CPU/communication interface

module increases by 2 mA per DX522.

The external power supply connection is carried out via the UP (+24 V DC) and the ZP (0 V DC)

terminals.

Device specifications

I/O modules > Digital I/O modules

2022/01/313ADR010278, 3, en_US330

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