LiteOn EVO 8000 Series, Руководство пользователя

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121
Keypad
Display
Fault Name Cause Possible Solution
ov
Overvoltage
Voltage in the DC bus
exceeded the overvoltage
detection level
1.200 V class: 410 V
2.400 V class: 820 V
1. Drive input power has
surge voltage entering
2. Machinery output short
circuit
3. Ground fault in the
output circuit causes the DC
bus capacitor to overcharge
4. Electrical signal
interference causes drive
malfunction
5. PG cable is disconnected
6. Incorrect PG cable wiring
7. PG encoder wiring is
interference by electrical
signal
1. Install a DC link choke
Voltage surge can result from a
thyristor convertor and phase
advancing capacitor using the same
input power supply
2. Check the motor power cable,
relay terminals and motor terminal
box
3. Correct grounding shorts and
reapply power
4. Check the solutions for
interference suppression
»Check the control circuit lines,
main circuit lines and grounding
wiring.
»If the MC is the source of
interference, connect a suppressor
to it.
5. Reconnect the cable
6. Correct the wiring
7. Separate the wiring from the
source of the electrical signal
interference. It is usually the output
lines from the drive
Uv
Undervoltage
1.Voltage in the DC bus
fell below the
undervoltage detection
level (P2-03)
2.200 V class: 190 V
3.400 V class: 380 V
( 350 V when d1-01
＜
400 )
1. Input power phase loss
2. Loose wiring terminals of
drive input power
3. Problem with the voltage
from the drive input power
4. The drive main circuit
capacitors are weakened.
5. The contactor or relay on
the soft-charge bypass
circuit is damaged
1. Correct the drive input power
wiring
2. Tighten the terminals
3. Check the voltage
a. Adjust the voltage according to
the drive input power specifications
b. Check the main circuit magnetic
contactor if there is no problem
with the power supply
4&5. Turn on and turn off the
power to see if any problem occurs
Replace either the entire drive or
the control board if the problem
continues to occur. Contact the
local distributor for more
information.
Ut1 Undertorque Detection 1 1. Incorrect parameter 1. Reset P6-01 and P6-02