ProMinent DULCOMETER D1C User manual

START
STOP
DULCOMETER
auto.: 33.2 °C
0
.95
ppm
Fluoride
Operating Instructions
DULCOMETER®D1C
Part 2: Adjustment and Operation,
Measured Variable Fluoride
Part No. 987306 ProMinent Dosiertechnik GmbH ·69123 Heidelberg ·Germany BA DM 150 05/07 GB
ProMinent®
D1C2-001 D
Please completely read through operating instructions! ·Do not discard!
The warranty shall be invalidated by damage caused by operating errors!
Type D Type W
Please enter the identity code of your device here!
D1C A ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
STOP
DULCOMETER
START
auto.: 33.2 °C
0
.95
ppm
Fluoride
BA_DM_150_05_07_GB.p65 15.05.2007, 11:41 Uhr1

2
Please enter the identity code of your device here!
1 Device Identification / Identity Code
D1C A
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 control panel installation)
3100 V 50/60 Hz (only with control panel installation)
424 V AC/DC
Measured variable
FFluoride (0.02 ... 10.00 ppm)
Connection of measured variable
1Terminal, standard signal 0/4-20 mA
Correction variable
0None
2Temperature via terminal
3Temperature via standard signal
4Manual temperature entry
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
3standard signal 0/4-20 mA correction variable
42standard signal 0/4-20 mA output, freely programmable
Power control
GAlarm and 2 limit value relays/timer
MAlarm and 2 solenoid valve relays
RAlarm relay and servomotor with feedback
Pump control
0None
2Two pumps
Control characteristic
0None
1Proportional control
2PID control
Log output
0None
Language
DGerman
EEnglish
FFrench
IItalian
NDutch
SSpanish
PPolish
ASwedish
BPortuguese
UHungarian
GCzech
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2General User Information
Page
1Device Identification / Identity Code ................................................................................................... 2
2General User Information ...................................................................................................................... 3
3Device Overview / Controls................................................................................................................... 4
4Functional Description ......................................................................................................................... 5
5Display Symbols ................................................................................................................................... 6
6Operation .............................................................................................................................................. 7
7Restricted Operating Menu ................................................................................................................... 8
General Layout ................................................................................................................................. 8
Description ....................................................................................................................................... 9
8Complete Operating Menu .................................................................................................................. 13
Overview ......................................................................................................................................... 13
Description ..................................................................................................................................... 14
9Faults / Notes / Troubleshooting ........................................................................................................ 27
General User Information
These operating instructions 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.
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4
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.
UP button
To increase a displayed numerical value
and to change variables (flashing
display)
BRANCH BACK button
Back to permanent display or to start
of relevant setting menu.
DOWN button
To decrease a displayed numerical
value and to change variables (flashing
display).
3Device Overview / Controls
D1C2-002 GB
STOP
START
®
DULCOMETER®
STOP
START
Display field
Measured variable
Fluoride
Graphic display
"Start/stop"
Button
"Enter"
Button
"Up"
Button
"Change"
Button
"Down"
Button
"Branch back"
Button
Fluoride
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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 DULCOMETER®D1C controller!
4.1 Operating Menu
The DULCOMETER®D1C controller permits settings to be made in two different menus. 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 - dependent 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.
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).
This signal can be used, for example, for flow-proportional metering (multiplicative effect) or feed forward-
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 feed forward signal. A multiplicative feed forward
variable at the level of the set rated value carries over the calculated control variable unchanged into the
controlled variable:
Controlled variable = Feed forward variable/rated value x calculated control variable
An additive feed forward variable at the level of the rated value results in maximum controlled variable:
Controlled variable (max. 100 %) = Feed forward variable/rated value x max. controlled variable +
calculated control variable
4.5 Error Messages
Error messages and information are indicated in 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. During correction variable processing
(temperature for correction of fluoride value), the value is indicated in the same line as the error/note. Faults
which are rectified of their own accord due to changed operating situations are removed from the
permanent display without the need for acknowledgement.
