Troubleshooting   Linear Actuators

Zip Chain Actuator

※Most troubles with the ZCA are due to lubrication, selection, and installation problems.
  If any problem arises, follow this troubleshooting guide and take the appropriate measures.

1 Damage to the drive section
2 Input shaft breakage
3 Bearing damage
4 Chain failure and abnormal wear
5 Abnormal noises from chains
6 Abnormal temperature of drive section surface (over 60°C )

Troubleshooting for motors

7 Motor does not rotate when loaded (chains do not move)
8 The chains' direction of travel is backward
9 Motor is abnormally hot
10 Loud noises
11 Heavy vibration
12 Grease leaks
13 Brake does not work
14 Brake does not work well
It takes a long time to brake
15 Motor does not rotate (chains do not move)
Motor is abnormally hot
Thermal relay does not work
Braking noise is loud
 Answers
1 Damage to the drive section
Cause 1 Overload Action Either reduce the load or switch to a ZCA with a proper capacity.
Cause 2 Improper support Action Fix the ZCA to a stable frame and then accurately center it.
Cause 3 Shock Action Install a damper unit to absorb the impact being added.
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2 Input shaft breakage
Cause 1 Improper centering Action Shafts will easily break when using a cylindrical coupling and the like. Use Echt-Flex Couplings, then adjust to the required concentricity.
Cause 2 Excessive overhung load Action Adjust the load to fall within catalog values.
Cause 3 Overloads and impact load Action Either reduce the load or switch to a ZCA with a proper capacity.
Cause 4 Excessive input Action Add a safety device to prevent impact load.
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3 Bearing damage
Cause 1 Overload Action Either reduce the load or switch to a ZCA with a proper capacity.
Cause 2 Excessive overhung load Action Adjust the load to fall within catalog values.
Cause 3 Improper centering of the coupling Action Shafts will easily break when using a cylindrical coupling and the like. Use Echt-Flex Couplings, then adjust to the required concentricity.
Cause 4 Axial adjustment of the coupling Action Adjust the position and length of the coupling so that the input shaft will not receive axial load.
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4 Chain failure and abnormal wear
Cause 1 Overload Action Either reduce the load or switch to a ZCA with a proper capacity.
Cause 2 Poor adjustment and installation Action Either reduce the load or switch to a ZCA with a proper capacity.
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5 Abnormal noises from chains
Cause 1 Side load Action Install a guide to prevent side load.
Cause 2 Insufficient lubrication Action 取扱説明書の5.保守・点検の項を参照し、点検および必要な潤滑を行なってください。
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6 Abnormal temperature of drive section surface (over 60°C )
Cause 1 Overload Action Either reduce the load or switch to a ZCA with a proper capacity.
Cause 2 Insufficient lubrication Action 取扱説明書の5.保守・点検の項を参照し、点検および必要な潤滑を行なってください。
Cause 3 Improper centering Action Shafts will easily break when using a cylindrical coupling and the like. Use Echt-Flex Couplings, then adjust to the required concentricity.
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7 Motor does not rotate when loaded (chains do not move)
Cause 1 Voltage drop Action Check the wiring length
Cause 2 Gear wear Action Repair at a designated facility
Cause 3 Overload operation Action Reduce the load
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8 The chains' direction of travel is backward
Cause 1 Wrong connections Action Check the connections
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9 Motor is abnormally hot
Cause 1 Overload operation Action Reduce the load
Cause 2 Start-up and stopping frequencies are too high Action Reduce the frequencies
Cause 3 Bearing damage Action Repair and replace
Cause 4 Voltage is either too high or too low Action Check the voltage
Cause 5 Braking frequency is too high Action Reduce the braking frequency
Cause 6 Load torque or load inertia is too large Action Reduce the load
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10 Loud noises
Cause 1 Continuous noises -- bearing damage and gear wear Action Repair at a designated facility
Cause 2 Intermittent noises -- gear scratching or contamination Action Repair at a designated facility
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11 Heavy vibration
Cause 1 Gear/bearing wear Action Repair at a designated facility
Cause 2 Poor installation or loose bolts Action Retighten
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12 Grease leaks
Cause 1 Loose fastenings Action Retighten
Cause 2 Oil seal damage Action Replacement
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13 Brake does not work
Cause 1 Wrong connections Action Check the connections
Cause 2 Switch problems Action Repair and replace
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14 Brake does not work well
It takes a long time to brake
Cause 1 Oil, wear debris and the like are adhering to the lining Action Take apart and clean
Cause 2 Lining service life Action Repair and replace
Cause 3 Load inertia is too large Action Reduce the load inertia
Cause 4 AC internal wiring Action Switch to DC external wiring
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15 Motor does not rotate (chains do not move)
Motor is abnormally hot
Thermal relay does not work
Braking noise is loud
Cause 1 Wrong brake connections Action Check the connections
Cause 2 Brake gap is too large Action Adjust the gap
Cause 3 DC module troubles Action Repair and replace
Cause 4 Brake coil disconnection or short circuit Action Repair at a designated facility
Cause 5 Contact problems with the switch Action Repair and replace
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