Grundfos Conex DIS-C User manual

Conex®DIS-C
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS Page
1. Symbols used in this document
2. General information
These installation and operating instructions contain
all information important for users of the
Conex®DIS-C:
• technical data
• instructions on commissioning, use and
maintenance
• safety information.
Should you require further information or should you
encounter problems that are not handled in sufficient
depth in this manual, please contact Grundfos.
We shall be pleased to support you with our
comprehensive know-how in the fields of measuring
and control technology as well as water treatment.
We always welcome suggestions on how to optimise
our installation and operating instructions to satisfy
our customers.
1. Symbols used in this document 2
2. General information 2
3. Description of the device 3
3.1 Assembly 3
3.2 Principles of conductivity measurement 3
4. Applications 4
4.1 Field of application for measurements 4
5. Safety 4
5.1 Obligations of the owner/operations
manager 4
5.2 Avoidance of danger 4
6. Identification 5
6.1 Nameplate 5
6.2 Type key 5
7. Technical data 6
7.1 Versions 6
7.2 General data 6
7.3 Measuring ranges 6
7.4 Dimensional sketches / drilling diagram 7
8. Installation 8
8.1 Transport and storage 8
8.2 Unpacking 8
8.3 Installation requirements 8
8.4 Assembling the Conex® DIS-C housing
for wall mounting 8
8.5 Assembling the Conex® DIS-C-P, CI
housing for installation in control panel 9
9. Commissioning / electrical
connections 9
9.1 Conex® DIS-C conductive, housing for
wall mounting 10
9.2 Conex® DIS-C inductive, housing for
wall mounting 11
9.3 Conex® DIS-C conductive, housing for
installation in control panel 12
9.4 Important instructions for connecting the
device 13
10. Principles of regulatory function 14
10.1 Regulatory behaviour 14
10.2 Limit values 14
10.3 On-off controller with P behaviour 15
10.4 Parameter settings 16
11. Initial operation and settings 17
11.1 Initial steps for operation 17
12. Operation 17
12.1 Device layout for Conex® DIS-C 17
12.2 Menu control 18
12.3 Navigation in the menus 18
12.4 Setup 19
12.5 Relay menu (S1 S2) 23
12.6 Temperature compensation 23
12.7 Displaying / changing code 24
12.8 Controller settings 24
12.9 Alarm value setting A1/A2 25
12.10 Service 26
13. Disposal 26
Warning
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local
regulations and accepted codes of good
practice.
Warning
If these safety instructions are not
observed, it may result in personal injury.
Caution
If these safety instructions are not
observed, it may result in malfunction or
damage to the equipment.
Note
Notes or instructions that make the job
easier and ensure safe operation.

English (GB)
3
3. Description of the device
Fig. 1 Conex®DIS-C for wall mounting
Fig. 2 Conex®DIS-C for installation in control
panel
3.1 Assembly
The complete measuring system comprises:
• the measuring amplifier Conex®DIS-C
• the conductivity measuring cell with temperature
sensor.
3.2 Principles of conductivity
measurement
In metallic conductors, electricity is transported by
freely moving electrons, whereas in electrolytes, the
electrical current is carried by ions.
All water-dissolved components that are in ionogenic
form contribute towards conductivity.
The conductivity is a sum parameter.
Different types of ions vary in their electrical charge
and migration rate. The migration rate is highly
dependent on temperature, which means the
influence of temperature must always be taken into
account when measuring conductivity.
Specific electrolytic conductivity is measured in
Siemens per cm (S/cm). Siemens per cm is the
reciprocal value of electrical resistance.
This measurement is based on a theoretical liquid
cube with sides of a length of 1 cm. In practice, cells
rarely have such an even geometric shape. The cell
constant C is used to specify the correlation between
the actual measured conductivity and the displayed
specific conductivity.
The measuring cell is inserted in a flow armature,
and the water to be measured flows around it.
The Conex®DIS-C measuring and regulation device
amplifies the signal from the measuring cell and
calculates the signal (e.g. against cable and
temperature compensation parameters). The result
is displayed digitally and can also be registered
using the analog output. The result is shown as an
actual value.
TM03 6980 3914TM03 6981 4506

