2
IQ plus 355 Analog Output Option
Enclosure Reassembly
Once cabling is complete, position the backplate over
the enclosure and reinstall the backplate screws. Use
the torque pattern shown in Figure 2 to prevent
distorting the backplate gasket. Torque screws to 15
in-lb (1.7 N-m).
Figure 2. IQ plus 355 Enclosure Backplate
Analog Output Calibration
The following calibration procedure requires a
multimeter to measure voltage or current output from
the analog output module. No test weights are
required for calibration.
NOTE:
The analog output must be calibrated
after
the
indicator itself has been configured and calibrated.
Figure 3. Analog Output Menu
1. Enter setup mode and go to the ALGOUT
menu (see Figure 3).
•
Set OFFSET to 0% for 0–10 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
To enter MIN and MAX values, use the and
keys to select the digit; use and to
increment or decrement the value.
2. Connect multimeter to analog output:
•
For voltage output, connect voltmeter
leads to pins 3 and 4
•
For current output, connect ammeter
leads to pins 1 and 2
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.
**
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.
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.
6. Return to normal mode. Analog output
function can be verified using test weights.
**
When using the data stream mode on either port (EDP
or Printer), TWZERO must be set to greater than 50 mV.
S e t u p s w i t c h a c c e s s s c r e w
Fillister head screws
10
9
8
7
4
3
1
2
5
6
To r q u e b a c k p l a t e s c r e w s t o 1 5 i n - l b ( 1 . 7 N - m )
To r q u e p a t t e r n
XXXXXXX
XXXXXXX
VERS
ALGOUT
DIG IN
XXXXXXX
PROGRM
PFORMT
SERIAL
CALIBR
XXXXXXX
CONFIG
FORMAT
SOURCE
GROSS
0%
20%
OFFSET
ERRACT
FULLSC
HOLD
000000
number
MIN
10000
number
MAX
TWZERO
NET
TWSPAN
ZEROSC
