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Installing Bus Devices
Page 40
Figure
3-9: SMPS Inside a Metal Box
Note:
Prior to installation, calculate the total current consumption of the connected
devices in order not to exceed the power supply’s maximum current
consumption!
Important:
To prevent risk of electric shock, disconnect all power sources before servicing!
Under no circumstances should mains be connected to the PCB other than to the
main terminal block!
2.
Locate the SMPS metal box in a clean and dry location, close to the mains.
3.
Open the SMPS box by releasing the attaching screws.
4.
When attaching the box to the wall, it is recommended to use Ø4.2mm, 32mm
length screws (DIN 7981 4.2X32 ZP)
5.
Connect the incoming mains cable to the main fuse terminal block.
6.
Wire the SMPS terminals as follows:
a.
Connect the bus Terminals
: Connect only three of the first four terminals at
the left of the Power Supply expansion module to the main panel's 4-wire
bus, as follows
Expansion Bus Terminals
COM
BUS
BUS
Color
BLK (Black)
YEL (Yellow)
GRN (Green)
Important:
Do NOT make any connection to the AUX (RED) terminal from the main
panel. It is used for the outgoing bus to supply voltage to other modules.
Notes:
The power supply expansion module is connected to the AC power supply.
This module, therefore, supplies power to all modules and/or keypads
located AFTER the point that it is connected to the bus.
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