Grundfos Conex DIS-2Q Bedienungsanleitung

Conex®DIS-2Q

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. Parameter settings 3

3. General information 4

4. Applications 4

5. Safety instructions 4

5.1 Obligations of the owner 4

5.2 Avoiding danger 4

6. Identification 4

6.1 Nameplate 4

7. Technical data 4

7.1 Enclosure class 4

7.2 General data 5

7.3 Electronic data and functions 5

7.4 RS-485 interface 6

7.5 Dimensions 6

8. Installation 6

8.1 Transport and storage 6

8.2 Unpacking 6

8.3 Installation requirements 6

8.4 Installation in control panel 6

8.5 Installation in wall housing 7

9. Electrical connection 7

9.1 Terminals 8

9.2 Power supply connection 9

9.3 Current inputs and outputs 9

9.4 Feedback potentiometer of the final

control element 9

9.5 Relay outputs 10

10. Operation 11

10.1 Function 11

10.2 Controls and displays 13

10.3 Operating the controller 14

11. Fault finding 26

12. Maintenance 26

12.1 Replacing mains fuses (wall housing) 26

13. Spare parts 26

14. Disposal 26

15. Appendix 27

15.1 Measuring and control technology 27

15.2 Application examples of different output

signals and final control elements 34

15.3 RS-485 serial interface 58

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

These complete installation and

operating instructions are also

available on www.grundfos.com.

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)

2. Parameter settings

Controller settings

LED 1st level 2nd level 3rd level

MMeasured value Code functions

--- %

Code Code number Hysteresis Device number for RS-485

--- %

SP 1

Switching point SP 1 Pulse frequency for SP 1 Transmits alarm via RS-485

x 100

pulses/

hour

01 (yes)

00 (no)

SP 2

Switching point SP 2 Pulse frequency for SP 2

x 100

pulses/

hour

XP Proportional band Xp Interpulse period

%sec

TN (s) Reset time Tn Actuating time

sec sec

TV (s)

Derivative action time Tv Disturbance variable Range of current input 2

sec --- % % at 0 (4) mA

% at 20 mA

TM03 7053 2108

Position of feedback

potentiometer

--- %

TM03 7054 2108

Maximum dosing time Minimum pulse length

sec sec

English (GB)

3. General information

This manual contains all important information about

the Conex DIS-2Q:

• technical data

• instructions for startup, use and maintenance

• safety information.

If you need further information, or if problems occur

which are not described in details in this manual,

please contact Grundfos.

4. Applications

The Conex DIS-2Q is a multipurpose device

designed to carry out high-precision controls of

disinfection parameters, pH-value and redox

potential.

Conex DIS-2Q microprocessor-based controllers

controls any measured variables using appropriate

final control elements.

5. Safety instructions

5.1 Obligations of the owner

The owner of the plant is responsible for:

• compliance with country-specific safety

regulations

• training of operating personnel

• provision of prescribed protective equipment

• implementation of regular maintenance.

5.2 Avoiding danger

6. Identification

6.1 Nameplate

Fig. 1 Nameplate, Conex DIS-2Q

7. Technical data

7.1 Enclosure class

Warning

Other applications than those

described in section 4. Applications

are considered as non-approved and

are not permissible.

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 open the device!

Maintenance and repair must only be

carried out by authorised personnel!

Caution

Select the mounting location so that

the housing is not subject to

mechanical loading.

Check that all settings are correct

before starting the device!

TM04 1218 1213

Pos. Description

1 Model

2 Serial number

3 Voltage [V]

4 Frequency [Hz]

5 Product name

6 Product number

7 Country of origin

8 Year and week of production

9CEmark

10 Power consumption [VA]

11 Enclosure class

Control panel enclosure IP54 (front)

Control panel enclosure

with optional front door IP55

Wall-mounted enclosure

(optional wall housing) IP65

342-5000-10000

S/N: 08/61557

230/240V 50/60Hz 8 VA, IP 65

Conex DIS-2Q

96732494P1108270861557

789

English (GB)

7.2 General data

7.3 Electronic data and functions

7.3.1 Inputs and outputs

7.3.2 Controller functions

7.3.3 Display ranges

7.3.4 Adjustment ranges

Input power Approximately 8 VA

Permissible

ambient

temperature

0 to 50 °C

Permissible

storage

temperature

-20 to +65 °C

Maximum relative

humidity 90 % (non-condensing)

Weight 0.8 kg

Enclosure Noryl, chemically resistant

Connections Screw-plug terminals for

cables up to 2.5 mm2

Versions of power

supply

• 230/240 V (50/60 Hz)

(standard model)

• 115/120 V (50/60 Hz)

Current output 1

Continuous control output for

SP 1:

• 0 (4) to 20 mA

• electrically isolated

• max. load 400 Ω.