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5Display Symbols
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 (Fluoride) Symbol
Control off left
Symbol
Control on left
Metering pump 2 (deFluor) Symbol
Control off right
Symbol
Controll on right
Solenoid valve 1 (Fluoride) Symbol
Controll off left
Symbol
Controll on left
Solenoid valve 2 (deFluor) Symbol
Controll off right
Symbol
Control on right
Servomotor
Control, open relay
Control, close relay
Without control
The bar
Position feedback increases from left to right
during opening
Stop button pressed
Manual metering
Fault
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Calibration
notes
Access code, correct
Parameter
setting
Permanent
display 1
Permanent
display 2
Calibration
menu
Various
Access code
Setting menus
D1C2-007-GB
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
IMPORTANT
Access to the setting menus can be barred with the access code!
The number and scope of setting menus is dependent on the device version!
If the access code is selected correctly in a setting menu, then 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
D1C2-008-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
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7Restricted Operating Menu / Layout
calibration F
1.00ppm =125.0 mV
slope
59.2 mV/dec
Positive values of setting variable: Fluoride
negative values of setting variable: deFluor
Permanent display 2
only with control
(w = setpoint)
Temperature indication only with correction variable
Fluoride signal in mV (changing display)
0.95
D1C2-010-GB
ident-code: D1CA
DxFxxxxxxxxxx
Software version
D1C-C1 FW-5.00
manual dosing
-15 %
regulated range
control
manual
current regulat.
value -30 %
calibration F
1.00 ppm=125.0 mV
slope
59.2 mV/dec
calibration F
buffer: 1.00ppm
temp.: 33.0°C
calibration F
calib. active
please wait !
125.0 mV 33.0°C
calibration F
sensor in buffer
value: 1.00 ppm
125.0 mV 33.0°C
mea. val. 0.95 ppm
fd. fwd.: 70 %
reg. val.: -59 %
w= 0.90 ppm
Permanent display 1
auto.: 33.2°C
ppm
Temperature setting and specification only with correction value
For normal control Proportional control
Only with control
limits
setting ?
control
setting ? control regulated value:
positive fluorid
negative defluor
control
normal
current regulat.
value: -30 %
control
with dead zone
current regulat.
value: -30 %
setpoint
1.50 ppm
setpoint 2 upper
1.00 ppm
setpoint 1 lower
1.00 ppm
ctrl. parameter
xp = 10 %
ctrl. parameter
xp = 10 %
Ti = 0 s
Td = 0 s
Control with dead zone PID control
general setting
information
Setting in
complete
operating
menu
For manual control
alarm relay
active access c.: 5000 operating menu:
= english
= restricted
or
or
limit 1 lower
0.50 ppm
limit 2 upper
1.50 ppm
Number and scope of setting menus
is dependent on the device.
Access to setting menus can
be blocked with access code.
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D1C2-012-GB
Permanent display 1
= automatic timing
calibration F
1.00ppm = 125.0 mV
slope
59.2 mV/dec
calibration F
1.00ppm = 125.0mV
slope
59.2 mV/dec
calibration F
buffer: 1.00ppm
temp.: 33.0°C
calibration F
calib. active
please wait !
125.0 mV 33.0°C
calibration F
sensor in buffer
value: 1.00 ppm
125.0 mV 33.0°C
Temperature setting and specification only with correction value
Temperature indication only with correction variable
Fluoride signal in mV (changing display)
D1C2-011-GB
Positive values of setting variable: Fluoride
negative values of setting variable: deFluor
Permanent display 2
only with control
(w = setpoint)
0.95
mea. val. 0.95 ppm
fd. fwd.: 70 %
reg. val.: -59 %
w= 0.90 ppm
Permanent display 1
auto.: 33.2°C
ppm
Calibrating the Fluoride sensor
Immerse the fluoride sensor (and the reference electrode if applicable) in the calibration buffer. Once the mV
signal which is visible in the changing display is stable (fluctuation < 0.05 mV/min), go to settings menu
“Calibration F” and press the “Enter” key. The flashing temperature display in the following menu must be
the temperature at which calibration is carried out. Press the “Enter” key again to start calibration.
When the next menu option appears, the most recently calibrated fluoride concentration is suggested in the
“Buffer” menu option (limits 0.25 – 1.25 ppm); now enter the fluoride content of the calibration buffer (arrow
keys) and confirm 2x. The calibration is now complete.
