S&P Packaged INVERTER Range User guide

Packaged INVERTER Range

Instruction Manual

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CONTENTS Page
Transport and Handling 3
General 3
Specification 3
Modes of Operation for the Packaged Inverter/Fan Range 4
KeyPad 4
Important Information for the Safety of Installers and Users 5
Safety during Installation 5
Mechanical Installation 5
Electrical Installation of the Inverter

to a Corresponding “Packaged” S&P Fan 6
Wiring Diagrams and Set-Up 8
Operation Mode a:- Off/On to Installer-defined Speed and

Thereafter Manual Speed Adjustment via the Inverter’s Integral Keypad 8

Wiring Diagram No. 1 including Running Status Relay Wiring 8
Running Status Changeover Relay 9
Speed Range Scaling for Operation Mode a 9

Operation Mode b. Off/On and Speed Control by Additional

Accessory S&P REB-CVF 0-10V Speed Controller 11

Wiring Diagram No. 2 11

Programming the Inverter for Operation Mode b 12
Speed Range Scaling for Operation Mode b 12

Operation Mode c. Off/On and by Additional Remote (wired) OFF/ON Switch 14

Wiring Diagram No. 3 14

Programming the Inverter for Operation Mode c 14
Pre Starting-up Checks and Initial Energisation 14
Operating Instructions 17
Troubleshooting 18
EMC Filters 19
Recycling 19
EC Declaration of Conformity/Guarantee 19

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Thank you for placing your confidence in S&P by buying this product. It has been
manufactured following current technical safety regulations and in compliance with
EC standards.

Please read this instruction booklet carefully before installing or starting up the
product. It contains important information on personal and user safety measures to
be followed while installing, using and carrying out maintenance work on the
equipment. Once the product has been installed, please hand this booklet to the end
user.

Check that the apparatus is in perfect condition while unpacking. Any fault or
damage caused in origin is covered by the S&P guarantee. Please make sure that
the apparatus coincides with the product you have ordered and that the details on
the characteristics plate fulfil your requirements.

Transport and Handling

1. The packaging used for this apparatus has been designed to support normal
transporting conditions. The apparatus must always be transported in its
original packaging as not doing so could deform or damage the product.

2. The product should be stored in a dry place in its original packaging, protected
from dust and dirt until it is installed in its final location. Do not accept delivery
if the apparatus is not in its original packaging or shows clear signs of having
been manipulated in any way.

3. Do not place heavy weights on the packed product and avoid knocking or
dropping it.

4. When handling heavy products, adequate lifting equipment should be used to
avoid harming people or damaging the product itself.

5. Never lift a product by pulling it by the wires or terminal/control enclosure.
Likewise, no pressure should be applied on the impeller, shutter or spigots
while handling the product.

GENERAL

6. The Packaged Inverter range comprises of single-phase (1PH) in, three­phase out (3PH) Variable Frequency Inverters specifically intended to control
S&P 3PH 230V/400V fans.

Specification

7. The Inverter control is designed for continuous operation with the maximum
rated current load, (10A or 16A, depending on version) on single phase 230
Volts ~ 50Hz supply.

8. The normal equipment temperature range is -10°C to +40°C.

9. The normal equipment humidity range is 20% RH to 90% RH.

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10. The Inverter is not suitable for positioning where corrosive gas, oil, mist etc.
are present.

11. The unit meets the EMC requirements of EN 61000-3-3:2015 and EN 61000­3-2:2015

12. The control is housed in an enclosure that is suitable for the current rating and
is IP54 rated.

Modes of Operation for the Packaged INVERTER/FAN Range

13. There are 3 modes of fan operation via the Inverter detailed:-

a. Off/On to installer-defined speed and thereafter manual speed

adjustment via the Inverter’s integral keypad. (Wiring Diagram No. 1)

b. Off/On and speed control by accessory S&P REB-CVF 0-10V Speed

Controller code S&P5401304100. (Wiring Diagram No. 1 PLUS
additional Wiring Diagram No. 2).

c. Off/On to installer-defined speed via a Remote (wired) OFF/ON Switch.

