Operate
6.2 Parameter description
SITRANS VP300 with or without HART
Operating Instructions, 03/2011, A5E01258666-03
109
The current value is displayed in percent in the "3.4.12 Shift lower endstop" (Page 94)
parameter. If one of the three parameterizable thresholds falls below this value during the
test, a maintenance message is output by the device.
"3.6.3.1 Activation"
Requirements:
The "Down" or "Down and up" option is set in the"3.6.3.5 Tight
closing" (Page 109) parameter.
Factory setting:
Off
Setting options:
Off
On
Purpose:
Detect valve errors.
Description:
Use this parameter to activate the test for monitoring the lower
endstop. With this parameter activated, the positioner detects
shifting of the lower endstop. The test is always carried out when the
valve is in the "Tight closing > Down" position. It checks whether the
lower endstop has changed as compared to its value during
initialization. Please check whether the thresholds apply to your
application.
"3.6.3.2 Threshold 1" to "3.6.3.4 Threshold 3"
Requirements:
Monitoring function is activated.
"3.6.3.1 Activation" (Page 109)
Factory setting:
With "3.6.3.2 Threshold 1": 1
With "3.6.3.3 Threshold 2": 2
With "3.6.3.4 Threshold 3": 4
Setting range:
0.1 ... 10.0
Identical setting range for each threshold
"3.6.3.5 Tight closing"
Requirement:
Monitoring function is activated. "3.6.3.1 Activation" (Page 109)
Factory setting:
Off
Setting options:
Off
Up
Down
Up and down
