Table of Contents
Advertisement
45. LIM
46. STRK
47. DCHG
48. ZERO
SIPART PS2 PA Manual
A5E00127926--05
Response threshold of the fault message
Here a value (%) can be set for the permissible variable of control error
for releasing the fault message.
If the parameters "44. TIM" and "45. LIM" are both set to "Auto" (factory
setting), the fault message is set if the slow step zone is not reached
within a certain time. This time is 2 times the initialization travel time
within 5 to 95% of the actuating path and 10 times this time outside 10
to 90% of the actuating path.
When the tight closing function is activated, monitoring for the control
deviation is switched off for the respective overflow direction (YCDO: <
0 %, YCUP: > 100 %) for parameter 45. LIM. We recommend
parameter 48. ZERO and 49. OPEN in the end positions for long--term
monitoring.
Limit value for monitoring the travel integral (number of strokes)
A limit value for the way integral can be set here. If the way integral
exceeds the limit value, the fault message output (optional) is activated.
This function enables a preventive maintenance of the fitting, see also
chapter 4.5 "Diagnostics", page 113.
This monitoring function can not be deactivated.
Limit value for monitoring the changes of direction
A limit value for the direction change counter can be set here. If this
counter exceeds the limit value, the fault message output is activated.
This function enables a preventive maintenance of the fitting, see also
chapter 4.5 "Diagnostics", page 113.
This monitoring function can be deactivated with the OFF setting
(factory setting).
Tolerance value for monitoring the bottom hard stop
With this value a limit value (in percent related to the total mechanical
distance) can be preset for the monitoring of the bottom hard stop. If
this tolerance value is exceeded or dropped below of, the fault
message output (optional) is activated.
This function detects when the bottom stop has changed by more than
the specified tolerance related to its initialization value. Monitoring
takes place when the valve is in tight closing bottom. Activation of the
tight closing bottom function (parameter "35.YCLS") is therefore a
prerequisite.
The fault message remains activated until either a subsequent
monitoring remains within the tolerance or a new initialization is
performed.
This monitoring function can be deactivated with the OFF setting
(factory setting). See also chapter 4.5 "Diagnostics", page 113.
Operation
109
Advertisement
Table of Contents
