Product: ABB 23BA22 1KGT004800R5002 Command Output Monitoring Board

Description

After receipt and successful check of an object command by the communication unit and the output board module the following steps will be executed before final command release:

• The (1-out-of-n) check on the command output monitoring board 23BA22 is activated.

•The resistance of the interposing relay in the switched output circuit is measured and compared with the parameterized upper and lower limits.

If the resistance is within the limits the object command output to the selected equipment is will be activated via the binary output board 23BA20.

• The command output pulse timer is started, pulse duration is monitored, and the command output is deactivated by response indication or when the pulse time has elapsed on the 23BA22.

• If the test conditions during the checks are not fulfilled the command will be cancelled.

In normal applications only one command output monitoring board 23BA22 is needed for the (1-out-of-n) check in a RTU station.

In case of inserting different interposing relay types with different resistance values, two independent check circuits can be driven by the 23BA22 board, if the auxiliary test voltage is generated by a separate isolated voltage source.

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ENTEK:

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