Product Overview
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. All outputs are individually 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.
Detailed data
|
Isolation |
Individually isolated, channel-to-channel and to circuit common |
|
Current limiting |
Can be current limited by the MTU |
|
Maximum field cable length |
600 meters (656 yards) |
|
Event recording accuracy |
-0 ms / +1.3 ms |
|
Rated insulation voltage |
250 V |
|
Dielectric test voltage |
2000 V a.c. |
|
Power dissipation |
Typ. 2.9 W |
|
Current consumption +5 V Modulebus |
60 mA |
|
Current consumption +24 V Modulebus |
140 mA |
Communications - AC 800M Communication interfaces
The AC 800M controller family includes a selection of communications modules that make it possible to access a wide range of field devices and third-party systems. The interfaces include:
• Ethernet-based interfaces/protocols
• Serial communications
• Interfaces to ABB equipment
• Communication interfaces to heritage systems
Frequently Asked Questions
Q1: What is the primary function of the ABB DO820 module?
The DO820 module provides 16 relay-based digital outputs to control electrical devices in industrial automation systems.
Q2: Is the DO820 compatible with all ABB control systems?
Yes, it is designed for seamless integration with ABB's Distributed Control Systems (DCS).
Q3: Can the DO820 module handle high voltages?
Yes, it supports a maximum voltage of 230V AC with an isolation voltage of up to 2500V AC for safety.
Q4: Does the module require additional cooling?
No, the DO820 is designed to operate within its specified temperature range without additional cooling.
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