Grundfos CUE Safety Instructions And Other Important Information

Marca: Grundfos

Model: CUE

Tip: Safety Instructions And Other Important Information

CUE

Safety instructions and other important information

GRUNDFOS INSTRUCTIONS

Installation and operating instructions

Other languages

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Quick guide

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English (GB)

Safety instructions and other important information

Original safety instructions

These safety instructions give a quick overview of the safety

precautions to be taken in connection with any work on this

product.

Observe these safety instructions during handling, installation,

operation, maintenance, service and repair of this product.

These safety instructions are a supplementary document, and all

safety instructions will appear again in the relevant sections of

the installation and operating instructions.

Keep these safety instructions at the installation site for future

reference.

Hazard statements

The symbols and hazard statements below may appear in

Grundfos installation and operating instructions, safety

instructions and service instructions.

The hazard statements are structured in the following way:

Notes

The symbols and notes below may appear in Grundfos

installation and operating instructions, safety instructions and

service instructions.

Intended use

CUE frequency converters can be used in both new and existing

installations. Local operation is performed via the operating panel

which has a graphic display showing the menu structure. The

menu structure uses the same system as Grundfos E-pumps.

Remote operation is performed via external signals, for instance

via digital inputs or GENIbus.

Receiving the product

Read this document and the online

version of the installation and

operating instructions before

installing the product. Installation

and operation must comply with

local regulations and accepted

codes of good practice.

DANGER

Indicates a hazardous situation

which, if not avoided, will result in

death or serious personal injury.

WARNING

Indicates a hazardous situation

which, if not avoided, could result

in death or serious personal injury.

CAUTION

Indicates a hazardous situation

which, if not avoided, could result

in minor or moderate personal

injury.

SIGNAL WORD

Description of hazard

Consequence of ignoring the warning.

- Action to avoid the hazard.

Observe these instructions for

explosion-proof products.

A blue or grey circle with a white

graphical symbol indicates that an

action must be taken.

A red or grey circle with a diagonal

bar, possibly with a black graphical

symbol, indicates that an action

must not be taken or must be

stopped.

If these instructions are not

observed, it may result in

malfunction or damage to the

equipment.

Tips and advice that make the work

easier.

WARNING

Crushing of feet

Death or serious personal injury

- Use safety shoes during transport and avoid

stacking the boxes.

CAUTION

Heavy lifting

Minor or moderate personal injury

- Use proper lifting equipment when handling the

product.

- Follow local regulations.

English (GB)

Inspecting the product

Check on receipt that the packaging is intact, and the unit is

complete. In case of damage during transport, contact the

transport company to complain.

Note that CUE is delivered in packaging which is not suitable for

outdoor storage.

Lifting CUE

Always lift the product using the lifting holes. Use a bar to avoid

bending the lifting holes.

Fig. 1 Recommended lifting method

Installation requirements

Safety regulations

• The OFF button of the operating panel does not disconnect

CUE from the power supply and must therefore not be used as

a safety switch.

• CUE must be earthed correctly and protected against indirect

contact according to local regulations.

• The leakage current to protective earth exceeds 3.5 mA.

• Enclosure class IP20/21 must not be installed freely

accessible, but only in a panel.

• Enclosure class IP54/55 must not be installed outdoors

without additional protection against weather conditions and

the sun.

• The STO function does not disconnect CUE from the power

supply and must therefore not be used as a safety switch.

• The STO does not prevent unwanted movement from external

forces on the motor, for example, back pressure, and motor

shaft must be covered.

Always observe local regulations as to cable cross-section,

short-circuit protection and overcurrent protection.

The general safety necessitates special considerations as to

these aspects:

• fuses and switches for overcurrent and short-circuit protection

• selection of cables (mains current, motor, load distribution and

relay)

• net configuration (IT, TN, earthing) safety on connecting inputs

and outputs (PELV).

IT mains

In connection with IT mains and earthed delta mains, the mains

voltage may exceed 440 V between phase and earth.

Aggressive environment

CUE contains a large number of mechanical and electronic

components. They are all vulnerable to environmental impact.

TM03 9896 4607

Any installation, maintenance and

inspection must be carried out by

trained persons.

WARNING

Sharp element

Death or serious personal injury

- Use safety knives and protective gloves when

unpacking the product.

