Operating Manual CMGZ 622
20
9.2
Calibrating the Measuring Amplifier
The calibration can be done using the „simulating method“ or the „mathematical
method“:
Simulating Method (recommended)
The following instructions are referring to a
setup and calibration on-site. The material
tension will be simulated by a weight (fig.
13).
The calibration procedure is written for
measuring range 1. It is valid analogous also
for measuring range 2. The commands for
measuring range 2 are writen in brackets.
Range 1: Make sure the digital input
„switch range“ is OFF (Range 2 = ON)
Check force sensors
•
Connect the first force sensor (ref. to
wiring diagram).
•
Check if a positive value is displayed
when loading the sensor in measuring
direction. If not, exchange terminals
+signal
and
–signal
on the measuring
amplifier.
•
If used, connect the second force sensor.
•
Check if a positive value is displayed when loading the sensor in measuring
direction. If not, exchange terminals
+signal
and
–signal
on the measuring
amplifier.
Find offset
•
Insert material or a rope loosely to the machine.
•
Press
MODE
key. Search and select the module
Spec.F CMGZ622 1
and the special
function
Find offset
with the
↑
↓
↵
keys (fig. 12).
•
Find offset by pressing the
↵
key for 3 seconds (fig. 12). The electronic unit
calculates automatically the new offset value. The display will return to the main
operating menu.
Find gain
•
Load material or rope with a defined weight (fig. 13)
•
Press
MODE
key. Search and select the module
Spec.F CMGZ622 1
and the special
function
Calibration
with the
↑
↓
↵
keys (fig. 12).
•
Set the force referring to the applied weight into the display with the
↑
↓
keys and
confirm with
↵
key (fig. 12). The electronic unit calculates automatically the new
gain value. The display will return to the main operating menu.
Repeat the calibration written above with the other measuring range.
fig. 13: Calibration measuring amplifier
C431011e
