故障排除|Trouble Shooting
Hazardous voltages are present in the hoist, crane system, and in connections between components. Before performing any troubleshooting on the equipment, de-energize the supply of electricity to the equipment, and lock and tag the supply device in the de-energized position.
电动葫芦, 起重机的电气连接部件中存在危险电压, 检查排除故障前, 必须先切断设备电源, 并保持电源开关锁定在断开状态.
Only trained and competent personnel should inspect and repair this equipment.
检修人员必须受过相应的训练且其能力足够胜任检修工作.
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able.1 电动葫芦故障排除 Electric hoist troubleshooting guide |
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| Symptom故障现象 | Cause 原因 | Remedy 纠正措施 |
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Hoist and/or trolley moving in wrong direction 葫芦,小车动作方向与操作指令不一致 |
Power supply reversed phased 电源反相 |
Switch two of the three power supply cord wires at the power source. 电源接线处, 三相电源线中到两股反接. |
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Improper electrical connections 电缆接线不正确, 错线 |
Refer to wiring diagram and check all connections 对照电气控制图, 逐一检查接线口 |
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Hoist and/or trolley will not operate 葫芦, 小车无动作 |
Loss of power 没有接电 |
Check circuit breaker, switches, fuses and connections on power lines/cable. 检查电闸, 开关, 保险丝和电线电缆连接 |
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Wrong voltage or frequency 电源电压或频率不对 |
Check voltage and frequency of power supply against the rating on the nameplate of the motor. 对照电机铭牌标示的要求检查电源电压和频率 |
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Hoist overload 起吊物超重 |
Reduce load to within rated capacity of hoist 减少起吊物重量, 以满足额定起重量 |
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Motor overheated and thermal overload protector has tripped 电机温升过热, 过热保护装置启动 |
See troubles shooting problem ‘motor or brake overheating’ 参见故障排除"电机或制动器过热" 项 |
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Improper, loose, or broken wire in hoist electrical system 电控系统接触不良, 松动, 或线断 |
Shut off power supply, check wiring connections on hoist control panel and inside push-button pendant 切断电源, 检查电气控制面板和手电门内部接线 |
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Brake does not release 制动器(刹车环)未松开 |
Check motor brake adjustment for proper clearance. 检查并调整制动器(刹车环), 保留足够间隙 |
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Defect in control transformer 控制信号变压器故障 |
Check transformer coil for signs of overheating. Disconnect transformer and check for open winding. 检查变压器是否有过热烧坏, 断开变压器, 检查绕组输出 |
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Faulty magnetic contactor 电磁继电器失效 |
Check coil for open or short circuit. Check all connections in the control circuit. Check for open contactors. Replace as needed. 检查线圈有无断/短路, 检查所有电路连接及外部连接器. 如若要, 更换部件. |
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Faulty up or down limit switch (手电门)向上/向下开关失效 |
Replace the up and/or down limit switch. 更换向上/向下开关 |
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Motor burned out 电机烧坏 |
Replace motor frame/stator, shaft/rotor, and any other damaged parts. 更换电机定子, 转子, 或其它损坏部件 |
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Hoist lifts but will not lower 葫芦起升正常, 不能下降 |
Down circuit open 向下动作电路断路 |
Check circuit for loose connections. Check down limit switch for malfunction. 检查电路有无松动, 检查行程限位开关(向下)是否失灵触发 |
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Broken conductor in pendant cord 手电门线路导电线断 |
Check the continuity for each conductor in the cable. If one is broken, replace entire cable. 逐一检查电缆导电线接通状态, 如果某根断, 更换整条电缆 |
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Faulty magnetic contactors 电磁继电器失效 |
Check coils for open or short circuit. Check all connections on motor circuit. Check for burned contacts. Replace as needed 检查线圈断/短路, 检查电机连接情况, 检查烧坏的接触件. 如有需要, 更换 |
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Faulty switch in pendant 手电门开关失效 |
Check electrical continuity. Check electrical connections. Replace or repair as needed. 检查电路及电气连通状态. 如有需要, 更换或修理. |
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Hoist lowers but will not lift 葫芦有下降动作无起升动作 |
Hoist overloaded 葫芦超载 |
Reduce load to within rated capacity of hoist. 减少起吊物重量, 使之在额定起重量范围内 |
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Low voltage in hoist’s power supply 葫芦电源电压低 |
Determine cause of low voltage and bring to within plus or minus 10% of the voltage specified on the motor nameplate. The voltage should be measured at the hoist contactor. 确定电压低的原因, 并调整到电机铭牌额定电压正负差10%的范围内, 应测量葫芦电源接线处电压 |