Restricted Operating Menu / Description
Possible values
Initial value Increment Lower value Upper value Remarks
Calibration temperature Measured 0.1 °C0°C100 °C
temperature value
Fluoride concentration Error message if the
of the buffer concentration difference is
(measuring range 10 ppm) Last calibration 0.01 ppm 0.25 ppm 1.25 ppm too small (<0.5 ppm F
–
)
value entered
(measuring range 99.99 ppm) Last calibration 0.01 ppm 0.75 ppm 12.50 ppm
value entered
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Error message Condition Effect
Potential low* < 90.0 mV Back to permanent display: basic load metering
Potential high* > 150.0 mV "
Buffer missing "
Measured value fluoride ∆U > 0.3 mV "
unstable after t > 600 s
Restricted Operating Menu / Description
D1C2-014-GB
limits
setting ?
Access to all setting menus can be blocked with an access code !
limit 1 lower
0.50 ppm
limit 2 upper
1.50 ppm
Limits
Possible values
Initial value Increment Lower value Upper value Remarks
Type of limit trans- upper Limit transgression
gression Limit 1: lower lower for exceeding or
Limit 2: upper off* dropping below limit
Limit value Limit 1: 0.50 ppm 0.01 ppm 0.00 ppm 11.00 ppm *only with limit value relay
Limit 2: 1.50 ppm 0.01 ppm 0.00 ppm 11.00 ppm
*For the measuring range 0...99.99 ppm, the plausibility statement is deactivated!
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Possible values
Initial value Increment Lower value Upper value Remarks
Setpoint 2 setpoints necessary
measuring range: 10 ppm 1.00 ppm 0.01 ppm 0.00 ppm 10.00 ppm for control with dead zone.
measuring range: 99.99 ppm 10.00 ppm 0.01 ppm 0.00 ppm 99.99 ppm Setpoint 1 > setpoint 2
Control parameter xp 10 % 1 % 1 % 500 % xp referred to 10.00 ppm
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
Manual metering 0 % 1 % -100 % +100 %
Restricted Operating Menu / Description
Control
Positive values of setting variable: Fluoride
negative values of setting variable: deFluor
D1C2-015-GB
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 with dead zone
For normal control
PID control
Proportional control
setpoint
setpoint 2 upper ctrl. parameter
Ti =
Td =
xp =
0 s
setpoint 1 lower 10 %
ctrl. parameter
xp = 10 %
control
setting ? control
positive fluorid
regulated value:
negative defluor
manual dosing
control
current regulat.
variable: -30 %
normal
-15 %
regulated range
control
current regulat.
value: -30 %
with dead zone
control
current regulat.
value: -30 %
manual
0 s
1.50 ppm
1.00 ppm
1.00 ppm
For manual control
or
or
Setting in
complete
operating
menu
Abbreviation for control variables:
xp= 100 %/Kp (inverse proportional co-efficient)
Ti= I controller integration time [s]
Td= D controller differential time [s]
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12
D1C2-016-GB
Access to all setting menus can be blocked with an access code !
general setting
information ident-code: D1CA
software version
DxFxxxxxxxxxx
D1C-C1 FW-5.00
alarm relay
=
=
operating menu:
active english
restriced
access c.: 5000
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
Restricted Operating Menu / Description
General Settings
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 if access to the setting menu is blocked by the code.
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13
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:
control
setting ?
Only with control
servomotor
setting ?
limits
setting ?
relays
setting ?
pumps
setting ?
correction value
setting?
measured value
setting ?
calibration F
setting ?
Only with correction
variable
Only with limit relay,
solenoid valve relay
or servomotor
Only with
servomotor
Only with pumps
Number and scope of setting menus
is dependent on the device.
Access to setting menus can
be blocked with access code.
calibration F
1.00 ppm=125.0 mV
slope
59.2 mV/dec
33.2 °C
pH
7.20
Permanent display 2
only with control
(w = setpoint)
general setting
information
signal output 2
mA setting ?
signal output 1
mA setting ?
D1C2-017-GB
Only with 2 standard
signal outputs
Only with standard
signal output
feed forward ctrl.:
setting ?
Onyl with feed
forward control
Temperature indication only with correction variable
Fluoride signal in mV (changing display)
Permanent display 1
0.95
auto.: 33.2°C
ppm
mea. val. 0.95 ppm
fd. fwd.: 70 %
reg. val.: -59 %
w= 0.90 ppm
Positive values of setting variable: Fluoride
negative values of setting variable: deFluor
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14
Complete Operating Menu / Description
D1C2-019-GB
= automatic timing
calibration F
1.00ppm = 125.0 mV
slope
59.2 mV/dec
calibration F
buffer: 1.00ppm
temp.: 33.0°C
calibration F
calib. active
please wait !
