FläktGroup eQ RANGE EQRB RHE L-3.4 Installation guide

Brand: FläktGroup

Model: eQ RANGE EQRB RHE L-3.4

Type: Installation guide

FläktGroup eQ RANGE EQRB RHE L-3.4 is a speed controlled, permanent installation drive system specifically adapted to drive rotary heat exchangers. The unit comes with the motor and indicates speed and operating status of the unit via LEDs.

Here are some of the key capabilities and possible use cases of the FläktGroup eQ RANGE EQRB RHE L-3.4:

Controllable rotation: The direction of rotation of the motor is reversible and can be set using DIP switches.
Variable speed: The motor speed can be controlled using a 0-10VDC, 2-10VDC, 0-20mA, 4-20mA, or Modbus RTU control signal.
Built-in protection: The drive system has built-in protection against snapped belts, motor overload, short-circuits, and voltage faults.

Here are some of the key capabilities and possible use cases of the FläktGroup eQ RANGE EQRB RHE L-3.4:

Controllable rotation: The direction of rotation of the motor is reversible and can be set using DIP switches.
Variable speed: The motor speed can be controlled using a 0-10VDC, 2-10VDC, 0-20mA, 4-20mA, or Modbus RTU control signal.
Built-in protection: The drive system has built-in protection against snapped belts, motor overload, short-circuits, and voltage faults.

Fläkt Woods 9291 GB 2014.12.05 1 Specifications are subject to change without prior notice.

Installation and maintenance instructions

Installation instructions, drive system

EQRB, L=3.4 sizes 005-072

General description

A speed controlled drive system specifically adapted to

drive rotary heat exchangers.

No tuning is necessary. All control inputs are galvani-

cally isolated from the mains. The unit is supplied with

the motor.

The direction of rotation of the motor is reversible.

Enclosure class IP54.

Safety precautions

Control system for rotary heat exchanger EQRB, L=3,4

Sizes 005-018

Sizes 020-072

Important!

– Read through the entire instruction

manual carefully before unpacking,

installing and using the equipment.

– The installation must be carried out

by authorised personnel.

– Follow the general measures and

regulations for the installation and

operation of electrical installations.

– Follow local measures and regula-

tions to protect against personal

injury and mechanical damage.

– The drive system is intended for

permanent installation.

– Cables must not be connected or

disconnected while the power supply

is on.

– Check that the equipment is correctly

connected before it is taken into

operation. See the instructions under

“Connection specification”, page 2.

– Faults occurring due to incorrect

installation or operation are covered.

During operation

– The unit may not be opened or disas-

sembled during operation.

Disassembly and disposal

– The product is designed to comply

with the RoHS directive and must

be handled and recycled in accordance

with locally applicable legislation.

Regarding the control logic and operation:

During start up and after each time

the AHU has been stopped, it is recom-

mended that the exhaust fan operates

during 1 minute before the supply fan is

started.

Fläkt Woods 9291 GB 2014.12.05 2 Specifications are subject to change without prior notice.

Installation and maintenance instructions

Connection specification

Mains

The power supply is connected on terminal block P1 N,

L, PE, 230VAC +-15% 50/60Hz. The drive system shall

always be preceded by an external fuse 10AT.

Current

Rated current 1.0A.

Motor

The motor is connected on terminal blocks P6 and P7.

The motor has been customised and cannot be replaced

with a similar one.

Functional description

Cleaning mode

When there is no control signal the heat exchanger rota-

tes 30° every 5 minutes.

Communication

The drive unit has built-in Modbus RTU communication

via RS485, terminal block P3 terminals 1 (A+), 2 (B-) and 3

(ref.). The preset parameters for communication are:

Address: 30

Baud rate/Speed: 9600

Parity bit: N, none

Stop bit: 1

Data bits: 8

For a complete Modbus register see Appendix 1:

Communication can be used for all drive system

functions.

Defrosting

It is possible to connect a differential thermostat or pres-

sure monitor to control defrosting on terminal block P3

terminals 4 and 5. When the contact is closed the speed

is reduced to 2 rpm.

Cooling recovery

When terminals 6 and 7 on terminal block P3 are closed

the rotor goes into cooling recovery mode and the speed

increases and remains constant at 25 rpm, irrespective

of control signal.

Rotation sensor

The drive system has a built-in rotation sensor that

detects whether the belt has snapped. Belt testing takes

place at set time intervals depending on the current

speed.

Control signal

The control signal is connected on terminal block P3

terminals 8 and 9.

The control system can handle several different input

signals:

• 0-10VDC

• 2-10VDC

• 0-20mA

• 4-20mA

• ModbusRTU

The choice of control signal is made using dip switches

11 and 12 corresponding to level and type respectively.

