KSB Cervomatic EDP.2 Operating Manual

Automatic Control Unit

Cervomatic EDP.2

Installation/Operating Manual

Legal information/Copyright

Installation/Operating Manual Cervomatic EDP.2

Original operating manual

All rights reserved. The contents provided herein must neither be distributed, copied, reproduced,
edited or processed for any other purpose, nor otherwise transmitted, published or made available to a
third party without the manufacturer's express written consent.

Subject to technical modification without prior notice.

© KSB SE & Co. KGaA, Frankenthal 09/01/2018

Contents

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Cervomatic EDP.2

Contents

1 General.................................................................................................................................................... 4

1.1 Principles ...........................................................................................................................................................4

1.2 Target group.....................................................................................................................................................4

1.3 Other applicable documents............................................................................................................................4

1.4 Symbols .............................................................................................................................................................4

2 Safety...................................................................................................................................................... 5

2.1 Key to safety symbols/markings.......................................................................................................................5

2.2 General..............................................................................................................................................................5

2.3 Intended use .....................................................................................................................................................5

2.4 Personnel qualification and personnel training.............................................................................................6

2.5 Consequences and risks caused by non-compliance with this manual .........................................................6

2.6 Safety awareness ..............................................................................................................................................6

3 Transport/Temporary Storage/Disposal............................................................................................... 7

3.1 Checking the condition upon delivery............................................................................................................7

3.2 Transport...........................................................................................................................................................7

3.3 Storage..............................................................................................................................................................7

3.4 Disposal .............................................................................................................................................................8

4 Description.............................................................................................................................................. 9

4.1 General description ..........................................................................................................................................9

4.2 Designation.......................................................................................................................................................9

4.3 Name plate........................................................................................................................................................9

4.4 Design details..................................................................................................................................................10

4.5 Configuration and function...........................................................................................................................10

4.6 Technical data.................................................................................................................................................10

4.7 Displays and indicator lamps .........................................................................................................................11

4.8 Fluids handled.................................................................................................................................................11

5 Installation at Site................................................................................................................................ 12

5.1 Safety regulations...........................................................................................................................................12

5.2 Checks to be carried out prior to installation...............................................................................................12

5.3 Connecting the automatic control unit ........................................................................................................12

5.4 Connecting the piping ...................................................................................................................................13

5.4.1 Connecting the piping (dry installation) ..........................................................................................13

5.4.2 Connecting the piping (wet installation) .........................................................................................13

5.5 Electrical connection ......................................................................................................................................14

6 Commissioning/Start-up/Shutdown................................................................................................... 16

6.1 Prerequisites for commissioning/start-up......................................................................................................16

6.2 Commissioning/Start-up.................................................................................................................................16

6.2.1 Commissioning ...................................................................................................................................16

6.2.2 Configuration..................................................................................................................................... 16

6.2.3 Pre-charging of accumulator.............................................................................................................18

6.3 Shutdown/storage/preservation ....................................................................................................................18

6.4 Returning to service .......................................................................................................................................18

7 Maintenance......................................................................................................................................... 19

8 Trouble-shooting.................................................................................................................................. 20

9 Related Documents.............................................................................................................................. 22

9.1 Wiring diagrams .............................................................................................................................................22

9.2 Additional electrical connections ..................................................................................................................23

10 EU Declaration of Conformity............................................................................................................. 24

Index ..................................................................................................................................................... 25

1 General

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Cervomatic EDP.2

1 General

1.1 Principles

This operating manual is supplied as an integral part of the type series and variants
indicated on the front cover. The manual describes the proper and safe use of this
equipment in all phases of operation.

The name plate indicates the type series, the main operating data and the serial
number. The serial number uniquely describes the system and is used as identification
in all further business processes.

In the event of damage, immediately contact your nearest KSB service centre to
maintain the right to claim under warranty.

1.2 Target group

This operating manual is aimed at the target group of trained and qualified specialist
technical personnel.

