Calibration - WAGO 750 Series Manual

60 Commissioning
2/4 Analogei ngangs klemme Analog 750- 464 ( Skali erung)
7.1.3.4

Calibration

The I/O module can be recalibrated to correct the effects of long-term drift or to
optimize accuracy in a thermally stable state. Calibration is dependent on the
signal type for current or voltage measurement previously set for the respective
channel.
The channel must be recalibrated if the signal type changes!
If switching between voltage and current measurement or from a disabled
channel to a voltage or current measurement, you must recalibrate the respective
channel when user calibration is enabled.
Before the Calibration, Please Note the Following Information!
• Use a low-noise, high-precision calibrator for the calibration. The calibrator
accuracy must be higher than that of the device to be calibrated by a factor
of ten.
• If there are any, disconnect all cables from the I/O module to the system.
• Use a separate 24 V power supply to supply the node.
• Use short, shielded cables to connect to the calibrator.
• Calibrate each channel separately.
Calibration for voltage measurement with "± 10 V" or „± 200 mV only,
calibration for current measurement with "± 20 mA" only!
Throughout the calibration, the signal type „0 ... 10 V" is automatically set to
signal type "±10 V". Throughout the calibration, the signal types „0 ... 20 mA", „4
... 20 mA" and „3,6 ... 21 mA" are automatically set to signal type "± 20 mA". The
previously set signal type is saved and reset when calibration is exited or the
parameter dialog is ended. With the signal types „± 10 V", „± 200 mV" and „± 20
mA" the settings remain unchanged!
Manual
Version 1.0.0
WAGO-I/O-SYSTEM 750
750-471 4AI U/I Diff Galv