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RH5 8.4 AC Servomotor Drivers SERVICE MANUAL 8.4−4 DA3SEC−85−480−A0 Digital Operator Indication for T roubleshooting Digital Operator Indication for Troubleshooting Digital Operator Indication (=NOTE=1) (T raceback Monit…

8.4 AC Servomotor Drivers

SERVICE MANUAL

RH5

8.4−3

DA3SEC−85−480−A0

Error Display Confirmation with Digital Operator

Error Display with Digital Operator and Traceback Data

Digital Operator

(Traceback Data)

Detection

Absolute encoder data error (Only when absolute encoder

is used.)

Parameter breakdown

Parameter setting error

Overcurrent (or heatsink overheat)

Overvoltage

Overspeed (Detected at 110% of max. speed)

Overload (Momentary overload)

Overload (Continuous overload)

Encoder error (Only when absolute encoder is used.)

Encoder backup alarm *1

Encoder check sum error *1

Encoder battery error *1

Encoder absolute error *1

Encoder overspeed *1

Reference input read error

Overrun (Motor or encoder miswiring)

Phase detection error (Only when incremental encoder is

used.)

PA−, PB−phase disconnection of PG signal line

PC−phase disconnection of PG signal line

Momentary power loss alarm (Detected when power is

turned ON again during power holding time.)

Not applicable to alarm

Alarm reset Power ON (Only for traceback data)

Digital operator transmission error 1 *2

digital operator transmission error 2 *2

*1 Only when 12−bit absolute encoder is used.

*2 The following indications are digital operator errors. Not detected as traceback data.

=CHECK=

Use the digital operator attached to the Z−axis driver when checking X and Y axes.

RH5

8.4 AC Servomotor Drivers

SERVICE MANUAL

8.4−4

DA3SEC−85−480−A0

Digital Operator Indication for Troubleshooting

Digital Operator

Indication (=NOTE=1)

(Traceback Monitor)

Lighting Condition Probable Causes Countermeasures

Lights up when power is

supplied to the control

circuit.

Defective control circuit

board (1PWB)

Replace the

SERVOPACK.

Overcurrent

Lights up when power is

supplied to the main

circuit and servo power

is turned ON.

Defective current

feedback circuit

Defective main circuit

transistor module

Replace the

SERVOPACK.

Remains ON during

operation.

Lights up even after

turning power OFF and

then turning back ON.

Operation can be

resumed after a certain

period of time by

pressing <RESET> key.

Ambient temperature

near the SERVOPACK is

over 55qC.

Adjust the ambient

temperature of the

SERVOPACK for 55qC

or lower. (Heatsink

overheat)

Overvoltage

Lights up when the

motor accelerates or

decelerates.

Load CD

is too large.

x Check the inertia of the

machine with the value

converted to the motor

shaft.

x Connect the

regenerative unit.

Defective control circuit

board

Replace the

SERVOPACK.

Overspeed

When the reference is

input, the motor runs fast

and LED comes ON.

x Motor connection error

x Optical encoder

connection error

x Correct the motor

connection.

x Check pulses in phases

A, B and C on 2CN and

correct wiring.

(Instantaneous

overload)

Lights up during

operation.

Turning OFF power to

the control circuit and

then turning back ON

starts operation.

Operation is continued

for several seconds to

several tens of seconds

at a torque exceeding

the rating.

Check for overload and

adjust as necessary.

(Continuous overload)

Lights up during

operation.

Turning OFF power to

the control circuit and

then turning back ON

starts operation.

Operation is continued

for several tens of

seconds to several

hundreds of seconds at

a torque exceeding the

rating.

Check for overload and

adjust as necessary.

8.4 AC Servomotor Drivers

SERVICE MANUAL

RH5

8.4−5

DA3SEC−85−480−A0

Digital Operator Indication for Troubleshooting

Digital Operator

Indication (=NOTE=1)

(Traceback Monitor)

Lighting Condition Probable Causes Countermeasures

Encoder

error

Lights up during

operation.

Erroneous wiring or

incomplete contact of the

absolute encoder.

Check and correct signal

cables of phases A, B

and C of 2CN.

nco

er error

Malfunction of the

SERVOPACK pulse

counter.

x Turn OFF the SEN

signal, reset the alarm

and then turn the SEN

signal back ON.

x Take noise−control

measures.

Encoder backup error

Lights up after SEN

signal is input.

Absolute encoder battery

voltage dropped.

Set up the absolute

encoder.

Encoder checksum

error

Lights up after SEN

signal is input.

Absolute encoder

memory data check error

Set up the absolute

encoder.

Encoder battery

alarm

Lights up after SEN

signal is input.

Absolute encoder battery

voltage dropped.

Replace the battery and

enter the SEN signal

twice.

Encoder absolute

error

Lights up after SEN

signal is input.

Malfunction of the

absolute encoder.

Turn OFF the SEN

signal, reset the alarm

and then turn the SEN

signal back ON.

=HINT=

Display format is as indicated.

Digital Operator

Indication (=NOTE=1)

(Traceback Monitor)

Lighting Condition Probable Causes Countermeasures

Encoder overspeed

Lights up after SEN

signal is input.

The motor was turning

when the SEN signal

was input.

Enter the SEN signal

when the motor has

stopped.

Reference

read

error

Lights up during

operation.

Erroneous operation with

the reference input

reader

Press <RESET> key and

resume operation.

Reference

read

error

Failure of the reference

input reader

Replace the

SERVOPACK.