【 Weak current College 】 OTIS Otis Elevator failure highlights 100 cases (1)---Power By 【 China power house network 】

Fault 1

3100 user complaints elevator stop cannot run, the external call does not work, floor displays properly, do not open the door by TT check TCB fault logging 0100, 0105, OVF20 fault logging CHKDBDSIG, questioning SW1, 2 relays, found SW1 relay auxiliary contacts bad, replacement properly.

Fault 2 T60 elevator user complaints in leveling locations repeatedly switch, you need to close the door several times before you can run most of the time correctly. Check MIB Board and inverter fault logging. Observation in the room waiting for failure to appear. Found in fault appears, U, D to disconnect immediately after the pick-up, multimeter check U, D relay A1 Terminal voltage, found at fault when no voltage, combining fault no failure registration, suspected fault should be in the safety inspection, each check car door, door contact normal Office yet check out the point of failure, and observation, found after absorbing LB relay U, D relay is broken, check the drawings, LB relay on U, D relay basically had no impact. After the hands resist LB relay to control by the people, found fault does not occur. Suspected LB relay contact failure, will control cabinet in main relay contact checked and found that the SDP relay 13-14-contact contact resistance 50-200 ohm, contact cleaner after failure frequency significantly reduce, replace it after troubleshooting.

Fault 3 T2000VF user complaints lift off, arrives on the people, to the room open repair lift, TT check MC fault logging 2703, DB failure record DCURRENTFDBK, check UDX relay contact contact correctly, check the control cabinet motor output pile head discovery W phase pile head burned, replace the pile head back to normal.

Fault 4 T2000VF user complaints elevator a shake shake a terrorist. Using the MC TT check failure record 2703, DB failure record INVERTEROCT, check UDX relay contact normal, control cabinet wiring pile head normal motor, motor coil resistance in normal, temporarily unable to isolate the fault, then consider if brake under normal circumstances you cannot let go of, PVT not properly can also cause trouble, check brake properly, PVT check found plug welding line has a loose, welding fine after repairing malfunctions.

Fault 5 300VF user complaints elevator stops stopped, ran a layer to stop 5 or 6 times. To engine room found fault hosts a great running noise, like the sound of the mechanical grinding Sassafras, La-electrical sliding car check host machine running properly, the judgment is electrical failure. Using the MC TT check failure record 2703, DB failure record DCURRENTFDBK, INVERTEROCT, replacing normal after PVT

Failure to run 6 T60 user complaints a hold on, off. Arrival found and didn't run on people, lift a hold, check MIB failure registration OUS, SDP, check the speed sensor, found the CD has a lot of butter, cleaned properly.

Failed 7 3100 user complaints elevator door stops in 1/f, no response to the outbound-TT check status to normal M111, check the close button signal no input screens do not consider, on the door switch normal overhaul in elevator restored elevator is always stopped at the 1st floor and open the door, and there is always a M111 callsbased exists would call in and outbound for business as usual, suspected LCBII Board call switch problem, or down toggle no call signal input, dismantle switch back to normal after the elevator, holding multimeter checking switch has a Deputy Minister-contacts.

Fault 8 T40 elevator, a maintenance worker has during the on-site repair faults, but check out problem, arrives in the engine room open repair lift does not move, check the light properly, check the hall door line number behind a 110V 2XQ36, no electricity, no check is SDP relay, check the SDP relay suction line package no electricity, questioning BPR\AZX relay contact, find AZX relay 1-9 close regular contact is blocked, the replacement of the elevator after returning to normal.

Fault 9 (the fault because for a long time, failure record is not clear) T2000VF lift up a hold, normal, check the downlink DBR resistance found a resistance after blowing, replace the normal.

Fault 10 T-40 downlink speed to ping layer has more sense whiff of investigation reported gate arm in the middle of the pegs out replacement top silk fault elimination. This fault is extremely dangerous, we host maintenance 17CT must note brake pin

Fault 11 3100 elevator frequent EFO, onsite TT view status after observation, normal, and occasionally appear, check the fire EFO input correctly, check the normal, check user RS18 fire module occasionally after normal removal action.

Failure to lift up 12 CHVF 2 layer emergency stop, brake not loose, a lift and to return to the base station, so repeatedly, according to brake brownouts, so

Barrier a 13 T-40 1m/s, 10-10 station 40 beds, occur when you start running up? running? speed changing this protection to arrive several times, 3/f, and run to the door, 2/f, not arrive 3rd floor without opening the door to 1 upstairs. After checking the discovery is a small relay AZX contact wires soldered.

