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RL131 MAINTENANCE MANUAL 4.1 Control S ystem Conf iguration DA8MEC-14-020- A0 4.1-5  Warning Functi ons This motor driver has a fun ction to issue warnings bef ore protecti ve functions are activated, which allows the u…

RL131

MAINTENANCE MANUAL

4.1 Control System Configuration

DA8MEC-14-020-A0

4.1-4

4.1.4 Driver

 MEDDT7364N01 (For Z, H axes)

 MCDDT3520N01 (For Y, C and qH axes)

 MBDDT2210N01 (For X, qA, and P axes)

RL131

MAINTENANCE MANUAL

4.1 Control System Configuration

DA8MEC-14-020-A0

4.1-5

 Warning Functions

This motor driver has a function to issue warnings before protective functions are activated, which allows the

user to check for possible abnormal condition such as overload.

When any of the following warnings has occurred, the warning code flashes slowly on the 7-segment LED

on the front panel.

Warning code

No.

Warning Details

16 Overload Load has exceeded 85% of the alarm level.

18 Regenerative overload

Regenerative load has exceeded 85% of the alarm level.

40 Battery

The absolute encoder battery voltage has dropped to approx.

3.2V or below.

88 Locked fan Fan is stopped for more than 1 s.

89 External scale

External scale temperature is 65°C or higher, or signal

strength is insufficient (Adjustment (installation, etc.) is

required.). Available only during full-closed control.

 If the overload or regenerative overload warning is detected, take the remedial action in the same way

as when the respective protective functions have occurred.

 If the battery warning has occurred, replace the battery for the absolute encoder.

After replacing the battery, clear the alarm of the servo driver once to reset the battery warning.

 Protective Functions (Detailed Description of Error Codes)

Function

Error

code No.

Cause Countermeasure

Insufficient

control

voltage

Voltage between P and N of the

control power converter dropped to

below the rated value.

1. Low power supply voltage.

Instantaneous power failure

occurred.

2. Insufficient power capacity:

Voltage dropped due to rush

current at power ON.

3. Faulty servo driver (circuit).

Measure the line voltage between the

control power input terminals [connectors

(L1C, L2C) and terminal blocks (r, t)].

1. Increase the power voltage capacity.

Change the power supply.

2. Increase the power capacity.

3. Replace the servo driver.

Overvoltage 12

Voltage between P and N of the

converter exceeded the rated value.

1. The power voltage exceeded the

allowed input voltage range.

Sudden rise in the voltage by the

phase advance capacitor or UPS

(uninterruptible power supply).

2. Regenerative resistor

disconnected.

3. Regenerative energy cannot be

absorbed due to improper external

regenerative resistor.

4. Faulty servo driver (circuit).

Measure the line voltage of the main power

input terminal [connectors (L1, L2, L3)].

1. Input the voltage properly. Remove the

phase advance capacitor.

2. Measure the resistance of the resistor

externally installed between the terminals

P and B of the servo driver using a

tester. If the value is ¥ (infinite), wire is

broken. Replace the external resistor.

3. Change to the specified regenerative

resistance value and wattage.

4. Replace the servo driver.

RL131

MAINTENANCE MANUAL

4.1 Control System Configuration

DA8MEC-14-020-A0

4.1-6

Function

Error

code No.

Cause Countermeasure

Insufficient

main power

voltage

Voltage between P and N of the main

power converter dropped to below

the rated value when the servo

amplifier was ON.

1. Low power supply voltage.

2. Instantaneous power failure

occurred.

3. Insufficient power capacity:

Voltage dropped due to rush

current at power ON.

4. Open phase: Servo driver with

3-phase input spec. was operated

with single-phase power.

5. Faulty servo driver (circuit).

6. After the maintenance switch was

turned ON and a safety stop was

cleared, it was turned OFF

immediately.

7. After a safety cover was closed to

clear a safety stop, it was opened

immediately.

Measure the line voltage of the main power

input terminal [connector or terminal block

(L1, L2, L3)].

1. Change the power supply. Eliminate the

cause of failed electromagnetic contactor

and turn power back ON.

2. Set each phase of the power supply

correctly.

Contact our service department.

3. Increase the power capacity.

4. Connect each phase (L1, L2, L3) of the

power supply correctly.

Use L1 and L3 for a single phase

100/200V.

5. Replace the servo driver.

6. Turn power OFF once and turn it back

ON.

7. Turn power OFF once and turn it back

ON.

*Overcurrent 14

Current exceeding rated value of the

converter flowed.

1. Faulty servo driver (Defective

parts in the circuit or IGBT)

2. Short-circuit occurred in the motor

wire terminals U, V and W.

3. Ground fault occurred in the motor

wire.

4. The motor burnt out.

5. The motor wire in poor contact.

6. The relay of the dynamic of brake

welded by frequent ON/OFF of the

servo amplifier.

7. Mismatch between the motor and

servo amplifier.

1. Disconnect the motor cable and turn ON

the servo driver. If the same error

reoccurs immediately, replace the servo

amplifier with a new one (or the one that

is running properly).

2. Check the motor wires U, V and W for

short circuit.

Check for any whiskers on the connector

leads.

Make sure the motor wires are connected

properly

3. Check the insulation resistance between

the motor wire terminals U/V/W and the

grounding wire.

In case of an insulation failure, replace

the motor.

4. Check the resistance of the motor

between the lines for proper balance. If

not balanced, replace the motor.

5. Check the connector pins U, V and W at

the motor terminal. If loose or missing,

secure them in place.

6. Replace the servo driver. Do not turn

ON/OFF the servo to start/stop the

amplifier.

7. Check the product number (capacity) of

the motor/servo driver on the

nameplate and change to the motor

applicable to the servo driver.