MR MSENSE DGA 2 - Modbus Settings

7 Commissioning
Messko GmbH 202056 BA4001150/10 ENMSENSE
®
DGA 2/3
Service code
Proceed in accordance with the description in the MESSKO®MSET param-
eterization software operating instructions in order to enter and transmit a
service code.
Service
code
Description
0 No action.
1 Sample extraction: This service code informs the device that an oil
sample has been taken for calibrating the absolute humidity H2O.
Please be sure to note the time stamp on the sample information
sheet!
Important: Adjustment is not possible unless a time stamp is set!
Note: The following conditions must exist for the device to permit an
adjustment:
Oil temperature at sample extraction: +10 to +90°C
Ambient temperature at sample extraction: -20 to +60°C
For adjustment of the gases H2 and CO: Lab result (reference value)
> 50ppm
For adjustment of the absolute humidity H2O (ppm): Lab result (refer-
ence value) > 5ppm
4 Absolute humidity [ppm]: The humidity (H2O) determined in the oil
is output as the absolute humidity with the unit [ppm]. Warnings and
alarms are evaluated only for the absolute humidity.
5 Relative humidity [%RH] (default): The humidity (H2O) determined
in the oil is displayed as the relative humidity with the unit [%RH].
Warnings and alarms are evaluated only for the relative humidity.
6 Trigger the fail-safe relay test alarm: The fail-safe alarm is triggered
manually. The fail-safe relay switches within 60seconds. The alarm
and the fail-safe relay will be automatically switched off again after five
minutes.
7 Deactivation of the fail-safe relay test alarm: A manually triggered
fail-safe alarm will be canceled. The fail-safe relay switches off.
33 New calibration of the H2O value: First enter the analysis results for
the H2O reference and the time stamp of the sample extraction in the
"Settings" menu.
Then enter Service Code 33 here.
Determine the new reference value at the device through the final syn-
chronization.
Maintenance information
A maintenance message that is configurable can be issued by the device via
the available relay contacts (refer to the MESSKO® MSET parameterization
software). It is possible to have a maintenance message issued six months
in advance and when maintenance is due.
7.4.3 Modbus settings
You can configure the following settings for the Modbus communication us-
ing the MESSKO® MSET parameterization software.