The motor speed follows a predetermined linearisation

function proportional to the degree of efficiency of the

rotor.

Control system for rotary heat exchanger EQRB, L=3,4

DIP switch ON position OFF position

9 Speed: 9600

bits: 8

Parity: None

Stop bits: 1 (8N1)

Preprogrammed:

Speed: 19200

Bits: 8

Parity: None

Stop bits: 1

In the off position the

values can be changed

by writing to the holding

10 Address 30 Address 31

The address can be

changed between

0-256 by writing to the

holding register 4x0034

Modification

Issue

Date

Sign.

otherwise disclosed to any third party without our consent. Contraventions will be prosecuted.

This drawing and its contents is the property of the company and may not be copied or

Formular dwg.

Formulärritn.

Jönköping

2012-10-03

21-

Fläkt Woods AB

Issue

Drivenhet

Styrkort

Ritning nr Drawing no

J8007857

1:1

Appr

Check

Scale

Date

Drawn by

Dept.

VariantVariant

C. Axelsson

2012-10-03

Qty. Qty.

Item no.

Internal article no.

Description

Version 5

No Designation

1 Mains connection

2 Motor phases

3 Hall sensor

4 Modbus, Defrosting, Cooling

recovery, Control signal

5 Alarm output

6 DIP switches

7 Test button

8 LED Indication

8 7 6

1 2 3 4

C NO NC

Installation and maintenance instructions

Fläkt Woods 9291 GB 2014.12.05 3 Specifications are subject to change without prior notice.

Control system for rotary heat exchanger EQRB, L=3,4

Alarm relay

Relay output max. 5A, 250VAC. The contact switches in

the event of an alarm.

Run indicator

The drive system indicates, via LEDs, the speed and

operating status of the unit at any point. See table.

Green Red Indication Alarm relay

Steady illumina-

tion

Voltage without

rotation

Flashes in

proportion to

the speed of

the motor.

Speed x 0.5Hz

Extinguished No voltage

Extinguished No alarm Switches

2 ﬂashes Snapped belt Switches

3 ﬂashes Motor locked/

blocked

Switches

3 ﬂashes Timeout target

speed

Switches

4 ﬂashes High/Low

voltage

Switches

5 ﬂashes Motor sensor

fault

5 ﬂashes Cooling

recovery and

defrosting at

the same time

5 ﬂashes High temp.

5 ﬂashes All DIP swit-

ches in the ON

position

Alarm Alarm output Description Info

Snapped belt Yes If the belt

snaps or the

rotor stops the

relay switches.

Reversible

Voltage fault Yes If the supply

voltage is too

high or too low

the relay swit-

ches and the

rotor stops.

Reversible

Overload fault Yes If the motor is

overloaded the

relay switches

and the rotor

stops.

Reversible

Short-circuit Yes If there is a

short-circuit in

the motor the

relay switches.

Permanent

Fault codes

Alarm Fault codes

Low voltage 1

High voltage 2

Snapped belt 4

Motor locked/blocked 8

Motor sensor fault 16

Cooling recovery/Defrosting 32

High temperature 64

DIP switch fault 128

AWD 256

Target speed timeout 512

Fläkt Woods 9291 GB 2014.12.05 4 Specifications are subject to change without prior notice.

Installation and maintenance instructions

Control system for rotary heat exchanger EQRB, L=3,4

Rotor direction of rotation

Supply air

The direction of rotation is changed by changing dip

switch 1 and is executed by switching on the power.

DIP switch Corresponding

value

Position Value

2 1 OFF 0

3 2 ON 2

4 4 ON 4

5 8 OFF 0

6 16 ON 16

7 32 OFF

Total 63

+ – + –

DIP switch settings

The gear ratio is set at the factory.

The correct activation of the drive system requires that

DIP switches 2-7 be set according to the Binary Coded

Decimal (BCD) coding of the ratio between the rotor and

belt pulley.

For example. Rotor diameter 1000 mm, belt pulley

diameter 38 mm and belt diameter 8 mm, gives ratio

of 1000+8/38+8=22 and the BCD coding is as follows

011010.

Switch

12 11 10 9 8 7 6 5 4 3 2 1 Value Function

1 1 Anti-clockwise

0 0 Clockwise

1 1 1 1 1 1 63 Not set/Fault

111110 62

Program-

mable reg.

0x0031

000000 0

0–61 Deci-

mal value for

gearing

1 Large motor

0 Small motor

1 9600 8N1

0 Std.

Reg.

