West Control Solutions N4400 - Manual (Page 28)

Parameter Message
Display
Function Available Settings/Values
(Lower Main Display)
Setpoint Low
Limit
6
The minimum limit for setpoint
adjustment. Should be set to a
value which prevents setpoint
values causing damage to the
process. Input Range Minimum to current
setpoint value.
Default = Input Range Min.
Motor Travel
Time
11
Time taken for valve to travel
from one end stop to the other 5secs. to 5mins.
Default = 1min.
Minimum Motor
ON Time
11
Minimum drive effort required to
initiate movement in a
stationary valve 0.0secs. to (Motor Travel Time
+ 10).
Default = 1.0sec.
Recorder Output
Scale Maximum
7
The value of the process
variable or setpoint (as
applicable) for which the
recorder output is a maximum. −
1999 to 9999 (decimal point
position as per process variable
input range).
Default = Input Range Max.
Recorder Output
Scale Minimum
7
The value of the process
variable or setpoint (as
applicable) for which the
recorder output is a minimum. −
1999 to 9999 (decimal point
position as per process variable
input range).
Default = Input Range Min.
Output Power
Limit
3
Limits the power level of Output
1 (used to protect the process) 0% to 100%.
Output 1 Cycle
Time
8
Limits the frequency of
operation of the output relay to
optimise relay life 0.5, 1, 2, 4, 8, 16, 32, 64, 128,
256 or 512secs.
Default = 30secs.
Output 2 Cycle
Time
8
Limits the frequency of
operation of the output relay to
optimise relay life 0.5, 1, 2, 4, 8, 16, 32, 64, 128,
256 or 512secs.
Default = 30secs.
Process High
Alarm 1 value If Alarm 1 is a Process High
Alarm, this defines the level of
the process variable at or above
which Alarm 1 will be active
(see Figure 9-2) Input Range Maximum to Input
Range Minimum.
Default = Input Range Max.
Process Low
Alarm 1 value If Alarm 1 is a Process Low
Alarm, this defines the level of
the process variable at or below
which Alarm 1 will be active
(see Figure 9-2) Input Range Minimum to Input
Range Maximum.
Default = Input Range Min.
Band Alarm 1
value If Alarm 1 is a Band Alarm, this
defines the band of process
variable value (centred on the
setpoint) outside which the
process variable will cause the
alarm to become active (see
Figure 9-2). ±
(input span) from setpoint.
Default = 5 input units.
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