Shenzhen Hpmont Technology Co., Ltd.
Chapter 7 Elevator Application Guidance
HD3N-L Series User Manual V1.0
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7.4
Power-off Emergency Run Application
During using elevator, if the system power is off, passengers will be shut in car.
HD3N-L provide emergency run mode to resolve this problem.
Connection
Figure 7-4 Emergency run connection
Running Time Sequence
1.
When mains power fails, the KM opens. Elevator controller outputs emergency run (BAT), and controls KM1
to close.
2.
After some time delay, the elevator controller outputs running command (UP/DN).
When HD3N-L receives the command, close the run contactor and open the brake, Acc. at the line rate of
F03.08 (emergency Acc. speed) till the speed of F05.09 (emergency run speed).
3.
When the elevator runs near a leveling area, the elevator controller cuts off the emergency run (BAT),
HD3N-L begins to Dec. at the line rate of F03.09 (emergency Dec. speed) to stop.
4.
HD3N-L close the brake signal after the speed decelerates to zero.
After some time delay, HD3N-L cuts off the run command (UP/DN) and releases the contactor. A complete
emergency running process is finished.
Note
1.
The emergency voltage should >150VDC to ensure normal running.
2.
In emergency running mode, HD3N-L does not detect the Input voltage phase.
HD3N-L
L2
L1
L3
U
V
W
KM
UPS
KM1
DI2
DI3
DI7
UP
DN
M
Elevator
controller
Emergency run (BAT)
Contactor
Three-phase
power supply
7
