EB 8389 EN
53
Statistical information
4.7 Drive signal diagram hys-
teresis
3730-2 3730-3 3731-3 3730-4 3730-5 3731-5
•
•
•
•
•
•
The 'Drive signal diagram hysteresis' records
the change in drive signal ∆y in relation to
the valve position x.
The drive signal y is based on the internal
control signal of the i/p converter. This sig-
nal runs directly proportional to the signal
pressure p
out
in the pneumatic actuator, in re-
lation to the valve position.
The statistical information 'Drive signal dia-
gram - Hysteresis' allows an analysis in the
change of the friction forces in Types 3730-
2/-3 and Types 3731-3/-5.
Data are recorded after the hysteresis test is
activated. A single test can be performed im-
mediately or regular tests can be performed
after the adjusted time interval has elapsed.
The following listed parameters are activated
while the hysteresis test is being performed:
−
Travel/angle range start (Code 8): 0 %
−
Travel/angle range end (Code 9): 100 %
−
Enable travel/angle lower limit
(Code 10): Off
−
Enable travel/angle upper limit
(Code 11): Off
−
Enable set point cutoff decrease
(Code 14): Off
−
Enable set point cutoff increase
(Code 15): Off
Fig. 7:
Diagnosis > Statistical information > Drive signal diagram > Hysteresis
Содержание TROVIS 3730-3
Страница 6: ...6 EB 8389 EN...
Страница 43: ......
Страница 57: ......
Страница 83: ...EB 8389 EN 83...
Страница 130: ...130 EB 8389 EN...