User's Manual

7ML19985LT01 SITRANS LR560 (PROFIBUS PA) – OPERATING INSTRUCTIONS Page 79
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Parameters
2.5.7. Alarms and Warnings
2.5.7.1. High Limit Alarm
The setting for the upper alarm limit in AIFB1 units.
2.5.7.2. High Limit Warning
The setting for the upper warning limit in AIFB1 units
2.5.7.3. Low Limit Warning
The setting for the lower warning limit in AIFB1 units.
2.5.7.4. Low Limit Alarm
The setting for the lower alarm limit in AIFB1 units.
2.5.7.5. Limit Hysteresis
Hysteresis is used to adjust the sensitivity of the trigger for alarm
messages. It is used to compensate when a process variable fluctuates
around the same value as a limit. A high level alarm occurs when a value
exceeds an upper limit. The alarm’s status remains true until the value
drops below the limit minus the alarm hysteresis. The directions are
reversed for low limit detection.
Enter a value for the hysteresis here, to be used for all warnings and
alarms. The units are the same as the Output scale, i.e. AIFB1 units.
Values
Range: -999999 to 999999
Default: 999
Values
Range: -999999 to 999999
Default: 999
Values
Range: -999999 to 999999
Default: -999
Values
Range: -999999 to 999999
Default: -999
Values
Range: 0 to 999999.00
Default: 0.20