Omron CP1H CPU Operation Manual page 437

Analog Output Units
Internal Circuits
Note
1. Connecting the Analog Output Unit
Connect the Analog Output Unit to the CPU Unit.
CPU Unit
2. Wiring Analog Outputs
Analog ground
■ Wiring for Analog Outputs
V OUT
Analog
I OUT
output
COM
unit
(1) Separate wiring from power lines (AC power supply lines, high-voltage
lines, etc.)
(2) When there is noise in the power supply line, install a noise filter on the
input section and the power supply.
(3) When external power is supplied (when range codes are set), or when the
power is interrupted, there may be a pulse status analog output of up to
1 ms. If this status is a problem, take the following measures.
• Turn ON the power to the CP1H CPU Unit, check the operation status,
and then turn ON the power at the load.
• Turn OFF the power to the load and then turn OFF the power to the
CP1H CPU Unit.
CPM1A-DA041
Analog Output Unit
OUT
CH
I OUT1 VOUT2 COM2 I OUT3 VOUT4 COM4 AG
VOUT1 COM1 I OUT2 VOUT3 COM3 I OUT4 NC
V OUT1
Analog output 1
I OUT1
COM1 (−)
to
to
V OUT4
Analog output 4
I OUT4
COM4 (− )
NC
+
Analog
Analog
device
with
output
voltage
−
unit
input
Section 7-3
+
V OUT
Analog
device
I OUT
with
−
current
COM
input
403