Super Systems 7SL User Manual
Page 18
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(Hysteresis)
ON
ALM LED
OFF
Alarm status*
Relay
No alarm status
ACK
(Alarm
threshold)
FLASH
FLASH
Example for P2 = H.A.A.c
ACK = Alarm acknowledgment from "AK" parameter
or serial link.
* Alarm Status:Relay energized (P3 = dir)
Relay de-energized (P3 =rEV)
Example for P2 = H.L.
ACK = Alarm acknowledgment from "AK" parameter
or serial link.
* Alarm Status:Relay energized (P3 = dir)
Relay de-energized (P3 =rEV)
(Hysteresis)
ON
ALM LED
OFF
Alarm status*
Relay
No alarm status
ACK
ACK
(Alarm
threshold)
FLASH
FLASH
P3 = Alarm Action
(Skipped if option not is available or P1 = none)
dir
=
Direct action
(Relay energized in alarm condition)
rEV =
Reverse action
(Relay energized in non-alarm condition)
P4
=
Alarm Standby Function
(Skipped if option is not available or P1= none)
OFF =
Standby function disabled
On =
Standby function enabled
If the alarm is programmed as band or deviation, this
function masks the alarm condition at start up and at a
“Su” setpoint change until the process variable reaches
the alarm threshold, plus or minus hysteresis. This standby
function masks a Process Alarm condition at start up until
the process variable reaches the alarm threshold plus or
minus hysteresis.
PF = Time Constant for Filter on Measured Value for
Alarm Action
(Skipped if option is not available or P1 = none)
Range: From 0 (filter OFF) to 8 seconds
(First order filter with selected time constant.)
n 1 = Safety Lock
0
=
UNLOCKed. The device is always UNLOCKed
and all parameters can be modified.
l
=
LOCKed. The device is always LOCKed and
no parameters can be modified
From 2 to 9999 = This number is a password, to be used
in run time (see “nn”), to LOCK/UNLOCK the
device.
7sl-2-00.p65
9/17/02, 2:40 PM
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