Grundfos Conex DIA-2Q Bedienungsanleitung

Conex®DIA-2Q

Instrument amplifier and controller

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions

CONTENTS

Page

1. Symbols used in this document

1. Symbols used in this document 2

2. A few words in advance 3

3. Instrument settings 4

4. General information 6

5. Applications 6

6. Safety 6

6.1 Obligations of the owner/operations

manager 6

6.2 Avoidance of danger 6

7. Identification 7

7.1 Nameplate 7

7.2 Type key, Conex®DIA-2Q controllers 8

7.3 Type key, Conex®DIA-2Q preassembled

systems 8

8. Technical data 10

8.1 Design/enclosure class 10

8.2 General data 10

8.3 Electronic data and functions 10

8.4 Measuring ranges 12

8.5 Dimensions 12

9. Installation 13

9.1 Transport and storage 13

9.2 Unpacking 13

9.3 Installation requirements 13

9.4 Installation in control panel 13

9.5 Installation of wall-mounted enclosure 14

10. Commissioning/electrical connections 15

10.1 Terminals 16

10.2 Power supply connection 18

10.3 Relay outputs 18

10.4 Current output 19

10.5 Connections of controller stop,

sample-water sensor and temperature

sensor 19

10.6 Connection of measuring cells 20

11. Operation 24

11.1 Control and display elements 24

11.2 Display elements during initial

commissioning 24

11.3 Software overview 26

11.4 Main menu 27

11.5 Setup 28

11.6 Selection, configuration and

parameterisation of the controller 34

11.7 "Alarm" menu 40

11.8 Checking the settings in the "service"

menu 42

11.9 Calibration 44

11.10 Manual operation 48

12. Fault finding 51

13. Maintenance 51

14. Disposal 51

Warning

Prior to installation, read these installation

and operating instructions. Installation and

operation must comply with local

regulations and accepted codes of good

practice.

Note

These complete installation and operating

instructions are also available on

www.Grundfos.com.

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)

2. A few words in advance

The Conex®DIA-2Q is a multipurpose device

designed to carry out high-precision measurements

and controls of the following:

• a value from parameter group 1:

– chlorine, chlorine dioxide, ozone, hydrogen

peroxide or peracetic acid

• a value from parameter group 2:

– pH value, redox potential.

The integrated controller, the high-resolution

graphics display and the multilingual plain-text user

interface make complicated measuring and control

tasks in water chemistry much easier.

Just a few button inputs lead you to your goal. The

potentiostat helps save even more time, being

automatically matched to the various input variables.

The safety standard of the dosing process is raised

by the automatic open-circuit monitoring of the

current outputs.

Properties of the Conex®DIA-2Q measuring

amplifier and controller include the following:

• all control functions including PID and

continuous-action controls

• proportional control

• setpoint control

• combined setpoint control with external

disturbance variable feedforward

• manual or automatic temperature compensation

• logbook function: chronological recording of

calibration values with date and time

• user coding function as a means of protection

against access by unauthorised persons and for

system administration

• error message function for indication of

non-functioning sensors.

English (GB)

3. Instrument settings

Parameter 1

Setup Controller Alarm

Parameter Controller

Proportional Xp

Alarm

On:_

Off:_

Chlorine:_

Chlorine dioxide:_

Ozone:_

Peroxide:_

Peracetic acid:_

Proport. contrl.

Current input

Proport. variable

Off:_

0-20 mA:_

4- 20 mA:_

Others:_ ________

Reset time TN

(PI/PID control)

sec.

Alarm value 1

Switching point

Temp. meas.

Yes:_

No:_

Interpulse ctrl.:_

Pulse freq. ctrl:_

Cont. controller:_

Deriv. action Tv

(PID control)

sec.

Alarm value 1

Switching direction

Upward violation:_

Downward viol.:_

Temp. comp.

Yes:_

No:_

Setpoint contrl.

Combined contrl.

Off:_

Limit:_

Interpulse ctrl.:_

Pulse freq. ctrl:_

Cont. controller:_

Int.pulse period

(interpulse ctrl.)

sec.

Alarm value 2

Switching point

pH compensation

Yes:_

No:_

Limit contact

Downward viol.:_

Upward violation:_

Min. ON time

(interpulse ctrl.)

sec.

Alarm value 2

Switching direction

Upward violation:_

Downward viol.:_

Measuring ranges

mg/l (ppm)

Ctrl. direction

Downward control:_

Upward control:_

Max. frequency

(pulse freq. ctrl.)

n/min

Hysteresis

Current output 1

Type of control

P:_

PI:_

PID:_

Setpoint

(limit contact) Alarm delay

sec.

