IWAKI PUMPS EHN-R, Инструкция по эксплуатации

Страница: 27 / 92

27
Ins
tal
lation
Wiring
NOTE
• Do not share a power source with a high power equipment which may generate surge
voltage. Otherwise electronic circuit may fail. The noise caused by the inverter also
affects the electronic circuit.
• Power voltage should be charged at a sitting via a switch or a relay. Otherwise CPU
may malfunction. See page 28 for the precautions for ON-OFF control by the relay.
When the power is applied at a sitting When the power is applied gradually
Surge voltage
The electronic circuit in the control unit may fail due to surge voltage. Do
not place the pump close to the high power equipment of 200V or more
which may generate large surge voltage.
If the use near the high power equipment is inevitable, take any of the fol-
lowing measures.
• Install a surge absorption element (ex. a varister with capacity of 2000A
or more) via power cable.
Recommended varisters
Panasonic ERZV14D431
KOA NVD14UCD430
See manufacturer's catalogues for detail.
• Install a noise cut transformer via power cable.
POWER
ON
OFF
TIME
POWER
ON
OFF
TIME
Surge absorption element
Noise cut transformer