9 Description of Functions and Schemes
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9.4 Full-Load/Overload Function
1 Function description
Overload:
■
The buzzer tweets.
■
The door cannot close, even if you press the door close button.
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The CCB displays overload indication, "OL" or "OVERLOAD".
■
The full-load indication or "FL" is displayed at the hall.
Full-load:
■
The full-load indication or "FL" is displayed at the hall.
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Elevator car calls operate normally.
■
The elevator supports registration of hall calls but not respond to them.
digital. The following part separately describes the parameter setting of the two types.
2 Wiring
Wiring and parameter setting of analog full-load/overload switches
Type Wiring Diagram
Parameter
Setting
Connected
to CTB
Terminals P24 and M are connected to positive and negative of
the power cable, and terminal Ai are connected to the signal
cable of the analog load cell.
CN6
Ai
M
P24
Analog load cell
MCTC-CTB-A
F5-36 = 2
(CTB analog
input)
Connected
to MCB
Terminal 24 V of the system is connected to power cable
positive of the analog load cell, and terminal M of CN9 on the
MCB is connected to power cable negative of the analog load
cell. Terminal Ai of CN9 on the MCB is connected to the signal
cable of the analog load cell.
CN9
Ai
M
Analog load cell
MCTC-MCB
24
V
F5-36 = 3
(CTB analog
input)
When the analog load cell is used, load cell auto-tuning must be performed;
otherwise, the analog load cell cannot be used. Perform analog load cell auto-tuning