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MX28B200/400 –48 VDC User’s Manual (990-9133) Page 19
Output Relay Connections
RELAY
OUTPUT
TERMINAL
DESIGNATION
NO-NC-C
USER ALARM NOTES
RELAY #1
RELAY #2
RELAY #3
RELAY #4
RELAY #5
RELAY #6
MINOR
MAJOR
J1
NO1-NC1-C1
NO2-NC2-C2
NO3-NC3-C3
NO4-NC4-C4
J2
NO5-NC5-C5
NO6-NC6-C6
NO7-NC7-C7
NO8-NC8-C8
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3.10. External Alarm Input Connections
Four external alarm inputs with assignable priority levels are available. These alarm
inputs respond to external dry contact closures between normally open (NO) and
common (C) or contact openings between normally closed (NC) and C.
External Alarm Input Definition
External Alarm Source
(non-alarm state)
Connect To Input
Alarm Terminals
OPEN
CLOSED
NO-C
NC-C
Connector J4 is located on the interface card mounted in the top left side of the unit.
Refer to Figure 3.8-3 for Interface board connections. Systems are shipped with jumper
wires connecting each NC and corresponding C contact. A jumper wire should be
removed only if the corresponding NC-C contacts are going to be used.
External Alarm Input Connections
EXTERNAL
ALARM
INPUT
J4 TERMINAL
DESIGNATION
(NO-NC-C)
USER ALARM NOTES
#1
#2
#3
#4
NO1-NC1-C1
NO2-NC2-C2
NO3-NC3-C3
NO4-NC4-C4
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