Electrical installation guide

VEX240-250HX
3003474-2014-02-26
Electrical installation guide
VEX240HX/250HX for third-party control systems
Electrical installation........................................Chapter 1 + 2
Original instructions
EXHAUSTO A/S
Odensevej 76
DK-5550 Langeskov
Tel. +45 65 66 12 34
Fax +45 65 66 11 10
exhausto@exhausto.dk
www.exhausto.dk
3003474-2014-02-26
1. Connection diagram for supply voltage
1.1. Tilslutningsdiagram for VEX med frekvensomformer........................................4
1.1.1. VEX240FC-X, 1 x 230 V..................................................................................4
1.1.2. VEX250FC-X, 3 x 400 V..................................................................................5
1.1.3. Alarm relay function.........................................................................................6
1.2. Connection diagram for VEX without frequency converter...............................7
1.2.1. Diagram VEX240-X/VEX250-X, motor voltage 3 x 400 V................................7
1.2.2. Diagram VEX240-X/VEX250-X, motor voltage 3 x 230 V................................8
2. Installation of the VEX
2.1. Scope of installation............................................................................................10
2.2. Selection of rotor direction of rotation..............................................................10
2.3. Max. rotational speed..........................................................................................11
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Symbols, terms and warnings
Prohibition symbol
Failure to observe instructions marked with a prohibition symbol
may result in serious or fatal injury.
Danger symbol
Failure to observe instructions marked with a danger symbol may
result in personal injury and/or damage to the unit.
Warnings
The work must be performed by an authorised electrician, in accordance with locally applicable regulations and legislation.
Isolation switch
In accordance with The Machinery Directive*, an isolation switch
must be permanently installed in the unit.
The isolation switch must:
● be lockable or positioned in plain sight in the immediate vicinity of the unit
● disconnect all poles from the supply voltage
● be constructed in accordance with EN 60204-1
The isolation switch is not supplied by EXHAUSTO.
Lock the air handling unit during operation
The VEX unit must always be locked
during operation:
● Use the cylinder lock in the handle. Remember to remove the
key from the lock.
● Or use a padlock. Use the handle’s built-in padlock fixture
Rating plate
The VEX unit rating plate shows:
● VEX model (1)
● Production order no. (2)
NB
Always have the production number ready when contacting EXHAUSTO A/
S.
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Connection diagram for supply voltage
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1. Connection diagram for supply voltage
1.1 Tilslutningsdiagram for VEX med frekvensomformer
1.1.1 VEX240FC-X, 1 x 230 V
The diagram below shows supply voltage and control signal connections.
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Connection diagram for supply voltage
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1.1.2 VEX250FC-X, 3 x 400 V
The diagram below shows supply voltage and control signal connections.
Explanation of diagrams
Designation
Description
FC1
Control signal for frequency converter motor M1 (exhaust air/
extract air)
FC2
Control signal for frequency converter motor M2 (supply air/outdoor air)
RHX2M
Rotor control signals
To regulate the speed of rotation of the motor, please see the
additional information page 13 and 14.
RHX2M 230 V Power supply for rotor control
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Connection diagram for supply voltage
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Designation
Electrical data
FC1 Supply
Power supply for frequency converter FC1 (exhaust air/extract
air)
FC2 Supply
Power supply for frequency converter FC2 (supply air/outdoor
air)
The table below shows max. phase current and max. neutral current
Type
NB:
Description
Supply voltage
Max.
Phase
current
(total)
Max.
neutral
current
(Dimensioned
current)
FC1
Phase
current
FC2
Phase
current
RHX2
M
VEX240
1 x 230 V + N +
PE
11.1 A
-
5.45 A
5.45 A
0.2 A
VEX250
3 x 400 V + N +
PE
8.0 A
13.5 A
7.8 A
7.8 A
0.2 A
Power consumption is taken from two phases and is not sinusoidal. Phase L3 is not
used.
