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3. SIGNALS AND WIRING
3.12 Power line circuit of the MR-J2S-11KB to MR-J2S-22KB
CAUTION
Always connect a magnetic contactor (MC) between the main circuit power supply
and L1, L2, and L3 of the servo amplifier, and c onfigure the wiring to be able to
shut down the power supply on the side of the s ervo amplifier’s power supply. If a
magnetic contactor (MC) is not connected, co ntinuous flow of a large current may
cause a fire when the servo amplifier malfu nctions.
Switch power off at detection of an alarm. Other wise, a regenerative transistor fault
or the like may overheat the regenerative resist or, causing a fire.
During power-on, do not open or close the motor p ower line. Otherwise, a
malfunction or faulty may occur.
POINT
The power-on sequence is the same as in section 3.5.3.