WARNING

Heavy lifting

Death or serious personal injury

- Use proper lifting equipment when handling the

product.

- Follow local regulations.

WARNING

Electric shock

Death or serious personal injury

- Before starting any work on the product, make

sure that the power supply has been switched off

at least for as long as stated below and that it

cannot be accidentally switched on.

- Touching the electrical parts may be fatal, even

after CUE has been switched off.

Do not connect 380-500 V CUE

frequency converters to mains

supplies with a voltage between

phase and earth of more than 440

CUE must not be installed in an

environment where the air contains

liquids, particles or gases which

may affect and damage the

electronic components.

English (GB)

Reduction at low air pressure

PELV = Protective Extra Low Voltage.

At low air pressure, the cooling capacity of air is reduced, and

CUE automatically reduces the performance to prevent overload.

It may be necessary to select a CUE unit with a higher

performance.

Mechanical installation

The individual CUE cabinet sizes are characterised by their

enclosures. The table in section Motor connection, enclosures

shows the relationship between enclosure class and enclosure

type.

Enclosure types

Products with integrated STO function must be installed in an

IP54 cabinet according to IEC 60529 or in equivalent

environment. In special applications, a higher IP degree may be

necessary.

Space requirements and air circulation

CUE units can be mounted side by side, but as a sufficient air

circulation is required for cooling, these requirements must be

met:

• Sufficient free space above and below the CUE cabinet. See

table below.

• Ambient temperature up to 50 °C (122 °F).

• Hang the CUE cabinet directly on the wall, or fit it with a back

plate. See fig. 2.

Fig. 2 CUE hung directly on the wall or fitted with a back

plate

Required free space above and below the CUE cabinet

For information about enclosures, see table in section Motor

connection, enclosures.

Mounting

1. Mark and drill holes. See section Dimensions and weights.

2. Fit the screws at the bottom, but leave loose. Mount CUE, and

tighten the four screws.

Fig. 3 Drilling of holes in the wall

Mounting on the floor

By means of a pedestal (optional), CUE can also be mounted on

the floor.

1. Mark the mounting holes on the floor. See fig. 1.

2. Drill the holes.

3. Mount the pedestal on the floor.

4. Mount CUE on the pedestal using the enclosed screws.

At altitudes above 2000 m (6600

ft), the PELV requirements cannot

be met.

TM03 8859 2607

Enclosure Space [mm (in)]

A2, A3, A4, A5 100 (3.9)

B1, B2, B3, B4, C1, C3 200 (7.9)

C2, C4, D1h, D2h 225 (8.9)

The user is responsible for

mounting CUE securely on a firm

surface.

TM03 8860 2607

WARNING

Crushing of feet

Death or serious personal injury

- CUE is very heavy and may fall if the pedestal is

not anchored to the floor.

The user is responsible for

mounting CUE securely on a firm

surface.

See the pedestal kit instructions for

further information.

Pos.

D1h

[mm]

D2h

[mm]

1 400 400

2 325 420

3 283.8 378.8

4 240 240

5 4 x 14 4 x 14

6 217 317

English (GB)

Electrical connection

Fig. 4 Example of three-phase mains connection of CUE with

main switch, backup fuses and additional protection

Protection against electric shock, indirect contact

Protection against short circuit, fuses

CUE and the supply system must be protected against short

circuit.

Grundfos demands that the backup fuses mentioned in section

Cable cross-section to signal terminals are used for protection

against short circuit.

CUE offers complete short-circuit protection in case of a short

circuit on the motor output.

Additional protection

If CUE is connected to an electrical installation where an earth

leakage circuit breaker (ELCB/RCD) is used as additional

protection, the circuit breaker must be of a type marked with the

following symbols:

The circuit breaker is type B.

The total leakage current of all the electrical equipment in the

installation must be taken into account.

The leakage current of CUE in normal operation can be seen in

the CUE installation and operating instructions.

During startup and in asymmetrical supply systems, the leakage

current can be higher than normal and may cause the ELCB/RCD

to trip.

EMC-correct installation

Fig. 5 QR code to CUE installation and operating instructions

WARNING

Electric shock

Death or serious personal injury

- Before starting any work on the product, make

sure that the power supply has been switched off

and that it cannot be accidentally switched on. See

Installation requirements.

- Touching the electrical parts may be fatal, even

after CUE has been switched off.

