Siemens HydroRanger 200 HMI, Руководство по эксплуатации

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Operating
7.6 mA I/0
HydroRanger 200 HMI
108
Operating Instructions, 06/2018, A5E36281317-AC
7.6.2 mA Output
The device has two mA outputs used to send measurements to other devices. Below are
settings for configuring the mA output to send a 4 to 20 mA signal, scaled from 10 % to 90 %
of span, of the second transducer:
Parameter Index Value Description
mA output range (2.5.2.)
(Page 180)
1 *4 to 20 mA Set to *4 to 20 mA range
Current output function (2.5.3.)
(Page 181)
1 Level Send mA proportional to Level
reading
mA output allocation (2.5.4.)
(Page 181)
1 Point 2 Base mA on Level Point 2
4 mA setpoint (2.5.5.) (Page 182) 1 10 Set 4 mA at 10% of span
1
20 mA setpoint (2.5.6.) (Page 182) 1 90 Set 20 mA at 90% of span
2
Fail-safe mode (2.4.4.) (Page 178) 1 0 Set fail-safe action as 0 mA
1
If the level reading drops below 10% of span, the mA output drops below 4 mA.
2
If the level reading rises above 90% of span, the mA output rises above 20 mA.
Calibrating 4 mA Output
1.
Connect the mA receiving device to the device.
2. Put the device into Navigation View.
3. Set Milliamp Output (2.5.9.) (Page 182) to 4.0 for the selected mA output.
4. View the mA level on the receiving device.
5. If there is a discrepancy, do the following steps:
–
Attach an ammeter to the device's mA output.
– Enter the exact value displayed on the ammeter into 4 mA Output Trim (2.5.11.)
(Page 183)
– The ammeter should then read exactly 4.00 mA.
The unit is now calibrated for 4 mA for the receiving device.