ProMinent DULCOMETER D1C User manual

Operating Instructions
DULCOMETER®D1C
Part 2: Adjustment and Operation,
Measured Variable Standard Signal
ProMinent®
D1C2-mA-001-GB
Please completely read through operating instructions! · Do not discard!
The warranty shall be invalidated by damage caused by operating errors!
D1C A ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
12.3
%
START
STOP
DULCOMETER
mA
START
STOP
DULCOMETER
1
2.
3
%
mA
Please enter the identity code of your device here!
Type WType D
Part no. 987528 ProMinent Dosiertechnik GmbH · D-69123 Heidelberg · Germany BA DM 147 04/07 GB
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr1

2
D1C A DULCOMETER®Controller Series D1C / Version A
Type of mounting
DControl panel installation 96 x 96 mm
WWall mounting
Operating voltage
0230 V 50/60 Hz
1115 V 50/60 Hz
2200 V 50/60 Hz (only with panel installation)
3100 V 50/60 Hz (only with panel installation)
424 V AC/DC
Measured variable
SStandard signal 0/4-20 mA
Connection of measured variable
1Terminal standard signal 0/4-20 mA
Correction variable
0None
Feed forward control
0None
1As standard signal 0/4-20 mA
2As frequency 0-500 Hz
3As frequency 0-10 Hz
Control input
0None
1Pause
Signal output
0None
1Standard signal 0/4-20 mA measured value
2Standard signal 0/4-20 mA control variable
42standard signal 0/4-20 mA outputs, free programmable
Power control
GAlarm and 2 limit value/timer relays
MAlarm and 2 solenoid valve relays
RAlarm relay and servomotor with feedback
Pump control
0None
2Two pumps
Control characteristics
0None
1Proportional control
2PID control
Log output
0None
Language
DGerman
EEnglish
FFrench
IItalian
NDutch
SSpanish
PPolish
ASwedish
BPortuguese
UHungarian
GCzech
1 Device Identification / Identity Code
D1C A
Please enter the identity code of your device here!
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr2

3
2General User Information
Page
1Device Identification / Identity Code..................................................................................................... 2
2General User Information ...................................................................................................................... 3
3Device Overview / Controls ................................................................................................................... 4
4Functional Description .......................................................................................................................... 5
5Display Symbols .................................................................................................................................... 6
6Operation diagram ................................................................................................................................. 7
7Restricted Operating Menu ................................................................................................................... 8
Layout .............................................................................................................................................. 8
Description ...................................................................................................................................... 9
8Complete Operating Menu .................................................................................................................. 12
Overview........................................................................................................................................ 12
Description .................................................................................................................................... 13
9Faults/Notes/Troubleshooting............................................................................................................. 24
General User Information
These operating instruction describe the technical data and function of the series DULCOMETER®D1C
controller, provide detailed safety information and are divided into clear steps.
IMPORTANT
• Please observe the parts of these operating instructions applicable to your particular
version! This is indicated in the Section “Device Identification / Identity Code”!
•Correct measuring and metering is only possible in the case of impeccable operation of
the sensor. The sensor has to be calibrated / checked regularly!
NOTE
A form “Documentation of controller settings type D1C” is available under
www.prominent.com/documentation_D1C for the purpose of documenting the controller
settings.
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr3

4
UP button
To increase a displayed numerical value
and to change variables (flashing
display)
BRANCH BACK button
Back to permanent display or start of
relevant setting menu.
DOWN button
To decrease a displayed numerical
value and to change variables (flashing
display).
CHANGE button
To change over within a menu level
and to change from one variable to
another within a menu point.
START/STOP button
Start/stop of control and metering
function.
ENTER button
To accept, confirm or save a displayed
value or status. For alarm acknow-
ledgement.
3Device Overview / Controls
D1C2-mA-002-GB
STOP
START
"Start/stop"
button
®
DULCOMETER®
STOP
START
Graphic display
"Enter"
button
"Up"
button
"Change"
button
"Down"
button
"Branch back"
button
Display field
Measured variable
Standard signal
(0/4–20 mA)
mA
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr4