0x0035-

0x0037

(Std.19200

8N1)

1 Addr: 30

0 Std.

Reg. 0x0034

(Std. Addr:

31)

1 0-10V/

0-20mA

0 2-10V /

4-20mA

1 Control signal

voltage

0 Control signal

current

Fläkt Woods 9291 GB 2014.12.05 5 Specifications are subject to change without prior notice.

Installation and maintenance instructions

Control system for rotary heat exchanger EQRB, L=3,4

If necessary the entire control unit must be replaced

including the bracket and motor.

Troubleshooting

Check that the installation has been carried out correct-

ly. For example, that the cables are properly connected

to the correct terminal block and that the dip switches

are set correctly.

Observation/

indication

Fault cause/action:

No LED lit. Check that there is 230VAC ±10%

on the mains terminal block. If the

mains voltage is correct replace the

control unit.

The green LED is

flashing slowly/

cleaning mode

signal

- low control signal

Check that the cables are correctly

connected.

Check the DIP switch.

Vary the control signal between mini-

mum and maximum 0-10 V (2-10 V).

Check by strapping P3 6 and 7, the

motor should now speed up to its

maximum speed.

The motor is not

turning despite a

control signal.

Gearing incorrect.

Check DIP switch 2-7.

The rotation

sensor is gene-

rating an alarm

despite the belt

being intact.

Contact Fläkt Woods.

Observation/

indication

Fault cause/action:

The red LED flashes

twice.

Indicates a snapped belt.

Check that the rotor is no stiffer than

normal, or whether the belt has snap-

ped.

The red LED flashes

three times.

The ramp time to the desired speed

is too long. Check that the rotor is no

stiffer than normal, or locked.

The red LED flashes

four times.

Check the mains voltage.

The red LED flashes

five times.

Sensor problem.

Check the DIP switch.

Check that cooling recovery and

defrosting are not taking place at

the same time

The rotation sensor

is not generating

an alarm despite

the belt having

snapped.

Contact Fläkt Woods.

The motor is rota-

ting in the wrong

direction.

Switch off the power and change DIP

switch 1. Then switch the power on

again.

The motor runs

at full speed even

when the control

signal is low.

Check that the cooling recovery

terminal block is not strapped (6 and

7), or Modbus register 4x0029 is

set to ”1”.

Fläkt Woods 9291 GB 2014.12.05 6 Specifications are subject to change without prior notice.

Installation and maintenance instructions

Control system for rotary heat exchanger EQRB, L=3,4

Write

Comment Type Min Max Default

3 x 0001 MbusVer Protocol version Read Unsigned 1 65536 1

3 x 0002 HW Hardware version Read Unsigned 1 65536 1

3 x 0003 SW Software version Read Unsigned 1 65536 -

3 x 0004 Nrot Total number of revolu-

tions that the rotor has

rotated since installation

Read Unsigned 0 65536 0

3 x 0005 Nrem Total number of alarms

for drive belt faults

Read Unsigned 0 65536 0

3 x 0006 Nlocked Total number of alarms

for motor faults

Read Unsigned 0 65536 0

3 x 0007 Nsp Total number of alarms

for voltage faults

Read Unsigned 0 65536 0

3 x 0008 Ngiv Total number of alarms

for sensor faults

Read Unsigned 0 65536 0

3 x 0009 M1 Motor size Read Unsigned 1 2 -

3 x 0010 n1 Size of the drive pulley

on the motor

Read According to DIP switch Unsigned 0 63 -

3 x 0012 n Current motor speed Read (RPM) Signed -2000 2000 -

3 x 0013 n3 Current calculated

speed of the rotor

Read Motor speed/gearing (RPM) Signed 0 25 -

3 x 0014 Switch DIP switch Read DIP 1-11 whole number value Unsigned 0 2048 -

3 x 0015 Mode Current operating mode Read 0 = Initiation

1 = Heating

2 = Cooling

3 = Purging

4 = Defrosting

5 = Test button

6 = Belt test

7 = Standstill

8 = Conﬁguration

9 = Fault

10 = Stop

11 = Motor test

Unsigned 10 0

3 x 0016 Signal Read off control signal Read Read off value as a % Unsigned 0 100 0

3 x 0017 Current Average current Read Filter 5ms Unsigned 0 70 -

3 x 0018 Belt_timer1 Countdown before belt

test 1 in seconds

Read Test taking place in 0 seconds Unsigned 0 65536 -

3 x 0019 Belt_timer2 Countdown before belt

test 2 in seconds

Read Test taking place in 0 seconds Unsigned 0 65536 -

3 x 0020 Purge timer Countdown before

purging (seconds)

Read Purging taking place in 0

seconds

Unsigned 0 65536 -

3 x 0021 Rot_count_msb Total number of revolu-

tions that the rotor has

rotated since installation

(most signiﬁcant bits)

