How To Check For Error Using The Leds - Mitsubishi Electric FR-A7NC Instruction Manual

9

HOW TO CHECK FOR ERROR USING THE LEDS

9.1 When one inverter is connected
The following diagram shows the system configuration with one inverter. The diagram indicates how the
cause of the fault can be checked with the LED status of the inverter communication option (FR-A7NC).
(In this example, assume SW, M/S, and PRM LEDs of the master module are OFF (master module is in
normal operation).)
96
Power CPU Master
supply
module
Operation status
indication LED
SD L.RUN
RD L.ERR
SD L.RUN
RD L.ERR
RUN
Station 1
Inverter
FR-A7NC
RUN