Measuring cell

Current input

Disturbance variable

Off:_

0-20 mA:_

4- 20 mA:_

Others:_ ________

Constant load

Dos. time monit.

On:_

Off:_

Measuring cell type Max. dosing flow

Dos. time monit.

Max. dosing time

min

Cleaning motor

Monitoring on:_

Monitoring off:_

Limit

(limit contact)

Water sensor

On:_

Off:_

Hysteresis

(limit monitor)

English (GB)

Parameter 2

Setup Controller Alarm

Parameter Controller

Proportional Xp

Alarm

On:_

Off:_

pH:_

Redox:_

Proport. contrl.

Current input

Proport. variable

Off:_

0-20 mA:_

4- 20 mA:_

Others:_ _______

Reset time TN

(PI/PID control)

sec.

Alarm value 1

Switching point

Temp. meas.

Yes:_

No:_

Interpulse ctrl.:_

Pulse freq. ctrl:_

Cont. controller:_

Deriv. action TV

(PID control)

sec.

Alarm value 1

Switching direction

Upward violation:_

Downward viol.:_

Temp. comp.

Yes:_

No:_

Setpoint contrl.

Combined contrl.

Off:_

Limit:_

Interpulse ctrl.:_

Pulse freq. ctrl:_

Cont. controller:_

Int.pulse period

(interpulse ctrl)

sec.

Alarm value 2

Switching point

pH compensation

Yes:_

No:_

Limit contact

Downward viol.:_

Upward violation:_

Min. ON time

(interpulse ctrl)

sec.

Alarm value 2

Switching direction

Upward violation:_

Downward viol.:_

Measuring ranges

mg/I (ppm)

Ctrl. direction

Downward control:_

Upward control:_

Max. frequency

(pulse freq. ctrl)

n/min

Hysteresis

Current output 1

Type of control

P:_

PI:_

PID:_

Setpoint

(limit contact)

Alarm delay

sec.

Current input

Disturbance variable

Off:_

0-20 mA:_

4- 20 mA:_

Others:_ _______

Constant load

Dos. time monit.

On:_

Off:_

Max. dosing flow

Dos. time monit.

Max. dosing time

min

Limit

(limit contact)

Hysteresis

(limit contact)

English (GB)

4. General information

These installation and operating instructions contain

all information important for users of the Conex®

DIA-2Q:

• 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.

5. Applications

The Conex®DIA-2Q instrument amplifier and

controller is suitable for measuring chlorine (Cl2),

chlorine dioxide (ClO2), ozone (O3), hydrogen

peroxide (H2O2), peracetic acid, pH or redox

potential and for controlling these variables using

appropriate actuators within the applications

described in this manual.

6. Safety

6.1 Obligations of the owner/operations

manager

The owner/operations manager must ensure that

persons working with the Conex®DIA-2Q

instrument amplifier and controller 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.

6.2 Avoidance of danger

Warning

Other applications are not approved and

not permitted. Grundfos cannot be held

liable for any damage resulting from

incorrect use.

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!

Warning

Switch off the power supply before

connecting the power supply cable and

relay contacts!

Do not dismantle the device!

Maintenance and repair must only be

carried out by authorised personnel!

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)

7. Identification

7.1 Nameplate

Fig. 1 Nameplate, Conex®DIA-2Q

TM04 0455 0708

Pos. Description

1 Type designation

2 Model

3 Product name

4 Voltage [V]

5 Frequency [Hz]

6 Product number

7 Country of origin

8 Year and week of production

9 Marks of approval, CE mark, etc.

10 Power consumption [VA]

11 Enclosure class

12 Serial number

DIA-2Q-A D2-X-AU-PCX-Q5-T, W-G

314-935-18008

S/N: 07/33675

Conex DIA-2Q, pre-assembled

230/240V 50/60Hz, 15VA IP 65

95700433P1107190733675

810

English (GB)

7.2 Type key, Conex® DIA-2Q controllers

Type key example: DIA-2Q, 1-D/HP/PA 2-P/R/F, Q-W-G

7.3 Type key, Conex® DIA-2Q preassembled systems

Type key example: DIA-2Q-A, D2-X-AU-PCX-QS-T, W-G

Example: DIA -2Q 1-D/HP/PA 2-P/R/F Q -W -G

Measuring amplifier and controller

DIA-2Q Dosing Instrumentation Advanced with 2 inputs + flow

measurement

Input parameter 1

D Chlorine (Cl2), chlorine dioxide (ClO2) or ozone (O3)

