Wiring The Power Supply; Common Precautions - Panasonic AFP7PSA1 User Manual

Installation and Wiring

4.2 Wiring the Power Supply

4.2.1 Common Precautions

 To avoid the influence of noises
 Use a low noise power supply.
 The inherent noise resistance is sufficient for the noise superimposed on the power wires,
however, the noise can be attenuated further by using the isolation transformer.
 Also, twist the power supply cables to minimize adverse effects from noise.
 Keep the power supply wiring separate
Wiring to the CPU unit, input devices, and power equipment should have separate wiring
systems.
 Measures regarding power supply sequence (start up sequence)
 Have the power supply se
the power supply for input and output.
 If the input/output power supplies are turned off before the power PLC, the CPU unit will
detect the input fluctuations and may begin an unscheduled operation.
4-8
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
quence such that the power supply of PLC turns off before