Fault 14 T-3100 elevator, running sometimes appear lost layer, i.e., automatically to the bottom to find location. LCB11 fault logging for 0100, 0201, 0211, OVF20 no fault logging. The cause of the malfunction, LCB11 plate chip, replacement properly.

Fault 15 T-3100 elevator, user response lift sometimes stopped in a layer does not open the door. LCB11 fault is the cause of the malfunction, 0205, as motor thermal protection. Because the room temperature is not very high, see brake are normal. Adjusted after normal OVF20 parameter.
R > fault 16 T-3100 elevator, Elevator user reaction sometimes stops at a floor door fixed ladder, which appear as 1F, and received after normal 1LS accompanying cables. Fault 17 (this failure by-screwdriver friends) T-3100 elevator, user response lift sometimes have lost. LCB11 fault logged as: 0100, 0201, 0231 OVF210 fault logged as: SHUTDOWN, 1LSINIDEC, 1LV LVMISSED and then, after the normal 2LV.

Fault 18 T-3 passenger elevator, that elevator off people to check maintenance run startup sometimes does not start properly, the motor does not go, check line, U, D, relay contact bad restored in maintenance run sometimes still doesn't start, brake cannot open, questioning G contactor contacts bad, fix multimeter test properly, make troubleshooting is still not good, direct contacts of the jumper of contactor G after normal. Replace G contactor troubleshooting. Previously repaired some contactor failure has met with multimeter test properly, but the actual use of contacts still have trouble, if you are unfamiliar with the circuit knowledge will make detours, so will this fault made recommendations we check the contactor contacts more attention.

Fault 19 Xizi Otis Elevator: configured to STAR LCB-II, Yaskawa inverter. Trouble phenomenon: the elevator runs an hour will be protected in the engine room observed as long as the brake first actions after action LCB-II DZ relay will protect. enquiries DZ relays and accompanying cables properly, after the time delay relay replacement door area, lift up and running.

Fault, no 20T60 elevator use, elevator door kept switching, someone uses does not work. Investigation, in the case of safety edge didn't adjust, in doors in place when touching the touch pad switch induced. resize after fault elimination. In addition if you have a dual-touch panels also note the location of the gate within the cam is normal.

Fault 21
E411 elevator, TT display; DB: adopt an interpretation failure, MC: brake switch failure. Clean and adjust brake, replace the brake switch, several weeks after the failure occurred. Replace the H1, H2, still unresolved after 5M. Over the next six months, the elevators power Cabinet in all parts of the brake and connecting all and other elevator swap or adjustment.　　But still not resolved. Finally in a cleaning and maintenance in traction machines have a bolt slightly loose, tighten it a quarter circle disappears after the failure. Is connected the two brake arm bolts needed to climb up from top to bottom, inside one of the two nuts on the side, slightly loosen the bolts run-off caused.
Fault 22 Theo FO the freight elevator, configure CB-II: Star-Delta start: 3/3 failure phenomenon: the elevator to the second floor will lose its position, but to the third floor is normal. LCB-II no fault logging after the observation in the engine room-: none found. After the host Department observation: find brake hug elevator will self location. also found brake in action, LCB-II on led is not lit-DZ adjust brake action time, lift up and running.

Fault 23 Xizi Otis Elevator: configured to STAR LCB-II, Yaskawa inverter. Elevator speed car, downlink instruction is always up, and then lift the inverter. According to the cause of the failure of the inverter for: PG (encoder) plate loose lead!

Fault 24 2000VF2 parallel ladder, 11 points at midday to 2 points, down-normal, normal, long range DOCSIS short-term exchange rate when the emergency stop button the same fault .2 Taiwan. other periods of all normal in excluding a trouble-free lift itself, found in this time period 3-phase voltage reaches 420V. the rated voltage of the inverter to 400V. elevator after normal.

Fault 25 T-3100 elevator occasional stop ladder, internal and external call and display properly.　　Elevator status pending ladder is fixed ladder. No fault logging. Reason: no input UIB, DIB, C1 relay contacts 13/14.

Failure to run 26 T-3100 elevator to the top level of a layer or normal, the other is not. The lift to the station is not open to find the location. Fault logging to LCB2: 0100, 0201, reasons for UIS 0211: problematic