User Interface
4-58 Manual # 42-02-2P24
Adjusting Thresholds
Typical values for load thresholds are shown below. Thresholds are user-adjustable.
To adjust thresholds
1. Enter SYSTEM mode (F3 up, all others down).
2. Press N until LOAD WEIGHER THRESHOLDS appears on the LCD.
3. Press S to display the load threshold you wish to set.
4. The value shown is the current threshold value is expressed as a percentage of the full
load value (see the explanations above). Press + or - to adjust a value. If a value is set to
0%, that load weigher function is disabled.
5. Press S to select the next threshold to adjust or press N to exit.
6. Place the F3 switch in the down position to exit SYSTEM mode when finished.
If an analog load weigher is used, the Analog Load Weigher Learn Function must be performed
before the load weigher system will perform properly.
Analog Load Weigher Learn Function
With the isolated platform load weigher from MCE, the system simply learns the reference val-
ues of the empty and fully loaded car weight at any floor. With the crosshead deflection load
weigher from K-Tech or the rope stress load weigher from EMCO (using the 0 - 10V analog out-
put), the system must learn the values at each floor because the load varies with car position
due to the changing proportion of traveling cable hanging beneath the car and the position of
the compensation cables.
The Analog Load Weigher Learn Function is performed as follows:
1. Move the empty car to the floor where the test weights are located. It is best to have one
person in the machine room and another person at the floor to load the weights.
2. Place the car on Independent Service operation.
3. Place the F3 switch in the up position and press N to select the Analog Load Weigher
Learn Function (scrolling message is displayed)
• ANALOG LOAD WEIGHER LEARN FUNCTION. PRESS S TO START
4. Press S to start. The computer responds with one of two scrolling messages:
• CAR NOT READY TO LEARN, MUST BE ON INDEPENDENT SERVICE
5. Verify that the car has been placed on Independent Service.
• READY TO LEARN EMPTY CAR VALUES? PRESS S TO START
6. If the empty car values have already been learned and you want to learn full car values,
press N and go to step 9. To begin learning empty car values, press S. The computer dis-
plays the message:
• LEARNING EMPTY CAR VALUES. PRESS N TO ABORT
7. If the Extra Features Menu Option “Analog Load Weigher?” is set to K-TECH or EMCO,
the car will move to the bottom floor, record the empty car value and then move up,
stopping at each floor to record the empty car value. When the top floor has been
reached, the car will move back to the floor at which the Analog Load Weigher Learn
Function was begun and the computer will display the scrolling message:
• EMPTY CAR LEARN PROCESS COMPLETED. PRESS S TO CONT.
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