1.3 Other applicable documents

Table1: Overview of other applicable documents

Document Contents

Operating manual Description of the proper and safe use of the

pump in all phases of operation
Wiring diagram Description of the electrical connections
Supplementary operating

manual

1)

Description of the proper and safe use of

supplementary product components

For accessories and/or integrated machinery components, observe the relevant
manufacturer's product literature.

1.4 Symbols

Table2: Symbols used in this manual

Symbol Description

✓ Conditions which need to be fulfilled before proceeding with the

step-by-step instructions

⊳ Safety instructions
⇨ Result of an action
⇨ Cross-references

1.

2.

Step-by-step instructions

Note
Recommendations and important information on how to handle
the product

1) Optional

2 Safety

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Cervomatic EDP.2

2 Safety

!

DANGER

All the information contained in this section refers to hazardous situations.

2.1 Key to safety symbols/markings

Table3: Definition of safety symbols/markings

Symbol Description

!

DANGER

DANGER

This signal word indicates a high-risk hazard which, if not avoided,
will result in death or serious injury.

!

WARNING

WARNING

This signal word indicates a medium-risk hazard which, if not
avoided, could result in death or serious injury.

CAUTION

CAUTION

This signal word indicates a hazard which, if not avoided, could
result in damage to the machine and its functions.

Explosion protection

This symbol identifies information about avoiding explosions in
potentially explosive atmospheres in accordance with Directive
2014/34/EU (ATEX).

General hazard

In conjunction with one of the signal words this symbol indicates a
hazard which will or could result in death or serious injury.

Electrical hazard

In conjunction with one of the signal words this symbol indicates a
hazard involving electrical voltage and identifies information about
protection against electrical voltage.

Machine damage
In conjunction with the signal word CAUTION this symbol indicates
a hazard for the machine and its functions.

2.2 General

This operating manual contains general installation, operating and maintenance
instructions that must be observed to ensure safe operation of the system and
prevent personal injury and damage to property.

The safety information in all sections of this manual must be complied with.
The operating manual must be read and understood by the responsible specialist

personnel/operators prior to installation and commissioning.
The contents of this operating manual must be available to the specialist personnel

at the site at all times.
Instructions/information attached directly to the automatic control unit must be

observed at all times and kept in a perfectly legible condition. This applies to, for
example:

▪ Markings for connections
▪ Name plate

The operator is responsible for ensuring compliance with all local regulations not
taken into account in this operating manual.

2.3 Intended use

The values specified in the technical product literature for the mains voltage, mains
frequency, ambient temperature, and motor current must not be exceeded. The
automatic control unit must only be operated in accordance with the instructions
provided in the operating manual and other applicable documents
(ðSection1.3,Page4) .

2 Safety

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Cervomatic EDP.2

2.4 Personnel qualification and personnel training

All personnel involved must be fully qualified to install, operate, maintain and
inspect the equipment this manual refers to. The responsibilities, competence and
supervision of all personnel involved in transport, installation, operation,
maintenance and inspection must be clearly defined by the operator.

Deficits in knowledge must be rectified by means of training and instruction
provided by sufficiently trained specialist personnel. If required, the operator can
commission the manufacturer/supplier to train the personnel.

Training on the automatic control unit must always be supervised by specialist
technical personnel.

2.5 Consequences and risks caused by non-compliance with this manual

▪ Non-compliance with this operating manual will lead to forfeiture of warranty

cover and of any and all rights to claims for damages.

▪ Non-compliance can, for example, have the following consequences:

– Hazards to persons due to electrical, thermal, mechanical and chemical

effects and explosions

– Failure of important product functions
– Failure of prescribed maintenance and servicing practices
– Hazard to the environment due to leakage of hazardous substances

2.6 Safety awareness

In addition to the safety information contained in this manual and the intended use,
the following safety regulations shall be complied with:

▪ Accident prevention, health and safety regulations
▪ Explosion protection regulations
▪ Safety regulations for handling hazardous substances
▪ Applicable standards, directives and laws

3 Transport/Temporary Storage/Disposal

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Cervomatic EDP.2

3 Transport/Temporary Storage/Disposal

3.1 Checking the condition upon delivery

1. On transfer of goods, check each packaging unit for damage.

2. In the event of in-transit damage, assess the exact damage, document it and

notify KSB or the supplying dealer (as applicable) and the insurer about the
damage in writing immediately.