(Wiring Diagram No. 1 PLUS additional Wiring Diagram No. 3).

KeyPad

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Fig. 1 Operation Pad Diagram

14. Using the KeyPad

a. Navigation of the keypad is via the arrow keys.

i. To move to the left digit, press

ii. To move to the right digit, press

iii. To increase the value of a digit, press

iv. To decrease the value of a digit, press

Important Information for the Safety of Installers and Users

15. Installation must only be carried out by qualified persons.

16. Make sure that the installation complies with each country’s current
mechanical and electrical norms.

17. Once ready to use, the apparatus must fulfil the following standards:

a. Standard for Low Voltage Installations 2006/95/CE
b. Machinery Standard 2006/42/CE
c. Standard for Electromagnetic Compatibility 2004/108/CE

18. Any area in or around a machine, where the presence of people can cause
situations of danger for their safety or health, can be considered a high risk
area.

19. This apparatus must not be used in explosive or corrosive atmospheres.

20. If an Inverter is required for working in the previously stated conditions,
consult the S&P Technical Department.

21. If the apparatus is going to be used in atmospheres with over 90% relative
humidity, consult the S&P Technical Department first.

Safety During Installation

22. When installing the Inverter, make sure that all the fittings are in place and
that the structure which supports it is resistant enough to bear its weight at full
functioning power.

23. Before manipulating the apparatus, make sure the mains supply is
disconnected, even if the Inverter is switched off.

24. Check that the mains supply voltage and frequency values coincide with the
stipulations on the characteristics plate.

25. Follow the connections diagram(s) for the electrical connections.

26. An earth connection is necessary, check that it is correctly connected and that
adequate thermal and overloading protection has been connected and
adjusted to the corresponding limits – please refer to note #37 below.

Mechanical Installation

27. The Inverter is intended to be supplied ONLY with a corresponding S&P
three-phase ventilation fan. Check that the size and the speed of the fan can
be safely controlled by this Inverter.

28. Install the Inverter in a dry sheltered position.

29. Leave an air space of not less than 150mm around the controller to allow
cooling air to flow freely. Leave an additional gap in front of the Inverter to
allow for access during installation/wiring/maintenance. Do not install in close
proximity to other heat sources. The maximum ambient temperature for the
controller must not exceed 40°C. The maximum humidity for the controller
must not exceed 90%R.H.

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30. The product should be vertically mounted only. In this orientation it is suitable

Inverter Model

Maximum Input

Current

Recommended Cable Sizes

Input Cable

Output Cable

DIG VFD 1PH>3PH 2.2kW 10A

32 A

4 mm2

2.5 mm2

DIG VFD 1PH>3PH 3.7kW 16A

32 A

4 mm2

2.5 mm2

for fitment onto a suitable supportive structure and secured through the 4
fixing holes provided.

Electrical Installation of the Inverter to a Corresponding “Packaged” S&P Fan

WARNING!

31. Mains voltage is present. It is the responsibility of the user to ensure
compliance with the Health and Safety at Work Act, 1974.

CAUTION

32. Isolate mains supply before connecting.

33. This unit must be earthed.

34. All electrical connections should be made by a qualified electrician.

35. All wiring must be in accordance with current wiring regulations.

36. The apparatus should be provided with a separate suitably rated double pole
isolator or switch.

37. The maximum input current values and recommended cable sizes for each
Inverter type are shown in table 1 below.

Table 1.

38. The cable between the Inverter and fan should be a screened type.

39. The Inverter is suitable as supplied for connection to the fan with up to a 25m
long connection cable. Installations in excess of this MAX. 25m CABLE
LENGTH distance and up to 50m should be fitted also with an EMC Filter (not
supplied – Available as an accessory, see Note #66 for additional
information). In the uncommon occurrence that the cable length exceeds
50m, a Choke is also required.

