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4 Wiring connections
WARNING
• Electric work must be performed by an authorized technician. Improper wiring work may result in electric
shock or fire.
• Turn off the power supply before performing wiring work.
CAUTION
• To avoid damage to the terminal block, do not connect an AC power supply (100-240 VAC) to the M-NET
transmission line terminal block.
4-1. Installing and uninstalling the cover
Unscrew the three screws on the cover to remove it as shown in the figure below.
Reinstall the cover using the three screws that were unscrewed.
4-2. Connecting the power cable and protective earth cable
• Connect the power cable and the protective earth cable as shown in the figure below.
Use an M3.5 ring terminal to the power cable, and connect an M4 ring terminal to the protective earth cable before
connecting them to their corresponding terminals (power supply terminal block or protective earth terminal).
• Be sure to connect the L2/N phase of the power cable to the L2/N side of the power supply terminal block (TB1).
• Secure cables with cable clamps.
Power supply
100-240 VAC
50 Hz/60 Hz
B
B Residual current
circuit breaker
A Overcurrent breaker
CAUTION
• Install an overcurrent breaker and a residual current circuit breaker for the power wire to each BAC-HD150 unit.
Use a bipolar breaker (2P2E) with a minimum contact distance of 3 mm (
• Install a breaker for each BAC-HD150 so that turning off the power to one BAC-HD150 will not affect the rest of
the devices in the system.
• When using a fuse instead of an overcurrent breaker, use it in combination with a main switch (capacity: 3 A).
Power cable
A
Protective earth cable
Earth
Power
cable
Cable
clamps
- 12 -
Power supply
terminal block
TB1
L/L1 N/L2
Protective
earth terminal
Protective
earth cable
/
in).
1
8
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