10 Control parameters and functions
n User qualification: trained user, see
Ä Chapter 3.4 ‘Users' qualifications’
on page 14
10.1
DULCOMETER
®
Com‐
pact Controller function
states
DULCOMETER
®
Compact Controller
function states have the following priority:
n 1.
‘STOP’
n 2.
‘PAUSE/HOLD’
n 3.
‘CAL’
(calibration)
n 4.
‘OPERATION’
(normal mode)
"CAL" (calibration) peculiarities
n Control goes to basic load, mA meas‐
urement outputs are frozen
n New faults are detected, however
they have no effect on the alarm relay
or the mA output
n Detection of measurement variable
relevant faults during
‘CAL’
(calibra‐
tion process) are suppressed (e.g.
LIMIT↑)
"PAUSE" peculiarities
n Control is switched to 0% control vari‐
able. The I-proportion is saved
n New faults are detected, however
they have no effect on the alarm relay
or the mA output
n Special case alarm relay in
‘PAUSE’
:
If activated the output relay switches
to
‘PAUSE’
(error message CON‐
TACTIN)
"HOLD" peculiarities
n Control and all other outputs are
frozen
n New faults are detected, however
they have no effect on the alarm relay
or the mA output. However the effect
of already existing faults (e.g. fault
current) remains
n Special case alarm relay: Activation of
the frozen alarm relay is permitted (=
no alarm), if all faults have been
acknowledged or have disappeared
n Special case alarm relay in
‘HOLD’
: If
activated the output relay switches to
‘HOLD’
(error message CON‐
TACTIN)
"STOP" peculiarities
n Control OFF
n New faults are detected, however
they have no effect on the alarm relay
or the mA output
n The alarm relay is switched off in
‘STOP’
Peculiarities of the "START" event, i.e.
switching from "STOP" to "OPERATION"
(normal mode)
n Fault detection starts afresh, all
existing faults are deleted
Generally applicable information
n If the cause of a fault disappears,
then the fault message in the LCD
footer disappears.
n A previously existing
‘ PAUSE/HOLD’
state is not influenced by starting a
‘CAL’
(calibration) process. If during
‘CAL’
(calibration) the functional state
‘ PAUSE/HOLD’
is released, then all
states will remain frozen until the end
of the
‘CAL’
(calibration) process.
Control parameters and functions
78
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