125.0 mV 33.0°C
calibration F
sensor in buffer
value: 1.00 ppm
125.0 mV 33.0°C
Temperature setting and specification only with correction value
calibration F
1.00ppm = 125.0mV
slope
59.2 mV/dec
calibration F
buffer1: 1.00ppm
buffer2: 5.00ppm
temp.: 33.0°C
calibration F
calib. 2 active
please wait !
83.6 mV 33.0°C
calibration F
sensor in buf. 2
value: 5.00 ppm
83.6 mV 33.0°C
Permanent display 1
Calibrating the Fluoride sensor
Immerse the fluoride sensor (and the reference electrode if applicable) in calibration buffer 1. Once the mV
signal which is visible in the changing display is stable (fluctuation < 0.05 mV/min), go to setting menu
“Calibration F” and press the “Enter” key. The flashing temperature display in the following menu must be
the temperature at which calibration is carried out. Press the “Enter” key again to start calibration for the
first concentration value.
When the next menu option appears, the last calibrated fluoride concentration will be suggested in the
“Buffer 1” menu (limits 0.25 - 1.25 ppm); enter the fluoride content of the calibration buffer (arrow keys) and
confirm.
Immerse the fluoride sensor (and the reference electrode if applicable) in calibration buffer 2. Once the
measurement signal is stable (fluctuation < 0.05 mV/min), press the “Enter” key.
When the next menu option appears, the last calibrated fluoride concentration will be suggested in the
“Buffer 2” menu (limits 1.75 - 10.00 ppm); enter the fluoride content of the calibration buffer 2 (arrow keys)
and confirm 2x. This concludes the calibration.
D1C2-011-GB
ppm
0.95 Temperature indication only with correction variable
Fluoride signal in mV (changing display)
Permanent display 1
auto.: 33.2°C
Permanent display 2
only with control
(w = setpoint)
mea. val. 0.95 ppm
fd. fwd.: 70 %
reg. val.: -59 %
w= 0.90 ppm
Positive values of setting variable: Fluoride
negative values of setting variable: deFluor
Possible values
Initial value Increment Lower value Upper value Remarks
Calibration temperature Measured 0.1 °C0°C100 °C
temperature value
Fluoride concentration Last calibration Error message if the
of the buffer 1 (measuring range 10 ppm) value entered 0.01 ppm 0.25 ppm 1.25 ppm concentration difference
of the buffer 2 (measuring range 10 ppm) 0.01 ppm 1.75 ppm 10.00 ppm is too small (<0.5 ppm F
–
)
of the buffer 1 (measuring range 99.99 ppm) 0.01 ppm 0.75 ppm 12.50 ppm
of the buffer 2 (measuring range 99.99 ppm) 0.01 ppm 17.50 ppm 99.99 ppm
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15
Access to all setting menus can be blocked with an access code !
D1C2-D
calib. values F
setting ? calib. values F
operating point:
1.00 ppm
= 125.0 mV
calib. values F
slope:
59.2 mV/dec
at 25 °C
Complete Operating Menu / Description
Adjust Calibration Value F
Possible values
Initial value Increment Lower value Upper value
Operating point at “1 ppm” 125.0 mV 0.1 mV 0.0 mV 200.0 mV
Slope 59.2 mV/dec 0.1 mV/dec 45.0 mV/dec 65.0 mV/dec
Error message Condition Effect
Potential low* < 90.0 mV Back to permanent display; basic load metering
Potential high* > 150.0 mV "
Buffer 1 missing "
Slope low < 45 mV/dec "
Slope high > 65 mV/dec "
Buffer 2 missing "
Measured value fluoride ∆U > 0.3 mV "
unstable after t > 600 s
*For the measuring range 0...99.99 ppm, the plausibility statement is deactivated!
Measuring Range
Access to all setting menus can be blocked with an access code !
measuring range
setting ?
Permanent display 1
D1C2-030-GB
measuring range
0...10.00 ppm
IMPORTANT
When changing the range assignment, the fluoride sensor has to be calibrated again and the
settings in all menus must be verified!
Possible values
Initial value Increment Lower value Upper value Remarks
Measuring range 0...10 ppm 0...10 ppm
0...99.99 ppm
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16
Possible values
Initial value Increment Lower value Upper value Remarks
Type of temperature as per identity manual Changeover only if specified
compensation code automatic in identity code = automatic
off
Manual temperature 25 °C0.1 °C0°C100 °C
compensation
Complete Operating Menu / Description
Correction Variable
D1C2-021-GB
Access to all setting menus can be blocked with an access code !
