172-65627M-09 (SQ10) 18 Oct 2021
59
Electrical Wiring
Power should be supplied at the voltage and frequency applicable for
each SQ version. (Standard models: 100 V AC at 50 Hz or 60 Hz, Oceania
models: 240 V AC at 50 Hz).
Use of a power supply outside the above specification range may cause fires
or electric shock.
Make sure the power supply is OFF before carrying out work on the
wiring or inspections involving disassembly.
If such work is carried out with the power on, there is a danger that unit may
malfunction or electric shock may occur, leading to injury or other accidents.
Make sure that wiring work requiring a special license is carried out by
qualified personnel.
Incorrect wiring work may result in generating heat from the wiring, with the
risk of injuries, burns, fire or damage due to electrical leaks, etc.
Do not allow any cables or wires to come into contact with the steam
piping.
Steam heat will sever wiring, which may result in injury, burns, fire, damage,
etc. caused by electric shock from the wiring.
1. Make sure to carry out electrical connections in accordance with JIS standards
etc. (Control panel arrangement may differ from the picture below.)
(1) Voltage/frequency: 100 V AC 50/60 Hz or 200 V AC
50/60 Hz
(2) Maximum power consumption:
Standard: 60 W
When the cooling circulation unit (optional) is in
operation: 170 W (during operation)
(3) Install an earth leakage circuit breaker that can
automatically cut off the circuit on the power supply
side.
(4) When the breaker cannot be grounded in the
control panel, make sure to perform D class
grounding (with ground resistance of 5
00 Ω or less).
(5) Do not ground to water piping, steam piping, telephone lines or lightning
rods.
2. Connecting the power supply cable
(1) Open the cover of the control panel and pass the
cable through the control board from the cable
connector on the front left.
(2) Connect the power supply cable to the L, N and
E terminal blocks on the far left. (200 V control
panel is shown in the photo on the right.)
(When voltage/frequency is 200 V AC: R, T, E
When voltage/frequency is 200 V and the
cooling circulation unit (optional) control panel is
installed: R, S, T, E)
When wiring the power cable to the terminal
block, use rod terminals or ferrule terminals.
L, N (R, S, T): Power source
E: Ground
CAUTION
