Power-On Sequence - Mitsubishi Electric MR-J2S B Series Instruction Manual

3. SIGNALS AND WIRING

3.5.3 Power-on sequence

(1) Power-on procedure
1) Always wire the power supply as shown in above section 3.5.1 using the magnetic contactor with
the main circuit power supply (3-phase 200V: L
Configure up an external sequence to switch off the magnetic contactor as soon as an alarm occurs.
2) Switch on the control circuit power supply L
supply or before switching on the main circuit power supply. If the main circuit power supply is not
on, the display shows the corresponding warning. However, by switching on the main circuit power
supply, the warning disappears and the servo amplifier will operate properly.
3) The servo amplifier can accept the servo-on command within 3s the main circuit power supply is
switched on. (Refer to paragraph (2) in this section.)
(2) Timing chart
Main circuit
ON
power
Control circuit
OFF
ON
Base circuit
OFF
ON
Servo-on command
(from controller)
OFF
(3) Forced stop
CAUTION
If the controller does not have a forced stop function, make up a circuit that switches off main circuit
power as soon as EM1 is turned off at a forced stop. When EM1 is turned off, the dynamic brake is
operated to stop the servo motor. At this time, the display shows the servo forced stop warning (E6).
During ordinary operation, do not use forced stop (EM1) to alternate stop and run. The service life of
the servo amplifier may be shortened.
Forced stop
SON accepted
(3s)
60ms
Install an forced stop circuit externally to ensure that operation can be stopped and
power shut off immediately.
Servo amplifier
VDD
COM
EM1
SG
, L , L , 1-phase 230V: L
1 2 3
, L simultaneously with the main circuit power
11 21
10ms
3 - 17
, L , 1-phase: L L
1 2 1
60ms
).
2