81EA04 ABB Analog Input Module

Description:

81EA04 ABB Analog Input Module module can be plugged into any station belonging to the PROCONTROL bus system. lt is equipped with a standard interface for the PROCONTROL station bus.
It transmits the converted input signals in the form of telegrams via the station bus to the PROCONTROL bus system. The telegrams are monitored before being sent and are given parity bits. This way, checking for fault-free transmission on the receiver side is ensured.
The telegrams received via the station bus are checked by the module on the basis of their parity bits for fault-free transmission.
The individual function units are mutually non-interfering as well as non-interfering with the processing section (station bus).
For each function unit, one of the four signal ranges 0 ... 20 mA, 4 ... 20 mA, 0 ... 5 mA or 0 ... 50 mA can be selected.
Activation of internal monitoring circuits or input sianal monitoring circuits is indicated as disturbance annunciation ST(general disturbance signal) on the module front. Activation of internal monitoring circuits is also indicated as disturbance annunciation SG(module disturbance) on the module front.
Disturbance voltages on the input lines are suppressed by means of protective circuits inside the module.

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