English (GB)
4
4. Applications
The Conex®DIS-C is a measuring amplifier for
measuring conductivity using a conductive or
inductive measuring cell and for regulation of
disturbance variables using a connected control
element. Two controllers can be set separately as
limit values, intermittent pulse controllers or pulse
frequency controllers.
The Conex®DIS-C is available for installation in a
wall-mounted enclosure or for installation in a control
panel (only conductive measuring cell for
conductivity measurement).
4.1 Field of application for measurements
Principal uses:
• waste water treatment
• water purification
• recycling
• in metal processing industries
• in the chemical industry
• in the foodstuff industry.
5. Safety
The owner/operations manager of the system is
responsible for the following:
• compliance with country-specific safety
regulations
• training of operating personnel.
5.1 Obligations of the owner/operations
manager
The owner/operations manager must ensure that
persons working with the device described fulfil
these requirements:
• They are acquainted with the regulations
concerning working safety and accident
prevention.
• They have been trained in use of the device.
• They have read and understood the warning
information and handling symbols.
The owner/operations manager is also responsible
for ensuring that this manual is kept in the immediate
vicinity of the device and is always available for the
operating personnel.
5.2 Avoidance of danger
Warning
Installation and connection of the device
and the associated supplementary
components must only be carried out by
authorised personnel!
The local safety regulations must be
observed!
Switch off the power supply before
connecting the power cable and the relay
contacts!
Warning
Do not dismantle the device!
Cleaning, maintenance and repair must
only be carried out by authorised
personnel!
Warning
Other applications than those described in
section 4. Applications are not approved
and not permitted. Grundfos cannot be
held liable for any damage resulting from
incorrect use.
Caution
The mounting location must be selected so
that the housing is not subjected to
mechanical loading.
Check that all settings are correct before
starting up the device!

English (GB)
5
6. Identification
6.1 Nameplate
Fig. 3 Nameplate, Conex®DIS-C
6.2 Type key
TM04 0331 3914
DIS-C 1-CC, W-G
351-2000-10006
S/N: 08/02809
Conex DIS-C, 230/240V 50/60Hz
10 VA, IP 65
96725733P1108030802809
1
2
3
4
5
67 8 9
10
11
12
Pos. Description
1 Type designation
2 Model
3 Product name
4 Power consumption [VA]
5 Product number
6 Country of origin
7 Enclosure class
8 Year and week of production
9 Marks of approval, CE mark, etc.
10 Voltage [V]
11 Frequency [Hz]
12 Serial number
Example: DIS -C -P CC -R1 -F -PVC W -G
Units for measurement and control
DIS-C Dosing Instrumentation Standard for
conductivity measurement
Assembly
PPrepacked
Measuring cell
CC Conductivity, conductive
CI Conductivity, inductive
Measuring range
R1 0 to 200 μS/cm
R2 0 to 2000 μS/cm
R3 0 to 20,000 μS/cm
Armature type
FFlow
I Immersion
X No armature
Armature material
PVC Polyvinyl chloride
PP Polypropylene
Controller mounting option
W Wall-mounted
P Panel-mounted (only for conductive measuring cell)
Power supply
G 1 x 230/240 V, 50/60 Hz
H 1 x 115/120 V, 50/60 Hz

English (GB)
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7. Technical data
7.1 Versions
7.2 General data
7.3 Measuring ranges
7.3.1 Measuring ranges and cell constants for
Conex®DIS-C with conductive measuring
cell
7.3.2 Measuring ranges for Conex®DIS-C with
inductive measuring cell
Power supply
• 230 V (± 10 %), 50/60 Hz
(standard version)
• 115/120 V (± 10 %),
50/60 Hz
Type of measuring
cell
• Conductive
• Inductive
Mounting variants
• For wall mounting
• For installation in control
panel (only Conex®DIS-C,
CI devices - with
conductive measuring cell).
Dimensions
(W x H x D)
• 165 x 160 x 80 mm
(for wall mounting)
• 96 x 96 x 127 mm (for
installation in control panel)
Weight
• 1.0 kg (for wall mounting)
• 0.8 kg (for installation in
control panel)
Enclosure class
• IP65 (wall-mounted)
• IP54 (front, installation in
control panel)
Internal fuse
• Yes (wall-mounted)
• No (installation in control
panel)
Display LCD display, two lines,
2 x 16 characters
Connections Terminal strips for cable up to
maximum 1.5 mm2
Power consumption 10 VA
Electrical output 0 (4) to 20 mA galvanically
isolated, maximum load 500 Ω
Switching points Can be set within the
measuring range
Contact rating for
regulation and alarm
relay
6 A / 250 V, maximum ohm
resistive load 550 VA
(with RC contact protection)
Permissible ambient
temperature 0 °C to +50 °C
Permissible storage
temperature -20 °C to +65 °C
Maximum relative
humidity 90 % (non-condensing)
Adjustable
temperature
coefficient of
measurement
solution
0 to 8 % / °C
Proportional band Xp 1 to 3000 %
Reset time Tn 0 to 3000 seconds
Measuring range Cell constant Conductive measuring
cell
0 to 20 MΩ/cm
C = 0.05 96609150
0 to 2 μS/cm
0 to 20 μS/cm
0 to 200 μS/cm
0 to 2 mS/cm C = 0.2 96609151
0 to 20 mS/cm C = 1 96609152
Measuring range Inductivemeasuring
cell
0 to 2.000 mS/cm
95720194
0 to 20.00 mS/cm
0 to 200.0 mS/cm
0 to 2000 mS/cm

