Alarm hysteresis, Alarm delay, Alarm hysteresis 147 – Watlow Series D8 User Manual
Page 165: Alarm delay 147, Table 6.15—values for alarm hysteresis 147

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:
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
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