In Summary
Fan plus Inverter Pack as supplied – MAX. CABLE LENGTH 25m
Fan plus Inverter Pack + EMC Filter – MAX. CABLE LENGTH 50m
Fan plus Inverter Pack + EMC Filter + Choke – CABLE LENGTH ABOVE 50m

Wiring Installation

40. The impedance overload protection parameter varies depending on the type
of fan that the Inverter is being connected to and this parameter has been

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factory-configured to allow the Inverter to provide overload protection and
safely control ONLY the packaged fan with which it has been supplied.

The Inverter must ONLY be connected to the corresponding packaged fan with
which it has been supplied.

41. THE THREE-PHASE FAN TO WHICH THE INVERTER IS TO BE
CONNECTED HAS BEEN CONFIGURED TO ACCEPT A 230V 3-PH
SUPPLY, NOT A 400V SUPPLY – DO NOT RE-CONFIGURE THE FAN TO
ACCEPT A 400V SUPPLY!

42. Check that the power supply matches that on the Inverter rating plate.

43. The connections must be as shown in Wiring Diagram No. 1 of this booklet,
and if the accessory REB-CVF Controller is being employed, Wiring Diagram
No. 2 also, or if a remote (wired) on/off switch is employed, then Wiring
Diagram No. 3 in addition to No. 1.
The Inverter incorporates a “Running Status Relay”, if an output is required to
a remote device then in addition to the power connections, the optional Error
Relay Output connections shown on Wiring Diagram No.1 should be
followed. Please refer to note #50 for additional information.

44. All cable entries provided should be used. Any left unused should be blanked
and left in a safe condition.

45. Remove the front panel of the controller from the front cover by removing the
panel fixing screws. This provides access to all of the terminals located on the
control circuit boards plus the earth cable, the flying end of which is taped to
the underside of the panel.

NOTE – We do not recommend removing the front cover, however if
it is removed then take great care not to damage the ribbon cable
which connects the display to the circuit board fixed to the base.
The ribbon cable’s plug can be temporarily unplugged from the
socket. When re-attaching the ribbon cable plug be very aware that
the plug and socket must be connected in the correct orientation.
Re-position the front cover and replace the fixing screws.

IMPORTANT – RISK OF DAMAGE! ENSURE THAT THE PLUG IS
TIGHTLY SECURED TO THE SOCKET!

NOTE – When replacing the front cover, ensure that the seal is
correctly positioned.

46. Replace the panel when the wiring connections have been made, ensuring
that the seal is correctly positioned.

47. Check that the unit mountings and electrical connections are secure and in
accordance with the applicable wiring diagram on page 8 (and if applicable,
page 11 or 14 also) of this instruction booklet.

48. For wiring diagrams of other schemes, please contact S&P.

49. IF IN DOUBT, ASK!

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WIRING DIAGRAMS (SINGLE PHASE 230V ~ 50Hz MAINS SUPPLY)

Running Status Relay Output
TA-TB when Running
TA-TC when Non-Running
SEE NOTE #50 FOR ADDITIONAL
INFORMATION

L – Supply Live 230V ~ 50Hz
N – Supply Neutral
E – Earth

WIRING DIAGRAM No. 1 – Off/On to installer-defined speed and thereafter manual

speed adjustment via the Inverter’s Integral Keypad.

OPTIONAL INVERTER TERMINAL USEAGE FOR STATUS SIGNALLING

IMPORTANT NOTE TO INSTALLERS

THE PACKAGED 3-PHASE FAN SUPPLIED WITH THIS INVERTER HAS BEEN

CONFIGURED TO ACCEPT A 3-PH 230V SUPPLY, NOT A 400V SUPPLY - IT IS

ESSENTIAL THAT THE FAN IS NOT RE-CONFIGURED.

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IF IN DOUBT, ASK!

50. Running Status Changeover Relay output – The Relay is factory-set to
provide the following logic:-

Continuity between TA-TB – Inverter providing power to the fan (run)
Continuity between TA-TC – Inverter not providing power to the fan (no-run),
either in STOP condition or FAULT condition.

