Dynatech QUASAR 사용 설명서 지침 - 페이지 10

{카테고리_이름} Dynatech QUASAR에 대한 사용 설명서 지침을 온라인으로 검색하거나 PDF를 다운로드하세요. Dynatech QUASAR 14 페이지. Overspeed governor

페이지 인쇄

INSTRUCTIONS: QUASAR Cod: DYN 48.1.07

Fecha: 04/12/2017 Revisión: 07

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.

It is recommended to over-excite the coil with a voltage slightly above nominal for less than one second

to ensure the anti-creep system unlocks. Once it is unlocked and the lift begins to move, the supply

voltage should be reduced during the journey to lessen the coil heating.

Also, if the choice of keeping the coil excited while the lift is at a floor is taken, the voltage to the solenoid

can also be lowered. This saves energy and improves the energy efficiency of the lift.

Below is a table of recommended voltages.

190

* This is the voltage at the rectifier output, which can vary between the values shown.

To ensure proper operation of the device, it is advisable to design a circuit such that, if the inductive

sensor does not detect the anti-creep system unlocking, the controller will try more than once to supply

current to the coil (the Dynatech D-Box makes 7 attempts before the error message appears that no

reading for the control sensor is detected).

Thus, if there is any mechanical fault preventing the sensor from being read, the same attempts to solve

the problem will be made before an error message appears on the controller.

To prevent the car from stopping due to the loss of the control sensor signal while travelling, it makes a

reading only at the floors.

In the event of a cut in the electricity supply to the electric magnet coil when the car is moving, the

speed governor will lock and the safety gear subsequently engaged.

The installation of an autonomous power system is recommended to avoid undesired engagement in the

event of a cut in the mains electricity supply.

Open the pin to enable the speed governor to turn for automatic rescue. If the pin is not released, the

governor will lock and the safety gear will engage during the rescue movement.

Use in installations with re-levelling over 20 mm: in installations with re-levelling over 20 mm, certified

switching must be used to activate the electric magnet during the re-levelling process because if it re-

levels by more than 20 mm then the governor could lock and the safety gear engage. In this case, the

switching must discriminate between re-levelling and an uncontrolled movement.

Use in installations with door pre-opening: in installations with door pre-opening, certified switching

must be used to ensure the electric magnet remains activated during the pre-opening process because if

the electric magnet does not remain activated then the governor could lock and the safety gear engage.

In this case, the switching must discriminate between pre-opening and an uncontrolled movement.

ANTI-CREEP SYSTEM MAINTENANCE

It is very important that the anti-creep system is in the best possible condition. As it is a mechanism that will perform

many cycles over its lifetime, it is advisable to check its condition and operation during lift maintenance.

The anti-creep system should be kept as free of dust and dirt as possible, to ensure the moving parts are not

obstructed. It should be checked and cleaned of dirt if necessary. After cleaning, a lubricant should be applied to

increase the mechanism life.

The parking system has a translation movement. This movement should be as smooth as possible. For this purpose,

the nylon screw (1) rests on the solenoid edge.

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/

Over-excitation

Voltage during travel

215-205*

Voltage at floor

150

104