Turning Power On/Off - YASKAWA SGM Series User Manual

5.1 Turning Power ON/OFF

Single phase 200 to 230 VAC or
100 to 115 VAC (50/60 Hz)
1.
Construct a power ON sequence so the power is turned OFF if a servo alarm signal is output. See chapter 5.4.4 "Handling Pro-
IMPORTANT
tective Circuit Operation" for more details on handling the alarm signal output.
2. During the power ON/OFF sequence shown in Figure 5.1, it takes up to approx. two seconds until the normal signal is valid
once power is turned ON assuming that the connect command has been received. The SERVOPACK outputs a servo alarm signal
for u p to two seconds when power is turned ON in order to give time to initialize the SERVOPACK.
3. It takes up to approx. two seconds to turn ON the power supply to the control circuit because the SERVOPACK is initialized.
The servo alarm signal is output (ON) until processing by the CONNECT command has been completed.
4. The SERVOPACK has a capacitor in the power supply. A high charging current will thus flow for 0.2 seconds when the power
is turned ON. Frequently turning the power ON and OFF will cause the main power devices (such as capacitors and fuses) to
deteriorate and can result in unexpected problems.
5. Start and stop the Servomotor by SV_ON/SV_OFF commands rather than turning the power supply ON and OFF.
6. A power loss alarm may occur if the SERVOPACK is turned ON immediately after being turned OFF. To prevent this, always
wait for the time shown in the table below before turning the power ON again.
7. After turning the power OFF, d o not touch the power terminals for at least five minutes because high voltage may remain in
the SERVOPACK.
The figure below shows a typical example of the power ON/OFF sequence.
Power supply OFF
+10%
−15%
24 VDC
* 1. CR50500BA surge suppressor (Okaya Electric Industries Co., Ltd.) or the equivalent
* 2. Flywheel diode (to prevent spikes in 5Ry)
Figure 5.1 Example of Power ON/OFF Sequence
SERVOPACK Model
SGD-
Power Holding Time
Power supply ON
1Ry
SERVOPACK
1Ry
1 − 3
(Servo alarm)
1 − 4
*2
A3AN 01AN
A5AN 02AN
04AN
A3BN A5BN
01BN
02BN
6 s 10 s
5 -3
5.1 Turning Power ON/OFF
*1
08AN 200 VAC input
03BN 100 VAC input
15 s Maximum values
5