5
4Functional Description
NOTE
Please refer to the description of the complete operating menu in Section 8 for a detailed
description of the individual characteristics of the D1C controller!
4.1 Operating Menu
The DULCOMETER®D1C controller permits settings to be made in two different menus – a “complete”
and a “restricted” menu. All values are preset and can be changed in the complete operating menu.
The controller is delivered with a restricted operating menu so that the D1C controller can be used
effectively in many applications from the very onset. If adaptations prove to be necessary, all relevant
parameters can then be accessed by switching over to the complete operating menu (see “General
settings”).
4.2 Access Code
Access to the setting menu can be prevented by setting up an access code. The D1C controller is supplied
with the access code 5000 which permits free access to the setting menu. The calibration menu remains
freely accessible even if access to the setting menu is blocked by the code.
4.3 Control
The D1C can operate as a proportional controller or as a PID controller - depending on the device version
(see identity code) and the setting.
The controlled variable is recalculated once a second. Control procedures which require rapid correction of
setpoint deviations (less than approx. 30 seconds) cannot be processed with this controller. The cycle
times must be taken into consideration when activating solenoid valves (pulse length) in the same way as
their running times when activating servomotors (3-point).
Via the control input pause, the control function (selection of controlled variable) can be switched off. The
calculation of the controlled variable starts again after cessation of "pause".
4.4 Feed Forward Control
The D1C controller can process a signal of a feed forward control. Depending on the device version (see
identity code) and the setting, this signal can be obtained in any form of a 0–20 mA or 4–20 mA signal or as
a digital contact signal with the maximum frequencies 10 Hz or 500 Hz.
This signal can be used, for example, for flow-proportional metering (multiplicative effect) or feedforward-
dependent basic load metering (additive effect). The result of control variable calculation from the
proportional or PID control is multiplied by or added to the feedforward signal. A multiplicative feedforward
variable at the level of the set rated value carries over the calculated control variable unchanged into the
controlled variable:
Controlled variable = Feedforward variable/rated value x calculated control variable
During start-up, the zero point has to be checked. The multiplicative feed forward control is not designed
for switching off permanently the actuating variable (signal ≈0).
An additive feedforward variable at the level of the rated value results in maximum controlled variable:
Controlled variable (max. 100 %) = Feedforward variable/rated value x max. controlled variable +
calculated control variable
4.5 Error Messages
Error messages and information are indicated on the bottom line in the permanent display 1. Errors to be
acknowledged (acknowledgement switches off the alarm relay) are indicated by the " ". Errors/notes
which still apply after acknowledgement are indicated alternately. Faults which are rectified of their own
accord due to changed operating situations are removed from the permanent display without the need for
acknowledgement.
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr5

6
The display of the DULCOMETER®D1C controller uses the following symbols:
Description Comment Symbol
Limit value transgression Symbol
Relay 1, upper left
Symbol
Relay 1, lower left
Symbol
Relay 2, upper right
Symbol
Relay 2, lower right
Metering pump 1 Symbol
Control off left
Symbol
Control on left
Metering pump 2 Symbol
Control off right
Symbol
Control on right
Solenoid valve 1 Symbol
Control off left
Symbol
Control on left
Solenoid valve 2 Symbol
Control off right
Symbol
Control on right
Servomotor
Control, open relay
Control, close relay
Without control
The bar increases
Position feedback from left to right
during opening
Stop button pressed
Manual metering
Fault
5Display Symbols
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr6

7
NOTE
Access to the setting menus can be barred with the access code!
The number and scope of setting menus depends on the device version!
If the access code is selected correctly in a setting menu, the following setting menus are also
accessible!
If within a period of 10 minutes no button is pushed, the unit automatically branches back from the
calibrating menu or a setting menu to the permanent display 1.
6Operation diagram
D1C2-mA-008-GB
CHANGE from selection to selection
Change numbers or
settings of selection
Variables flash
ENTER and save setting,
continue to next menu
BRANCH BACK without
saving setting
BRANCH BACK to
start of setting
Text 1
Text 2
Selection 1
Selection 2
Text 1
Text 2
Selection 1
Selection 2
Calibration
notes
Access code, correct
Parameter
setting
Permanent
display 1
Permanent
display 2
Calibration
menu
Various
Access code
Setting menus
The various menus are selected with
the CHANGE button
The menu is started with
the ENTER button
BRANCH BACK to permanent display
or to relevant setting menu
D1C2-mA-007-GB
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr7

