Kinco FD5 AC series servo driver user manual
Chatper 8 Alarm investigation
108
The DC bus voltage exceeds the
overvoltage alarm point
Step 1: Check whether the power supply voltage is
within the driver input voltage range and whether the
power supply voltage is stable.
Step 2: high-speed braking occasions feedback energy
is too high, you can reduce the deceleration speed or
connect the appropriate brake resistance.
The power voltage input is lower
than the low voltage protection
alarm value.
Step 1: Check whether the power supply voltage is
within the driver input voltage range and whether the
power supply voltage is stable.
Step 2: Power on the power supply and then the logic
power supply, and ensure that the drive is connected to
the power supply before enabling the power supply.
Step 3: Reduce the acceleration to reduce the actual
maximum power consumption.
Instantaneous current exceeds the
overcurrent protection value.
Step 1: Check whether the mechanical load is stuck
and reset the fault. If the fault cannot be reset, go to the
next step.
Step 2: Remove the connection between the drive and
the motor, shield the 400.2 alarm, after enabling the
overcurrent alarm, the drive is bad, and the drive can
be replaced.
Step 3: Check whether there is a short circuit between
the UVW and PE of the power line, replace the power
line or compare the motor.
External brake resistance is
overloaded
Step 1: Check whether the external brake
resistance value and brake resistance power are set
correctly on the panel or host computer.
Step 2: The brake resistor power is insufficient,
replace the brake resistor with a higher power.
Internal brake resistance
overtemperature
The power of the brake resistance inside the driver
is insufficient. Please disconnect the short cable
between DC+/RB1 and RB-end, and connect the
appropriate external brake resistance between
DC+/RB1 and RB-end.
Internal brake unit damaged, brake
circuit short circuit
After the driver is powered off, use a multimeter
to measure the DC- and RB-ends. If the driver
works properly, replace the driver.
The actual following error exceeds the
set maximum following error value.
The possible reasons are:
1. The motor cable is improperly
connected
2. The control ring is too rigid
3. The maximum following error is set
too small
4. Target speed exceeds maximum
speed limit
5. The target torque limit is too small
6. The drive and motor cannot meet
the requirements of the application
Step 1: Make sure the power cable UVW is connected
correctly
Step 2: Readjust the gain and increase the rigidity.
Refer to Chapter 7 for the rigidity adjustment method
Step 3: Readjust the maximum follow error
(0x606500)
Step 4: Readjust the maximum speed limit (0x607f00)
Step 5: Re-adjust the target torque %(0x607100) and
the target current limit (0x607300), the target current
limit cannot exceed the maximum motor current
Step 6: Reduce the load or replace the motor with more
power
The logic voltage is lower than the
lower alarm limit
Step 1: Check whether the logical voltage is within the
driver input voltage range and whether the power
supply voltage is stable
Step 2: The logic circuit uses a separate power supply
The motor or drive is overloaded for a
long time, the possible reasons are:
1. Motor power line and encoder
wiring error
Step 1: Check that cables are correctly connected
Step 2: Measure whether the lock voltage is correct
and determine the lock release when the driver is
enabled
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