Contact Rating – 1A

51. Speed Range Scaling – NOTE that the scale for the VFD frequency output, as
the inverter leaves the factory is 20.00 Hz – 50.00 Hz. As a result, during

operation, pressing the keys will by default control the fan between

40 and 100% duty. If this factory default is not suitable for the application’s

needs then the range can be modified:-

a. To modify the minimum speed:-

i. Energise the VFD.

ii. Make sure that the VFD is stopped and that the fan is not

running.

iii. Press MODE and “0.0.0.0.” will appear.

iv. Change “0.0.0.0.” to “1.9.5.1.” and press OK, “F0” will then

appear.

v. Press OK again and “F0.00” will appear.

vi. Press the key until “F0.06” is displayed and press OK.

vii. Change the value from “20.00” to the desired minimum

frequency output. Please note that this value is the minimum
running frequency in Hz (e.g. if you would like the minimum
speed set to 30Hz representing 60% duty, then this parameter
needs to be modified to “30.00”). There is a reference table of
typical values below, (note c).

viii. Press OK and “F0.07” will be displayed.

ix. Press MODE twice which will take you back to the home screen

(running speed value).

x. The minimum speed set-up is now complete.

b. To modify the maximum speed:-

i. Energise the VFD.

ii. Make sure that the VFD is stopped and that the fan is not

running.

iii. Press MODE and “0.0.0.0.” will appear.

iv. Change “0.0.0.0.” to “1.9.5.1.” and press OK, “F0” will then

appear.

v. Press OK again and “F0.00” will appear.

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vi. Press the key until “F0.05” is displayed and press OK.

Duty

Frequency

Display

Duty

Frequency

Display

10%

5 Hz

05.00

60%

30 Hz

30.00

20%

10 Hz

10.00

80%

40 Hz

40.00

40%

20 Hz

20.00

90%

45 Hz

45.00

50%

25 Hz

25.00

100%

50 Hz

50.00

vii. Change the value from “50.00” to the desired maximum

frequency output. Please note that this value is the
maximum running frequency in Hz (e.g. if you would like the
maximum speed set to 40Hz representing 80% duty, then this

parameter needs to be modified to “40.00”). There is a

reference table of typical values below, (note c).

viii. Press OK and “F0.06” will be displayed.

ix. Press MODE twice which will take you back to the home screen

(running speed value).

x. The maximum speed set-up is now complete.

c. Duty Percentage / Frequency / VFD Display Reference

If NEITHER a REB–CVF nor a REMOTE

(WIRED) SWITCH is connected to the

inverter then go to note 54 on page 14.

However if a REMOTE (WIRED) SWITCH IS

connected to the inverter then go to note

53 on page 14.

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WIRING DIAGRAM No. 2 – Operation Mode b. Off/On and speed control by
additional accessory S&P REB-CVF 0-10V Speed Controller code S&P5401304100.

NOTE – WIRING DIAGRAM No. 2 IS IN ADDITION TO WIRING DIAGRAM No. 1
In addition to Wiring Diagram No. 1, Wiring Diagram No. 2 plus the “Programming
the Inverter” sequence on page 12 of this instruction booklet must be followed.

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52. Programming the Inverter – APPLICABLE ONLY TO OPERATION MODE
b. Off/On and speed control by additional accessory S&P REB-CVF 0­10V Speed Controller code S&P5401304100.

a. Assigning the REB-CVF to the Inverter

i. Energise the VFD.

ii. Make sure the ON/OFF switch on the REB-CVF is “OFF”.

iii. Press MODE and “0.0.0.0.” will appear.

iv. Change “0.0.0.0.” to “1.9.5.1.” and press OK, “F0” will then

appear.

v. Press OK and “F0.00” will appear.

vi. Press the key until “F0.01” is displayed and press OK.