8
7Restricted Operating Menu / Layout
The restricted operating menu permits simple operation of the most important parameters. The following
overview shows the settings which can be selected:
control
current regulat.
value: 30 %
control
current regulat.
30 %
value:
50 %
0 s
Ti =
Td =
xp =
0 s
10 %
xp = 10 %
30 %
15 %
DxSxxxxxxxxxx
D1C-B1 FW-5.00 =
=
5000
30 %
28 %
limits
setting ?
control
settings ?
Only with control
control
positive
regulated value:
negative
control
current regulat.
value:
normal
Control with dead zone
For normal control
PID control
Proportional control
setpoint
setpoint 2 upper ctrl. parameter
setpoint 1 lower
ctrl. parameter
manual dosing
regulated range
general setting
information ident-code: D1CA
software version
alarm relay access c.:
operating menu:
active english
restricted
Permanent display 1
w:
mea val. Permanent display 2
only with control
(w = setpoint)
fd. fwd.:
reg. val.:
Positive values of setting variable:
Negative values of setting variable:
12.3 %
50 %
70 %
59 %
100 %
calibration
zero-p.:
slope:
4.00 mA calibration
zero-p.:
slope:
4.00 mA
12.3
%
calibration
meas. value
14.5 % 100 %
with dead zone
manual
Setting in
complete
operating
menu
Manual control
Number and scope of
setting menus depends
on the device.
Access to setting
menus con be blocked
with access code.
26.0 %
limit 1 lower
30.0 %
limit 2 upper
or
or
D1C2-mA-010-GB
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr8

9
Calibration of the standard signal (zero-point calibration)
The D1C sets the control output to “0” during the calibration procedure. Exception: When a basic load or a
manual control variable is set the corresponding parameter is retained during calibration. The standard
signals outputs mA (measured value) are frozen. The measured value frozen at the start of calibration is the
proposed value. This value is adjustable (arrow buttons!). Calibration is possible only when the value is
≥2 % of the measuring range. Following successful calibration, all troubleshooting procedures relating to
the measured value are restarted.
IMPORTANT
The measuring range of the sensor must agree with the set measuring range.
The unit of measure must be set prior to calibration (see Page 14)!
Restricted Operating Menu / Description
D1C2-mA-011-GB
Permanent display 1
w:
mea val.
Permanent display 2
only with control
(w = setpoint)
fd. fwd.:
reg. val.:
Positive values of setting variable:
Negative values of setting variable:
12.3 %
50 %
70 %
59 %
12.3
%
100 %
calibration
zero-p.:
slope:
4.00 mA calibration
zero-p.:
slope:
4.00 mA
calibration
meas. value
14.5 % 100 %
D1C2-mA-029-GB
Access to all setting menus can be blocked with an access code !
Permanent display 1
Possible values
Initial value Increment Lower value Upper value Remarks
Measured value 0.1 % -5 % 105 %
0.01 mA -1.00 mA 21.00 mA
0.01 m 0 m 31.50 m 30.00 m
0.1 % 0 % 105 % 100 %
0.001 bar 0 bar 1.050 bar 1.000 bar
0.001 bar 0 bar 5.250 bar 5.000 bar
0.01 bar 0 bar 10.50 bar 10.00 bar
0.1 bar 0 bar 105 bar 100.0 bar
0.1 psi 0 psi 105 psi 100 psi
1 psi 0 psi 1050 psi 1000 psi
0.001 m
3
/h 0 m
3
/h 9.999 m
3
/h 9.999 m
3
/h
0.1 m
3
/h 0 m
3
/h 105 m
3
/h 100 m
3
/h
1 m
3
/h 0 m
3
/h 1050 m
3
/h 1000 m
3
/h
0.1 gal/h 0 gal/h 105 gal/h 100 gal/h
1 gal/h 0 gal/h 1050 gal/h 1000 gal/h
1 ppm 0 ppm 1050 ppm 1000 ppm
0.1 %RH 0 %RH 105 %RH 100 %RH
0.01 mA 0/4 mA 21 mA 20 mA
0.1 % 0 % 105 % 100 %
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr9

