Samson 3730 Series Operating Instructions

EB 8389-1S EN 39
On/off valve
1.
Device settings > Alarm settings
− Travel time assessment limit (Code 49 - h7):
[0.6] to 30.0 s
− Valve end position limit (Code 49 - h8):
[0.3] to 100.0 %
2.
Device settings > Alarm settings > Status
classication > On/off valve
− Increasing breakaway time: [
], , ,
− Decreasing breakaway time:
[ ], , ,
− Transit time increasing: [ ], , ,
− Transit time (decreasing): [ ], , ,
− Final travel/angle value not reached:
[ ], , ,
− Increasing nal travel/angle value:
[ ], , ,
− Decreasing nal travel/angle value:
[ ], , ,
5.2 Analysis and monitoring
The analysis pinpoints to a fault when at
least one of the following conditions is met
while the valve is moving:
− The current 'Increasing breakaway time'
differs from the reference value by the
amount entered in 'Travel time assess-
ment limit'.
− The current 'Decreasing breakaway time'
differs from the reference value by the
amount entered in 'Travel time assess-
ment limit'.
− The current 'Transit time increasing' dif-
fers from the reference value by the
amount entered in 'Travel time assess-
ment limit'.
− The current 'Transit time (decreasing)' dif-
fers from the reference value by the
amount entered in 'Travel time assess-
ment limit'.
− The current 'Transit time increasing' dif-
fers from the reference value by the
amount entered in 'Valve end position
limit'.
− The current 'Transit time (decreasing)' dif-
fers from the reference value by the
amount entered in 'Valve end position
limit'.
− The valve end position is not reached.
Valve end position
(decreasing)
Valve end position
(increasing)
Breakaway time
(decreasing)
Transit time
(decreasing)
Breakaway time
(increasing)
Transit time
(increasing)
x [%]
w [%]
t [s]
Fig. 6: Analysis of diagnostics for on/off valve
If one of these conditions is met, the position-
er generates an 'On/off valve status' mes-
sage according the selected status classica-
tion.
Diagnostics > Monitoring
− On/off valve status (Code 85):
, , ,

Samson 3730 Series Specifications

General

Brand	Samson
Model	3730 Series
Category	Valve Positioners
Language	English