Wiring; Power Supply Wiring - IMO Precision Controls K7 Series User Manual

Chapter 9 Installation and Wiring

9.2 Wiring

The followings explains the wiring instructions for use of the system.

9.2.1 Power Supply Wiring

1)Use AC 100
2)When voltage fluctuations are larger than the specified value, connect a constant-voltage transformer
Use a power supply which generates minimal noise across wire and K7 and ground when excessive noise
Generated, connect an insulating transformer.
3)Use a power supply which generates minimal noise across wire and across PLC and ground. (When excessive noise is
generated, connect an insulating transformer)
4) When wiring, separate the PLC power supply from those for I/O and power device as shown below.
AC100 240V
240V (50Hz 60Hz) as the main power.
Constant-voltage transformer
Mai n power
PLC power
I/O power
Main circuit
T1,T2 : rated voltage transformer
K7 base unit
T1
T2
9-
.
AC100-240V
FG
PLC
I/O device
Main circuit device