Honeywell VPR100 User Manual page 161

Prompt
HYSTERESIS OFF or number
DELAY TIME OFF or number
SAMPLE HOLD OFF, discrete parameter, 0,
1
12/00
Table 4-50 Alarm Prompts
Range/Selections
VPR & VRX – User Manual
Programming Function Blocks and Features
Definition
Hysteresis affects only the point at which an alarm clears. A
high alarm will clear when the input is less than the setpoint
minus the hysteresis value. A low alarm will clear when the
input is greater than the setpoint plus the hysteresis value. A
deviation alarm will clear when the input is less than the
setpoint minus the hysteresis value.
If the alarm condition clears before the delay time (in
seconds) expires, no alarm will be indicated.
When this parameter level = 1(ON), the alarm processing is
disabled and the output is held.
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