User`s guide

Series D8 User’s Guide Chapter 6: Menu and Parameter Reference
Doc. 0600-3120-2000 Watlow Anafaze 147
Alarm Hysteresis
Enter the amount by which the process variable must return
within the alarm limit before a high alarm, low alarm or devi-
ation alarm clears. Use the alarm hysteresis to prevent repeat-
ed alarms as the process variable cycles around an alarm limit.
Values: See Table 6.15 on page 147 for values and decimal
placement. For communications the value is always 0 to 5000.
Default: See Table 6.15.
DeviceNet Object: Alarm (67 hex)
Table 6.15 Values for Alarm Hysteresis
Alarm Delay
Use this parameter to delay a failed sensor or process alarm
until the alarm condition has been continuously present for
longer than the delay time.
To delay alarms on powerup only, see Power Up Alarm Delay
on page 128.
Values: 0 to 255 seconds.
Default: 0
DeviceNet Object: Alarm (67 hex)
Input Type Display Format Values
Values via
Communications
Default
Thermocouple n/a 0 to 500 0 to 5000 2
RTD n/a 0 to 500.0 0 to 5000 2.0
Process
-999 to 3000 0 to 500 0 to 5000 2
-9999 to 30000 0 to 5000 0 to 5000 20
-999.9 to 3000.0 0.0 to 500.0 0 to 5000 2.0
-99.99 to 300.00 0.00 to 50.00 0 to 5000 0.20
-9.999 to 30.000 0.000 to 5.000 0 to 5000 0.020
-0.9999 to 3.0000 0.0000 to 0.5000 0 to 5000 0.0020
l01 Alarm hys- r
teresisb 2 ˚C
l01 Alarm delayr
b 0 sec