YASKAWA S Series User Manual page 84

5.1 Turning Power ON/OFF
The figure below shows a typical example of the power ON/OFF sequence.
1MCCB ) b) b)
1. Construct a power ON sequence so the power is turned OFF if a servo alarm signal is output. See 5.4.4
I M P O R TA N T
"Handling Protective Circuit Operation" for more details on handling the alarm signal output.
2. During the power ON and 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 re-
ceived.
3. I t takes up to approx. two seconds to initialize settings in the SERVOPACK when the control power is
turned ON. The servo alarm signal will be output (ON) until the communication connection is completed
for the CONNECT command.
4. The SERVOPACK has a capacitor in the power supply. A high charging current will thus flow for 0.6 se-
conds 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. Start and stop
the Servomotor by SV_ON/SV_OFF commands rather than turning the power supply ON and OFF.
5. After turning the power OFF, do not touch the power terminals for at least five minutes because high volt-
age may remain in the SERVOPACK. Residual voltage still remains in the SERVOPACK even after pow-
er is turned OFF. Make sure the charge lamp is unlit first before starting an inspection.
Three-phase 200 to 230 VAC +10 %,
50/60 Hz
S'1),
FIL
(For servo alarm display)
5Ry 1 P L
Mai n circuit Main circuit power
power supply supply ON
OFF 1
- - C L i _ O — . r _ O - - - • — r m
1MC 5Ry 1 S U P
Figure 5.1 E x a m p l e of Power ON/OFF Sequence
5 -3
-15
SERVOPACK
SGDB-DDAN
F G e °
1 MC
II- 0 R
s
IF
T
ALM
ALM S G
__0
Q FG
M C
1MCCB Circuit breaker (for the inverter)
FIL: N o i s e filter
1MG: C o n t a c t o r
5Ry: R e l a y
1PL: P a t r o l lighter
1SUP: S u r g e suppressor CR505008A (Okaya Electric Industries Co., Ltd.)
1D: F l y w h e e l diode (To prevent spikes in 5Ry)
5.1 Turning Power ON/OFF
UO
V 0
w o
PG
1CN
3 5RY
71
24 VDC
T —
1D
4