Servo Amplifier Initialization Time - Mitsubishi Electric MELSERVO-J2S Series Manual

２.６.４ Servo Amplifier Initialization Time
This section explains the initializing time of the servo amplifier (the time taken between power-on and servo-on
reception). The initializing time is 2 s at maximum for the MR-J2S-_A_servo amplifier, but 3.5 s at maximum for the
MR-J4-_A_servo amplifier. Note the initializing time difference upon replacement.
<Points to note upon replacement>
(1) When using the electromagnetic brake to prevent a drop in a vertical lift application or the like with an
external timer to adjust the brake release time, the lift may drop due to a longer servo-lock time. Adjust the
brake release time as necessary or use MBR (electromagnetic brake interlock signal).
(2) A longer servo-on time at power-on may cause a delay in the motor starting time after power-up. Please
take note.
(1) MR-J4-_A_type series servo amplifier
The initializing time is 2.5 to 3.5 s.
Main circuit control
circuit power supply
Base circuit
Servo-on (SON)
Reset (RES)
Ready (RD)
Alarm (ALM)
(2) MR-J2S-_A_type series servo amplifier
The initializing time is 1 to 2 s.
Main circuit control
circuit power supply
Base circuit
Servo-on (SON)
Reset (RES)
Ready (RD)
Alarm (ALM)
Servo-on (SON) accepted
Servo-on (SON) accepted
(About 1 s)
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