3.2 Transport

The automatic control unit must be shut down for transport.

Table4: Ambient conditions for transport

Ambient condition Value

Relative humidity Max. 80% (no condensation)
Ambient temperature -10°C to + 70°C

CAUTION

Improper transport

Damage to the automatic control unit!

▷ The automatic control unit must always be transported properly and in its

original packaging.

▷ For transport, observe the transport instructions on the original packaging.
▷ Do not throw the automatic control unit.

1. Unpack the automatic control unit upon receipt and check for in-transit
damage.

2. Report any in-transit damage to the manufacturer immediately.

3. Dispose of packaging material in accordance with local regulations.

3.3 Storage

If the ambient conditions for storage are met, the automatic control unit will give
reliable service even after a prolonged period of storage.

CAUTION

Damage during storage by humidity, dirt or vermin

Corrosion/contamination of automatic control unit!

▷ For outdoor storage, cover the (packed or unpacked) automatic control unit

and accessories with waterproof material.

Table5: Ambient conditions for storage

Ambient condition Value

Relative humidity Max. 80% (no condensation)
Ambient temperature -10°C to + 70°C

▪ Store the automatic control unit under dry and vibration-free conditions, if

possible in its original packaging.

▪ Store the automatic control unit in a dry room where the level of atmospheric

humidity is as constant as possible.

▪ Prevent excessive fluctuations in atmospheric humidity (see table on ambient

conditions for storage).

If properly stored indoors, the equipment is protected for a maximum of 12months.

3 Transport/Temporary Storage/Disposal

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3.4 Disposal

NOTE

Due to certain components it contains, the device is classified as special waste and
meets RoHs 2011/65/EC requirements.

Once decommissioned, the device must be properly disposed of in accordance with
local regulations.

4 Description

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4 Description

4.1 General description

▪ Automatic control unit for automatically starting and stopping a pump

4.2 Designation

Example: Cervomatic EDP.2

Table6: Designation key

Code Description

Cervomatic Type series
E Single-phase AC
D Three-phase current
P Electrical protection
2 Product version

4.3 Name plate

Product: U471031
Serial nº: V1.11-05-1015

P max: 1000 kPa- 10 bar
T50
Ip55

Freq. 50/60 Hz
Imax 16(10) A
V: 1~230 Pump: 1~230
V: 3~230 Pump: 3~230
V: 3~400 Pump: 3~400

1

2

3

4

5

6

7

8

Johann-Klein-Straße 9

Deutschland

67227 Frankenthal

KSB SE & Co. KGaA

Fig.1: Name plate (example)

1 Product code 2 Serial number, firmware version

V1.11, 05 not relevant, month of
manufacture 10, year of

construction 15
3 Max. operating pressure 4 Max. ambient temperature
5 Enclosure 6 Frequency
7 Max. rated pump current

10A continuous load
16A brief load

8 Control voltage

4 Description

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Cervomatic EDP.2

4.4 Design details

Design

▪ Automatic control unit
▪ Pressure-dependent starting and either pressure-dependent or flow-dependent

stopping of pump

▪ IP55 enclosure
▪ 1~230/3~230/3~400 V AC, 50/60Hz
▪ 1.5m power cable with shockproof plug
▪ Integrated check valve

4.5 Configuration and function

Function

▪ Pressure-dependent pump start
▪ Pressure-dependent or flow-dependent stop of the pump
▪ Integrated dry running protection
▪ Integrated overload protection

Operating modes

On/off mode:

▪ The pump set is started when the pressure in the pipe drops.
▪ The pump set is stopped when flow is interrupted.

Pressure control

▪ The pump set is started when the pressure in the pipe drops.
▪ The pump set is stopped when the stop pressure in the pipe is exceeded.

