
Page 162 of 456 Configuring the system monitor
NN43021-310 Standard 02.01 December 2007
Note 1: The system monitor to MDF cable is available in three lengths:
NT8D46BH (9.75 m/32 ft), NT8D46EH (30 m/100 ft), and NT8D46DH
(45 m/150 ft).
Note 2: If additional contact closures are required through the J3
REMALMA or REMALMB leads (for a hard alarm in case a column loses
power, for example), additional system monitor to MDF cables can be
ordered.
Table 12
NT8D22 System Monitor – pin assignments at J3
Pin Direction Color Signal name Description
1 out BL/W REMALMA Remote major alarm (connect for external alarm)
2 out OR/W REMALMB Remote major alarm return (connect for external
alarm)
3 out GR/W CE-SYSLT CE system line transfer (upgraded systems only)
4 — BR/W MDF0/GND MDF return (ground)
5 in SL/W CEALMIN CE alarm (upgraded systems only)
6 — BL/R SYSLTIN System line transfer in (upgraded systems only)
7 out W/BL LFBEN Line forced bypass enable (connect for PFTU
operation)
8 out W/OR LFBENR Line forced bypass enable return (connect for
PFTU operation)
9 — W/GR GND Ground
Note: Pins 6, 8, and 9 should be connected and grounded at the MDF.
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