Control Parameters And Functions; Dulcometer Compact Controller Function States - ProMinent DULCOMETER Assembly And Operating Instructions Manual

Compact controller ph/redox measured variable
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8

Control parameters and functions

Users' qualification: trained user, see
n
Ä Chapter 1.2 'Users' qualifications'
on page 7
8.1
DULCOMETER
Controller function states
DULCOMETER
®
Compact Controller
function states have the following priority:
'STOP'
1.
n
'PAUSE/HOLD'
2.
n
'CAL' (calibration)
3.
n
'OPERATION' (normal mode)
4.
n
"CAL" (calibration) peculiarities
Control goes to basic load, mA meas‐
n
urement outputs are frozen
New faults are detected, however
n
they have no effect on the alarm relay
or the mA output
Detection of measurement variable
n
relevant faults during the
bration) is suppressed (e.g. LIMIT↑)
"PAUSE" peculiarities
Control is switched to 0% control
n
value. The I-proportion is saved
New faults are detected, however
n
they have no effect on the alarm relay
or the mA output
Special case alarm relay during
n
'PAUSE' : If activated, the power
relay switches to
message: CONTACTIN)
Compact
®
'CAL' (cali‐
'PAUSE' (error
Control parameters and functions
"HOLD" peculiarities
Control and all other outputs are
n
frozen
New faults are detected, however
n
they have no effect on the alarm relay
or the mA output. However the effect
of already existing faults (e.g. fault
current) remains
Special case alarm relay: Activation of
n
the frozen alarm relay is permitted (=
no alarm), if all faults have been
acknowledged or have disappeared
Special case alarm relay during
n
'HOLD' : If activated the power relay
'HOLD' (error message:
switches to
CONTACTIN)
"STOP" peculiarities
Control OFF
n
New faults are detected, however
n
they have no effect on the alarm relay
or the mA output
'STOP' the alarm relay is switched
In
n
off
Peculiarities of the "START" event, i.e.
switching from "STOP" to "OPERATION"
(normal mode)
Fault detection starts afresh, all
n
existing faults are deleted
Generally applicable information
If the cause of a fault disappears,
n
then the fault message in the LCD
footer disappears.
An already existing state
n
HOLD' is not influenced by the start
'CAL' (calibration). If during
of a
'CAL' (calibration) the function state
' PAUSE/HOLD' ceases, then never‐
theless all states remain frozen until
the end of the
' PAUSE/
'CAL' (calibration)
69

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