PMA Digital 280-1, Operating Manual

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4 Controller
In addition to the simple indicator function, Digital 280-1 can be used also as a
signaller or an on/off controller, as a two point or a continuous controller.
Prerequisite: Digital 280-1 is fitted with option “with outputs” and is configured
for the controller function.
Configuration:
Function 2 provides selection between indicator and controller:
Func r Fnc.2
Controller
4.1 Operation
Adjusting the set-point
Press key Ù to switch over to the
set-point. The set-point can be changed
by pressing keys Ì und È .
error list, if errors pending
extended operating level, if configured
4.2 Control parameters
The range of different processes to be controlled is very wide, from very fast
pressure control to very slow thermal processes such as control of a blast furnace.
As the controller behaviour has to be different with each of these processes, the
control parameters must be adjusted for the relevant process individually. Adjust-
ment can be done either manually or by the controller itself.
Controller
Digital 280-1 Operation 17
FUNC
ADA
OUT1
OUT2
OUT3
ERR
Digital 280-1
Ù
FUNC
ADA
OUT1
OUT2
OUT3
ERR
Digital 280-1
FUNC
ADA
OUT1
OUT2
OUT3
ERR
Digital 280-1
Ù
Ù
Ù