Parameterization
Page 56 of 72
MSM-USM2G-BA-UK-004
5.3.3.4 Submenu Relays (function relays)
In this submenu, the assignment of the 4 function relays to the individual fault alarm functions, buttons
or function inputs takes place. Several events can be defined for a relay, e.g. the grouping of collective
alarms. As soon as one of these events occurs, the relay switches. When the last triggering event has
gone, the relay drops out again. For each relay, a check mark in the "Inverted" field can be used to
specify whether the switching function or its negation is executed. For example, the relay then drops
out when the collective alarm occurs.
Fig. 5.18: Submenu Relays
Function
Meaning
Inverted
If the box is checked, the negation of the switching function is executed.
Collective report 1, 2, 3
The relay is activated by collective alarm 1,2 or 3.
Horn
Horn control
Alive
Live contact of the self-monitoring (permanently assigned to relay 4)
Function input 1, 2
Function input controls relay output
Interface
Control via interface (e.g. IEC 60870-5-101/104 or IEC 61850). Pulse
output with set wipe duration is possible.
Button 1 … 4
Button controls relay output
Button mode
Relay function when controlled via a button or the interface
Static
– The relay is energized as long as the key remains pressed.
Toggle
– The bistable relay changes its state with each excitation (flip-flop
function)
Wipe
– Relay switches with each excitation and drops out again after
the wipe duration (10 ms ... 10 000 ms).
Table 5.5: Function assignment of the relays
The assignment is made via matrix whose rows represent the triggering events
(e.g. pushed button) and whose columns represent the relays. Realized links are marked
by check marks.
