FläktGroup EQRB Rotary heat exchanger EMX-P10 Installation and Maintenance Manual

Brand: FläktGroup

Model: EQRB Rotary heat exchanger EMX-P10

Type: Installation and Maintenance Manual

Fläkt Woods 8631 GB 2014.07.23 1 We reserve the right to alter specifications.

Installation- and maintenance instruction

Installation instruction, Drive system EMX-P10

EQRB size 005-018

Variable speed rotor

The units in this series can be equipped with different

types of drive equipment to suit the torque necessary for

driving rotors of different diameters.

Safety directives

Rotary heat exchanger EQRB

Important !

– Read the whole of the user instructions

before installation and commissioning.

– The installation work should be carried

out by authorized personnel.

– General conditions and regulations

for the installation and operation of

electrical plant must be observed.

– Measures must be taken to provide pro-

tection against personnel injuries and

damage to machinery in accordance

with local conditions and regulations.

– The P 10 is intended for permanent

installation.

– No cables may be connected or dis-

connected until the power supply has

been isolated.

– Check that the equipment is correctly

connected before it is taken into opera-

tion. See the instructions under the

heading ”Description of connections”

on page 3.

– Faults that have occurred due to

in-correct installationor operation

will not be covered by the guarantee.

Regarding the control logic and

operation:

During start up and after each time

the AHU has been stopped, it is

recommended that the exhaust fan

operates during 1 minute before

the supply fan is started.

Unit size System

eQ-005-008 P10 with 25 W motor

eQ-009-018 P10 with 40 W motor

Fläkt Woods 8631 GB 2014.07.23 2 We reserve the right to alter specifications.

Installation- and maintenance instruction

During operation

Measurements at the control unit during operation may

be carried out only at the terminal blocks.

N.B. Take extreme care.

On dismantling and scrapping

The enclosure of the P 10 is made of plastic. The material

should be handled and recovered in accordance with

the relevant legislation.The circuit must be handled and

recycled in accordance with current legislation.

P 10 Control unit – General description

The P 10 is a variable speed drive system which is spe-

cially designed for driving rotary heat exchangers.

The control unit is designed for connection to one

geared motor and tachometer from Panasonic.

The control unit incorporates a capacitor for a motor

with a rating of 25 W or 40 W.

No adjustments are necessary.

All control inputs are galvanically isolated from the

mains.

Suitable for most control signals commonly

employed on the market.

The direction of rotation of the motor is reversible.

Functions

Automatic purging operation

If the control signal is below a certain value (for the exact

value, see the section entitled Installation description),

the heat exchanger rotor will rotate through approx.

30° every 10 minutes.

Smooth starting

The control system is equipped for smooth starting of

the motor. During intermittent operation start-up is

adaptive to provide a fast and soft start.

Rotor speed monitor

The speed monitor checks whether the heat exchanger

rotor is rotating. A magnet fitted to the periphery of the

rotor actuates a magnetic sensor once every revolution.

If the belt has failed and the rotor has stopped, the pulses

will cease and an alarm will be initiated after 5 minutes.

The speed monitor also monitors the system during

purging operation, but the time before the alarm is ini-

tiated is then 8 hours.

Indications with lysdioder

Rotary heat exchanger EQRB

Important !

Do not connect a motor with a higher rating.

The maximum motor current is 0.7 A.

Green Red Indication

Lights for

2 sec-

onds

Lights for

2 sec-

onds

Power on

Flashes

slowly

Off Purging oper-

ation

Flashes

fast

Off

Lights

for 2

seconds

Off The magnet

passes

the rotations-

ensor

Flashes

fast

Pre alarm,

overload

Off Flashes

fast

Rotation

alarm

Yes

Off Overload

alarm

Yes

External

alarm with

alarm relay

Restart

Fläkt Woods 8631 GB 2014.07.23 3 We reserve the right to alter specifications.

Installation- and maintenance instruction

Recommendations for EMC

An external 10 A fuse should always be installed.

No adjustments to the control unit are necessary.

To ensure conformance to the provisions of the EMC

(electromagnetic compatibility) Directive 89/336/EEC,

it is important that the instructions below should be fol-

lowed.The P 10 incorporates an EMC filter.

The motor and control unit are installed in the heatex-

changer casing.

The earth conductor in the mains cable is connected to

the earth terminal of the control unit and to the casing of

the rotor or air handling unit.

The external cable for the control signal and alarm

should be shielded. The shield should be connected

tothe casing of the rotor or the air handling unit.

DIP-switch settings

Control signals Rotor speed monitor

Rotary heat exchanger EQRB

123

0–10 V

10 k ohm

2–10 V

4–20 mA

0–20 mA 5

Rotation

monitor

No rotation

monitor

Continuous

and intermit-

tent

Operation

Control signal Purging operation From min- to max.speed Max.speed

0-10 V 0-1,5 V 1,5-9,7 V >9,7 V

2-10 V 0-3,2 V 3,2-9,8 V >9,8 V

4-20 mA 0-6,4 mA 6,4-19,5 mA >19,5 mA

0-20 mA 0-3 mA 3-19,4 mA >19,4 mA

Direction of rotation of the rotor

Supply air

To reverse the direction of rotation, the motor cables are

exchanged one with the other at terminals T2 and T3

when the internal motor capacitor is used. When an

external motor capacitor is used, the cable connected to

T2 is exchanged with one that is connected only to the

motor capacitor.

