Page 162 of 456 Configuring the system monitor
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 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.