Only with correction variable
temperature
correcting value
setting ? manual
33.0°C
correcting value
Possible values
Initial value Increment Lower value Upper value Remarks
Checkout time off 1 s 1 s 9999 s Constant measurement signal
results in message and alarm.
Function off = 0 s
D1C2-020-D
meas. value
setting ? measured value
checkout time
measured value
off
Access to all setting menus can be blocked with an access code !
Measured Value
Measured value control period
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 control period". It is assumed that it will do so for an intact sensor.
If the measuring value does not change during this control time, the DULCOMETER®D1C sets the control
variable to „0“ and the alarm relay drops out. The LCD display shows e.g. the message “check F sensor”.
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17
Relay for power control
D1C2-023-GB
Access to all setting menus can be blocked with an access code !
Only with limit relay, solenoid valve relay or servomotor
relays
setting ?
relay adjustment
relay1:
relay2: limit1
off
solenoid valve 2
defluor
solenoid valve 1
fluoride
period
min. time
10 s
1 s period
min. time
10 s
1 s
Complete Operating Menu / Description
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-Cl-034-GB
Pumps
D1C2-022-GB
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 fluoride
pump2 defluor pulse/minute
180
180
Possible values
Initial value Increment Lower value Upper value Remarks
Max. stroke/minute of 180 1 1 500 off = 1 stroke/min
pumps 1 and 2
Possible values
Initial value Increment Lower value Upper value Remarks
Relay adjustment as per identity
code
Relay 1 Solenoid valve 1 * In the case of “Limit
Limit value 1* value” - relays remain
Actuator 1 active even in the event of
Timer 1 an error.
Servomotor only with servomotor
off
Relay 2 Solenoid valve 2
Limit value 2*
Actuator 2
Timer 2
off
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18
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 240 min for timer
Cycle
Timer relay
off
on
t
ton
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:
Complete Operating Menu / Description
Possible values
Initial value Increment Lower value Upper value Remarks
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”).
BA_DM_150_05_07_GB.p65 15.05.2007, 11:42 Uhr18

19
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”.
Complete Operating Menu / Description
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20
Possible values
Initial value Increment Lower value Upper value Remarks
Type of limit trans- Limit transgression
gression Limit 1: lower upper when exceeding or
Limit 2: upper lower dropping below value
off* *only with limit value relay
Limit value Limit 1: 0.50 ppm 0.01 ppm 0.00 ppm 11.00 ppm Measuring range: 10 ppm
Limit 2: 1.50 ppm 0.01 ppm 0.00 ppm 11.00 ppm Measuring range: 10 ppm
Limit 1: 5.00 ppm 0.01 ppm 0.00 ppm 99.99 ppm Measuring range: 99.99 ppm
Limit 2: 15.00 ppm 0.01 ppm 0.00 ppm 99.99 ppm Measuring range: 99.99 ppm
Hysteresis limits 0.05 ppm 0.01 ppm 0.00 ppm 11.00 ppm Measuring range: 99.99 ppm
0.50 ppm 0.01 ppm 0.00 ppm 99.99 ppm Measuring range: 99.99 ppm
Effective in direction of
cancelling limit trans-
gression.
Checkout time limits off 1 s 1 s 9999 s Results in message
and alarm. off = 1 s:
Function switched off,
no message, no alarm
Control on on
off
Switching direction active closed active closed Acts as N/O
Limit value 1, 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
D1C2-024-GB
Access to all setting menus can be blocked with an access code !
relay 2 limit2
- active closed
∆t on 0 s
∆t off 0 s
limits
setting ?
limit 2 upper
150.0 ppm
limit 1 lower
0.50 ppm
relay 1 limit1
- active closed
∆t on 0 s
∆t off 0 s
limits fault
hyst.: 0.05 ppm
∆t on: off
control: on
Complete Operating Menu / Description
Limits
If the limit is exceeded for longer than the "delay time - limit values" an error message is given, which must
be acknowledged, and the alarm relay circuit is broken. If "control" is also set to "off" the control process
stops.
BA_DM_150_05_07_GB.p65 15.05.2007, 11:42 Uhr20