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52 - ATR142 -
User manual
13.b
Absolute alarm or threshold alarm referring to
setpoint command (
a.c.aL.
selection)
Off
On
Hysteresis
parameter
> 0
Off
Alarm Spv
Command Spv
Time
Alarm output
Absolute alarm refers to
the command set, with
the controller in heating
functioning (Parameter 11
act.t.
selected
Heat
) and
hysteresis value greater
than “0” (Parameter 28
a.1.Hy.
> 0).
The command set can be
changed by pressing the
arrow keys on front panel
or using serial port RS485
commands. *
13.c
Band Alarm (
b. aL.
selection)
Off
Hysteresis
parameter
> 0
Alarm Spv
Alarm Spv
Command Spv
Time
Alarm output
Band alarm hysteresis
value greater than “0”
(Parameter 28
a.1.Hy.
> 0). *
Off
Off
Off
Hysteresis
parameter
< 0
Hysteresis
Pv
Alarm Spv
Command Spv
Time
Alarm output
Band alarm hysteresis
value less than “0”
(Parameter 28
a .1.Hy .
< 0). *