Installation and Configuration 3
Man-1453 Rev.01
Sigma ZXT SI Product Manual
7
Connecting to the Circuit Board
All connections for field wiring are to a single row of terminals along the side of the circuit board. Shielded fire alarm
cable such as FP200 and metal cable glands must be used for all connections to the status unit. The resistance of
any core of any cable must not exceed 25 ohms. The shield of the cable must be bonded securely to the enclosure
via the metal gland.
Wiring should enter the enclosure at the top, bottom or back of the unit using the knock-outs
provided and be formed tidily to the appropriate terminals. Terminals are capable of accepting wires of up to 2.5mm
2
.
Wiring must not go across the front of the circuit board. If cable entries need to be in positions
other than at the knock-outs provided, wiring must be fed well away from the surface of the circuit board.
Figure 3-5
Wiring Convention
CORRECT
INCORRECT