vii. Change the value from “0” to “1” and press OK, “F0.02” will then

appear. Press OK.

viii. Change the value from “0” to “2” and press OK, “F0.03” will then

appear. Press OK.

ix. Change the value from “00” to “01” and press OK, “F0.04” will

then appear.

x. Press MODE twice which will take you back to the home screen

(running speed value).

xi. The set-up is now complete.

b. Speed Range Scaling – NOTE that the scale for the VFD frequency

output, as the inverter leaves the factory is 20.00 Hz – 50.00 Hz. As a
result, rotating the REB-CVF dial between the minimum and maximum
end stops will by default control the fan between 40 and 100% duty. If
this factory default is not suitable for the applications needs then the
range can be modified:-

i. To modify the minimum speed:-

1. Energise the VFD.

2. Ensure the ON/OFF switch on the REB-CVF is “OFF”.

3. Press MODE and “0.0.0.0.” will appear.

4. Change “0.0.0.0.” to “1.9.5.1.” and press OK, “F0” will
then appear.

5. Press the key until “F5” is displayed. Press OK and
“F5.00” will appear.

6. Press the key until “F5.12” is displayed and press
OK.

7. Change the value from “040.0” to the desired minimum
frequency output. Please note that this value is a
percentage of 50 Hz (e.g. if you would like the minimum
speed set to 30Hz representing 60% duty, then this

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parameter needs to be modified to “060.0”). There is a

Duty

Frequency

Display

Duty

Frequency

Display

10%

5 Hz

010.0

60%

30 Hz

060.0

20%

10 Hz

020.0

80%

40 Hz

080.0

40%

20 Hz

040.0

90%

45 Hz

090.0

50%

25 Hz

050.0

100%

50 Hz

100.0

reference table of typical values below, (note iii).

8. Press OK and “F5.13” will be displayed.

9. Press the key until “F5.00” is displayed.

10. Press MODE twice which will take you back to the home
screen (running speed value).

11. The minimum speed set-up is now complete.

ii. To modify the maximum speed:-

1. Energise the VFD.

2. Ensure the ON/OFF switch on the REB-CVF is “OFF”.

3. Press MODE and “0.0.0.0.” will appear.

4. Change “0.0.0.0.” to “1.9.5.1.” and press OK, “F0” will
then appear.

5. Press the key until “F5” is displayed. Press OK and
“F5.00” will appear.

6. Press the key until “F5.14” is displayed and press
OK.

7. Change the value from “100.0” to the desired maximum
frequency output. Please note that this value is a
percentage of 50 Hz (e.g. if you would like the maximum
speed set to 45Hz representing 90% duty, then this

parameter needs to be modified to “90.00”). There is a

reference table of typical values below, (note iii).

8. Press OK and “F5.15” will be displayed.

9. Press the key until “F5.00” is displayed.

10. Press MODE twice which will take you back to the home
screen (running speed value).

11. The maximum speed set-up is now complete.

iii. Duty Percentage / Frequency / VFD Display Reference

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WIRING DIAGRAM No. 3 – Operation Mode c. Off/On via remote (wired) OFF/ON
switch.

NOTE – WIRING DIAGRAM No. 3 IS IN ADDITION TO WIRING DIAGRAM No. 1
In addition to Wiring Diagram No. 1, Wiring Diagram No. 3 plus the “Programming
the Inverter” sequence below must be followed.

53. Programming the Inverter – APPLICABLE ONLY TO OPERATION MODE
c. Off/On by a REMOTE (WIRED) VOLT-FREE ON/OFF SWITCH.

a. Make sure the ON/OFF switch is “OFF”.
b. Press MODE and “0.0.0.0.” will appear.
c. Change “0.0.0.0.” to “1.9.5.1.” and press OK, “F0” will then appear.
d. Press OK and “F0.00” will appear.

e. Press the key until “F0.01” is displayed and press OK.
f. Change the value from “0” to “1” and press OK, “F0.02” will then

appear.

g. Press MODE twice which will take you back to the home screen

(running speed value).

h. The set-up is now complete.