The owner or installer is

responsible for ensuring correct

earthing and protection according

to local standards.

For products with STO, ensure a

short-circuit protection of the cable

between terminal 37 and the

external safety device.

Security measures are the

responsibility of the user.

The frequency converter

parameters can be

password-protected.

TM03 8525 1807

ELCB/RCD

CAUTION

Electric shock

Minor or moderate personal injury

- CUE must be earthed correctly and protected

against indirect contact according to local

regulations.

The leakage current to protective

earth exceeds 3.5 mA, and a

reinforced earth connection is

required.

WARNING

Electric shock

Death or serious personal injury

- The leakage current to protective earth exceeds

3.5 mA.

The motor cable must be screened

for CUE to meet EMC

requirements.

ELCB/RCD

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English (GB)

Mains and motor connection

Wiring diagram

Fig. 6 Wiring diagram, three-phase mains connection

Mains connection

1. Connect the earth conductor to terminal 95 (PE).

2. Connect the mains conductors to terminals 91 (L1), 92 (L2),

93 (L3).

3. Fix the mains cable with a cable clamp.

Motor connection, enclosures

1. Connect the earth conductor to terminal 99 (PE).

2. Connect the motor conductors to terminals 96 (U), 97 (V), 98

(W) of the motor plug.

3. Fix the screened cable with a cable clamp.

Conductor cross-section ≤ 95 mm

( ≤ 4/0 AWG)

Conductor cross-section ≥ 95 mm

( ≥ 4/0 AWG).

Check that the mains voltage and

frequency correspond to the values

on the nameplate of CUE and the

motor.

The motor cable must be screened

for CUE to meet EMC

requirements.

TM03 8799 2507

Terminal Function

91 (L1)

Three-phase mains supply92 (L2)

93 (L3)

95/99 (PE) Earth connection

96 (U)

Three-phase motor connection, 0-100 % of

mains voltage

97 (V)

98 (W)

Enclosure

Torque Nm [ft (lb)]

Mains Motor

Protective

earth

Relay

A2 1.8 (1.3) 1.8 (1.3) 3 (2.2) 0.6 (0.4)

A3 1.8 (1.3) 1.8 (1.3) 3 (2.2) 0.6 (0.4)

A4 1.8 (1.3) 1.8 (1.3) 3 (2.2) 0.6 (0.4)

A5 1.8 (1.3) 1.8 (1.3) 3 (2.2) 0.6 (0.4)

B1 1.8 (1.3) 1.8 (1.3) 3 (2.2) 0.6 (0.4)

B2 4.5 (3.3) 4.5 (3.3) 3 (2.2) 0.6 (0.4)

B3 1.8 (1.3) 1.8 (1.3) 3 (2.2) 0.6 (0.4)

B4 4.5 (3.3) 4.5 (3.3) 3 (2.2) 0.6 (0.4)

C1 10 (7.4) 10 (7.4) 3 (2.2) 0.6 (0.4)

/24

(10.3

17.7

)

/24

(10.3

17.7

)

3 (2.2) 0.6 (0.4)

C3 10 10 3 (2.2) 0.6 (0.4)

/24

(10.3

17.7

)

/24

(10.3

17.7

)

3 (2.2) 0.6 (0.4)

D1h 19-40 19-40 3 (2.2) 0.6 (0.4)

D2h 19-40 19-40 3 (2.2) 0.6 (0.4)

English (GB)

STO installation, optional

Fig. 7 STO wiring

Activating the optional STO function

The STO function is activated by removing the voltage at terminal

37 of the frequency converter. By connecting the frequency

converter to external safety devices providing a safe delay, an

installation for a Safe Stop 1 is obtained. External safety devices

need to fulfil Cat./PL or SIL when connected to terminal 37.

The STO function can be used for the following motor types:

• asynchronous

• synchronous

• permanent magnet motors.

When terminal 37 is activated, the frequency converter issues an

alarm, trips the unit, and coasts the motor to a stop. A manual

restart is required. Use the STO function to stop the frequency

converter in emergency stop situations. In normal operating

mode, the STO terminal 37 must be deactivated to start the

motor.

Connecting the signal terminals

Connect the signal cables according to the guidelines for good

practice to ensure EMC-correct installation.