10
Restricted Operating Menu / Description
Limit values
Possible values
Initial value Increment Lower value Upper value Remarks
Type of limit trans- upper Limit transgression
gression Limit 1: lower lower when exceeding or
Limit 2: upper off* dropping below value
*only with limit value relay
Limit value Limit 1: 0 % 0.1 % -5 % 105 % Measuring unit %
Limit 2: 100 % 0.1 % -5 % 105 %
Limit 1: 0.00 mA 0.01 mA -1.00 mA 21 mA Measuring unit mA
Limit 2: 20.00 mA 0.01 mA -1.00 mA 21 mA
Control
0 s
Control manual
control
current regulat.
value: -30 %
control
current regulat.
-30 %
value:
D1C2-mA-015-GB
Ti =
Td =
xp =
0 s
10 %
xp = 10 %
-30 %
15 %
Access to all setting menus can be blocked with an access code !
Only with control
Note: The controlled variable is recalculated every second. Only
suitable for processes with time constants greater than 30 s !
control
settings ? control
regulated value:
control
current regulat.
value:
Control with dead zone
For normal control
PID control
Proportional control
setpoint
setpoint 2 upper ctrl. parameter
setpoint 1 lower
ctrl. parameter
manual dosing
regulated range
50 %
30 %
28 %
positive
negative
normal
with dead zone
manual
Setting in
complete
operating
menu
or
or
Positive values of setting variable:
Negative values of setting variable:
Access to all setting menus can be blocked with an access code !
limits
setting ? limit 1 lower
limit 2 upper
30.0 %
26.0 %
D1C2-mA-014-GB
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr10

11
Restricted Operating Menu / Description
Possible values
Initial value Increment Lower value Upper value Remarks
Setpoint 50 % 0.1 % -5.0 % 105 % Measuring unit: %
10.00 mA 0.01 mA -1.00 mA 21 mA Measuring unit: mA
2 setpoints necessary
for control with dead zone.
Setpoint 1 ≤setpoint 2
Control parameter xp 10 % 1 % 1 % 500 % xp referred to measuring
Control parameter Ti off 1 s 1 s 9999 s range
Control parameter Td off 1 s 1 s 2500 s Function off = 0 s
Manual metering 0 % 1 % -100 % +100 % Function off = 0 s
General settings
D1C2-mA-016-GB
DxSxxxxxxxxxx
D1C-B1 FW-5.00 =
=
5000
general setting
information ident-code: D1CA
software version
alarm relay access c.:
operating menu:
active
english
restricted
Access to all setting menus can be blocked with an access code !
Possible values
Initial value Increment Lower value Upper value Remarks
Alarm relay active active
not active
Access code 5000 1 1 9999
Language as per identity as per identity
code code
Operating menu restricted restricted
complete
Abbreviation for control variables:
xp= 100 %/Kp (inverse proportional coefficient)
Ti= I controller integration time [s]
Td= D controller differential time [s]
Access Code
Access to the setting menu can be prevented by setting up an access code. The DULCOMETER®D1C
controller is supplied with the access code 5000 which permits free access to the setting menu. The
calibration menu remains freely accessible even when access to the setting menu is blocked by the code.
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr11

12
8Complete Operating Menu / Overview
All parameters of the controller can be set in the complete operating menu (access see previous page). The
following overview shows the settings which can be selected:
4.00 mA
D1C2-mA-017-GB
w:
Permanent display 1
mea val.
Permanent display 2
only with control
(w = setpoint)
fd. fwd.:
reg. val.:
Only with limit relay,
solenoid valve relay
or servomotor
Only with servomotor
Only with control
Only with pumps
measured value
setting ?
measuring unit
setting ?
pumps
setting ?
relays
setting ?
limits
setting ?
servomotor
setting ?
control
setting ?
Access to setting menus can
be blocked with access code.
12.3 %
50 %
70 %
59 %
100 %
calibration
zero-p.:
slope:
12.3
%
Only with feed
forward control
feed forward ctrl.
setting ?
signal output 2
mA setting ?
general setting
information
Only with 2 standard
signal outputs
Number and scope of setting menus
depends on the device.
signal output 1
mA setting ?
Only with standard
signal output
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr12

