West Control Solutions KS 92-1 Programmer manual - Manual (Page 68)

7.3.6 Bandwidth monitoring
Bandwidth monitoring is valid for all
program segments. An individual band-
width can be determined for each pro-
gram.
When leaving the bandwidth (b.Lo =
low limit; b.Hi = high limit), the pro-
grammer is stopped (run LED flashes).
The program continues running when
the process value is within the prede-
fined bandwidth again.
g
With segment type Step and bandwidth monitoring activated, the control
deviation alarm is suppressed, until the process value is in the band again.
g
If band alarm signalling as a relay output is required, a control deviation alarm
with the same limits as the band limits must be configured.
7.3.7 Search run at programmer start
The programmer starts the first segment at the actual process value (search run).
This may change the effective runtime of the first segment.
7.3.8 Behaviour after mains recovery or sensor error
Mains recovery
After power recovery, the last program set-points and the time elapsed so far are
not available any more. Therefore, the programmer is reset in this case. The con-
troller uses the internal set-points and waits for further control commands (the
run LED blinks).
Sensor error
With a sensor error, the programmer goes to stop condition (the run LED blinks).
After removal of the sensor error, the programmer continues running.
Programmer level
Programmer description 68 KS 90-1
p / KS 92-1 p
time
process value x
Sp, X
Stop Stop
set-point profile
b.Hi
b.Lo
SP
SP1
Pt (Gradient)
1
SP
SP1
Pt
1