English (GB)
7
7.4 Dimensional sketches / drilling diagram
Fig. 4 Dimensional sketch / drilling diagram for Conex®DIS-C for wall mounting
Fig. 5 Dimensional sketch / mounting sketch for Conex®DIS-C for control-panel wall mounting
TM03 6982 4506TM03 6983 4506
10 72.5
160
165
151
12015
approx. 129
approx. 137

English (GB)
8
8. Installation
8.1 Transport and storage
• Transport the device carefully, do not drop!
• Store at dry and cool location between -20 °C
and +65 °C.
8.2 Unpacking
• Check the device for damage. Install as soon as
possible after unpacking.
• Do not install or connect damaged devices!
8.3 Installation requirements
• The location must be vibration-free, dry, dust-free
and free of corrosive, pungent fumes or
aggressive solvents.
• Observe the data in section 7. Technical data.
8.4 Assembling the Conex®DIS-C housing
for wall mounting
Fig. 6 Installation of Conex®DIS-C for wall mounting
1. Drill three dowel holes with a diameter of 8 mm.
See section 7.4 Dimensional sketches / drilling
diagram.
2. Insert the supplied dowel pins.
3. Unscrew the clamp cover from the device.
4. Screw in the top middle screw.
5. Hang the device onto this screw.
6. Secure the device using the other two screws.
7. Screw the clamp cover back on.
Caution
Do not allow any foreign bodies to enter!
Note
Retain the packing material or dispose of it
according to local regulations.
Caution
If you do not observe the installation
requirements, the device may be
damaged! The measurements may not be
correct!
Warning
Switch off the power supply before
installing!
Enclosure class IP65 is only guaranteed if
the clamp covers and the associated
threaded cable connections and temporary
covers are closed.
TM03 6985 4506
151
120
Caution
Do not damage the gasket.
The gasket must be fitted exactly.

English (GB)
9
8.5 Assembling the Conex®DIS-C-P, CI
housing for installation in control panel
1. Make an opening of 92 + 0.8 mm x 92 + 0.8 mm
in the control panel.
2. Slip on the supplied gasket.
3. Insert the device into the opening from the front.
4. Hook the clamps into the tightening cones on the
sides at the top and bottom.
5. Secure the device from the rear using a
screwdriver.
9. Commissioning / electrical
connections
1. Remove the terminal cover on the front of the
device.
2. Use the appropriate cable feedthroughs and
tighten the screws carefully.
3. Connect the cables used to the terminals
according to the Conex®DIS-C terminal
assignment.
4. Close the terminal cover again with correctly
positioned gasket.
Caution
Do not damage the gasket.
The gasket must be fitted exactly.
Warning
Switch off the power supply before
installing!
Enclosure class IP65 is only guaranteed
with the front panel of the terminals
enclosure closed and with appropriate
cable glands or dummy caps.
Warning
Switch off the power supply before
connecting the power supply cable and the
relay contacts! For safety reasons, the
protective conductor must be connected
correctly!
Observe the local safety regulations!
Protect the cable connections and plugs
against corrosion and humidity.
Caution
Before connecting the power supply cable,
check that the supply voltage specified on
the nameplate corresponds to the local
conditions!
An incorrect supply voltage may destroy
the device!
To ensure electromagnetic compatibility
(EMC), the input and current output cables
must be screened.
Connect the screening to the screen
ground on one side.
Refer to the wiring diagram! Route the
input, current output and power supply
cables in separate cable channels.
Caution
Enclosure class IP65 is only guaranteed if
the terminal cover is correctly sealed! Do
not damage the gasket on the terminal
cover!
The gasket on the terminal cover must be
positioned precisely!
Do not damage the gasket!
Note
Unused terminals must remain open.

English (GB)
10
9.1 Conex®DIS-C conductive, housing for wall mounting
Fig. 7 Terminal connection diagram for Conex®DIS-C with conductive measuring cell, housing for wall
mounting
Caution
The measurement input must be screened!
The screen must not be connected to the
Conex®DIS-C, but only to the measuring
cell (outer casing of the cell)!
TM03 6986 3914
12 45611 12 13 20 21 22
+
LNPE
14 15 16 17 18 19
A
3
28
27
26
+
29
+
24V
With Pt100, connection with cable:
96611925 (5 m)
96611928 (15 m)
96611929 (25 m)
(maximum cable length: 50 m)
Pos. Description
1 White, inner electrode of measuring cell
2 Brown, outer electrode of measuring cell
4 Yellow, Pt100
5 Green, Pt100
A Trimmer contrast setting
11-12 0/4-20 mA output
14 / 15 Control relay 1 output
16 / 17 Control relay 2 output
18 / 19 Alarm relay 3 output
20 / 21 / 22 For supply voltage, see nameplate
26 / 27 Water sensor
28 Screen