4 Operation
13
4.2
Principle of operation
Normal display
The display shows the process value.
Operating level
The setpoint
SP
is input here. On active setpoint switching via the logic input,
SP 1
or
SP 2
ap-
pears in the display. When the ramp function is active, the ramp setpoint
SPr
is displayed. With
activated timer function, the timer value
t i
or the timer start value
t i 0
is shown.
The setpoint is altered dynamically using the
i
and
d
keys. The setting will be accepted auto-
matically after approx. 2 sec.
Parameter level
The setpoints, the limit value of the limit comparator, the controller parameters and the ramp slo-
pe are programmed here.
Configuration level
The basic functions of the controller are set here.
In order to make the settings, it is necessary to change to the configuration level
A
via the parameter
y:0
(parameter level).
Timer level
The current timer value (only when the timer has been started) and the timer start value are al-
tered here. The parameters at this level are marked with an underscore in the display.
Time-out
If no operation occurs, the controller returns automatically to normal display after approx. 30 sec
(exception: with timer functions starting via power ON, the timer value is displayed). If the timer
value is displayed at the operating level, time-out is not active.
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