42 ATR401 - User manual
(N.O. threshold) Normally open, active from alarm reaching
8
(N.C. threshold) Normally closed, active from alarm reaching
8
49 Alarm 2 Hysteresis
-999…+999 digit
9
(tenth of degree if temperature), Default: 0.0.
50 Alarm 2 Rearmament
Type of reset for alarm 2 contact
Automatic Reset (Default)
Manual Reset by keyboard
Manual reset stored (keeps relay status also after an eventual
power failure)
51 Alarm 2 State Error
Contact status for alarm 2 output in case of error
Open contact (Default)
Closed contact
52 Alarm 2 Led
De nes led A2 status corresponding to relevant contact
ON with open contact
ON with closed contact (Default)
53 . Alarm 2 Delay
Ritardo allarme 2
-600…+600 seconds.
Negative: delay at exit from alarm.
Positive: delay at starting of alarm.
Default: 0.
54 Alarm 2 Setpoint Protection
Alarm 2 set protection. Does not allow the user to change set value
Modi cation allowed (Default)
Protected
Protected and not visualized
8
On activation, the output is inhibited if the controller is in alarm mode. Activates only if alarm
condition reappers, after that it was restored.
9
The display of the decimal point depends on the setting of parameter
. and
or
and