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36 -
ATR121/141 - User manual
Band alarm (
A. b
|
AL..
selection)
1
Pv
Off
Off
On
On
On
Hysteresis
parameter
> 0
Time
Alarm
output
Band alarm with
hysteresis.
N.B.: hysteresis (par. 23
HY. a
|
Hys. a
) can not be
lower than 0.
The alarm value is the
upper or lower deviation
from the command
setpoint that enables the
output.
Exemple:
• command set = 100°C
• alarm set = 5°C
• alarm active if
temperature > 105°C
or temperature < 95°C
upper deviation alarm (
a. d.s
|
AL.D.S.
selection)
1
Comand Spv
Alarm Spv
Off
Off
Hysteresis
parameter
> 0
Time
Alarm
output
Alarm Spv
Comand Spv
Upper deviation alarm
value of alarm
setpoint greater than “0”.
N.B.: hysteresis (par. 23
HY. a
|
Hys. a
) can not be
lower than 0.
Summary of Contents for ATR 121
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