Set-Up and Initial Start-Up

54. Pre-starting-up checks – before starting up the fan, ensure that:

a. The apparatus is well secured and that the electrical connections

have been carried out correctly.

b. No loose material or fitting remains can be sucked up by the

ventilator. If the ventilator has been mounted in a duct, make sure it

is clear of loose material.
c. The earth fittings are adequately connected.
d. No electrical continuity exists between phases on the Inverter input

side nor output side nor between the Live phase and Earth.
e. The electrical safety devices are correctly connected, adequately

adjusted and ready for use.

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f. The Inverter enclosure and electrical cable glands are correctly

sealed and water-tight.

55. When starting up the product, ensure that:
a. The impeller rotates in the correct direction. If the impeller rotates in

the wrong direction then:-

i. if the inverter keypad is being used for control then press the

STOP/RESET key immediately.
Or

ii. if an REB-CVF Controller is connected, then switch the REB-

CVF OFF/ON switch to the “Off” position immediately.
Or

iii. If a remote (wired) ON/OFF switch is connected, then switch the

ON/OFF switch to the “Off” position immediately.

IF THE IMPELLER ROTATES IN THE WRONG DIRECTION THEN
THE INVERTER/FAN MUST BE ISOLATED FROM THE MAINS
SUPPLY AND ANY 2 PHASES BETWEEN THE INVERTER AND
FAN THEN REVERSED BEFORE RE-STARTING.

b. There are no abnormal vibrations.
c. If any of the electrical safety devices blow, the apparatus must be

quickly disconnected from the mains supply.

d. The whole installation should be carefully checked before trying to

start-up the fan again.

56. If the inverter keypad is being used for control, then switch on the control

by pressing the “RUN” Key. The fan will start.

a. The Inverter has been factory set to accelerate the fan speed to 100%

(50Hz) Inverter output in 40 seconds. The Inverter display will show
the climbing frequency output from 0 to 50Hz over a 40 second period
of time. When the fan has reached its maximum speed the frequency
count on the display will stop counting at 50.00. NOTE that if this
factory-set maximum speed has been modified as per note #51b, then
the inverter will accelerate to, and display the modified set value.

b. When running, adjust the frequency output with the keys until

the required fan duty point has been reached. Holding the keys down
will speed-up the frequency change. For a more accurate frequency
change (to fine-tune the Inverter output/fan speed), press and release
the keys quickly rather than holding them down.

c. To stop the fan, press the STOP/RESET key. The fan will decelerate

over a period of 40 seconds until it stops.

d. When “RUN” is pressed again to re-start the fan, the fan will accelerate

to the speed defined by the frequency output previously set (in #56b,
above). When the fan has reached the speed, the frequency count on
the display will stop counting at the previously defined duty point
frequency output (in #56b, above).

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Or,

57. If an REB-CVF Controller is connected, then rotate the REB-CVF dial

clockwise to its maximum end-stop. Switch the REB-CVF OFF/ON switch to
the “On” position. The fan will start.

a. The Inverter has been factory set to accelerate the fan speed to 100%

(50Hz) Inverter output in 40 seconds. The Inverter display will show
the climbing frequency output from 0 to 50Hz over a 40 second period
of time. When the fan has reached its maximum speed the frequency
count on the display will stop counting at 50.00. NOTE that if this
factory-set range has been modified as per note 52b.ii, then the
inverter will accelerate to, and display the modified set value.

b. When running, adjust the frequency output with the REB-CVF dial until

the required fan duty point has been reached.

c. To stop the fan, switch the REB-CVF OFF/ON switch to the “Off”

position. The fan will decelerate over a period of 40 seconds until it
stops.

d. When the REB-CVF OFF/ON switch is switched to the “On” position

again to re-start the fan, the fan will accelerate to the speed defined by
the frequency output previously set (in #57b, above). When the fan has
reached the speed the frequency count on the display will stop
counting at the previously defined duty point frequency output (in #57b,
above).

