West Control Solutions KS98-1 - Manual (Page 152)

III-8.5 LIMIT ( multiple alarm (No. 44))
The function checks input variable x1 for 8 alarm values L1...L 8. Dependent of configuration by Mode 1 ...
Mode 8, the relevant alarm value is evaluated as MAX or MIN alarm.
With MAX alarm configuration, the alarm is triggered when the input signal is higher than the alarm value and finished
when it is lower than ( alarm value - hysteresis
Xsd ).
With MIN alarm configuration, the alarm is triggered when the input signal is lower than the alarm value and finished
when it is higher than ( alarm value + hysteresis
Xsd ).
Inputs/outputs
Analog input
x1 Input variable to be monitored
Digital outputs
l1 ... l8 The alarm statuses of alarm 1 to alarm 8: 0 = no alarm; 1= alarm case
Configuration parameters:
Parameter Description Range Default
Mode1 ... Mode8
alarm functions of the 8 alarms max-alarm MAX-alarm t
min-alarm MIN-alarm
Parameters:
Parameter Description Range Default
L1 ... L8 Alarm values of alarm 1 to alarm 8 -29 999 ... 999 999 0
Xsd Switching hysteresis Xsd 0 ... 999 999 0
9499-040-82711 Limit value signalling and limiting
LIMIT ( multiple alarm (No. 44)) III-152
x1
L2 L8 L1
...
Mode1Mode2 Mode8
...
l1
...
l8
Xsd
Fig. 15