User manual - ATR171 43
12.b Absolute Alarm or Threshold Alarm Referring to Setpoint Command
(selection
a . c.AL.
)
1
Absolute alarm refers to the command set,
with the controller in heating functioning
(par. 17
act. t.
selected
Heat
) hysteresis
value greater than “0 (par. 36
a .1 . H y .
> 0).
Command set can be changed by pressing
the arrow keys on front panel. *
12.c Band Alarm (selection
b . aL.
)
1
Band alarm with hysteresis value greater
than “0”. (par. 36
a .1 . H y .
> 0). *
2
Band alarm with hysteresis value minor
than “0”. (par. 36
a .1 . H y .
< 0). *
* a) The example refers to alarm 1; the function can also be enabled for alarm 2 and 3 on models that include
it.
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