YASKAWA Sigma-V Series User Manual page 364

10 Troubleshooting
10.1.2 Troubleshooting of Alarms
Alarm Number:
Alarm Name
(Alarm Description)
A.041:
Encoder Output Pulse
Setting Error
A.042:
Parameter
Combination Error
A.044:
Semi-closed/Fully-
closed Loop Control
Parameter Setting
Error
A.050:
Combination Error
(The SERVOPACK and
servomotor capacities do
not correspond.)
A.051:
Unsupported Device
Alarm
A.0b0:
Cancelled Servo ON
Command Alarm
∗1. Detection conditions
If one of the following conditions detected, an alarm occurs.
10-8
Cause
The encoder output pulse (Pn212)
is out of the setting range and
does not satisfy the setting condi-
tions.
The speed of program JOG oper-
ation (Fn004) is lower than the
setting range after having
changed the electronic gear ratio
(Pn20E/Pn210) or the servomo-
tor.
The speed of program JOG oper-
ation (Fn004) is lower than the
setting range after having
changed the setting of the pro-
gram JOG movement speed
(Pn533).
The moving speed of advanced
autotuning is lower than the set-
ting range after having changed
the electronic gear ratio (Pn20E/
Pn210) or the servomotor.
The setting of the fully-closed
module does not match with that
of Pn002.3.
The SERVOPACK and servomo-
tor capacities do not match each
other.
An encoder fault occurred.
A fault occurred in the SERVO-
PACK or converter.
An unsupported serial converter
unit, encoder, or external encoder
is connected to the SERVO-
PACK.
After executing the utility func-
tion to turn ON the power to the
motor, the servo ON signal (/S-
ON) was sent from the host con-
troller.
Encoder resolution
-1
Pn533 [min ] ×
•
6 × 10
-1
] ×
Max Motor Speed [min
•
Investigative Actions
Check the parameter Pn212.
Check if the detection conditions
are satisfied.
Check if the detection conditions
are satisfied.
Check if the detection conditions
are satisfied.
Check the settings of Pn002.3.
Check the capacities to see if they
satisfy the following condition:
1 Servomotor capacity
≤
4 SERVOPACK capacity
Replace the servomotor and see if
the alarm occurs again.
−
Check the product specifications,
and select the correct model.
−
Pn20E
≤
5 Pn210
Encoder resolution
Pn20E
≥
12 Pn210
About 3.66 × 10
Corrective Actions
Set Pn212 to a correct value.
*1
Decrease the setting of the elec-
tronic gear ratio (Pn20E/Pn210).
*1
Increase the setting of the program
JOG movement speed (Pn533).
*1
Decrease the setting of the elec-
tronic gear ratio (Pn20E/Pn210).
The setting of fully-closed module
must be compatible with the setting
of Pn002.3.
Select the proper combination of
SERVOPACK and servomotor
≤ 4
capacities.
Replace the servomotor (encoder).
The SERVOPACK or converter
may be faulty. Replace the SERVO-
PACK or converter.
Select the correct combination of
units.
Turn the SERVOPACK power sup-
ply OFF and then ON again or exe-
cute a software reset.
(cont'd)