DCBL Driver

1	Does not rotate under no-load condition
2	Does not rotate when load is applied
3	Generates abnormal heat
4	Noisy
5	Heavy vibration
6	Does not work as configured
7	Can't communicate
8	Does not recognize analog input
9	Frequent DC overvoltage
10	Do not operate at the set torque
11	Does not hold (Without brake )
12	Does not hold (With brake )
13	Brake does not release

DCBL Hypoid Motor

14	Does not rotate under no-load condition
15	Does not rotate when load is applied
16	Generates abnormal heat
17	Noisy
18	Heavy vibration
19	Grease leaks

DCBL Hypoid Motor with brake

20	Brake does not work
21	Motor does not turn Motor is abnormally hot Thermal relay operates Braking noise is loud
22	Generates abnormal heat

DCBL Driver

1	Does not rotate under no-load condition

Cause 1	Power outage	Solution	Check power supply ・Contact power company
Cause 2	Disconnection of connecting wire	Solution	Check circuit
Cause 3	Poor switch contact	Solution	Repair or replace
Cause 4	Parameter incorrect setting	Solution	Check set values
Cause 5	Protected status	Solution	Check status

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2	Does not rotate when load is applied

Cause 1	Voltage drop	Solution	Power Supply 、Check length of wiring
Cause 2	Overload operation	Solution	Reduce the load
Cause 3	Parameter incorrect setting	Solution	Check set values
Cause 4	Noise	Solution	Check ground wire

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3	Generates abnormal heat

Cause 1	Overload operation	Solution	Reduce the load
Cause 2	Start-up and stopping frequencies are too high	Solution	Reduce the frequencies
Cause 3	Parameter incorrect setting	Solution	Confirm setting values
Cause 4	Voltage is either too high or too low	Solution	Check the voltage

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4	Noisy

Cause 1	Power failure	Solution	Check power supply
Cause 2	Parameter incorrect setting	Solution	Check set values

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5	Heavy vibration

Cause 1	Power failure	Solution	Check power supply
Cause 2	Parameter incorrect setting	Solution	Check set values

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6	Does not work as configured

Cause 1	Incorrect wiring of input signal	Solution	Check wiring
Cause 2	Parameter incorrect setting	Solution	Check set values
Cause 3	Noise	Solution	Check ground wire 、Connect noise filter

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7	Can't communicate

Cause 1	Incorrect setting of slave address	Solution	Check SW1
Cause 2	Incorrect setting of communications speed	Solution	Check SW2
Cause 3	Affected by noise	Solution	Check ground wire
Cause 4	Communication setting is not correct	Solution	Check set values
Cause 5	Attempting to set a value outside the setting range	Solution	Check settings
Cause 6	Poor connection	Solution	Check wiring

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8	Does not recognize analog input

Cause 1	Incorrect wiring	Solution	Check wiring
Cause 2	Disconnection	Solution	Check wiring
Cause 3	Parameter incorrect setting	Solution	Check set values

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9	Frequent DC overvoltage

Cause 1	Overload operation	Solution	Add regenerative resistor
Cause 2	Damaged regenerative resistor	Solution	Confirm resistance value
Cause 3	Poor connection of regenerative resistor	Solution	Check wiring

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10	Do not operate at the set torque

Cause 1	Power failure	Solution	Check power supply
Cause 2	Parameter incorrect setting	Solution	Check set values
Cause 3	Overload operation	Solution	Reduce the load
Cause 4	Damaged driver	Solution	Replace driver

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11	Does not hold (Without brake )

Cause 1	Power failure	Solution	Check power supply
Cause 2	Overload	Solution	Reduce the load
Cause 3	Parameter incorrect setting	Solution	Check set values
Cause 4	Incorrect wiring	Solution	Check wiring
Cause 5	Motor disconnection	Solution	Check wiring

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12	Does not hold (With brake )

Cause 1	Power failure	Solution	Check power supply
Cause 2	Overload	Solution	Reduce the load
Cause 3	Parameter incorrect setting	Solution	Check set values
Cause 4	Incorrect wiring	Solution	Check wiring

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13	Brake does not release

Cause 1	Power failure	Solution	Check power supply
Cause 2	Parameter incorrect setting	Solution	Check set values
Cause 3	Incorrect wiring	Solution	Check wiring

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DCBL Hypoid Motor

14	Does not rotate under no-load condition

Cause 1	Power outage	Solution	Check power supply ・Contact power company
Cause 2	Disconnection of connecting wire	Solution	Check circuit
Cause 3	Poor switch contact	Solution	Repair or replace
Cause 4	Disconnection of stator coil wiring	Solution	Repair at a designated facility
Cause 5	Three-phase is single-phase	Solution	Check terminal voltage
Cause 6	Gear/shaft/bearing damage	Solution	Repair at a designated facility

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15	Does not rotate when load is applied

Cause 1	Voltage drop	Solution	Check length of wiring
Cause 2	Gear wear	Solution	Repair at a designated facility
Cause 3	Overload operation	Solution	Reduce the load

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16	Generates abnormal heat

Cause 1	Overload operation	Solution	Reduce the load
Cause 2	Operation with too frequent overload start/stop	Solution	Reduce the frequencies
Cause 3	Bearing damage	Solution	Repair or replace
Cause 4	Voltage is either too high or too low	Solution	Check the voltage

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17	Noisy

Cause 1	Continuous noise -Bearing damage ・Gear wear	Solution	Repair at a designated facility
Cause 2	intermittent noise -Scratched gear or foreign matter caught	Solution	Repair at a designated facility

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18	Heavy vibration

Cause 1	Gear/bearing wear	Solution	Repair at a designated facility
Cause 2	Poor installation or loose bolts	Solution	Retighten

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19	Grease leaks

Cause 1	Loose fastenings	Solution	Retighten
Cause 2	Oil seal damage	Solution	Repair at a designated facility

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DCBL Hypoid Motor with brake

20	Brake does not work

Cause 1	Wrong connections	Solution	Check the connections
Cause 2	Switch problems	Solution	Replacement ・Repair

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21	Motor does not turn Motor is abnormally hot Thermal relay operates Braking noise is loud

Cause 1	Wrong brake connections	Solution	Check the connections
Cause 2	Brake gap is too large	Solution	Adjust the gap
Cause 3	DC module troubles	Solution	Replacement ・Repair
Cause 4	Brake coil disconnection or short circuit	Solution	Repair at a designated facility
Cause 5	Contact problems with the switch	Solution	Replacement ・Repair

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22	Generates abnormal heat

Cause 1	Braking frequency is too high	Solution	Reduce the frequencies
Cause 2	Load torque or load inertia is too large	Solution	Reduce the load

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