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Pitagora 4.0 – UCMP (Unintended Car Movement Protection)


The UCMP (Unintended Car Movement Protection) device is a protection system against uncontrolled movements of the lift cabin. It is mandatory for all systems that comply with the EN81-20 and EN81-1/2 + A3 (Amendment A3) standards.

For traction lifts that do not have open-door maneuvers and that have a certified stopping element (double brake on the motor drive), the simple monitoring of both braking elements is considered sufficient. In the case of geared motors, a braking element that acts on the pulley shaft (slow shaft) must be present.

For pre-A3 EN 81.1/2 lifts, UCMP protection is not mandatory. For Italy, the 10411 code indicates when UCMP solutions must be introduced in the case of modernizations of existing lifts.

UCMP systems are composed of 4 main elements:

Detector: detects the exit of the cabin from the door unlocking area in the absence of commands from the control panel.

Controller: activates the cabin stopping device when the detector is triggered

Stopping device: keeps the cabin still. Not generally supplied by the controller manufacturer.

Monitoring device: verifies the correct functioning of the stopping device.

It is the installer’s responsibility to evaluate the compatibility between the different elements and compliance with regulatory requirements and in particular the cabin stop distance.

The UCMP solutions offered with the Pitagora 4.0 traction controllers depend on the type of positioning system and on the presence / absence of open-door maneuvers (relevelling or advance door opening).

The different solutions are factory-programmed via the parameter D17-Monitor UCM of the Special Functions Menu of the Pitagora 4.0. The list of applicable values is the following:

