Power-On Sequence - Mitsubishi MR-JE-200A Instruction Manual

2. SIGNALS AND WIRING

2.6 Power-on sequence

(1) Power-on procedure
1) Always use a magnetic contactor for the power supply wiring (L1/L2/L3) as shown in section 3.1
of "MR-JE-_A Servo Amplifier Instruction Manual". Configure an external sequence to switch off
the magnetic contactor as soon as an alarm occurs.
2) The servo amplifier receives the SON (Servo-on) in 4 s to 5 s after the power supply is switched
on. Therefore, when SON (Servo-on) is switched on simultaneously with the power supply, the
base circuit will switch on in about 4 s to 5 s, and the RD (Ready) will switch on in further about 5
ms, making the servo amplifier ready to operate. (Refer to (2) in this section.)
3) When RES (Reset) is switched on, the base circuit is shut off and the servo motor shaft coasts.
(2) Timing chart
Power supply
Base circuit
SON (Servo-on)
RES (Reset)
RD (Ready)
No alarming (ON)
ALM (Malfunction)
POINT
The voltage of analog monitor output, output signal, etc. may be unstable at
power-on.
SON (Servo-on) accepted
(4 s to 5 s)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
5 ms
ON
OFF
Alarming (OFF)
10 ms
95 ms
10 ms 5 ms
4 s to 5 s
2 - 27
10 ms 95 ms
10 ms 5 ms 10 ms