Mitsubishi Electric MELSEC iQ-R Series Configuration Manual page 181

Each module
■ Power supply module
• Ground the LG and FG terminals after short-circuiting them.
• Use a power cable of 30m or shorter when connecting it to the module power supply terminal.
■ CPU module
When inserted into a compatible module, the SD memory card (NZ1MEM-GBSD) manufactured by Mitsubishi already
conforms to IEC 61131-2.
■ I/O modules
• Install a DC power supply and an I/O module inside the same control panel.
• Keep each DC power cable length to 30m or less.
• Take a surge protective measure, such as installing a surge suppressor, if the relay switches five times or more per minute.
■ Channel isolated analog-digital converter modules, channel isolated digital-analog converter
modules, channel isolated thermocouple input modules, and channel isolated RTD input
modules
Making a relevant module comply with the EMC and Low Voltage Directives requires the wiring as shown below:
(1)
• The AD75CK cable clamp (manufactured by Mitsubishi) allows up to four cables to be grounded together if the outside
diameter is approximately 7mm.
• For the wiring between the connector for external devices and the relay terminal block, use a shielded cable and ground it
to the control panel. In addition, the wire length should be 3m or less.
■ High-speed counter modules
• Install a DC power supply and a high-speed counter module inside the same control panel.
• Keep each DC power cable length to 30m or less.
• Keep the length of cables connected to external devices to 30m or less.
■ Flexible high-speed I/O control modules
• Install a ferrite core to the DC power cables connected to the flexible high-speed I/O control module and the DC power
cables connected to the controller. The ferrite core, ESD-SR-250, manufactured by NEC TOKIN Corporation is
recommended.
• Install a DC power supply and an flexible high-speed I/O control module inside the same control panel.
• Use a shielded cable as the DC power cable when it is extended out of the control panel.
• Keep the length of the cables between the output section and the external devices to 2m or less for open collector output or
10m or less for differential output.
• Keep the length of the cables between the input section and the external devices to 30m or less.
(2)
(3)
(4)
20 to 30cm
(1) Relevant module
(2) Connector for
(3) Inside a control panel
(5)
(4) Relay terminal block
(5) AD75CK
(6) Strip off the jacket.
(6)
Appendix 6 EMC and Low Voltage Directives
external devices
A
APPX
179