13
Complete Operating Menu / Description
Calibration of the standard signal (two-point calibration)
The D1C sets the control output to “0” during the calibration procedure. Exception: When a basic load or a
manual control variable is set the corresponding parameter is retained during calibration. The standard
signals outputs mA (measured value) are frozen. The measured value frozen at the start of calibration is the
proposed value. This value is adjustable (arrow buttons!). Calibration is possible only when the value is
≥2 % of the measuring range. Following successful calibration, all troubleshooting procedures relating to
the measured value are restarted.
IMPORTANT
The measuring range of the sensor must agree with the set measuring range.
The unit of measure must be set prior to calibration (see Page 14)!
Possible values
Initial value Increment Lower value Upper value Remarks
Measured 0.1 % -5 % 105 % *for possible measuring
value* 0.01 mA -1.00 mA 21.00 mA values see page 9
D1C2-mA-018-GB
Permanent display 1
w:
mea val.
Permanent display 2
only with control
(w = setpoint)
fd. fwd.:
reg. val.:
12.3 %
50 %
70 %
59 %
12.3
%
Positive values of setting variable:
Negative values of setting variable:
D1C2-mA-030-GB
value1:
value2:
calibration calibration
value accept ?
meas. value 1
14.5 %
value1:
value2:
calibration calibration
value accept ?
meas. value 2
76.6 %
14.5 %
76.6 %
14.5 %
calibration
slope:
100 %
4.00 mA
zero-pt.:
slope:
zero-pt.:
calibration
100 %
4.00 mA
Permanent display 1
Error message Condition Effect
Value distance too small ∆value > 5.0 % Measured value deleted
∆value > 1.00 mA Repeat calibration of measuring point
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr13

14
Complete Operating Menu / Description
Measuring variable
Access to all setting menus can be blocked with an access code !
measuring unit
setting ?
Permanent display 1
D1C2-mA-019-GB
measuring value
measuring signal
measuring unit:
0...100 %
Possible values
Initial value Increment Lower value Upper value Remarks
Measuring variable Measurement Level
signal Pressure
Water flow rate
Turbidity
Humidity
Measurement
signal
Measuring unit 0 - 100 % 0 - 30 m Level
0 - 100 %
0 - 1.000 bar Pressure
0 - 5.000 bar
0 - 10.00 bar
0 - 100.0 bar
0 - 100.0 psi
0 - 1000 psi
0 - 9.999 m
3
/h Water flow rate
0 - 100.0 m
3
/h
0 - 1000 m
3
/h
0 - 100.0 gal/h
0 - 1000 gal/h
0 - 1000 ppm Turbidity
0 - 100.0 %RH Humidity
0/4 - 20 mA Measurement signal
0 - 100 %
IMPORTANT
The sensor must be recalibrated and the settings in all the menus checked after changing
the assigned range!
IMPORTANT
The setpoint and limit values are changed over to the corresponding initial values when the
measuring range is changed! Check the settings in all menus!
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr14

15
Complete Operating Menu / Description
Measured value
IMPORTANT
When changing the range adjustment, the sensor must be newly calibrated and the
adjustments in all menus have to be checked!
Pumps
Possible values
Initial value Increment Lower value Upper value Remarks
Max. stroke/minute of 180 1 1 500 off = 0 strokes/min
pumps 1 and 2
D1C2-mA-020-GB
4 mA 20 mA =
Access to all setting menus can be blocked with an access code !
Standard signal input mA
measured value
range adjustment measured value
range adjustment
measured value
checkout time
measured value
off
measured value
setting ?
= 0.0 % 100.0 %
D1C2-mA-022-GB
180
180
Access to all setting menus can be blocked with an access code !
Only with pumps for control
pumps
setting ?
dosing pump max.
pump1:
pump2:
control
pump1
pump2 pulse/minute
Measured value checkout time
IMPORTANT
This function may not be activated for applications in which it can be assumed that the
measured value will not change.
This function tests whether the measured value changes from that of the sensor (at the measured value input)
within the “Measured value checkout time”. It is assumed that it will do so for an intact sensor.
If the measuring value does not change during this checkout time, the DULCOMETER®D1C sets the
control variable to “0” and the alarm relay drops out. The LCD display shows e.g. the message “limit 1/2”.
Possible values
Initial value Increment Lower value Upper value Remarks
Standard signal input 4 mA 0 mA
lower signal limit 4 mA
Allocated measuring
range* 0-100.0 % 0.1 % -5 % 105 % Measurement signal
0-20.00 mA 0.01 mA -1.00 mA 21.00 mA *for other measuring ranges
see page 9
Checkout time off 1 s 1 s 9999 s
Constant measurement signal
results in message and alarm.
Function off = 0 s
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr15