1.1.3 Alarm relay function
Connection
Description
Drawing
The diagram shows
which two terminals from
the FC and RHX2M are
connected to the terminal
block in the connection
box
Alarmrelay
FC
Connection box
Function
FC: Terminal 9-10 and 15-16
The alarm relay position
in the case of power failure or similar
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Connection diagram for supply voltage
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Description
Drawing
The alarm relay position
in case of alarm
The alarm relay position
during operation
1.2 Connection diagram for VEX without frequency converter
1.2.1 Diagram VEX240-X/VEX250-X, motor voltage 3 x 400 V
The diagram below shows external frequency converters and control signal connections.
*Not supplied by EXHAUSTO
NB:
The VEX unit's motors are supplied wired for 3 x 400 V + PE. If you want to use 3
x 230 V, the motors M1 and M2 terminal block shackles must be rewired. See below.
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Connection diagram for supply voltage
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3 x 400 V
3 x 230 V
1.2.2 Diagram VEX240-X/VEX250-X, motor voltage 3 x 230 V
The diagram below shows external frequency converters and control signal connections.
*Not supplied by EXHAUSTO
Explanation of diagrams
NB:
Term
Description
RHX2M
Rotor control signals
RHX2M 230 V
Power supply for rotor control
Motor M1
Power supply to motor M1
Motor M2
Power supply to motor M2
Other parts, shown on the front page of the VEX instructions, are supplied by EXHAUSTO
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Connection diagram for supply voltage
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Electrical data
The table below shows how the total phase current is shared between the motor
M1, motor M2 and rotor control RHX2M, respectively.
Type
Motor voltage
Max. phase current
(total)
VEX240
3 x 230 V + PE
5.4 A
2.6 A
2.6 A
0.2 A
3 x 400 V + PE
3.2 A
1.5 A
1.5 A
0.2 A
3 x 230 V + PE
8.2 A
4.0 A
4.0 A
0.2 A
3 x 400 V + PE
4.8 A
2.3 A
2.3 A
0.2 A
VEX250
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Motor 1 Motor 2 RHX2M
Installation of the VEX
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2. Installation of the VEX
2.1 Scope of installation
VEX unit
The electrical installation for the VEX unit comprises the following connections:
Connection box
Wiring configurations for the terminal board in the connection box:
● Supply voltage for rotor control
● Rotor control signals
● Motor supply voltage and frequency converter supply voltage if necessary
● VEX with FC: Frequency converter control signals and alarm relays
NB:
VEX with FC:
● The frequency converters are preprogrammed by EXHAUSTO and protect the
motors from overloading
● The frequency converters must have short-circuit protection
VEX without FC:
● Motors must have overheating and short-circuit safety functions
For other technical data, see the “Technical data” section in the main instructions of
the VEX.
2
1
RD12513-01
Positioning of electrical components
3
1. Connection box
2. Frequency converters
3. Rotor control
2.2 Selection of rotor direction of rotation
Left/Right
The term R for Right indicates the supply air is to the right of the cooling unit, as
seen from the operating side. Supply air to the left is indicated by L for Left
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Installation of the VEX
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Selecting Left/Right
The DIP switches in the rotor control must be changed to alter the VEX unit’s Left
or Right configuration.
Step
Action
1
Open the doors – the rotor control is located at the bottom of the
VEX.
2
Detach the RHX2M rotor control door
3
Determine the fan positioning (1 or 2) of the VEX (see the model
overview in the main VEX manual). Set the DIP switches according
to the following table:
Unit configuraDIP switch setting
tion
Fan 1 R
or
Fan 2 L
Fan 1 L
or
Fan 2 R
2.3 Max. rotational speed
The diagram in the table below shows the relationship between step motor rotational
speed and motor signal voltage
If the rotor control step
motor receives a:
Then
0-10 V signal less than 0.6 V
The motor
stops
0-10 V signal greater than 1.1 V The motor
starts
0-10 V signal greater than 9.5 V Motor rotation
of approx. 200
RPM
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Diagram
Installation of the VEX
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The table below shows the maximum permitted step motor rotational speed – dependent on the size of the VEX. If the rotational speed exceeds the given value, the motor
will become overloaded and shut down.
VEX model
Max. rotational speed
Optimum total
rpm*
step motor rpm
VEX240
70
10
VEX250
79
10
*When the rotor operates with this rpm, the highest temperature efficiency is achieved.
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