Read Revolutions = 3x0021 *

65535 + 3x0022

Unsigned 0 65536 -

3 x 0022 Rot_count_lsb Total number of revolu-

tions that the rotor has

rotated since installation

(least signiﬁcant bits)

Read Revolutions = 3x0021 *

65535 + 3x0022

Unsigned 0 65536 -

3 x 0023 Ramp timeout 5 minute countdown to

the rotation alarm delay

Read Value in seconds Unsigned 0 65536 300

3 x 0024 Drive_temp Electronics temperature Read Degrees Celsius Unsigned 0 65536 -

3 x 0025 Smps_temp Processor temperature Read Degrees Celsius Unsigned 0 65536 -

Table 1

Fläkt Woods 9291 GB 2014.12.05 7 Specifications are subject to change without prior notice.

Installation and maintenance instructions

Control system for rotary heat exchanger EQRB, L=3,4

write

Comment Min Max Default

4 x 0001 Setup Request to go into

setup mode/leave

setup mode. And write

to E2. The motor will

be switched off in this

mode.

Read/

Write

0. Exit SetupMode

1. Enter SetupMode

2. Write param to E2

Unsigned 0 2 0

4 x 0002 Dir Direction of rotation of

the motor

Read/

Write

0 = DIP value, 1= inverted

direction to the DIP switch

Unsigned 0 1 0

4 x 0007 Larm Reads out the applicable

alarm code/Reset of

the applicable alarm

code

Read/

Write

0 = Alarm reset

0 x 0001 Low voltage

0 x 0002 High voltage

0 x 0004 Snapped belt

0 x 0008 Motor blocked

0 x 0010 Sensor fault

0 x 0020 Cooling recovery

and defrosting

0 x 0040 High temperature

0 x 0080 DIP switch fault

0 x 0100 AWD

0 x 0200 Target speed

If several faults occur at the

same they are added together

Unsigned 0 65536 0

4 x 0008 Nd Dead band in the speed

signal (resolution 0.01

rpm)

Read/

Write

Unsigned 1 250 30

4 x 0029 Heat/cool Heat recovery max.

20 rpm

cooling recovery max.

25 rpm

Heating/cooling.

Reads/writes the appli-

cable operational case

Read/

Write

Not saved in the event of a

power outage

Unsigned 0 1 0

4 x 0030 Test Activate test mode Read/

Write

1= test mode, 0 = Normal

operation

Unsigned 0 1 0

4 x 0031 Relation The ratio between

the rotor and pulley

diameter

Read/

Write

Gearing ratio in the event of

DIP=62. Not saved in the event

of a power outage

Unsigned 0 65536

4 x 0033 Ctrl Control signal Read/

Write

0 -1000 ‰ Unsigned 0 1000 0

4 x 0034 Adress Modbus address Read/

Write

Activated through the DIP

switch. Not saved in the event

of a power outage

Unsigned 1 255 31

4 x 0035 Baud Data speed/100 Read/

Write

Activated through the DIP

switch. Not saved in the event

of a power outage

Unsigned 0 4 19200

4 x 0036 Par Parity (0=N, 1=E, 2=O) Read/

Write

Unsigned 0 2 0

4 x 0037 Stop Number of stop bits Read/

Write

0 -1 Unsigned 0 1 0

4 x 0038 Rst Factory reset Read/

Write

1 = Reset Unsigned 0 1 0

4 x 0039 Defrost Activate defrosting Read/

Write

1 = Activate Unsigned 0 1 0

4 x 0040 Purge time Purging time interval Read/

Write

Min Unsigned 0 65536 0

4x0043 belt test 1

time

Time interval before belt

test 1 in minutes

Read/

Write

Not saved Unsigned 0 65536 3

4x0044 belt test 2

time

Time interval before belt

test 2 in minutes

Read/

Write

Not saved Unsigned 0 65536 180

Table 2

FläktGroup eQ RANGE EQRB RHE L-3.4 Installation guide

Brand: FläktGroup

Model: eQ RANGE EQRB RHE L-3.4

Type: Installation guide

Here are some of the key capabilities and possible use cases of the FläktGroup eQ RANGE EQRB RHE L-3.4:

Controllable rotation: The direction of rotation of the motor is reversible and can be set using DIP switches.
Variable speed: The motor speed can be controlled using a 0-10VDC, 2-10VDC, 0-20mA, 4-20mA, or Modbus RTU control signal.
Built-in protection: The drive system has built-in protection against snapped belts, motor overload, short-circuits, and voltage faults.

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FläktGroup eQ RANGE EQRB RHE L-3.4 Installation guide

FläktGroup eQ RANGE EQRB RHE L-3.4 Installation guide

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