16
Possible values
Initial value Increment Lower value Upper value Remarks
Relay adjustment as per identity * At “limit value”,
Relay 1 code Solenoid valve 1 the relays remain active
Limit value 1* even in the case of fault.
Actuator 1
Timer 1
Servomotor Only with servomotor
off
Relay 2 Solenoid valve 2
Limit value 2*
Actuator 2
Timer 2
off
Period 10 s 1 s 10 s 9999 s for solenoid valve
min. time 1 s 1 s 1 s period/2 for solenoid valve
Set here the smallest
permitted operating factor
of the connected device.
Period off 1 h 1 h/off 240 h for timer
t on 1 min 1 min 1 min 60 min for timer
relays
setting ? timing 1
relay 1
period 1 h
t on: 1 min
timing 2
relay 2
period 1 h
t on: 1 min
with timer
relay adjustment
relay 1: timer
relay 2: timer
D1C2-mA-033-GB
Complete Operating Menu / Description
Relay for power control
Only with limit relay, solenoid valve relay or servomotor
relays
setting ?
relay adjustment
relay1:
relay2: SV1
SV2
solenoid valve 2solenoid valve 1
period
min. time
10 s
1 s period
min. time
10 s
1 s
Access to all setting menus can be blocked with an access code !
D1C2-mA-023-GB
NOTE
The limit value relay can be defined in such a way as to respond as a control element, i.e. if a
limit value relay closes a circuit, it opens when a pause contact is activated and/or for a
subsequent delay period td(if tdis set to > 0 min in “General settings”).
Cycle
Timer relay
off
on
t
ton
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr16

17
Complete Operating Menu / Description
IMPORTANT
The timer will reset in the event of a power failure.
At the end of the (timer) cycle time the DULCOMETER®D1C closes the assigned relay for the duration of
“t on” (timer). “Pause” interrupts the timer.
When the clock is shown in the LC display the timer can be reset to the start of the cycle at precisely this
point using the enter button.
The % figure in the LC display indicates the progress of the current cycle.
Timer relays may be used, e.g. for shock metering or sensor cleaning.
Cycle
min. time
Solenoid
valve
off
on
t
ton
off
on
t
ton
Cycle
Control
variable: 50 %
ton
Cycle = 0.50
Control
variable: 80 %
ton
Cycle = 0.80
The switching time of the DULCOMETER®D1C (solenoid valve) depends on the actuating variable and the
“min. time” (smallest permitted operating factor of the connected device).The actuating variable determines
the ratio ton/cycle and thus the switching times (see fig. above).
The “min. time” influences the switching times in two situations:
a) theoretical switching time < min. time:
off
on
t
off
on
t
Cycle Cycle Cycle
Cycle Cycle Cycle
min. time
min. time
theoretical
actual
The DULCOMETER®D1C does not switch for a certain number of cycles until the sum of the theoretical
switching times exceeds the “min. time”. Then the DULCOMETER®D1C switches for the duration of this total
time .
b) theoretical switching time > (cycle - min. time) and calculated switching time < cycle
Cycle
min. time
off
on
t
off
on
t
Cycle Cycle
Cycle Cycle Cycle
min. time
theoretical
actual
The DULCOMETER®D1C does not deactivate for a certain number of cycles until the differences between
cycle and theoretical switching time exceed the “min. time”.
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr17

