Instruction manual

Maintenance and Test Procedures
44 Access Control Design Guide
LEDs on the Elevator Interface Board
LED1 (OK) – When the board is functioning correctly, this should flash at two-second intervals (one second
on and one second off).
LED2 (Data Tx) – Illuminated when transmitting data.
LED3 (Data Rx) – Illuminated when receiving data.
LED4 (PWR) – Lit steadily while power is applied.
LED5/7/9/11 (Reader 1/2/3/4 Tx) – Illuminated when transmitting data to a 20mA reader (not applicable to
slave unit).
LED6/8/10/12 (Reader 1/2/3/4 Rx) – Illuminated when receiving data from a 20mA reader (not applicable to
slave unit).
Fuse Ratings
WARNING FOR ELEVATOR NODES - ELECTRICAL SHOCK HAZARD!
DISCONNECT AND ISOLATE ALL POWER TO THE EQUIPMENT, INCLUDING
TO THE FLOOR RELAYS, BEFORE REPLACING A FUSE.
It is always good practice to disconnect supply and battery power before replacing a fuse.
Note: An automatically-resettable fuse rated at 1A is provided for each reader on a 2DBC, 4DBC, 8DBC,
2DC, 4DC, 4DCN and 8DC. If an automatically resettable fuse trips, you must remove the load completely
before the fuse resets.
Power supply board: Refer to Power Supply Board Installation Instructions.
Elevator Interface board (slave unit): F1 (input fuse), 2.5A Fast.
AC 24/4: FS1 (input fuse), 1A Fast.
OC 4/24: F1 (input fuse), 1.6A Slow.
2DC: F1 (input fuse), 1A Fast.
4DC: F1 (input fuse), 2A Fast.
8DC: F1 (input fuse), 6.3A Slow.
4DCN: F1 (input fuse), 3.15A Slow.
2DBC: F1 (input fuse), 1.6A Slow.
4DBC: F1 (input fuse), 3.15A Slow.
8DBC: F1 (input fuse), 6.3A Slow.
DBU: F1 (input fuse), 4A Fast.
F2 4DCU-1 (not used, output from PL1), 2.5A Slow.
F3 4DCU-2 (not used, output from PL2), 2.5A Slow.