11
HM1734-WM STRAIN GAGE INPUT MODULE
A complete listing of a sample ladder logic program is included
at the back of this manual.
Examples shown here are for reference.
All values are 0 (default) on initial start-up.
This means that all alarms are disabled.
You must make the following adjustments for proper operation:
Balance sensor input(s)
Set Calibration numbers
PLEASE NOTE:
The module excitation voltage is 5VDC.
Most load cells are rated for 10VDC to 15VDC.
Even though the module voltage is lower than the load cell rated voltages it
will perform with 5VDC for all load cells.
Follow Steps 1 and 2 for each channel.
Step 1. Balance Sensor Input Check
1.
Set to CAL mode.
2.
Set Clear Tare bit momentarily.
3.
Check Raw A/D value. (Range 2,090,000 to 2,100,000)
CH1 = Controller Tag GET_WEIGH_CH1
CH2 = Controller Tag GET_WEIGH_CH2
4.
Set Zero Tare bit momentarily.
Step 2. Set Calibration Numbers
1.
Set Scale to capacity of load cell.
2.
Set mV/V to load cell specification.
Example:
100 ton load cell, 2.025 mV/V
For scale set, enter 100
For mV/V set, enter 2025
3. Set to RUN mode.
Setup Procedure
