Endress+Hauser Memograph CVM40, Руководство по эксплуатации

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Memograph CVM40 Wiring
Hauser 13
Lamp voltage adjustment (Vx Adj.):
• Turn clockwise to decrease voltage.
• Turn counter-clockwise to increase voltage.
Lamp voltage sense tool:
The lamp voltage sense tool allows to read the lamp voltage on the display of CVM40 without the cable
and sensor connected.
This procedure is only necessary when changing the sensor type. E.g. when changing from an OUSAF44
sensor to an OUSAF11 sensor, the lamp voltage needs to be reduced from 12V to 5V. User has to do
this change prior to connecting the sensor. Refer to the sensor manual for the lamp voltage of the
respective sensor.
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Caution!
Use this tool before connecting any new sensor type to the transmitter.
Failure in doing so can damage the lamp.
By using the lamp voltage sense tool the lamp voltage can be adjusted approximately to the rated value
before connecting the sensor. Connect the power supply pin V1.1 and V1.2 to voltage sense pin V1.3
and V1.4.
The following steps are required for changing the sensor type:
1. Disconnect the cable set of the old sensor.
2. Connect the lamp voltage sense tool to the lamp power supply.
3. Select in the main menu of CVM40 "Diagnosis/simulation" and then "Sensor status".
4. Adjust the voltage trimmer to the rated lamp voltage by using a small screwdriver.
5. Take off the voltage sense tool.
6. Connect the cable set of the new sensor to the lamp power supply.
7. Observe the lamp voltage on the display and fine tune the lamp voltage to compensate the voltage
drop on the cable.
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Fig. 4: Lamp voltage sense tool