2
Electrical installation
2.1
Electrical installation
The display is designed for continuous operation and no power switch is fitted to the unit. It is rec-
ommended that an external switch and fuse be provided to allow the unit to be removed for servicing.
The terminal blocks are plug in screw type for ease of installation and allow for wires of up to 1.5mm
2
(2.5mm
2
for relay, AC or isolated DC supply connections) to be fitted. Connect the wires to the ap-
propriate terminals as indicated below. Refer to other details provided in this manual to confirm proper
selection of voltage, polarity and input type before applying power to the instrument. When power is
applied the instrument will cycle through a display sequence, indicating the software version and other
status information.
2.2
Main circuit board layout
2.3
38, 45, 57mm LED or 39mm electromagnetic display power supplies
AC power connections use a plug in connector with screw terminals at P12 (2.5mm
2
max. wire). Isolated
DC supplies (12-48VDC) use the same terminals. Non isolated DC supplies (24VDC only) may be con-
nected directly to the main circuit board power supply connector via the plug in connector terminals at
P11 (1.5mm
2
max. wire diameter). Note supply type is factory configured.
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LDRSMANADD-2.3-0