Or,

58. If a Remote (wired) Switch is connected then change the switch to the “On”

position. The fan will start.

a. The Inverter has been factory set to accelerate the fan speed to 100%

(50Hz) Inverter output in 40 seconds. The Inverter display will show
the climbing frequency output from 0 to 50Hz over a 40 second period
of time. When the fan has reached its maximum speed the frequency
count on the display will stop counting at 50.00. NOTE that if this
factory-set maximum speed has been modified as per note 52b, then
the inverter will accelerate to, and display the modified set value.

b. When running, adjust the frequency output with the keys until

c. To stop the fan, change the Remote (wired) Switch to the “Off” position.

d. When the switch is changed to the “On” position again to re-start the

Page 16 of 20

the required fan duty point has been reached. Holding the keys down
will speed-up the frequency change. For a more accurate frequency
change (to fine-tune the Inverter output/fan speed), press and release
the keys quickly rather than holding them down.

The fan will decelerate over a period of 40 seconds until it stops.

fan, the fan will accelerate to the speed defined by the frequency
output previously set (in #58b, above). When the fan has reached the
speed, the frequency count on the display will stop counting at the
previously defined duty point frequency output (in #58b, above).

Operating Instructions

59. If the inverter keypad is being used for control then switch on the control

by pressing the “RUN” Key. The fan will start.

a. The Inverter display will show the climbing frequency output from 0 to

the defined duty point frequency. When the fan has reached its set
speed the frequency count on the display will stop counting at the
corresponding frequency output value.

b. When running, the frequency output can be adjusted within the 40% -

100% duty range (or, if this factory-set range has been modified as per
note #50) with the keys until the required fan speed is been

reached. Holding the keys down will speed-up the frequency change.
For a more accurate frequency change (to fine-tune the Inverter
output/fan speed), press and release the keys quickly rather than
holding them down.

c. To stop the fan, press the STOP/RESET key. The fan will stop.

Or,

60. If an REB-CVF Controller is connected then switch the REB-CVF OFF/ON

switch to the “On” position. The fan will start.

a. The Inverter display will show the climbing frequency output from 0 to

the defined duty point frequency. When the fan has reached the speed
corresponding to the REB-CVF dial position, the frequency count on
the display will stop counting at the corresponding frequency output
value. When running, if required, the frequency output can be adjusted
with the REB-CVF dial until the required fan duty point has been
reached.

b. To stop the fan, switch the REB-CVF OFF/ON switch to the “Off”

position. The fan will decelerate over a period of 40 seconds until it
stops.

Or,

61. If a Remote (wired) Switch is connected then change the switch to the “On”

position. The fan will start.

c. The Inverter display will show the climbing frequency output from 0 to

the defined duty point frequency. When the fan has reached the duty
point speed, the frequency count on the display will stop counting at
the corresponding frequency output value.

62. To stop the fan, change the switch to the “Off” position. The fan will

decelerate over a period of 40 seconds until it stops.

63. If a fan failure is detected by current overload then the Inverter will shut

down the fan. If this occurs then “OL3” will be displayed.