• Use screened signal cables with a conductor cross-section of

minimum 0.5 mm

and maximum 1.5 mm

• Use a 3-conductor screened bus cable in new systems.

Connection of a thermistor (PTC) to CUE

The connection of a thermistor (PTC) in a motor to CUE requires

an external PTC relay.

The requirement is based on the fact that the thermistor in the

motor only has one layer of insulation to the windings. The

terminals in CUE require two layers of insulation since they are

part of a PELV circuit.

A PELV circuit provides protection against electric shock. Special

connection requirements apply to this type of circuit. The

requirements are described in EN 61800-5-1.

In order to maintain PELV, all connections made to the control

terminals must be PELV. For example, the thermistor must have

reinforced or double insulation.

Wiring diagram, MCB 114

See fig. 14 in the appendix.

Servicing the product

Conduct a functional test every 12 months to detect any failure or

malfunction of the STO functionality.

To conduct the functional test, perform the following steps:

• Remove the 24 V DC voltage supply at terminal 37.

• Check if the LCP displays the alarm Safe Stop A68.

• Verify that the frequency converter trips the unit.

• Verify that the motor is coasting and comes to a complete

stop.

• Verify that the motor cannot be started.

• Reconnect the 24 V DC voltage supply to terminal 37.

• Verify that the motor is not started automatically and restarts

only by giving a reset signal (via bus, Digital I/O, or reset

button).

Enclosures

See nameplate and install according to enclosure type.

Enclosure

Appendix

Mains Motor

fig. 2 fig. 3

fig. 4 fig. 5

fig. 6 fig. 7

B3 fig. 8

B4 fig. 9

fig. 10

C3 fig. 11

C4 fig. 12

D1h

fig. 13

D2h

TM07 4594 1919

Pos. Description

1 Reset button

2 Safety relay (cat. 3, PL d or SIL2)

3 Emergency stop button

Short-circuit protected cable if the product is not

installed inside an IP54 cabinet.

When using Pt100 with 3-wire

cable, the resistance must not

exceed 30 Ω.

CAUTION

Electric shock

Minor or moderate personal injury

- Before starting any work on the product, make

sure that the power supply has been switched off

and that it cannot be accidentally switched on. See

Installation requirements

- Touching the electrical parts may be fatal, even

after CUE has been switched off.

English (GB)

Operating conditions

Cable requirements

Cable cross-section to signal terminals

Non-UL fuses and conductor cross-section to mains and

motor, for installations outside North America

Screened motor cable, unscreened supply cable. AWG. See

section UL fuses and conductor cross-section to mains and

motor, for installations in North America.

Relative humidity 5-95 % RH

Ambient temperature

Max. 50 °C

(122 °F)

Average ambient temperature over 24 hours

Max. 45 °C

(113 °F)

Minimum ambient temperature at full

operation

0 °C (32 °F)

Minimum ambient temperature at reduced

operation

-10 °C (14 °F)

Temperature during storage and transport

-25 to 65 °C

(-13 to 149 °F)

Storage duration Max. 6 months

Maximum altitude above sea level without

performance reduction

1000 m (3280 ft)

Maximum altitude above sea level with

performance reduction

3000 m (9840 ft)

Maximum length, screened motor cable 150 m (500 ft)

Maximum length, unscreened motor cable 300 m (1000 ft)

Maximum length, signal cable 300 m (1000 ft)

Always comply with local

regulations as to cable

cross-sections.

Maximum cable cross-section to signal

terminals, rigid conductor

1.5 mm

(14 AWG)

Maximum cable cross-section to signal

terminals, flexible conductor

1.0 mm

(18 AWG)

Minimum cable cross-section to signal

terminals

0.5 mm

(20 AWG)

Typical shaft

power P2

Maximum

fuse size

Fuse

type

Maximum conductor

cross-section

[kW (hp)] [A] [mm

]