Further functions

▪ Integrated dry running protection of the pump
▪ Integrated overload protection

4.6 Technical data

Table7: Performance data

Characteristic Value

Maximum operating pressure 10bar
Maximum rated pump current 10A
Fluid temperature 0 - +40°C
Ambient temperature 0 - +50°C
Maximum flow rate 15m3/h
Minimum flow rate 0.09m3/h
Maximum start pressure

(pressure-dependent mode)

6.5 bar

Maximum stop pressure
(pressure-dependent mode)

7 bar

Range of start pressure (on/off
mode)

1 - 5bar

4 Description

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Cervomatic EDP.2

4.7 Displays and indicator lamps

MENU

LINE

FAILURE

AUTOPUMP

Cervomatic EDP.2

1

2
3

4

5

6

7 8

9

10

Fig.2: Indicator lamps

1 Display of various parameters during configuration.

In operation, the current pressure, configured start-up pressure and alerts are

displayed.
2 AUTO On/Off button: For selecting between manual and automatic mode.
3 LINE LED (green): Illuminates when the automatic control unit is connected to

the power supply.
4 FAILURE LED (red): Illuminates or flashes, depending on the type of fault.
5 AUTO LED (green): Illuminates in automatic mode; does not illuminate in

manual mode.
6 PUMP LED (yellow): Illuminates when the pump is operating.
7 PUMP start/stop button: Can only be pressed when automatic mode is

deactivated (AUTO LED does not illuminate).
8 MENU button: Opens and closes the configuration menu.
9 ENTER button: Saves configured values. A new field appears in the

configuration menu every time the button is pressed. Press MENU to exit the

configuration display.
10 ▲ and ▼ button: Adapts the configuration parameters up and down.

4.8 Fluids handled

▪ Drinking water
▪ Service water
▪ Stormwater
▪ Fire-fighting water
▪ Cooling water

5 Installation at Site

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5 Installation at Site

5.1 Safety regulations

DANGER

Incorrect installation

Danger to life!

▷ Install the automatic control unit in a flood-proof location.
▷ Never install the automatic control unit in potentially explosive atmospheres.
▷ The automatic control unit is not suitable for controlling pumps in potentially

explosive atmospheres.

5.2 Checks to be carried out prior to installation

The place of installation must meet the following requirements:

▪ Dry
▪ Frost-proof
▪ Well ventilated
▪ Lockable; unauthorised access must be prevented.
▪ Flood-proof
▪ Installation in potentially explosive atmospheres is not permitted.

Ambient conditions

The ambient conditions specified in the following table must be observed:

Table8: Ambient conditions

Characteristic Value

Temperature during operation 0 °C to +50 °C
Relative humidity Non-condensing
Installation altitude Max. 1,000m above MSL

5.3 Connecting the automatic control unit

CAUTION

Automatic control unit lifted by the cable

Damage to the automatic control unit!

▷ Do not lift the automatic control unit by the cable.

▪ Remove the automatic control unit from its original packaging.
▪ Mount the automatic control unit in the vertical position directly on the pump.
▪ For wet-installed pumps, mount the automatic control unit to the rigid discharge

pipe in a flood-proof location.

▪ Always install the automatic control unit with the discharge side pointing

upwards.

▪ Screw the accompanying accumulator into the rear of the housing using suitable

sealing material (Teflon tape).

NOTE

The automatic control unit has an integrated accumulator. An external accumulator
is not required.
For frequent water extraction, it is recommended that the system be used in
dedicated pressure-dependent mode and an external accumulator be installed.

5 Installation at Site

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Cervomatic EDP.2

5.4 Connecting the piping

Connect all piping without transmitting any stresses or strains.

5.4.1 Connecting the piping (dry installation)

▪ The automatic control unit can be connected directly to the pump discharge

nozzle.

▪ Always mount the automatic control unit in the vertical position.

CAUTION

Plastic threaded connections sealed with hemp

Stresses/strains and leaks in the plastic piping!

▷ Use Teflon tape for sealing.

Automatic control unit connection between pump and consumer installation

▪ Route connecting line between pump and automatic control unit.
▪ The diameter of the connecting line must at least equal the diameter of the

pump discharge line.

