INSTRUCTIONS: QUASAR SV Code: DYN 64.1.06
Date: 08/11/2016 Revision: 06
5
Once the governor and, therefore, the safety gear have been interlocked, when unjamming the safety gears, the
return spring will return to its initial resting position and, therefore, the overspeed contact will reset on its own.
4.5 UCM UNCONTROLLED MOVEMENT DEVICE
4.5.2
UCM WARNINGS.
The anti-creep system requires the lift controller to be able to manage the functions that the anti-creep system uses,
such as the coil power, control sensor monitoring and manual rescue. If the controller is unable to manage these
functions, Dynatech offers the possibility of installing an electronic module, D-Box. For more information, see the
website.
If the D-Box is not used, please observe the following warnings and follow the recommendations below for proper
controller design.
Note. It is highly recommended that the controller designer contacts Dynatech before designing the circuit to manage
the anti-creep system, to clarify any doubts regarding connections and to be recommended a specific solution for
their installation
Locking the overspeed governor
after UCM can be done by either of the following 2 methods: 1)
Detecting the UCM or 2) Letting the anti-creep system act.
1) To detect the UCM, either a sensor needs to be placed on each floor or, as is the case with the D-Box, a
levelling signal needs to be used. Therefore, if the car creeps with the doors open, the sensor detects it
and cuts off the current to the anti-creep system coil, thus locking the overspeed governor.
2) In this case, the anti-creep system clamping device is locked at each floor in the installation. When the lift
moves, the anti-creep system coil is excited and releases the overspeed governor. Then, once the car
reaches one of the floors, the current to the coil is cut, leaving the anti-creep system in the locked position.
The D-Box has a feature whereby, when the elevator reaches a floor, current continues through the coil
for a set time, usually 10 minutes, if the lift does not receive another call. After this time, the anti-creep
system locking device is activated. This correction is due to the VDI 4707 Part 1 (German lift energy
efficiency standard) which establishes a period of 5 minutes before stand-by.
Thus, the anti-creep system performs fewer on-off cycles, thereby increasing its useful life.
This is helpful in periods when there is heavy traffic, as it prevents the anti-creep system from repeatedly
locking and unlocking the overspeed governor.
It must be remembered that a UCM sensor will need to be installed if the anti-creep system works this
way.
Note: This manual displays partial information on the instructions for use and maintenance of this product. Please refer to the customer
area in Dynatech’s website in order to consult the full manual; http://customers.dynatech-elevation.com/
Summary of Contents for QUASAR-SV
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