1 x 200-240 V

1.1 (1.5) 20 gG 4

1.5 (2) 30 gG 10

2.2 (3) 40 gG 10

3 (4) 40 gG 10

3.7 (5) 60 gG 10

5.5 (7.5) 80 gG 10

7.5 (10) 100 gG 35

3 x 200-240 V

0.75 (1) 10 gG 4

1.1 (1.5) 20 gG 4

1.5 (2) 20 gG 4

2.2 (3) 20 gG 4

3 (4) 32 gG 4

3.7 (5) 32 gG 4

5.5 (7.5) 63 gG 10

7.5 (10) 63 gG 10

11 (15) 63 gG 10

15 (20) 80 gG 35

18.5 (25) 125 gG 50

22 (30) 125 gG 50

30 (40) 160 gG 50

37 (50) 200 aR 95

45 (60) 250 aR 120

3 x 380-500 V

0.55 (0.75) 10 gG 4

0.75 (1) 10 gG 4

1.1 (1.5) 10 gG 4

1.5 (2) 10 gG 4

2.2 (3) 20 gG 4

3 (4) 20 gG 4

4 (5) 20 gG 4

5.5 (7.5) 32 gG 4

7.5 (10) 32 gG 4

11 (15) 63 gG 10

15 (20) 63 gG 10

18.5 (25) 63 gG 10

22 (30) 63 gG 35

30 (40) 80 gG 35

37 (50) 100 gG 50

45 (60) 125 gG 50

55 (75) 160 gG 50

75 (100) 250 aR 95

90 (125) 250 aR 120

110 (150) 300 gG 2 × 70

132 (200) 350 gG 2 × 70

160 (250) 400 gG 2 × 185

200 (300) 500 gG 2 × 185

250 (350) 600 gR 2 × 185

3 x 525-600 V

0.75 (1) 10 gG 4

1.1 (1.5) 10 gG 4

1.5 (2) 10 gG 4

2.2 (3) 20 gG 4

3 (4) 20 gG 4

4 (5) 20 gG 4

5.5 (7.5) 32 gG 4

7.5 (10) 32 gG 4

3 x 525-690 V

11 (15) 63 gG 35

15 (20) 63 gG 35

18.5 (25) 63 gG 35

22 (30) 63 gG 35

30 (40) 63 gG 35

37 (50) 80 gG 95

45 (60) 100 gG 95

55 (75) 125 gG 95

75 (100) 160 gG 95

90 (125) 160 gG 95

110 (150) 225 - 2 × 70

132 (200) 250 - 2 × 70

160 (250) 350 - 2 × 70

200 (300) 400 - 2 × 185

250 (350) 500 - 2 × 185

Typical shaft

power P2

Maximum

fuse size

Fuse

type

Maximum conductor

cross-section

[kW (hp)] [A] [mm

]

English (GB)

UL fuses and conductor cross-section to mains and motor, for installations in North America

Typical shaft

power P2

Fuse type Maximum

conductor

cross-section

Bussmann

RK1/E1958/

JFHR2

Bussmann

J/E4273

T/JDDZ

Bussmann

T/E4274

H/JDDZ

SIBA RK1/

Bussmann

E125085

JFHR2

Littel Fuse

RK1/SIBA

E180276

RKI/JDDZ

Ferraz-Shawmut

CC/Littel Fuse

E71611 JFHR2

Ferraz-Shawmut

RK1/E60314 JFHR2

[kW (hp)] [AWG]