Different control signals for various

operating conditions

Fläkt Woods 8631 GB 2014.07.23 4 We reserve the right to alter specifications.

Installation- and maintenance instruction

Description of connections

The following two cables are connected between the

motor unit and the control unit.

– Motor cable: 5-core, 1.5 mm2. In the motor, the earth

conductor is connected to the earth screw.

– Tachometer cable: 3-core, at least 0.1 mm2, shielded.

The shield is insulated from the motor.

The connections diagram below shows how the various

signals should be connected.

An external 10 A delayed fuse should always be pro-

vided.

An isolating switch should be installed between the

mains and the control unit. When the mains supply is

switched off, a power supply failure alarm will be initi-

ated.

Connection diagram for 25 W and

40 W motors

Rotary heat exchanger EQRB

Caution!

A residual voltage will remain for about 4

minutes after the mains power supply has

been switched off.

No adjustments to the control unit are necessary.

The control unit is not provided with protection

against short circuit between the motor cable con-

ductors or against an earth fault between the motor-

cables and earth. Short circuit will immediately lead

to total breakdown of the control unit.

So before switching on the power supply, always

check withan ohmmeter that there is no short circuit.

Do not connect a switch between the motor and the

control unit.

Important!

Jumper BY1 at the motor terminals

should be cut off if the motor rating is

25 W.

L N

LN T1 T2

Mains Motor

BY1 Existing circuit card

Tachometer Control signal

Diff. thermostat

for cooling energy

recovery (max. speed)

Control

signal

41-42 Open on

an alarm

42-43 Closed on

an alarm

+–

Alarm

1 2 31 32 33 34 36 37

41 42 43

Motor

Therm.

Gr / G

Blue

GrayYellow

TACHOMETER

Yellow Blue

Brown

Black Black

Brown

–

Gray

Pink

ROTOR SPEED MONITOR

*) Shift if supply

air is above

Fläkt Woods 8631 GB 2014.07.23 5 We reserve the right to alter specifications.

Installation- and maintenance instruction

Check that the installation has been correctly carried

out, e.g. that the terminal screws have been securely

tightened, that the cables have been correctly stripped,

and that the DIP switch settings are correct.

Fault tracing on the P 10

Rotary heat exchanger EQRB

When changing the control unit, change the entire

enclosed case together with its contents.

Observation/ Cause/action

indication

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

the mains termina lblock. If the mains

voltage is correct, replace the control

unit.

Green LED flashing

slowly/ purging

operation

- low control signal

Are + and - reversed?

Are DIP switches 2-3 correctly set?

Vary the control signal between min and

max. Can 0-10 V (2-10 V) be measured

between 33 (+) and 34 (-)?

Check EMX-P10 by linking 36-37. The

motor should now run up to max rpm.

Red LED

is flashing/the

rotation monitor

is giving an alarm

-the motor is still

running.

The rotation monitor has detected that

input 31-32 has not been closed the

last 4 rotor revolutions.

This may be due to:

• Faulty rotation monitor. The rotation

monitor can be checked with the

aid of the green LED. First reset the

alarm by switching the mains supply

to the control unit off and on again.

The LED gives a steady light for

about 2 seconds when 31-32 is

closed, e.g. when the magnet

passes the impulse sensor.

• Faulty control unit. First reset the

alarm by switching the mains supply

to the control unit off and on again.

Link 36-37. Is the voltage between

terminals T1 and T2 about 180-230

VAC ? If not, replace the control unit.

Observation/ Cause/action

indication

Red LED lights

constantly and

green is off

The motor protector has tripped.

Check that the correct motor is

connected, that jumper BY1 has been

cut if the required value of the motor

capacitor is 1.5 µF and that the heat

exchanger is not binding. Also check

that the tachometer cable is correctly

connected and is not damaged.

The motor runs

intermittently

In continuous operation the speed is

varied continuously from maximum

revs down to 1/25 of the maximum

speed (0.4 –10 rpm at 10 rpm

maximum).

The rotation

monitor does

not give an alarm

Check DIP switch 4.

Also check sensors/magnets.

The motor rota-

tes in the wrong

direction

Swap the motor cables in terminals

T2 and T3 with each other when using

the integrated capacitor.

When the external motor capacitor is

used the cable connected to T2 is swit-

ched with the one that is only connec-

ted to the motor capacitor.

The motor runs

at full speed even

when the control

signal is low

Check the integrated tachometer in

the motor as well as the wiring for the

tachometer.

Motor does not

run smoothly,

jerky

Check that the capacitance value is

correct for the motor being used.

FläktGroup EQRB Rotary heat exchanger EMX-P10 Installation and Maintenance Manual

FläktGroup EQRB Rotary heat exchanger EMX-P10 Installation and Maintenance Manual

FläktGroup EQRB Rotary heat exchanger EMX-P10 Installation and Maintenance Manual

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