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Up circuit open 起升控制电路断路 |
Check circuit for loose connections. Check up limit switch for malfunction.检查电路联接是否松动, 检查起升行程限位开关是否失效触发 | |
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Faulty magnetic contactors 电磁继电器失效 |
Check coils for open or short circuit. Check all connections on motor circuit. Check for burned contacts. Replace as needed. 检查线圈断路/短路, 检查电机电路接线状态, 检查有无烧坏的电路连接件. 如有需要, 更换 |
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Broken conductor in pendant cord 手电门线路导电线断 |
Check the continuity for each conductor in the cable. If one is broken, replace entire cable. 逐一检查电缆导电线接通状态, 如果某根断, 更换整条电缆 |
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Faulty switch in pendant 手电门开关失效 |
Check electrical continuity. Check electrical connections. Replace or repair as needed. 检查电路及电气连通状态. 如有需要, 更换修理 |
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Hoist will not lift rated load or does not have the proper lifting speed 葫芦无法起吊额定载荷重物, 或起升速度不正常 |
Hoist overloaded 葫芦超载 |
Reduce load to within rated capacity of hoist. 减少起吊物重量, 使之在额定起重量范围内 |
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Low voltage in hoist’s power supply 葫芦电源电压低 |
Determine cause of low voltage and bring to within plus or minus 10% of the voltage specified on the motor nameplate. The voltage should be measured at the hoist contactor. 确定电压低的原因, 并调整到电机铭牌额定电压正负差10%的范围内, 应测量葫芦电源接线处电压 |
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Brake drags 制动器(刹车环)合上, 产生摩擦力 |
check motor brake adjustment for proper clearance 检查并调整电机制动器(刹车环), 保留适当的间隙 |
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Load drifts excessively when hoist is stopped 葫芦制动时, 重物下滑距离超过规定 |
Motor brake not holding 电机制动器没有合紧 |
Clean and inspect brake lining. Check brake adjustment for proper clearance. 检查清洁制动器(刹车环)衬里, 并调整, 保留适当的间隙 |
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Trolley drifts excessively when stopping 小车制动时滑移距离超过规定 |
Motor brake not holding 电机制动器没有合紧 |
Clean and inspect brake lining. Check brake adjustment. Replace if necessary. 清洁制动器(刹车环)衬里, 检查并调整. 如果需要, 更换. |
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Hoist and/or trolley motor or brake overheating 葫芦或小车电机和/或制动器(刹车环)过热 |
Excessive load 起重物过重 |
Reduce load to within rated capacity of hoist 减少起吊物重量, 以满足额定起重量 |
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Excessive duty cycle 吊运操作过于频繁 |
Reduce frequency of lifts and/or trolley movement. 降低起吊和小车运动频次 |
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Wrong voltage or frequency 电源电压和/或频率与额定不符 |
Check voltage and frequency of power supply against the rating on the nameplate on the motor 检查核对电源电压和频率, 是否与电机铭牌上额定相符 |
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Brake drags 制动器(刹车环)合上, 产生摩擦力 |
check motor brake adjustment for proper clearance 检查并调整电机制动器(刹车环), 保留适当的间隙 |
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Extreme external heating 外部环境过热 |
Above a ambient temperature of 40 degree, the frequency of hoist operation must be reduced to avoid overheating of the motor. Special provisions should be made to ventilate the hoist or otherwise shield it from the heat. 当环境温度超过40摄氏度时, 必须降低葫芦使用频率以免电机过热, 需要采取通风降温措施给葫芦降温, 或遮挡热源 |
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Hoist and/or trolley operates intermittently 葫芦和/或小车间歇性动作 |
Contactor contacts arcing 电气联接处有放电电弧 |
Check for burned contacts. Replace as needed 检查有无烧坏联接部件, 如果需要, 更换 |
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Loose connection circuit 电路联接器松动 |
Check all wires and terminals for bad connections. Replace as needed 逐一检查电线或联接终端有无接触不良, 如果需要, 更换 |
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Broken conductor in pendant cord 手电门线路导电线断 |
check for intermittent continuity in each conductor of the pendant cord. Replace entire pendant cord if continuity is not constant. 检查手电门控制线组连通状态, 如有一股不正常. 更换整条控制线 |
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Trolley making load noise 小车运行噪声 |
Trolley wheel maladjusted on beam 小车轮与轨道未调整好(啃轨) |
Readjust the gap between the trolley wheel flange and the beam flange 重新调整小车轮法兰和轨道法兰间隙 |
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Trolley will not move 小车无法移动 |
Trolley wheel spacing on beam too tight 小车轮与轨道咬合太紧 |
Readjust the gap between the trolley wheel flange and the beam flange 重新调整小车轮法兰和轨道法兰间隙 |
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Abnormal noise from wire rope and/or drum 钢丝绳和/或卷筒不正常的噪声 |
Lack of lubrication, worn wire rope/drum/sheaves 缺乏润滑, 钢丝绳/卷筒/滑车轮有磨损 |
Lubricate or replace wire rope/drum/sheaves 加润滑油或更换钢丝绳/卷筒/滑车轮 |