| Brake pick is loud |
Brake gap is excessive |
Check gap, adjust as needed. See brake adjustment section of the manual. |
| Noise absorber is out of adjustment or worn out |
See brake adjustment section of the manual for proper adjustment. |
| Brake drop is loud |
Brake gap is excessive |
Check gap, adjust as needed. See brake adjustment section of the manual. |
| Normal brake is not holding 125% load |
Normal brake gap is not set properly |
Check gap, adjust as needed. See brake adjustment section of the manual. |
| Counterweight balance is not correct for the system |
Check that the counterweight is balanced at the proper percentage. |
| Car net travel distance is too long, not enough rope compensation |
Rope compensation is recommended for car travel of 110 ft or more. |
| Normal brake torque is not high enough |
Check gap, adjust as needed. See brake adjustment section of the manual. |
| Normal brake lining is worn |
Check brake lining wear. See lining check/replacement section of manual. |
| Brake is scrubbing one side only |
Brake gap is incorrectly set |
Check, adjust brake gap. See manual. Check clearance between pad/surface. |
| Ensure brake is properly floating on pins & both sides clear the braking surface. |
| Machine is equipped with a TDI emergency sheave brake and the car is not stopping in the correct distance for unintended movement |
Sheave brake gap is incorrectly set |
Check and adjust as needed. See manual for proper adjustment. |
| Sheave brake torque setting is incorrect |
Check and adjust as needed. See manual for proper adjustment. |
| Sheave brake pad is not properly aligned with the braking surface |
Check and adjust as needed. See manual for proper adjustment. |
| Counterweight balance is not correct for the system |
Check and adjust counterweight percentage. |
| Brake won’t pick |
Voltage and/or current from controller is not adequate or correct |
Check Pick and Hold volts. See manual for proper settings. Confirm DC voltage is supplied to brake. |
| Coil is open or shorted |
Check coil with Ohm meter. See manual to verify correct reading. Replace brake coil if reading is bad. |
| Controller indicates a brake switch fault |
Switch needs to be adjusted |
Check and adjust as needed. See manual for proper adjustment. |
| Switch is bad |
Replace switch and adjust the switch. See manual for proper adjustment. |
| Gearbox is leaking oil |
Oil level is over full |
Drain oil to the center of the sight glass. |
| Oil seal is worn |
Contact Torin Drive for the correct seal and procedures for replacement. |
| Gearbox is noisy |
Oil level is too low |
With the proper oil, fill to center of the gearbox sight glass. |
| Oil is dirty |
Change oil and check backlash. See the manual for proper adjustment. |
| Backlash is out of tolerance |
Check and adjust as needed. |
| Noticeable noise coming from the bearing |
Oil is dirty |
Change oil and check backlash. See the manual for proper adjustment. |
| Grease level is low in the bearing |
Grease bearing and follow maintenance schedule. |
| Bearing is worn |
Replace bearing and grease bearing. |
| Grinding noise coming from the motor |
Bearing has been worn or damaged |
Check and replace bearing. |
| High pitched noise coming from the motor |
Noise is likely being electrically induced by the drive |
Verify correct motor parameters were entered in the drive. Use application data table provided by Torin for each job. |
| Check drive parameters are set for an induction motor. Refer to drive manual. |
| Perform autotune/autolearn procedure. Refer to drive manual or manufacturer. |
| Ensure encoder cable is separate from motor leads to reduce noise interference. |
| Check/adjust the proportional and/or integral speed gain settings of the drive. |
| Consult controller or drive manufacturer for assistance w/advanced drive adjustments. |
| Motion related fault occurs when changing direction |
Backlash may be out of tolerance |
Check and adjust the backlash. See manual for proper adjustment. |
| Motor is overheating or operating at a noticeably higher temperature than normal |
Duty cycle on the machine is too high due to passenger traffic |
Decrease the top speed. |
| Use thermistor as motor protection signal to controller (R1,R2 connections in motor box). |
| Bearing is worn causing higher amperage |
Change the bearing. |
| Wrong voltage is being applied to the machine |
Check voltage against the machine data tag to be sure the voltage is correct. |
| Encoder related fault is occurring intermittently |
There is possible noise being induced onto the encoder wiring causing intermittent faults |
Ensure the encoder cable is separated from motor leads at the machine and controller to reduce noise interference. |
| Eliminate/isolate excess encoder cable. Don’t coil excess cable inside controller. Coiling can cause noise interference. |
| If a noise problem is suspected & the cable cannot be shortened, store excess cable in a separate enclosure outside the controller. |
| There is a poor ground connection |
Inspect/retighten ground connections at the machine and the controller. |
| The encoder cable is bad |
Inspect encoder cable for signs of being crushed, snagged, cut, or damaged from severe bending. |
| There is a bad encoder connection |
Inspect the encoder cable connector for debris, contaminants, or corrosion. |
| Verify all pins on the d-sub connector are straight and clean. Visually inspect all other encoder wiring connections. |
| For individual wire connections, check for loose connection or insulation clamping. |
| Verify that each individual wire is properly connected to its terminal and is clamped on the bare wire strands and not the insulation. |
| For any wiring that was cut/stripped, check each wire for signs of too few strands due to improper wire stripping. |
| There is an incorrect drive adjustment or setup |
Check the drive to ensure the parameters are correct. |
| Perform autotune or autolearn procedure. Refer to the drive manual or manufacturer. |
| Encoder fault is consistently occurring and preventing the elevator from running |
The encoder is bad |
Change the encoder. |
| The encoder cable is bad |
Inspect the encoder cable for any signs of being crushed, snagged, cut, or damaged from severe bending. |
| If cable is damaged, order the correct cable. DO NOT CUT THE CABLE. |
| There is severe noise interference causing consistent faults |
Ensure encoder cable is separated from motor leads to reduce noise interference. |
| Eliminate/isolate excess encoder cable. Don’t coil excess cable inside controller. Coiling can cause noise interference. |
| If a noise problem is suspected & the cable cannot be shortened, store excess cable in a separate enclosure outside the controller. |
| Poor ground connection |
Tighten all ground connections at the machine and at the controller. |
| Bad encoder connection |
Inspect encoder cable connector for debris, contaminants, or corrosion. |
| Verify all pins on the d-sub connector are straight and clean. Inspect all other encoder wiring connections. |
| If there are any individual wire connections made, check for loose connection or insulation clamping. |
| Verify each individual wire is properly connected to its terminal & clamped on the bare wire strands, not insulation. |
| For any wiring that was cut/stripped, check each wire for signs of too few strands due to improper wire stripping. |
| Incorrect drive adjustment or setup |
Check the drive to ensure the parameters are correct. |
| Perform an encoder alignment. |
| Perform autotune/autolearn procedure. Refer to drive manual/manufacturer. |
| No encoder communication to the drive or the encoder communication is faulty due to noise or wiring problem |
Perform encoder communication test at the drive to verify communication with the drive. Feature may not be available on all drives. Consult drive manual/manufacturer. |
| Encoder phasing miswire |
If individually wired, check A, A\, B, and B\ phases for possible miswiring. |