TVC Ethos Two - Page 68

Page 68 of 102
TVL 351
ISSUE 15
f) Isolate the panel from the main supply, switch the Handwind switch ON, Check A3 OSG solenoid is
energised. (This will allow authorised persons to handwind / release trapped passengers without engaging
the safety gear)
g) Set UMD delay on de-energise contacts so that the OSG solenoid is energised for the minimum amount of
time to emergency stop from high speed without engaging the safety gear.
h) Test UMD time delay is by-passed should the Car gate open when the lift is moving outside of Door Zone.
(Run the lift and disconnect the Car Gate Contact from the CGX terminal).
UCM Stopping - Ethos Two “Bucher DSV-A3 Solenoid lnterface”.
Application of double safety valve as unintended car movement stopping element in the Ethos Two control
system for hydraulic lifts. This systems uses the lock bridging / dual door zone circuit on the Ethos Two control
board to detect UCM. To test this element of the system the DZ signal can be removed whilst the lift is re-
levelling with its doors fully open. Perform the following checks to prove this element:
g) To test perform the UCM detection check
h) Place the Ethos Two in “Special Service” via the car key switch or using the “Activate Service” menu in the
checklist screen, this will hold the doors in the fully open position. (Make sure the car has a suitable barrier
in it to stop passengers using the lift.)
i) Using the “Floor Trim” screen adjust the current floor level by 20 to 30mm.
j) Once the panel is re-levelling, remove the DZ signal from the terminal rail. The control panel should signal
the DSV-A3 valve solenoid, down valve solenoid and pump motor to de-energise immediately. (No timed
delay on de-energise via STR pneumatic timer)
k) The Ethos Two will log a “Not in Door Zone – A3” event which is manually resettable via the solutions menu.
l) This simulates the situation when the car has unintended movement outside the door zone whilst the car
has its doors is open.
m) Repeat with a trim of -20 to -30mm to prove in both up and down travel directions.
Limax Status / Test (only if Limax3CP shaft encoder fitted)
Move the lift on normal with the doors disabled, follow the various test options available for the Limax3CP unit. See
Appendix G for Limax3CP Testing details.