Page 17 of 20

Troubleshooting

Fault
Code

Fault Type

Reason

Solution

OL3

Overload

Alarm

1. If connected to a CVAT fan then it
is possible that the motor is
running backwards.

2. The pressure in the system is too
high.

3. The airflow temperature has
exceeded the maximum
temperature of the fan rating plate.

1. Swap any two of the
output phase on U,
V or W.

2. Speak to S&P for
advice.

3. Speak to S&P for
advice.

Lu

Under

Voltage

When

Running

1. The input voltage is too low.

2. Sudden power loss.

3. Input power fault.

4. Poor contact of the DC circuit.

5. Contactor with poor contact.

1. Check the input
voltage.

2. Reset the inverter
and check the input
power.

3. Check the input
power of the grid.

4. Check the main
circuit or ask for
service.

5. Check the contactor
or ask for service.

LP

Input Phase

Loss

1. R, S and T phase loss.

1. Check the input
voltage.

2. Check installation
distribution.

SPo

Output

Phase Loss

1. U, V and W phase loss or serious
asymmetrical three phase of the
load.

1. Check installation
distribution.

2. Check the motor

3. Cable between the
fan and inverter.

OH1

Inverter

Overheat

1. Ambient temperature is too high.

2. The Inverter cooling fan is
damaged.

3. The Inverter cooling channels on
the heatsink are either blocked or
obstructed.

1. Lower the ambient
temperature.

2. Replace the inverter
cooling fan.

3. If the heatsink is
blocked then
remove the
blockage. If the
heatsink is
obstructed then
remove the
obstruction or
relocate the inverter.

64. If after the fan has been running for some time there is a fault condition, then
the reason for the fault needs investigation/correction prior re-energisation.

65. Fault code table

Page 18 of 20

EMC Filters

S&P Code

Description

Suitable for Inverter

L0111000000683

EMC FILTER 1PH -> 3PH 10A

DIG VFD 1-PH>3PH 2.2kW 10A

L0111000000685

EMC FILTER 1PH -> 3PH 25A

DIG VFD 1-PH>3PH 3.7kW 16A

66. As noted (#39), the Inverter is suitable as supplied for connection to the fan
with up to a 25m long connection cable. Installations in excess of this MAX.
25m CABLE LENGTH distance and up to 50m should be fitted also with an
S&P EMC Filter (not supplied however available as an accessory – part codes
below) between the mains supply and the Inverter. In the uncommon
occurrence that the cable length exceeds 50m, a Choke is also required.

Recycling

67. EEC Standards, together with the responsibility we should assume with future
generations in mind, oblige us to recycle all the materials we can. Therefore,
please deposit all left-over material and packaging in their corresponding
recycling containers and hand in the replaced machines to the nearest
handler of this type of waste product.

68. If you have any queries about S&P products, please contact our after-sales
service at your local S&P dealer. If in doubt, please visit our website at

www.solerpalau.co.uk

EC DECLARATION OF CONFORMITY

Herewith we declare that the fan/control designated below, on the basis of its design
and construction in the form brought onto the market by us is, in accordance with the
relevant EC Council Directives on Electromagnetic Compatibility. If alterations are
made to the apparatus without prior consultations with us, this declaration becomes
invalid. We further declare that the equipment identified below may be intended to
be assembled with other equipment/machines to constitute machinery, which shall
not be put into service until the assembled machinery has been declared in
conformity with the provisions of these relevant EC Council Directives.

DESIGNATION OF EQUIPMENT

Relevant EC Council Directives, Electromagnetic Compatibility Directive 2014/30/EU

Page 19 of 20

GUARANTEE

S&P Limited Warranty
36 (THIRTY SIX) MONTH PRODUCT WARRANTY

S&P UK Ventilation Systems Limited warrants that the S&P UK DIGITAL INVERTER
will be free from defective materials and workmanship for the period of 36 (thirty six)
months from the date of original purchase. In the event that we find any part is

defective the product will be repaired or at the company’s discretion, replaced

without charge provided that the product has been installed in accordance with the
enclosed instructions and all applicable standards and national and local building
standards.

IF CLAIMING UNDER WARRANTY

Please return the completed product, carriage paid, to your local authorized
distributor. All returns must be accompanied by a valid Invoice of Sale. All returns
must be clearly marked “Warranty Claim”, with an accompanying description stating
the nature of the fault.

THE FOLLOWING WARRANTIES DO NOT APPLY

Damages resulting from improper wiring or installation.
Damages resulting when using the fan/control with fans/motors/controls/sensors
other than those supplied and manufactured by the S&P Group of Companies.
Removal or alteration of the S&P data plate label.

WARRANTY VALIDATION

The end user must keep a copy of the Invoice of Sale to verify a purchase date.

Page 20 of 20

REV05