ABB 600477 - Spare parts in stock

The DO820 is an 8 channel 230 V a.c./d.c. relay (NO) output module

for the S800 I/O. The maximum output voltage is 250 V a.c./d.c. and

the maximum continuous output current is 3 A. Al outputs are

individualy isolated. Each output channel consists of optical

isolation barrier, output state indication LED, relay driver, relay and

EMC protection components. The relay supply voltage supervision,

derived from the 24 V distributed on the ModuleBus, gives an error

signal if the voltage disappears, and the Warning LED turns on. The

error signal can be read through the ModuleBus. This supervision can

be enabled/disabled with a parameter.

Features and benefits

• 8 channels for 230 V a.c./d.c. relay Normal Open (NO) outputs

• 8 isolated channels

• Output status indicators

• OSP sets outputs to predetermined state upon error detection

This module has 16 digital outputs. The output voltage range is 10 to

30 volt and the maximum continuous output current is 0.5 A. The

outputs are protected against short circuits, over voltage and over

temperature. The outputs are divided into two individualy isolated

groups with eight output channels and one voltage supervision

input in each group. Each output channel consists of a short circuit

and over temperature protected high side driver, EMC protection

components, inductive load suppression, output state indication

LED and optical isolation barrier.

The process voltage supervision input give channel error signals if

the voltage disappears. The error signal can be read through the

ModuleBus. The outputs are current limited and protected against

over temperature. If the outputs are overloaded the output current

wi l be limited.