HP Hydrogen peroxide (H2O2)

PA Peracetic acid (PAA)

Input parameter 2

PpH

R Redox (ORP)

Variant

QFlowcompensation

Mounting

W Wall-mounted

P Panel-mounted

Voltage

G 1 x 230 V, 50/60 Hz

H 1 x 120 V, 50/60 Hz

I24VDC

Example: DIA -2Q -A D2 -X -AU -PCX -QS -T W -G

Units for measurement and control

DIA-2Q Dosing Instrumentation Advanced, with 2 inputs,

with flow measurement

Assembly

A Preassembled

Cell type

D1 Pressure-proof, with cleaning motor

D11 Pressure-proof, with cleaning motor

D2 Pressure-proof, with hydro-mechanical cleaning

D12 Pressure-proof, with hydro-mechanical cleaning

D3 Pressureless, with hydro-mechanical cleaning

D13 Pressureless, with hydro-mechanical cleaning

D4 For total chlorine measurement

D5 For free chlorine measurement with buffer dosing

P/R pH or redox (ORP) only

P With pressure retention valve

X Without pressure retention valve

(to be continued)

English (GB)

Example: DIA -2Q -A D2 -X -AU -PCX -QS -T W -G

Disinfection electrodes

AU Gold

PT Platinum

X No disinfection measuring

Other electrodes

PCB pH, ceramic diaphragm, incl. buffer solution

PTB pH, PTFE diaphragm, incl. buffer solution

PKB pH, KCl filling, incl. buffer solution

PGB pH, gel filling incl. buffer solution

PCX pH, ceramic diaphragm, excl. buffer solution

PTX pH, PTFE diaphragm, excl. buffer solution

PKX pH, KCL filling, excl. buffer solution

PGX pH, gel filling, excl. buffer solution

RCB Redox (ORP), ceramic diaphragm, incl. buffer solution

RTB Redox (ORP), PTFE diaphragm, incl. buffer solution

RCX Redox (ORP), ceramic diaphragm, excl. buffer solution

RTX Redox (ORP), PTFE diaphragm, excl. buffer solution

PA Peracetic acid

HP Hydrogen peroxide

X No electrode

Flow sensor

QS Flow sensor integrated

X No flow sensor

Temperature sensor

T With Pt100

X No temperature sensor

Mounting of controller

W Wall-mounted

P Panel-mounted

Voltage

G 1 x 230 V, 50/60 Hz

H 1 x 120 V, 50/60 Hz

I24VDC

English (GB)

8. Technical data

8.1 Design/enclosure class

8.2 General data

8.3 Electronic data and functions

8.3.1 Electronics

8.3.2 Functions of the instrument amplifier

Wall-mounted

enclosure

(distance from

sensors up to three

metres)

IP65

Control panel

enclosure

including separate

potentiostat

IP54 (front)/

IP65 (sensor interface)

(distance from sensor

interface up to 100 metres,

distance from sensor

interface to sensors up to

three metres)

Input power Approximately 15 VA

Permissible

ambient

temperature

0 °C to +45 °C

Permissible

storage

temperature

-20 °C to +65 °C

Maximum relative

humidity 90 % (non-condensing)

Weight 1.5 kg

Enclosure

Plastic (control panel

enclosure: noryl,

wall-mounted

enclosure: ABS)

Power supply

versions

• 230/240 V (50/60 Hz)

(standard model)

• 115/120 V (50/60 Hz)

• 24 VDC

Electronics 16-bit microprocessor

Display High-resolution graphics LCD

with background light

Potential-free relay

outputs

1 alarm relay, 2 controller

relays (250 V/6 A, maximum

550 VA)

Signal inputs

Controller stop; proportional

value, disturbance variable

0/4 to 20 mA; water sensor

Signal outputs

4 analog outputs 0/4 to 20

mA, freely adjustable,

maximum load 500 Ω

Freely adjustable

analog outputs for

measured values

• Parameter group 1:

chlorine, chlorine dioxide,

ozone, peroxide, peracetic

acid

• Parameter group 2: pH,

redox

• For temperature or

continuous control (0/4 to

20 mA) of the parameters

from group 2 (pH, redox)

• For continuous control

(0/4 to 20 mA) of the

parameters from group 1

(chlorine, chlorine dioxide,

ozone, peroxide, peracetic

acid)

Display mode

Measured-value display:

measured value with its unit,

temperature display: in °C or

°F

Temperature

compensation

Manual or automatic with

Pt100

Calibration

Manual calibration, or with

automatic recognition of

buffer solution

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