Installation
3
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INSTALLATION MANUAL
3.3.
Reset conditions
The board looses knowledge of the car position under the following conditions:
•
Loss of power.
•
After inspection control (when the car has been moved).
•
When reset button on the board is activated.
•
After board programming sequence or timers adjustment.
•
When CRS/CRD (or CRSB/CRDB) slowing down commands are activated due to car out-of-step condition.
•
After faults where reset to the lowest floor is needed.
The reset sequence will always bring the car to lowest floor; different conditions are possible:
•
Car already at the lowest floor (UM/DM led on and CRD or CRDB reset contact open): the reset happens
without moving the car.
•
Car slightly higher than the lowest floor (CRD or CRDB reset contact open): the car moves down at low
speed, and stops when it encounters both magnetic strips at the lowest floor level.
•
Car in higher position in the shaft (CRD or CRDB reset contact closed): the car moves down at high speed, and
stops when it trips the lower CRD reset contact; it restarts down at low speed, and stops when it encounters
both magnetic strips at the lowest floor level.
IMPORTANT
There is the possibility of “uninterrupted reset” sequence (i.e.without stop and restart); simply modify
parameter t0
(see heading 4.4 “MP2 board programming”) to the car speed (m/s) and replacing the
existing DM slowdown magnetic strip at lowest floor with a new one 30 cm long. If needed adjust
the P6 parameter to delay its activation.
•
Car slightly lower than lowest floor level (UM led on and CRD or CRDB reset contact open):
▪
Hydraulic: the car relevels in the up direction.
▪
Rope lift: the car moves up direction at low speed and stops when it encounters both the magnetic
strips.
IMPORTANT
If the main floor is not the lowest floor, the reset described above will conclude with the car returning
to the main floor.
ELETTROQUADRI
SINCE 1983
MP3