18
limits
setting?
relay 1: LV1
- active closed
∆t on: 0 s
∆t off: 0 s
relay 2: LV2
- active closed
∆t on: 0 s
∆t off: 0 s
limit 2 upper
30 %
limit 1 lower
28 %
limits fault
hyst.: 0.2 %
∆t on: off
control: on
Access to all setting menus can be blocked with an access code !
D1C2-mA-034-GB
Complete Operating Menu / Description
If the limit transgression is applied longer than the “delay time limit values”, an error message is triggered
and the alarm relay drops out; the control procedure stops if “control” is additionally set to “off”.
Possible values
Initial value Increment Lower value Upper value Remarks
Type of limit trans- Limit transgression when
gression Limit 1: lower upper exceeding or dropping
Limit 2: upper lower below value
off* *only with limit value relay
Limit value Limit 1: 0 % 0.1 % -5 % 105 % Measuring unit percent
Limit 2: 100 % 0.1 % -5 % 105 %
Limit 1: 0 mA 0.01 mA -1.00 mA 21 mA Measuring unit milliampere
Limit 2: 20 mA 0.01 mA -1.00 mA 21 mA
Hysteresis limits 0.2 % 0.1 % 0.1 % 105 % Active in “cancellation of
0.04 mA 0.01 mA 0.02 mA 21.00 mA limit transgression” direction
Checkout time limits off 1 s 1 s 9999 s Results in message and
alarm. Off = 0 s:
Function switched off,
no message, no alarm
Control on on
off
Switching direction
Limit value 1 active closed active closed Acts as N/O
Limit value 2 active open Acts as N/C
Switch-on delay ∆t on 0 s 1 s 0 s 9999 s
Switch-off delay ∆t off 0 s 1 s 0 s 9999 s
Limit values
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr18

19
Complete Operating Menu / Description
Servomotor
The operating range is defined by the total resistance range of the feedback potentiometer. The maximum
limit of the range actually used is set by defining the control range.
IMPORTANT
•Activation of the servomotor must be carried out with the same meticulous care as
taken when calibrating a measuring sensor.
•To ensure correct operation, the activation time of the actuator used should not be
less than 25 seconds for the control range from 0…100 %!
Access to all setting menus can be blocked with an access code !
servomotor
setting ?
dosing:
control range:
0 % to
operating range
100 %
Only with servomotor
current position:
servomotor
open ? servomotor
please wait !
open
servomotor
please wait !
close
servomotor
value take over ?
opened !
servomotor
value take over ?
closed !
servomotor
close ?
servomotor
current position:
OK
= automatic timing
D1C2-mA-025-GB
servomotor
setting
NOTE
•When the wide bar is as right as it will go, the stroke adjustment motor is fully open.
•The permanent display shows to what degree the motor has opened in % (the greater the
percentage, the more open the servomotor.)
Possible values
Initial value Increment Lower value Upper value Remarks
Servomotor Setting Setting
ok
off
Control direction
Control range 100 % 1 % 10 % 100 % in % of
operating range
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr19

20
Complete Operating Menu / Description
Abbreviation for control variables:
xp= 100 %/Kp (inverse proportional coefficient)
Ti= I controller integration time [s]
Td= D controller differential time [s]
Possible values
Initial value Increment Lower value Upper value Remarks
Control normal normal When controlling with dead zone,
with dead zone the feed forward control is not
manual used for measured values within
the dead zone.
Setpoint 50 % 0.1 % -5.0 % 105 % Measuring unit: %
10.00 mA 0.01 mA -1.00 mA 21 mA Measuring unit: mA
2 setpoints necessary for
control with dead zone.
Setpoint 1 ≤setpoint 2
Control parameter xp 10 % 1 % 1 % 500 % xp referred to measuring range
Control parameter Ti off 1 s 1 s 9999 s Function off = 0 s
Control parameter Td off 1 s 1 s 2500 s Function off = 0 s
Additional load 0 % 1 % -100 % +100 %
Manual metering 0 % 1 % -100 % +100 %
Control
D1C2-mA-026-GB
0 s
Ti =
Td =
xp =
0 s
10 %
xp = 10 %
30 %
15 %
Access to all setting menus can be blocked with an access code !
Only with control
Note: The controlled variable is recalculated every second. Only
suitable for processes with time constants greater than 30 s !
control
settings ? control
regulated value:
control
current regulat.
value:
Control with dead zone
For normal control
PID control
Proportional control
setpoint
setpoint 2 upper ctrl. parameter
Setpoint 1 lower
ctrl. parameter
manual dosing
regulated range
50 %
30 %
28 %
positive
negative
normal
10 %
add. basic load
regulated range
Control manual
Positive values of setting variable:
Negative values of setting variable:
BA_DM_147_04_07_GB.p65 11.04.2007, 11:02 Uhr20