89NU04E ABB Annunciation Module

The annunciation module 89NU04 is used both PROCONTROL multi-purpose processing stations and in monitoring stations.
It is used on the one hand for displaying different disturbance annunciation signals(generated in the station) by means of light emitting diodes on the front of the module.
On the other hand, these signals are transferred simultaneously via the appropriate outputs to the alarm annunciation system and passed on to the control system operator station.
The module is available in two versions:
89 NU04-E/R1 with 16 function units; for use in multi-purpose processing stations.
89 NU04-E/R2 with 20 function units; for use in monitoring stations
Features:
The module requires the voltage US as the operating voltage. It does not have an interface to the PROCONTROL bus system. The disturbance annunciation signals generated by the corresponding annunciation facilities are transferred to the module hard-wired in parallel (conventional) configuration. This also applies to the transfer of the output signals from the module to the alarm annunciation system. All output signals are output from the module via relays. The module is potential-isolated if the relays are supplied by an external voltage (see "Operating modes",  jumpers for external power supply).