Monitor UCMDevice / Hydraulic Control UnitUCM SolutionActuator
TypeTime
NoNot presentNo-
11,5 sOverspeed Governor OSG A3 Montanari RQ-AXXXYesSafety Gear
21,5 sController = Brake monitor
Movement with door open available only with Encoder ELGO LIMAX 33CP
YesA3 Certified Brakes
3...17Do not use
181,5 sBrake monitor for Door opening enable (door opens only if brake is fall)No
191,5 sDMG UCM Circuit 4.0 (no brake monitor)
Only for temporarly disabling of Brake switches monitor
No
201,5 sDMG UCM Circuit 4.0 and Brake monitorYesA3 Certified Brakes
211,5 sOverspeed Governor OSG A3 Montanari RQ-AXXX
Controller = Brake monitor
YesSafety Gear
221,5 sOverspeed Governor OSG A3 Montanari RQ-AXXX
Pin deactivation delay equal to the time for automatic return to the floor
YesSafety Gear
231,5 sOverspeed Governor OSG A3 Montanari RQ-AXXX
Pin deactivation delay equal to the time for automatic return to the floor
Controller = Brake monitor
YesSafety Gear
241,5 sOverspeed Governor OSG A3 Montanari RQ-AXXX
Pin activation ED 100%
YesSafety Gear
251,5 sOverspeed Governor OSG A3 Montanari RQ-AXXX
Pin activation ED 100%
Controller = Brake monitor
YesSafety Gear
26...29Do not use
301,5 sHydro Central Unit with Electromechanical valves
(A3 second down valve is optional, no test performed)
Without UCM / ELGO
311,5 sHydro Central Unit with Electromechanical valves
(A3 second down valve is optional, no test performed)
Yes = OSG A3Safety Gear
321,5 sHydro Central Unit with Electromechanical valves
(A3 second down valve is optional, no test performed)
Yes = UCM 4.0Two valves
331,5 sHydro Central Unit with Electromechanical valves
(A3 second down valve is optional, no test performed)
Without UCM / ELGOPawl device
341,5 sHydro Central Unit with Electromechanical valves
(A3 second down valve is optional, no test performed)
351,5 sHydro Central Unit with Electromechanical valves + A3 valve (test)Without UCM / ELGO
361,5 sHydro Central Unit with Electromechanical valves + A3 valve (test)Yes = OSG A3Safety Gear
371,5 sHydro Central Unit with Electromechanical valves + A3 valve (test)Yes = UCM 4.0Two valves
381,5 sHydro Central Unit with Electromechanical valves + A3 valve (test)Without UCM / ELGOPawl device
391,5 sHydro Central Unit with Electromechanical valves + A3 valve (test)
401,5 sGMV model NGV Central UnitWithout UCM / ELGO
411,5 sGMV model NGV Central UnitYes = OSG A3Safety Gear
421,5 sGMV model NGV Central UnitYes = UCM 4.0Two valves
431,5 sGMV model NGV Central Unit
441,5 sGMV model NGV Central Unit
451,5 sGMV model NGV A3 Central Unit (RDY – RUN signals monitor)Without UCM / ELGO
461,5 sGMV model NGV A3 Central Unit (RDY – RUN signals monitor)Yes = OSG A3Safety Gear
471,5 sGMV model NGV A3 Central Unit (RDY – RUN signals monitor)Yes = UCM 4.0Two valves
481,5 sGMV model NGV A3 Central Unit (RDY – RUN signals monitor)
491,5 sGMV model NGV A3 Central Unit (RDY – RUN signals monitor)
501,5 sBucher Electronic unit LRV + NTA-2
(A3 second down valve is optional, no test performed)
Without UCM / ELGO
511,5 sBucher Electronic unit LRV + NTA-2
(A3 second down valve is optional, no test performed)
Yes = OSG A3Safety Gear
521,5 sBucher Electronic unit LRV + NTA-2
(A3 second down valve is optional, no test performed)
Yes = UCM 4.0Two valves
531,5 sBucher Electronic unit LRV + NTA-2
(A3 second down valve is optional, no test performed)
Without UCM / ELGOPawl device
541,5 sBucher Electronic unit LRV + NTA-2
(A3 second down valve is optional, no test performed)
551,5 sBucher Electronic unit LRV + NTA-2 + DSV A3 (test)Without UCM / ELGO
561,5 sBucher Electronic unit LRV + NTA-2 + DSV A3 (test)Yes = OSG A3Safety Gear
571,5 sBucher Electronic unit LRV + NTA-2 + DSV A3 (test)Yes = UCM 4.0Two valves
581,5 sBucher Electronic unit LRV + NTA-2 + DSV A3 (test)Without UCM / ELGOPawl device
591,5 sBucher Electronic unit LRV + NTA-2 + DSV A3 (test)
601,5 sBucher Electronic unit i-Valve / iCON-2 (SMA monitor signal)Without UCM / ELGO
611,5 sBucher Electronic unit i-Valve / iCON-2 (SMA monitor signal)Yes = OSG A3Safety Gear
621,5 sBucher Electronic unit i-Valve / iCON-2 (SMA monitor signal)Yes = UCM 4.0Two valves
631,5 sBucher Electronic unit i-Valve / iCON-2 (SMA monitor signal)
641,5 sBucher Electronic unit i-Valve / iCON-2 (SMA monitor signal)
651,5 sStart Elevator unit 93/E-2DS (no test performed)Without UCM / ELGO
661,5 sStart Elevator unit 93/E-2DS (no test performed)Yes = OSG A3Safety Gear
671,5 sStart Elevator unit 93/E-2DS (no test performed)Yes = UCM 4.0Two valves
681,5 sStart Elevator unit 93/E-2DS (no test performed)
691,5 sStart Elevator unit 93/E-2DS (no test performed)
701,5 sStart Elevator unit 93/E-2DS (test)Without UCM / ELGO
711,5 sStart Elevator unit 93/E-2DS (test)Yes = OSG A3Safety Gear
721,5 sStart Elevator unit 93/E-2DS (test)Yes = UCM 4.0Two valves
731,5 sStart Elevator unit 93/E-2DS (test)
741,5 sStart Elevator unit 93/E-2DS (test)
751,5 sALGI Electronic Unit AZRS 2.0Without UCM / ELGO
761,5 sALGI Electronic Unit AZRS 2.0Yes = OSG A3Safety Gear
771,5 sALGI Electronic Unit AZRS 2.0Yes = UCM 4.0Two valves
781,5 sALGI Electronic Unit AZRS 2.0
791,5 sALGI Electronic Unit AZRS 2.0
801,5 sGMV 3010 2CH (DSV A3 valve is optional, no test performed)Without UCM / ELGO
811,5 sGMV 3010 2CH (DSV A3 valve is optional, no test performed)Yes = OSG A3Safety Gear
821,5 sGMV 3010 2CH (DSV A3 valve is optional, no test performed)Yes = UCM 4.0Two valves
831,5 sGMV 3010 2CH (DSV A3 valve is optional, no test performed)Without UCM / ELGOPawl device
841,5 sGMV 3010 2CH (DSV A3 valve is optional, no test performed)
851,5 sGMV 3010 2CH + DSV A3 (test performed)Without UCM / ELGO
861,5 sGMV 3010 2CH + DSV A3 (test performed)Yes = OSG A3Safety Gear
871,5 sGMV 3010 2CH + DSV A3 (test performed)Yes = UCM 4.0Two valves
881,5 sGMV 3010 2CH + DSV A3 (test performed)Without UCM / ELGOPawl device
891,5 sGMV 3010 2CH + DSV A3 (test performed)

UCMP solutions for traction lifts

1) Brake monitoring (Q40.UCFR)

This basic UCMP solution can only be applied to EN81.20 traction lifts with either gearless or geared drives equipped with double certified brakes. For traction geared machines, the two braking elements must be applied to the pulley shaft (slow shaft).

In case of failure of one of the brakes, the Pitagora 4.0 controller just stops the cabin at the next floor and activates Fault 53.2 (error occurred when the cabin is stopped at floor) or 53.3 (error occurred when the cabin is travelling). All calls are canceled until the correct functioning of brakes is restored. The Error 53 requires a specific reset procedure.

As UCM protection solution, the brake monitoring is applicable only to lifts which does not feature open door maneuvers (relevelling or advance door opening). In these latter cases, other UCMP solutions must be in place.

2) DMG UCMP Solution

The standard UCMP solution by DMG is based on the use of the DMG Encoder system (rope-and-pullley Encoder), the ZP detectors (UCM Detector) in conjunction with the SM2 safety device (UCM Controller) included in the Q40.UCMP package.

