Operate
6.2 Parameter description
SITRANS VP300 with or without HART
Operating Instructions, 03/2011, A5E01258666-03
107
See also
"3.6.3 Shift lower endstop" (Page 108)
"3.6.4 Shift upper endstop" (Page 110)
"3.6.1.2 Basic limit value"
Conditions:
Activation of the monitoring function
"3.6.1.1 Activation" (Page 106)
Factory setting:
1.0
Setting range:
0.1 ... 100.0 %
Purpose:
The basic limit value determines the degree of admissible deviation
from the expected progression of the position.
"3.6.1.3 Factor 1" to "3.6.1.5 Factor 3"
Conditions:
Monitoring function is activated.
"3.6.1.1 Activation" (Page 106)
Factory setting:
With "3.6.1.3 Factor 1": 5
With "3.6.1.4 Factor 2": 10
With "3.6.1.5 Factor 3": 15
Setting range:
0.1 ... 100.0
Identical setting range for each factor
"3.6.2 Stiction"
This menu is used to make the settings for monitoring the stiction of the final control element
(slipstick). The so-called slip jumps indicate excessive stiction.
Note
Wrong interpretation for travel times under a second
Travel timesless than one second result in the positioner no longer differentiating exactly
between a normal actuator movement and a sudden change of movement (slip jump).
The current value of the stiction is displayed in percent in the "3.4.11 Slipstick effect"
(Page 94) parameter. If this value exceeds one of the three parameterizable thresholds
during the test, a maintenance message is output by the device.