▪ Observe the direction of fluid flow (see arrow on automatic control unit).

5.4.2 Connecting the piping (wet installation)

DANGER

Automatic control unit submerged

Danger to life!

▷ Never submerge the automatic control unit.

▪ Use suitable connecting elements to connect the pump's discharge line directly to

the pump discharge nozzle.

▪ The diameter of the connecting line must at least equal the diameter of the

pump discharge line.

▪ Observe the direction of fluid flow (see arrow on automatic control unit).
▪ Always mount the automatic control unit in the vertical position.
▪ The pump has an integrated vent valve.

For submersible borehole pumps, the automatic venting function facilitates
priming under back pressure.

CAUTION

Plastic threaded connections sealed with hemp

Stresses/strains and leaks in the plastic piping!

▷ Use Teflon tape for sealing.

5 Installation at Site

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Cervomatic EDP.2

5.5 Electrical connection

DANGER

Electrical connection work by unqualified personnel

Risk of fatal injury due to electric shock!

▷ Always have any work on the connection to the power supply performed by a

trained electrician.

▪ Remove the cover of the control electronics and make all connections as per

specifications on the terminal strip.

▪ Check power supply.

Set the selector switch to define the voltage:

To A for 220 - 240V
To B for 380 - 415V

Pumps with three-phase motors

NOTE

An upstream motor protection switch is recommended.

▪ Power supply of automatic control unit: Connect L1, L2 and L3 via a 3-pole motor

protection switch (recommended) in de-energised state and connect the PE
conductor to ensure correct earthing.

▪ Motor power supply: Connect motor to U, V, W and PE (earth).

(ðSection9.1,Page22)

Pumps with AC motors

NOTE

An upstream motor protection switch is recommended.

▪ Power supply of automatic control unit: Connect L1 and L2 via a motor

protection switch (recommended) in de-energised state and connect the PE
conductor to ensure correct earthing.

▪ Motor power supply: Connect motor to U, V and PE (earth).

(ðSection9.1,Page22)

NOTE

The earth conductor must always be longer than all other conductors. The earth
conductor is the first to be connected during installation and the last to be removed
when dismantling.

Connecting additional equipment

▪ Alarm monitoring:

The automatic control unit has a volt-free contact with a maximum amperage of
1A for transmitting signals to various alarm devices (visual, acoustic, etc.).
Connection procedure (ðSection9.2,Page23)

▪ Level switch of inlet tank:

(e.g. via float switch in inlet tank)
Input for stopping pump as soon as the external switch for detecting the
minimum fill level trips.
Connection procedure (ðSection9.2,Page23)

5 Installation at Site

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Cervomatic EDP.2

When closing the housing after establishing the electrical connection, ensure that the
housing gasket is correctly seated. Ensure that the internally routed wires do not get
trapped.
Check the pump's direction of rotation during commissioning.

6 Commissioning/Start-up/Shutdown

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Cervomatic EDP.2

6 Commissioning/Start-up/Shutdown

6.1 Prerequisites for commissioning/start-up

Before commissioning/start-up of the system make sure that the following
requirements are met:

▪ The system has been properly connected to the electric power supply and is

equipped with all protection devices.

▪ All relevant VDE standards and/or regulations applicable in the country of use are

complied with.

6.2 Commissioning/Start-up

6.2.1 Commissioning

NOTE

An upstream motor protection switch is recommended.

Energise the system. (ðSection9.1,Page22)
Wait 5 seconds while the automatic control unit performs the autotest.

The configuration menu automatically opens when the automatic control unit is
commissioned for the first time.
A message on selecting the user interface language appears on the LCD display.
Select the appropriate language and start the configuration routine.

(ðSection6.2.2,Page16)

As soon as the device is configured, press the AUTO On/Off button (green LED does
not illuminate) to toggle to manual mode.
Check the direction of rotation and correct pump suction by pressing the Start/Stop
button.
Press AUTO On/Off. The automatic control unit is ready for operation.