The certified SM2 safety module (STEM NC82) is connected to two safety relays connected in series (RUCM1 and RUCM2) which operate the motor contactors. If the system detects an unintended movement of the cabin outside of the door zone, the safety circuit promptly opens the relays which either cut the supply to the brake contactors or activate the external stopping device. Tests and measurements (See Tests #1 and #2 on https://dido.dmg.it/it/knowledge-base/test-p40/ ) indicate that the total reaction time of the circuit is less than 22ms.

In case of UCMP activation or faults in the UCM monitoring devices of traction lifts, Faults 53.100 to 53.240 are activated. The cabin is immediately blocked, and all calls are canceled. The Error 53 requires a specific reset procedure (“Error UCM” in the Playpad “Error” Menu).

The DMG UCMP solution is suitable for all traction lifts. If the traction machine is equipped with double certified brakes, the UCM Stopping Device is simply the machine brake itself. In all other cases (non-certified traction machines), the stopping device must be – for example – the A3 speed limiter.

The following set of parameters must be enabled in the Special Functions Menu of the PlayPad:

ParameterValues
Monitor UCMSee table

3) ELGO Safe UCMP Solution

The advanced UCMP solution offered by DMG is based on the use of the ELGO Limax Safe Absolute Encoder which is a SIL3 safety device and therefore acts as both UCM Detector and UCM Controller (the two safety relays are integrated into the Encoder).

If the system detects an unintended movement of the cabin outside of the door zone, the brake contactors are immediately activated (or the external stopping device is activated via the eSGC output of the Limax encoder) .Tests and measurements (See Tests #10 and #11 on https://dido.dmg.it/it/knowledge-base/test-p40/ ) indicate that the total reaction time of the circuit is less than 45ms.

In case of UCMP activation or faults in the UCM monitoring devices of traction lifts, Faults 53.204 to 53.240 are activated. The cabin is immediately blocked, and all calls are canceled. The Error 53 requires a specific reset procedure (“Error UCM” in the Playpad “Error” Menu). Also, Error 60.24 or 60.254 are activated (ELGO Limax specific faults).

If the traction machine is equipped with double certified brakes, the UCM Stopping Device is simply the machine brake itself. In all other cases (non-certified traction machines), the stopping device must be – for example – the A3 speed limiter, enabled by the specific eSGC output of the Elgo Limax encoder, properly programmed.

The following set of parameters must be enabled in the Special Functions Menu of the PlayPad:

ParameterValues
Monitor UCMSee table

UCMP solutions for hydraulic lifts

1) DMG UCMP Solution

The standard UCMP solution by DMG is based on the use of the DMG Encoder system (rope-and-pullley Encoder), the ZP detectors (UCM Detector) in conjunction with the SM2 safety device (UCM Controller) included in the Q40.UCMP package.

The certified SM2 safety module (STEM NC82) is connected to two safety relays connected in series (RUCM1 and RUCM2) which operate the oil motor contactors. If the system detects an unintended movement of the cabin outside of the door zone, the safety circuit promptly opens the relays which either cut the supply to the valve contactors or activate the external stopping device. Tests and measurements (See Tests #1 and #2 on https://dido.dmg.it/it/knowledge-base/test-p40/ ) indicate that the total reaction time of the circuit is less than 22ms.

In case of UCMP activation or faults in the UCM monitoring devices of hydro lifts, Faults 53.4 to 53.15 are activated. The cabin is immediately blocked, and all calls are canceled. The Error 53 requires a specific reset procedure (“Error UCM” in the Playpad “Error” Menu). The DMG UCMP solution is suitable for all hydraulic lifts. If the oil pump unit is equipped with double certified valves, the UCM Stopping Device is simply the valve itself. In all other cases (non-certified hydro machines), the stopping device must be – for example – the A3 speed limiter.

2) ELGO Safe UCMP Solution

The advanced UCMP solution offered by DMG is based on the use of the ELGO Limax Safe Absolute Encoder which is a SIL3 safety device and therefore acts as both UCM Detector and UCM Controller (the two safety relays are integrated into the Encoder).

If the system detects an unintended movement of the cabin outside of the door zone, the valve contactors are immediately activated (or the external stopping device is activated via the eSGC output of the Limax encoder). Tests and measurements (See Tests #10 and #11 on https://dido.dmg.it/it/knowledge-base/test-p40/ ) indicate that the total reaction time of the circuit is less than 45ms.

In case of UCMP activation or faults in the UCM monitoring devices of hydraulic lifts, Faults 53. 4 to 53.15 are activated. The cabin is immediately blocked, and all calls are canceled. The Error 53 requires a specific reset procedure (“Error UCM” in the Playpad “Error” Menu). Also, Error 60.24 or 60.254 are activated (ELGO Limax specific faults).

If the oil pump unit is equipped with double certified valves, the UCM Stopping Device is simply the machine valve itself. In all other cases (non A3-certified oil uniits), the stopping device must be – for example – the A3 speed limiter, enabled by the specific eSGC output of the Elgo Limax encoder, properly programmed.


Updated on 18 Novembre 2024
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