Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Analog Voltage and Pulse Train Reference User Manual

Page 356

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10.1 Alarm Displays

10-9

10

Trou

blesh

ooting

A.300:
Regeneration Error

• Regenerative resistor capacity

(Pn600) is set to a value other

than 0 for a SGDV-R70, -R90,

-1R6, -2R1, or -2R8 SERVO-

PACK, and an external regen-

erative resistor is not

connected.

• An external regenerative resis-

tor is not connected to the

SGDV-470, SGDV-550,

SGDV-590, SGDV-780,

SGDV-210, SGDV-260,

SGDV-280, or SGDV-370

SERVOPACK.

Check the external regenerative

resistor connection and the value of

the Pn600.

Connect the external regenerative

resistor, or set Pn600 to 0 if no

regenerative resistor is required.

The jumper between the power

supply terminals B2 and B3 is

removed for the SERVOPACKs

other than the SERVOPACKs

shown above.

Confirm that a jumper is mounted

between the power supply terminals

B2 and B3.

Correctly mount a jumper.

The external regenerative resis-

tor is incorrectly wired, or is

removed or disconnected.

Check the external regenerative

resistor connection.

Correctly connect the external

regenerative resistor.

A SERVOPACK fault occurred.

While the main circuit power sup-

ply is OFF, turn the control power

supply OFF and then ON again. If

the alarm still occurs, the SERVO-

PACK may be faulty. Replace the

SERVOPACK.

A.320:
Regenerative Over-

load

The power supply voltage

exceeds the specified limit.

Measure the power supply voltage. Set the power supply voltage within

the specified range.

Insufficient external regenerative
resistance, regenerative resistor

capacity, or SERVOPACK capac-
ity.
Or, regenerative power has been

continuously flowing back.

Check the operating condition or

the capacity using the capacity

selection Software SigmaJunma-

Size+, etc.

Change the regenerative resistance,

regenerative resistor capacity, or

SERVOPACK capacity. Reconsider

the operating conditions using the

capacity selection software Sigma-

JunmaSize+, etc.

Regenerative power continu-

ously flowed back because nega-

tive load was continuously

applied.

Check the load applied to the servo-

motor during operation.

Reconsider the system including

servo, machine, and operating con-

ditions.

The setting of parameter Pn600 is

smaller than the external regener-

ative resistor's capacity.

Check the external regenerative

resistor connection and the value of

the Pn600.

Set the Pn600 to a correct value.

The external regenerative resis-

tance is too high.

Check the regenerative resistance.

Change the regenerative resistance

to a correct value or use an external

regenerative resistor of appropriate

capacity.

A SERVOPACK fault occurred.

The SERVOPACK may be faulty.

Replace the SERVOPACK.

(cont’d)

Alarm Number:

Alarm Name

(Alarm Description)

Cause

Investigative Actions

Corrective Actions

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