Maintenance Manual - 第78页
AV131 MAINTENANCE MANUAL 4.1 Cont rol Sy ste m Confi guration D79MEC- 14-020-A0 4.1- 7 Func ti on Error code N o. Cause Co untermeasu re Ins uffic ien t m a i n power v o l tage 13 Instant aneous stop bet ween L1-L3 last…
AV131
MAINTENANCE MANUAL
4.1 Control System Configuration
D79MEC-14-020-A0
4.1-6
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 amplifier once to reset the battery warning.
Protective Functions (Detailed Description of Error Codes)
Function
Error
code No.
Cause Countermeasure
Insufficient
control
voltage
11
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 amplifier (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 amplifier.
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 amplifier (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 amplifier using a
tester. If the value is ∞ (infinite), wire is
broken. Replace the external resistor.
3. Change to the specified regenerative
4. Replace the servo amplifier.
AV131
MAINTENANCE MANUAL
4.1 Control System Configuration
D79MEC-14-020-A0
4.1-7
Function
Error
code No.
Cause Countermeasure
Insufficient
main power
voltage
13
Instantaneous stop between L1-L3
lasted longer than the time set by the
SV.Pr6D (main power off detection
time) when the SV.Pr65 (LV when
main power off) was set at 1. Or
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 amplifier with
3-phase input spec. was operated
with single-phase power.
5. Faulty servo amplifier (circuit).
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. Increase the setting time of SV.Pr6D
(Main power OFF detection time).
Set each phase of the power supply
correctly.
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 amplifier.
* Overcurrent 14
Current exceeding rated value of the
converter flowed.
1. Faulty servo amplifier (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 servomotor. 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 amplifier. Do not turn
ON/OFF the servo to start/stop the
amplifier.
7. Check the product number (capacity) of
the motor/servo amplifier on the
nameplate and change to the motor
applicable to the servo amplifier.
AV131
MAINTENANCE MANUAL
4.1 Control System Configuration
D79MEC-14-020-A0
4.1-8
Function
Error
code No.
Cause Countermeasure
* Overheat 15
Temperature of the radiator or power
elements in the servo amplifier
exceeded the rated values.
1. Ambient temperature of servo
amplifier is over the rated value.
2. Overloaded
1. Check the ambient temperature of the
servo amplifier and remedy the cooling
conditions.
2. Increase the servo amplifier/motor
capacity.
Increase the acceleration/deceleration
time.
Reduce load.
Overload 16
If the torque command value
exceeds the overload level set by
SV.Pr72 (overload level setting),
overload will result based on the time
limit characteristics to be described
later.
1. The unit was activated for a long
time with heavy load and the
effective torque exceeded the
rated torque.
2. Oscillation or hunting occurred due
to improper adjustment of gain.
3. Improper or broken motor wiring
4. Collided with the mechanical unit
or the mechanical unit was
sluggish suddenly. The mechanical
unit became complicated.
5. Motor is driven with the
electromagnetic brake.
6. Motor cable misconnected to
another axis when multiple units
are connected.
7. The value of SV.Pr.72 is too small.
Check the torque (current) waveform for
oscillation or large vertical swing on the
graphic display of the PANATERM®.
Check the warning message for overload
and load factor with the PANATERM®.
1. Increase the servo amplifier/motor
capacity. Increase the capacity of the
Increase the acceleration/ deceleration
time or reduce the load.
2. Readjust the gain.
3. Connect the wiring of the motor
according to the wiring diagrams.
Replace the cable.
For CN X2, connect the cables in the
order of black (W), white (V) and red (U)
from the bottom.
4. Correct the distortion of machine.
Reduce load.
5. Measure the voltage at the
electromagnetic brake terminal.
Release the electromagnetic brake.
6. Perform wiring properly so that the motor
cable and encoder cable may be
connected one-one-one to the amplifier.
7. Reset the SV.Pr72 value (reset to the
default setting).