Appendix A Connection Data
MX-2100/2104
Installation and Operation Manual
A-4
DC Power Input Connector
A.4 Alarm Relay Connector
The Alarm Relay connector is a 6-pin RJ-12 connector with dry contacts for
relaying alarms from the MX-2100 to activate external equipment. The Alarm
Relay connector can also be used to relay external equipment information to the
MX-2100. Connector pin functions are given in the following table.
Table A-4. Alarm Relay Connector Pinout
Pin Direction
Designation
Function
1
Out
+5V
+5 VDC output
2
In/Out
Relay F
Main relay –Common contact
3
In/Out
Relay M
Main relay – NC (Normally
Closed) contact
4
In/Out
Relay B
Main relay – NO (Normally
Open) contact
5 In/Out FGND
–
6
In
FAN
Fan status input, active low (TTL)
A.5 DC Power Input Connector
The DC input power connector used on the MX-2104 and the KPS.3, KPS.5,
KPS.7, and DC-powered KM-Ringer modules, is a 3-pin terminal block type
connector. Connector pin functions are marked on the panel. Refer to the
DC Power Supply Connection Supplement
at the end of this manual for details
.