D877 MGB Rev01 HE250.docx
25/50
3.3
Test device against uncontrolled movement (DSP=uc, up )
It describes a procedure to verify the conformity of the device in accordance with section 6.3.13 of the EN81-
20 regulation.
Before proceeding, verify, however, the manual of the electrical panel, the operations necessary for the tests.
Usually it predisposes the implant so as to exclude the possibility of calls and open the electric chain safeties
at the level of the floor doors (for the system doors must be open even if physically closed). So the cab has to
move up out of the door zone and stop responding for intervention of the safety circuit
Setting on the electronic board SCH001 the switch RSW = 4 (DSP = UC) and pressing the S1 button until UP
appears on the display, it predisposes the valve group to perform the next cycle of ascent or descent with
nominal speed, even during the respective releveling maneuvers.
3.3.1
Ascent with empty car, and positioned in the upper part of the compartment
Open, manually, the emergency lowering valve, pulling down the cabin until the intervention of re-leveling
uphill. When the re-leveling intervenes, the system will start uphill at nominal speed and the switch intended
to detect the movement uncontrolled must act by stopping the cab. Check that the stop position of the cab
complies with the requirements in section 5.6.7.5 of EN 81-20.
3.3.2
Descent with a full load in the cabin, and the cabin located at the bottom of the compartment
Using the hand pump, moving uphill the plant, until the start of the downhill re-leveling.
The re-leveling intervenes when, the plant will start descending at nominal speed and the switch purpose of
identifying the uncontrolled movement must act by stopping the cabin.
The device must operate the stop element, i.e., interrupt signals to the valve group during the descent, before
the cab moves away from 200 mm from the floor.
In particular, to activate the stop element, the device must disconnect, on SCH001 card, the inputs of the ENR
solenoid valves and ERS
on the M2 terminal board, and in any case are to exclude the input signals to the card, the CN6-7 connectors.
Check that the stop position of the cab complies with the requirements in section 5.6.7.5 of EN 81-20.
At the end of each maneuver, performed during the test, the card no longer provide the RDY signal, if not
setting a new test, by pressing the S1 button again, or a normal operation changing the switch RSW = 0.
At the end of the test, restore normal system operation.
Note: As an alternative to the use of RSW switch, you can activate the test condition by setting the parameter
P711 to the value 1. At the end of the test the value of the parameter returns automatically to 0. For the
verification of the monitoring function of the protective equipment refer to steps 3.5 or 3.8, depending on the
type of self-control expected in the electrical panel.
3.4
Self-control of type of functional redundancy
An automatic test is expected to check the seal of the hydraulic valves that participate in the cab block, at least
once in 24 hours, and surely it happens if it is run when the car is automatically sent to the bottom floor.
The sequence involves the activation of the solenoid ENR for a time of 5-10 s and, after a pause time between
5 and 10 s, the solenoid activation ERS for 5-10 s.
If, during the self-test detects an abnormal lowering of the cabin it must be taken out of service.
And advisable, in case of re-leveling, repeat again once the test before putting the system out. The control
panel, or the specific devices must have the possibility to easily perform the proof test and verification of the
monitoring system.
Involved signals:
