9.2 CONTROLLER ERROR MESSAGE TABLE
MCU Error
Message
NOP
No
power
ECD
No Encoder
Signal
FLT
Fault
OVC
Over Current
OVT
Over
Temperature
OVV
Over Voltage
BLS
Bottom Sensor
Error
TLS
Top Sensor
Error
Meaning
motor
Verify that the 'Emergency Power Shutoff Switch' button
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on the SCU is released.
Verify that circuit breaker inside the MSCU is switched
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off caused by an error
Check the main power source in the building.
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Check the encoder line connections to the actuators and
servo controllers
Motor controller module may have a fatal damage if this
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happens repeatedly.
Replace the controller module, if necessary.
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This error occurs when excessive current flows through
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the controller and motor.
following reasons:
a. the actuators are overloaded because of excessive
movement.
b. The actuator has a mechanical problem causing
excessive friction and/or abnormal vibration.
c. too much grease is put in.
Replace the controller module or actuator as deemed
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necessary.
This error appears when the temperature of the power
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module on the controller is too high.
Replace the controller module, if necessary.
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This error appears when output voltage from the
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Rectifier on the controller exceeds the standard voltage.
Check the input voltage value.
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Replace the controller module, if necessary.
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The actuator is extending or retracting beyond it's
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normal range of motion and is tripping the
Sensors on the upper and bottom stroke limits of each
actuator.
Verify that the sensors are functioning properly.
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Page 71
Remedy
It can occur due to the
Limit
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