3 - 23
3. SIGNALS AND WIRING
3.7.3 Power-on sequence
(1) Power-on procedure
1) Always wire the power supply as shown in above Section 3.7.1 using the magnetic contactor with
the main circuit power supply (three-phase 200V: L
1
, L
2
, L
3
, single-phase 230V: L
1
, L
2
). 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
11
, L
21
simultaneously with the main circuit power
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 (SON) about 1 second after the main circuit power
supply is switched on. Therefore, when SON is switched on simultaneously with the three-phase
power supply, the base circuit will switch on in about 1 second, and the ready (RD) will switch on in
further about 20ms, making the servo amplifier ready to operate. (Refer to paragraph (2) in this
section.)
4) When the reset (RES) is switched on, the base circuit is shut off and the servo motor shaft coasts.
(2) Timing chart
20ms
20ms
20ms
10ms
10ms
10ms
10ms
10ms
60ms
60ms
SON accepted
(1s)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Power supply
Base circuit
Servo-on
(SON)
Reset
(RES)
Ready
(RD)
Main circuit
control circuit
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Содержание MELSERVO MR-J2 C Series
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