EMCO Load Weigher
5-57
5
iControl DC
• Press the menu button twice. The control unit’s display begins to count down. Exit
the cartop before the countdown finishes. When the full load weight has been learned,
will be displayed. You can press the menu button until the weight is shown
on control unit display. The weight displayed should be the value of the weights in the
car, in kilograms.
6. Enter the overload weight into the control unit:
• Press the menu button until is displayed.
• Enter the value of the overload weight, in kilograms (1lb = .45359Kg). Press the
button to select a digit (blinks when selected) and press the button to set the value.
• Press the menu button three times. (Note that when the menu button is pressed
once, it displays “On” to allow you to set the AL C relay to normally open or normally
closed. MCE does not use this relay, so just continue pressing the menu button two
more times to save the value).
7. With the full load of weights in the car, using a digital multimeter, measure the voltage
at terminals 0-10v and Com on the control unit. It should be approximately 8 volts.
Note the exact value.
8. Proceed to Final Calibration with iControl on page 5-58.
Auto-zero Calibration
The EMCO load weigher has an auto-zero calibration option which can be used if needed. Typi-
cally this option is recommended for 2 to 1 roping or where guide shoes, rather than guide roll-
ers, are used.
How auto-zero calibration works:
• The control unit must see no power on the Hold terminals. Some installations use these
terminals to indicate when the doors are closed, but with MCE controllers these terminals
are not used.
• The CAde parameter must be set to 50.
• When the control unit senses no change in weight for two minutes, it automatically per-
forms the CEro zero load calibration (learns the empty car weight).
To enable auto-zero calibration:
1. Press the menu button until is displayed.
2. Enter the value 50. Press the button to select a digit (blinks when selected) and
press the button to set the value.
3. Press the menu button twice to save the value.
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