YASKAWA SGDV-OFB03A Product Manual page 101

Sigma-5 and Sigma-7 Series SERVOPACKs
Alarm Number: Alarm
Name (Alarm Description)
A.830: Encoder Battery
Alarm
A.840: Encoder Data Alarm
A.850: Encoder Overspeed
A.860: Encoder Overheated
A.890: Encoder Scale Error
A:891: Encoder Module
Error
A.C80: Encoder Clear Error
or Multiturn Limit Setting
Error
A.C90: Encoder Communi-
cations Error
| | Feedback Option Module Type 3 - Manual version C - Revision 0 | en |
Cause
A SERVOPACK fault
occurred.
The battery voltage was
lower than the specified
level after the control power
supply was turned ON.
A linear scale fault occurred
Malfunction of linear scale
because of noise interfer-
ence, etc.
Note: If the scale file is configured for Hall sensor connectivity, a Hall sensor must be con-
nected. Disabling Hall sensor connectivity (Pn080.0 = 1) and trying to work without the
sensor will cause error A.840.
The linear scale was oper-
ating at high speed when
the power was turned ON.
The internal temperature of
linear servomotor is too
high.
A linear scale fault occurred. -
A linear scale fault occurred. Turn the power supply OFF
A linear scale fault occurred. Turn the power supply OFF
A SERVOPACK fault
occurred.
Contact fault of cable con-
nector for linear scale or
incorrect wiring.
Disconnection or short-cir-
cuit of the cable for linear
scale. Or, incorrect cable
impedance.
Errors in Semi-closed Loop Control with Linear Motors
Investigative Actions
-
Measure the battery voltage. Replace the battery.
Turn the power supply OFF
and then ON again.
-
Check the motor speed
(Un000) to confirm the
motor speed when the
power is turned ON.
Measure the ambient oper-
ating temperature around
the linear servomotor.
and then ON again.
and then ON again.
Turn the power supply OFF
and then ON again.
Check the status of cable
connector contact for linear
scale.
Check the linear scale con-
nection cables.
Error Lists
Corrective Actions
The SERVOPACK may be
faulty. Replace the SERVO-
PACK.
If the alarm still occurs, the
linear scale may be faulty.
Replace the servomotor.
Correct the wiring around
the linear scale by sepa-
rating the cable for linear
scale from the main circuit
cable or by checking the
grounding and other wiring.
Reduce the motor speed to
a value below the speed
specified by the linear scale
manufacturer, and turn ON
the control power supply.
The ambient operating tem-
perature of the linear servo-
motor must be 40 °C or less.
The linear scale may be
faulty. Replace the linear
scale.
If the alarm still occurs, the
linear servomotor may be
faulty. Replace the linear
servomotor.
If the alarm still occurs, the
linear servomotor may be
faulty. Replace the linear
servomotor.
If the alarm still occurs, the
SERVOPACK may be faulty.
Replace the SERVOPACK.
Re-insert the cable connec-
tors for linear scale and con-
firm that the linear scale is
correctly wired.
Use the linear scale connec-
tion cables with the speci-
fied rating.
101