Current output 2

Position of feedback

potentiometer or continuous

control output for SP 2

• 0 (4) to 20 mA

• electrically isolated

• max. load 400 Ω.

Current input 1

Measured value (actual

value):

• 0 (4) to 20 mA

• electrically isolated

• load 50 Ω.

Current input 2

Disturbance variable/

command variable:

• 0 (4) to 20 mA

• electrically isolated

• load 50 Ω.

Contact rating

6 A / 250 V, max. 550 VA

resistive load (with contact

protection circuit) of relay

outputs.

Note

The current inputs are electrically

isolated from the current outputs, but

are applied together to the same

potential.

Control functions

• Limit contact

• continuous controller

• two-position controller

• three-position controller

proportional controller

• ratio controller

• controller with disturbance

variable feedforward.

Control action

• Proportional action

• integral action

• differential action.

Measured value (actual value) 0-100 %

Disturbance variable 0-1,999 %

Position of final control element 0-100 %

Switching points 0-100 %

Control direction Can be set to upward or

downward.

Proportional band Xp0-500 %

Reset time Tn0-1,999 s

Derivative action time

Tv0-500 s

Setting for current

output 2

Ratio: -1,999 to +1,999 %

Disturbance variable:

0-1,999 %

Hysteresis 0-50 %

Interpulse period 1-99 s

Minimum pulse width 0 - 9.9 s

Pulse frequency

(selectable

separately for each

switching point)

0.1 - 72 (correlates with

10-7,200 pulses/hour)

Actuating time 1-240 s

Time delay for alarm

signal

0-1,999 s (maximum

dosing time)

English (GB)

7.4 RS-485 interface

7.5 Dimensions

Fig. 2 Control panel enclosure Conex DIS-2Q

Fig. 3 Conex DIS-2Q in wall mounting housing

8. Installation

8.1 Transport and storage

• Transport the device carefully.

• Do not drop the device!

• Store at a dry and cool location.

8.2 Unpacking

1. Check the device for damage.

2. Install the device as soon as possible after

unpacking.

3. Do not install or connect damaged devices!

8.3 Installation requirements

• Dry room

• room temperature: 0-50 °C

• vibration-free location.

8.4 Installation in control panel

Fig. 4 Control panel enclosure Conex DIS-2Q

1. Make an opening 92 + 0.8 mm x 92 + 0.8 mm in

the control panel.

2. Slip on the supplied gasket.

3. Insert the Conex DIS-2Q into the opening from

the front.

1. Hook the clamps into the tightening cones on the

sides at the top and bottom.

2. Secure the device from the rear using a

screwdriver.

Data transfer rate 9,600 baud

Data format

•8bits

• 1 start bit

• 1 stop bit

• no parity.

Maximum cable

length 2-wire cable up to 1,200 m

Note

Further data: See 15.3 RS-485 serial

interface.

TM03 7056 1213

TM03 7055 1213

138

198

212,5

163

Note

Retain 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!

TM03 7057 1213

Caution

Do not damage the gasket!

The gasket must be fitted exactly!

+0.8

> 10.5

> 30.5

English (GB)

8.5 Installation in wall housing

The plastic housing is designed for the

Conex DIS-2Q controller and is very easy to install

and service.

– 300-115 (91835231) for one Conex DIS-2Q

controller

– 300-114 (95709720) for one Conex DIS-2Q

controller with RS-485 interface.

Technical data

1. Loosen the four fastening screws of the front

panel.

2. Remove the front panel.

3. Insert the device 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.

6. When the front panel is mounted, plug the device

onto the base plate.

7. Screw the front panel into the wall housing.

9. Electrical connection

1. Connect the cables used to the terminals

according to the Conex DIS-2Q terminal

assignment.

Material ABS

Enclosure class IP65

Complete with four cable glands

Warning

Switch off the power supply before

installing!

Caution

Enclosure class IP65 is only

guaranteed if the transparent cover is

closed and the appropriate cable

glands or dummy caps are fitted.

Warning

Disconnect the mains voltage before

connecting the power supply cable and

the relay contacts!

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 mains voltage specified

on the type plate correlates with the

local conditions!

An incorrect mains voltage may

destroy the device!

Caution

To ensure electromagnetic

compatibility (EMC):

Input and current output cables must

be shielded.

Connect the shielding to the shield

ground on one side.

Refer to the connection diagram! Input,

current output and mains cables must

be in separate cable channels.

Note

Unused terminals remain open.