6.2.2 Configuration

NOTE

PON must be at least 0.2bar higher than the static system pressure.
Example: Static system pressure of 2bar (20m water column), PON ➔ 2.2bar.
PON must always be selected 0.5 bar lower than the pump nominal pressure.

NOTE

P

OFF

must always be selected 0.5 bar lower than the pump nominal pressure in

dedicated pressure-dependent mode.

NOTE

Press the ▲ ▼ buttons to change the values and ENTER to save them.
Press MENU to exit the configuration procedure.
Every time the ENTER button is pressed, the different displays are shown with the
individual configuration steps.

6 Commissioning/Start-up/Shutdown

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Cervomatic EDP.2

Table9: Displays and configuration

Display Button

0

PLINE PON
03,0 bar 02,0 bar

Press the MENU button for 3 seconds to start the configuration.

MENU

MENU

3”

1

Cervomatic EDP.2
V 0.0

The message that is briefly displayed provides information on the
software version.

ENTER

3”

2

LANGUAGE
ENGLISH

Use the ▲ ▼ buttons to select the respective language: "SPRACHE
DEUTSCH", "LANGUAGE ENGLISH", "LANGUE FRANÇAISE", "LINGUA
ITALIANA" and "IDIOMA ESPAÑOL".

MENU

ENTER

3

INT. MAX.
OFF

To protect the motor from overheating, specify the rated current from 0
to 10A using the ▲ ▼ buttons.
The corresponding value is specified on the name plate of the motor.
Press ENTER to confirm.

MENU

ENTER

4

LEVEL PROBE
NO

If no external device is available to detect the minimum water level in the
inlet tank, press ENTER to confirm.
Otherwise, use the ▲ ▼ buttons to change/set from NO to YES.

MENU

ENTER

5

OPERATING MODE
ON-OFF

OPERATING MODE
PRESSOSTATIC

The operating mode can be selected with the ▲ ▼ buttons in this step.
There are 2 options available:

▪ On/Off mode:

Only the start-up pressure is configured here. When this pressure is
reached, the pump is started with the delay configured in the next
step and is stopped when it is no longer required.

▪ Pressure-dependent mode:

The start-up pressure value and stop pressure value of the pump are
configured here.

MENU

ENTER

6

P ON
05,0 bar

P ON
05,0 bar

Indicates the start-up pressure for the pump. The required pressure values
can be set within the respective range using the ▲ ▼ buttons:

▪ On/Off mode: 1 to 5 bar.
▪ Pressure-dependent mode: 0 to 6.5 bar.

MENU

ENTER

7

P OFF
06,0 bar

Indicates the stop pressure of the pump for dedicated pressure­dependent mode. The stop pressure must be between 1 and 7bar or be
1bar higher than the start-up pressure.
The values can be changed by pressing the ▲ ▼ buttons.

MENU

ENTER

8

START DELAY
00 sec.

Indicates the delay when the pump is started after the start-up pressure
was reached.
Select the time required using the▲ ▼ buttons.

MENU

ENTER

9

STOP DELAY
00 sec.

Indicates the stop delay of the pump after the stop pressure was reached.
Select the time required using the▲ ▼ buttons.

MENU

ENTER

10

PLINE PON
05,0 03,0

PLINE PON POFF
05,0 02,0 06,0

PLINE INT F
05,0 9,0 1

The automatic control unit is ready for operation.
Press the AUTOMATIC On/Off button; the green LED illuminates.
Shown on the LCD display:

▪ On/Off mode: current pressure (PLINE) and start-up pressure (PON).
▪ Pressure-dependent mode: current pressure (P

LINE

), start-up pressure

(PON) and stop pressure (P

OFF

).

An expert view mode can be selected with the following parameters in
automatic mode:

▪ P

line

: current pressure.

