Model 493.02 Controller Service
Shunt Calibration
Sensors
90
3. Turn on hydraulic power.
4. Zero the DC sensor output.
Stand-Alone:
Path: Setup > Force > Offset/Zero > Manual Offset
Adjust the Manual Offset for a 0 kN output. The sensor output
must be 0.000 kN for a proper shunt calibration.
Automated:
Adjust the Manual Cmd slider on the Manual Command
window for a 0 kN output. The sensor output must be 0.000 kN
for a proper shunt calibration.
5. Change the control mode to displacement.
Stand-Alone— Path: Status > Control Mode > Disp.
Automated— Change Control mode on the Manual Command
window to a Displacement control mode.
Shunt calibration cannot be performed on a sensor when it is in
control of the servo loop.
6. Determine the shunt calibration resistor from the following table:
B
RIDGE
R
ESISTANCE
SENSITIVITY RANGE
(% FULL SCALE)
R
ESISTOR
V
ALUE
350 Ω 2 mV/V 100%
50%
20%
10%
49.9 k
100 k
249 k
499 k
350 Ω 1 mV/V 100%
50%
20%
10%
100 k
200 k
499 k
1000 k
700 Ω 2 mV/V 100%
50%
20%
10%
100 k
200 k
499 k
1000 k
700 Ω 1 mV/V 100%
50%
20%
10%
200 k
402 k
1000 k
2000 k
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