American Power Conversion MX28B200 - Manual (Page 49)

MX28B200/400 –48 VDC User’s Manual (990-9133) Page 43
4.7. Alarm Outputs (Output Relays)
There are eight alarm output relays designated Relay 1 through Relay 6, Minor, and
Major, respectively. Various system parameters may be programmed to activate any of
these alarm relays when set thresholds are exceeded or specific conditions occur. The
first six relays can also be assigned a priority and routed or “mapped” to other output
alarm relays. Available assignments are “Ignore”, “Major”, “Minor”, and “Relay 1” ···
“Relay 6”. Screens for making these assignments are located at [SYSTEM/OUT-
RLY/RLY-MAP]. This feature makes it possible for a single alarm condition to activate
multiple alarm output relays including the Minor or Major alarm relay. A user defined
name or “alias” may also be assigned to each of the eight output relay alarms. Screens
for making these assignments are located at [SYSTEM/OUT-RLY/ALIAS]. For
information on making wiring connections to the alarm output relays refer to Section 3.9
4.8. External Alarm Inputs (Input Relays)
The controller can monitor any external device that uses a switch or relay to output status
information. Connecting the external device to the input relay connections is the first
step. The four external alarm inputs (also referred to as “Input Relay Alarms”) can be
assigned a priority and routed or “mapped” to alarm output relays. Available assignments
are “Ignore”, “Major”, “Minor”, and “Relay 1” ··· “Relay 6” (do not map relay to itself or the
alarm will never clear). Screens for making the assignments are located at [SYSTEM/IN-
RLY/RLY-MAP]. A user defined name or “alias” may also be assigned to each of these
input alarms. Screens for making these assignments are located at [SYSTEM/IN-
RLY/ALIAS]. For information on wiring connections to these inputs refer to Section 3.10