▪ INT: present current consumption.
▪ F: position of the flow sensor (0: no flow, 1: with flow)

MENU

On
Off

6 Commissioning/Start-up/Shutdown

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Cervomatic EDP.2

6.2.3 Pre-charging of accumulator

The accumulator is pre-charged to a pressure of 3.5 bar at the factory. The
accumulator should be pre-charged to a pressure of 0.2bar below the pump start-up
pressure configured for dedicated pressure-dependent mode.
If pressure is insufficient:

▪ In manual mode, open a consumer installation and pre-charge the accumulator

via the valve using a bicycle pump and adapter.

▪ Screw the valve cap back onto the valve. Press AUTO On/Off.

6.3 Shutdown/storage/preservation

▪ Pull the pump plug.
▪ Remove the automatic control unit from the piping.
▪ Rinse off with clean water.
▪ Press in the check valve at the automatic control unit and shake water out of the

automatic control unit.

▪ Leave the automatic control unit to dry and store in a dry, dark and frost-proof

room.

▪ Special preservation measures are not required.

6.4 Returning to service

For returning the equipment to service, observe the items on commissioning/start-up.

7 Maintenance

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Cervomatic EDP.2

7 Maintenance

Check the proper functioning of the automatic control unit once per year.

8 Trouble-shooting

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8 Trouble-shooting

WARNING

Improper work to remedy faults

Risk of injury!

▷ For any work performed to remedy faults, observe the relevant information

given in this operating manual and/or in the product literature provided by the
accessories manufacturer.

If problems occur that are not described in the following table, consultation with the
KSB customer service is required.

A1

Lack of water

A2

Fill level sensor

A3

Pressure sensor damaged

A4

Overcurrent

A5

Pump fuse

A6

Accumulator

None

No display

Table10: Trouble-shooting

Display
Fault message
Description

System behaviour Remedy

A1

A1
LACK OF WATER

Fault message:
LED "FAILURE" FLASHES (FAULT).
Fault message after acknowledgement:
LED "FAILURE" ILLUMINATED (FAULT).

If the automatic control unit detects a
lack of water at the automatic control
unit inlet for more than 10 seconds, the
pump is stopped and the ART logic is
triggered.

The ART logic restarts the pump
after 5minutes and 30seconds
have lapsed to reinstate the
function.
If there is still a lack of water,
the automatic control unit
restarts the function every
30minutes over a period of
24hours. If the system still
detects a lack of water after
several repeat attempts, the
pump is stopped permanently
until the fault has been
rectified.

No water is present at the inlet
and the safety system was
triggered as a result: Check the
water supply inlet. The pump
can be filled with water by
pressing the START/STOP button
(the AUTO On/Off LED should
not illuminate; if this is the case,
deactivate the LED by pressing
the button).

A2

A2
LEVEL

Fault message after acknowledgement:
LED "FAILURE" ILLUMINATED (FAULT).

If a float is installed in the inlet tank,
the float switch immediately stops the
pump as soon as a lack of water is
detected.
The system then outputs a lack-of-water
message (A1).

The pump remains stopped until
the fill level sensor detects
water in the tank again.

Check tank.

A3

A3
TRANSDUCER

Fault message after acknowledgement:
LED "FAILURE" ILLUMINATED (FAULT).

Damage to the pressure sensor is shown
on the LCD display of the automatic
control unit.
Call in customer service.

Operation of the automatic
control unit is interrupted.

Call in customer service.

8 Trouble-shooting

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Cervomatic EDP.2

Display
Fault message
Description

System behaviour Remedy

A4

A4
OVERCURRENT

Fault message:
LED "FAILURE" FLASHES (FAULT).
Fault message after acknowledgement:
LED "FAILURE" ILLUMINATED (FAULT).

The pump has an overcurrent protective
device that responds in accordance with
the value defined in the configuration
menu. These overcurrents generally
pertain to pump malfunctions or power
supply faults.

If this fault is detected, the
system attempts to restart the
pump four times. If the pump
still does not start after the
fourth attempt, it remains
stopped until the fault has been
rectified.

Check the status of the pump.
Impeller is blocked.
Verify the amperage entered in
the configuration menu (it is
recommended that you always
set the amperage to 15 % above
the rated pump current).
Check the fuses for damage.
The pump is put back into
operation as soon as the
problems have been resolved.
The INSTALLATION menu is then
displayed for entering the
appropriate amperage.

