87
AC Relay
Surge absorber (Okaya Denki’s
CR-50500 or equivalent)
AC
Solenoid
Surge absorber (Okaya Denki’s
CR-50500 or equivalent)
Solenoid
If the Analog Input Unit malfunctions due to external noise through the power line
to the Analog Input Unit, insert a noise filter to the power line. The Analog Input
Unit may be influenced by noise if the Analog Input Unit and an electric welding
machine share a single power source or if the Analog Input Unit is operated near
a machine that generates high-frequency electromagnetic waves.
Use a twisted-pair cable for the input wiring to the Analog Input Unit.
Following is the input circuit for the Analog Input Unit.
Internal circuit
1 MΩ
250 Ω
10 kΩ
1 MΩ
250 Ω
10 kΩ
1 MΩ
250 Ω
10 kΩ
1 MΩ
250 Ω
10 kΩ
Analog ground
When the CQM1-IPS02 Analog Power Supply Unit is connected to the
CQM1-AD021 Analog Input Unit and CQM1-DA021 Analog Output Unit, each
analog ground is connected.
Settings Section 3-1