7 analog output calibration – Rice Lake Intrinsically Safe User Manual
Page 60
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320IS Installation Manual
7.7
Analog Output Calibration
The following calibration procedure requires a multimeter to measure voltage or current output from the analog
output of the I/O module. If the option is not already installed, see Section 3.3.7 on page 31.
The analog output must be calibrated after the indicator itself has been configured (Section 3.0 on page 20)
and calibrated (Section 4.0 on page 33)
.
Figure 7-3. Analog Output Menu
1. Enter setup mode and go to the ALGOUT menu (see Figure 7-3). See Table 8-7 on page 61 for information
on switch settings.
•
Set OFFSET to 0% for 0-5 V, ±5 V, ±10 V output, 20% for 4–20 mA 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 desired analog output:
•
For voltage output, connect voltmeter leads to pins 1 and 3 for ALOUT1 or pins 6 and 5 for ALOUT2
•
For current output, connect ampmeter leads to pins 1 and 2 ALOUT1 or pins 4 and 6 for ALOUT2
3. Adjust zero calibration: Scroll to the TWZERO parameter. Check voltage or current reading on multimeter.
Press and hold or to adjust the zero value up or down. Press
Enter
to save the displayed value.
4. Adjust span calibration: Scroll to the TWSPAN parameter. Check voltage or current reading on multimeter.
Press and hold or to adjust the span value up or down. Press
Enter
to save the displayed value.
5. Final zero calibration: Return to the TWZERO parameter and verify that the zero calibration has not
drifted. Press and hold or to re-adjust the zero value as required. Press
Enter
to save the displayed
value.
6. Return to normal mode. Analog output function can be verified using test weights.
Note
SOURCE
GROSS
0%
20%
OFFSET
ERRACT
FULLSC
HOLD
000000
number
MIN
10000
number
MAX
TWZERO
NET
TWSPAN
ZEROSC
ALOUT1
0
number
65300
number
ALOUT2
XXXXXXX
XXXXXXX
XXXXXXX
XXXXXXX
VERS
ALGOUT
DIG IN
PROGRM
PFORMT
SERIAL
CALIBR
CONFIG
FORMAT
XXXXXXX
SETPNT
SOURCE
GROSS
0%
20%
OFFSET
ERRACT
FULLSC
HOLD
000000
number
MIN
10000
number
MAX
TWZERO
NET
TWSPAN
ZEROSC
0
number
65300
number