(ðSection6.2.2,Page16)

A5

A5
PUMP OFF

Fault message after acknowledgement:
LED "FAILURE" ILLUMINATED (FAULT).

The automatic control unit does not
detect any throughflow and stops the
pump to prevent greater damage from
occurring. There are 3 fuses, each of
which has a 10A rating. Use suitable
fuses if pumps with different current
input are operated.

The system remains stopped
until the problem has been
resolved by implementing
appropriate measures.

Check the status of the fuses
and replace the fuses if
necessary.
The motor winding and current
input of the pump should also
be checked. The pump is put
back into operation as soon as
the problems have been
resolved.
The INSTALLATION menu is then
displayed for entering the
appropriate amperage.

(ðSection6.2.2,Page16)

A6

A6
ACCUMULATION

Fault message after acknowledgement:
LED "FAILURE" ILLUMINATED (FAULT).

The system checks the status of the
accumulator at regular intervals.
This occurs only in pressure-dependent
mode.

2)

The system continues to operate
even if the pressure in the
accumulator is insufficient. It is
highly recommended that you
check the accumulator
immediately.

The system has detected that
the accumulator is damaged.
Check the pre-charge pressure
of the accumulator, the status of
the membrane and the spherical
accumulator and replace the
membrane if necessary.

(ðSection6.2.3,Page18)

None No display

-

-

- Check the electrical connection
and power supply.
Call in customer service.

2) No longer available from 2014 production date

9 Related Documents

22 of 28

Cervomatic EDP.2

9 Related Documents

9.1 Wiring diagrams

W

L3

V

L2

U

L1

400 V
230 V

A

B

C

D

Fig.3: Connections at automatic control unit

A Transformer fuse 250mA B Pump connection
C Power supply connection D Pump fuse 10A

Pump connection

W

U

V

M

W

U

V

M

3~400 V
3~230 V

1~230 V

Fig.4: Wiring diagram of automatic control unit to pump

Connection to power supply

3~400 V
3~230 V

1~230 V

L3

L3

L1

L1

L2

L2

Fig.5: Wiring diagram of automatic control unit to power supply

9 Related Documents

23 of 28

Cervomatic EDP.2

9.2 Additional electrical connections

NO

NC

C

MAX.

MIN.

A B

Fig.6: Additional electrical connections

A General fault message relay B Input for inlet tank monitoring

Cable entry

1

2

3

Fig.7: Cable entry in housing

1 Pump 2 Power supply
3 Inlet tank monitoring (optional)

10 EU Declaration of Conformity

24 of 28

Cervomatic EDP.2

10 EU Declaration of Conformity

Manufacturer: KSB SE & Co. KGaA

Johann-Klein-Straße 9

67227 Frankenthal (Germany)

The manufacturer herewith declares that the product:

Cervomatic EDP.2

Series code range: 2016w16 to 2018w52

▪ is in conformity with the provisions of the following Directives as amended from time to time:

– Electromagnetic Compatibility Directive 2014/30/EU
– Low-voltage Directive 2014/35/EU

The manufacturer also declares that:

▪ The following harmonised international standards have been applied:

– EN 60730-1, EN 60730-1-6, EN 60730-2-6
– EN 61000-6-2, EN 61000-6-3

The EU Declaration of Conformity was issued in/on:

Frankenthal, 1 February 2018

Joachim Schullerer

Head of Product Development Pump Systems and Drives

KSB SE & Co. KGaA

Johann-Klein-Straße 9

67227 Frankenthal

Index

25 of 28

Cervomatic EDP.2

Index

C

Commissioning/start-up16

D

Design10
Designation9
Disposal8

F

Faults

Causes and remedies20

N

Name plate9

O

Other applicable documents4

S

Safety5
Safety awareness6
Storage7

T

Transport7

KSB SE & Co. KGaA

Johann-Klein-Straße 9 • 67227 Frankenthal (Germany)
Tel. [phone]
www.ksb.com

5125.86/05-EN