English (GB)

9.1 Terminals

Fig. 5 Terminals Conex DIS-2Q

TM03 7058 1213

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

27 28 29 30 31 32 PE

SP1 SP2 Alarm L1 N PE

H2O

mA 1 mA 2

A A

RS 485

mA1

mA 2

A A

100%

0 %

Pos. Description

External inputs

mA 1 Current input 1 (measured variable)

mA 2 Current input 2 (disturbance variable or command variable)

Outputs

mA 1 Current output 1 (control signal for SP 1)

mA 2 Current output 2 (position of feedback potentiometer or control signal for SP 2)

0 % / 100 % Feedback potentiometer

H2O Water sensor or potential free output for stopping control

Potential free relay outputs

SP 1 Set point 1

SP 2 Set point 2

Alarm Alarm

Power supply

PE Protective earth conductor

L1 Phase

N Neutral conductor

English (GB)

9.1.1 Cable types and length

9.2 Power supply connection

1. Connect the plugs to the rear of the device.

2. Ensure correct orientation.

3. Connect the protective earth conductor (PE) to

terminal 26.

4. Connect the neutral conductor (N) to terminal 25.

5. Connect phase (L1) to terminal 24.

6. Switch the device on and off by switching the

power supply on and off accordingly.

The device itself does not feature a separate on/off

switch.

9.3 Current inputs and outputs

9.3.1 Current input 1 (measured value)

The signal from a measuring amplifier or transmitter

which determines the actual value of the measured

variable is connected to current input 1.

1. Connect the + conductor to terminal 2.

2. Connect the - conductor to terminal 1.

3. Connect the screen to earth (PE) at one end.

9.3.2 Current input 2 (disturbance variable or

command variable)

The signal from a measuring amplifier or transmitter

which specifies the disturbance variable or command

variable is connected to this current input.

1. Connect the + conductor to terminal 4.

2. Connect the - conductor to terminal 5.

3. Connect the screen to earth (PE) at one end.

9.3.3 Current output 1 (measured value)

Current 1 output outputs the displayed measured

value as an analog current (0 (4) to 20 mA).

Use of current signal:

• As input signal for another indicator.

1. Connect the + conductor to terminal 6.

2. Connect the - conductor to terminal 7.

3. Connect the screen to earth (PE) at one end.

9.3.4 Current output 2 (position of feedback

potentiometer)

Current output 2 outputs the position of the feedback

potentiometer of the final control element as an

analog current (0 (4) to 20 mA).

Use of current signal:

• As input signal for another indicator

1. Connect the + conductor to terminal 13.

2. Connect the - conductor to terminal 14.

3. Connect the screen to earth (PE) at one end.

9.4 Feedback potentiometer of the final

control element

1. Connect terminal 9 to the "Start" connection

(0 %).

2. Connect terminal 10 to the "End" connection

(100 %).

3. Connect terminal 8 to the "Wiper" connection.

4. Connect the screen to earth (PE) at one end.

Cable Conductors Max. length

[m] Screen

A2 1,000 Single

B3 1,000 Single

C2 1,200 Single

Caution

Make sure that the polarity of the

current input is correct!

Maximum load: 50

Caution

Make sure that the polarity of the

current input is correct!

Maximum load: 50

Caution

Make sure that the polarity of the

current output is correct!

Maximum load: 400

Caution

Make sure that the polarity of the

current output is correct!

Maximum load: 400

Caution

Minimum resistance of feedback

potentiometer: 500

English (GB)

9.5 Relay outputs

With inductive loads (also relays and contactors),

interference suppression is necessary. If this is not

possible, protect the relay contacts using a

suppressor circuit as described below.

• With AC voltage:

• With DC voltage: Connect the free-wheeling

diode in parallel to the relay or contactor.

Fig. 6 Suppressor circuit, DC/AC

9.5.1 SP 1 (as N/O contact)

1. Connect terminal 16 to the power supply terminal

for L1 of the first final control element.

2. Connect terminal 17 to the power supply

cable L1.

9.5.2 SP 2 (as N/O contact)

1. Connect terminal 19 to the power supply terminal

for L1 of the first final control element.

2. Connect terminal 20 to the power supply

cable L1.

9.5.3 Alarm relay

1. Connect terminal 21 to the power supply terminal

for L1 of the alarm unit.

2. Connect terminal 22 to the power supply

cable L1.

Note

The connection of the relay outputs

depends on the application and the

final control elements used.

Therefore consider the connections

described below as guidelines.

See 15.2 Application examples of

different output signals and final

control elements and the

documentation of the final control

element.

Current up to Capacitor C Resistor R

60 mA 10 nF, 275 V 390 Ω, 2 W

70 mA 47 nF, 275 V 22 Ω, 2 W

150 mA 100 nF, 275 V 47 Ω, 2 W

1.0 A 220 nF, 275 V 47 Ω, 2 W

Caution

Provide the relay outputs with a

corresponding backup fuse!

TM03 7209 4513

ACDC

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