Mitsubishi Electric MELIPC MI5A1P User Manual page 166

Protection of input terminals
■Shutdown request input terminal
Countermeasures for electromotive force
When connecting an inductive load, connect a diode in parallel for this load.
For diodes to connect, use those that meet the following conditions.
• Reverse breakdown voltage is ten times or more than circuit voltage
• Forward current is two times or more than load current
IN
(1)
COM
(1) Inductive load
■Shutdown completed output terminal
Maximum open/close frequency when driving L load
For the maximum open/close frequency, use 1 sec. ON, and 1 sec. or more OFF.
Connected load
When using counters, timers, and other devices that use DC/DC converters output module loads, check that the load inrush
current is within the output terminal maximum load current. At ON or during operation, inrush current flows at a constant
frequency from the connected load, and this may lead to damage to the module.
If the load inrush current exceeds the output terminal maximum load current, then ensure that one of the following measures
is taken in order to mitigate the impact of the inrush current.
• Connect a resistor in series with the load
(1)
OUT
COM
(1) Load
• Connect an inductor in series with the load
(1)
OUT
COM
(1) Load
APPX
164
Appendix 10 Wiring