1 x 200-240 V

1.1 (1.5) KTN-R20 - - - - - - 10

1.5 (2) KTN-R30 - - - - - - 7

2.2 (3) KTN-R40 - - - - - - 7

3 (4) KTN-R40 - - - - - - 7

3.7 (5) KTN-R60 - - - - - - 7

5.5 (7.5) - - - - - - - 7

7.5 (10) - - - - - - - 2

3 x 200-240 V

0.75 (1) KTN-R10 JKS-10 JJN-10 5017906-010 KTN-R10 ATM-R10 A2K-10R 10

1.1 (1.5) KTN-R20 JKS-20 JJN-20 5017906-020 KTN-R20 ATM-R20 A2K-20R 10

1.5 (2) KTN-R20 JKS-20 JJN-20 5017906-020 KTN-R20 ATM-R20 A2K-20R 10

2.2 (3) KTN-R20 JKS-20 JJN-20 5017906-020 KTN-R20 ATM-R20 A2K-20R 10

3 (4) KTN-R30 JKS-30 JJN-30 5012406-032 KTN-R30 ATM-R30 A2K-30R 10

3.7 (5) KTN-R30 JKS-30 JJN-30 5012406-032 KTN-R30 ATM-R30 A2K-30R 10

5.5 (7.5) KTN-R50 JKS-50 JJN-50 5012406-050 KLN-R50 - A2K-50R 7

7.5 (10) KTN-R50 JKS-60 JJN-60 5012406-050 KLN-R60 - A2K-50R 7

11 (15) KTN-R60 JKS-60 JJN-60 5014006-063 KLN-R60 A2K-60R A2K-60R 7

15 (20) KTN-R80 JKS-80 JJN-80 5014006-080 KLN-R80 A2K-80R A2K-80R 2

18.5 (25) KTN-R125 JKS-150 JJN-125 2028220-125 KLN-R125 A2K-125R A2K-125R 1/0

22 (30) KTN-R125 JKS-150 JJN-125 2028220-125 KLN-R125 A2K-125R A2K-125R 1/0

30 (40) FWX-150 - - 2028220-150 L25S-150 A25X-150 A25X-150 1/0

37 (50) FWX-200 - - 2028220-200 L25S-200 A25X-200 A25X-200 4/0

45 (60) FWX-250 - - 2028220-250 L25S-250 A25X-250 A25X-250 250 MCM

3 x 380-500 V

0.55 (0.75) KTS-R10 JKS-10 JJS-10 5017906-010 KTN-R10 ATM-R10 A2K-10R 10

0.75 (1) KTS-R10 JKS-10 JJS-10 5017906-010 KTN-R10 ATM-R10 A2K-10R 10

1.1 (1.5) KTS-R10 JKS-10 JJS-10 5017906-010 KTN-R10 ATM-R10 A2K-10R 10

1.5 (2) KTS-R10 JKS-10 JJS-10 5017906-010 KTN-R10 ATM-R10 A2K-10R 10

2.2 (3) KTS-R20 JKS-20 JJS-20 5017906-020 KTN-R20 ATM-R20 A2K-20R 10

3 (4) KTS-R20 JKS-20 JJS-20 5017906-020 KTN-R20 ATM-R20 A2K-20R 10

4 (5) KTS-R20 JKS-20 JJS-20 5017906-020 KTN-R20 ATM-R20 A2K-20R 10

5.5 (7.5) KTS-R30 JKS-30 JJS-30 5012406-032 KTN-R30 ATM-R30 A2K-30R 10

7.5 (10) KTS-R30 JKS-30 JJS-30 5012406-032 KTN-R30 ATM-R30 A2K-30R 10

11 (15) KTS-R40 JKS-40 JJS-40 5014006-040 KLS-R40 - A6K-40R 7

15 (20) KTS-R40 JKS-40 JJS-40 5014006-040 KLS-R40 - A6K-40R 7

18.5 (25) KTS-R50 JKS-50 JJS-50 5014006-050 KLS-R50 - A6K-50R 7

22 (30) KTS-R60 JKS-60 JJS-60 5014006-063 KLS-R60 - A6K-60R 2

30 (40) KTS-R80 JKS-80 JJS-80 2028220-100 KLS-R80 - A6K-80R 2

37 (50) KTS-R100 JKS-100 JJS-100 2028220-125 KLS-R100 - A6K-100R 1/0

45 (60) KTS-R125 JKS-150 JJS-150 2028220-125 KLS-R125 - A6K-125R 1/0

55 (75) KTS-R150 JKS-150 JJS-150 2028220-160 KLS-R150 - A6K-150R 1/0

75 (100) FWH-220 - - 2028220-200 L50S-225 - A50-P225 4/0

90 (125) FWH-250 - - 2028220-250 L50S-250 - A50-P250 250 MCM

110 (150) FWH-300 JJS-300 NOS-300 170M3017 2028220-38 L50S-300 A50-P300 2 x 2/0

132 (200) FWH-350 JJS-350 NOS-350 170M3018 2028220-38 L50S-350 A50-P350 2 x 2/0

160 (250) FWH-400 JJS-400 NOS-400 170M4012 206xx32-400 L50S-400 A50-P400 2 x 350 MCM

200 (300) FWH-500 JJS-500 NOS-500 170M4014 206xx32-500 L50S-500 A50-P500 2 x 350 MCM

250 (350) FWH-600 JJS-600 NOS-600 170M4016 206xx32-600 L50S-600 A50-P600 2 x 350 MCM

----

Bussmann

E125085

JFHR2

SIBA

E180276

JFHR2

Ferraz-Shawmut

E76491