Rice Lake 880 Performance Series Indicator/Controller Technical/Service Manual - Manual (Page 114)

108 880 Technical/Service Manual
10.11 Analog Output Calibration
See Section 3.0, Table 3-17 for ANALOG OUTPUT parameters.
The following calibration procedure requires a multimeter to measure voltage or current output from the analog
output module. If the option is not already installed, install it in according to the instructions included with the
option.
Note
The analog output must be calibrated after the indicator itself has been configured (Section 3.0) and calibrated
(Section 4.0).
1. Enter setup mode and go to the ALGOUT menu (see Figure 3-23):
• Set OUTPUT as desired for 0-10V, 0-20mA, or 4-20mA output.
• Set MIN to lowest weight value to be tracked by the analog output
• Set MAX to highest weight value to be tracked by the analog output
2. Connect multimeter to connector J1 on the analog output board:
• For voltage output, connect voltmeter leads to pins 3 and 4 (-V, +V)
• For current output, connect ammeter leads to pins 1 and 2 (-mA, +mA)
3. Adjust zero calibration:
• Scroll to the TWZERO parameter.
• Press , 000000 will display
• Check voltage or current reading on multimeter.
• Set the parameter to match the reading from the multimeter.
• Press or to select the digit.
• Press or to increment or decrement the value.
• Press TARE to move to the decimal point entry.
• Press or to adjust the decimal point placement.
• Press TARE to accept the displayed value.
4. Adjust span calibration:
• Scroll to the TWSPAN parameter.
• Press , 000000 will display.
• Set the parameter to match the reading from the multimeter.
• Press or to select the digit.
• Press or to increment or decrement the value.
• Press TARE to move to the decimal point entry.
• Press or to adjust the decimal point placement.
• Press TARE to accept the displayed value.
5. Verify calibration:
• Return to the TWZERO/TWSPAN parameter and verify that the calibration has not drifted.
• Repeat calibration if needed.
6. Return to normal mode. Analog output function can be verified using test weights.