Sentera Controls MT Service manual

MT ELECTRONIC FAN SPEED
CONTROLLER
Mounting and operating instructions

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MT ELECTRONIC FAN SPEED
CONTROLLER
Table of contents
SAFETY AND PRECAUTIONS 3
PRODUCT DESCRIPTION 4
ARTICLE CODES 4
INTENDED AREA OF USE 4
TECHNICAL DATA 4
STANDARDS 4
OPERATIONAL DIAGRAMS 5
WIRING AND CONNECTIONS 5
MOUNTING INSTRUCTIONS IN STEPS 6
OPERATING INSTRUCTIONS 7
TRANSPORT AND STORAGE 8
WARRANTY AND RESTRICTIONS 8
MAINTENANCE 8

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MT ELECTRONIC FAN SPEED
CONTROLLER
SAFETY AND PRECAUTIONS
Read all the information, the datasheet, Modbus map, mounting and operating
instructions and study the wiring and connection diagram before working with
the product. For personal and equipment safety, and for optimum product
performance, make sure you entirely understand the contents before installing,
using or maintaining this product.
For safety and licensing (CE) reasons, unauthorised conversion and/ or modifications
of the product are inadmissible.
e product should not be exposed to abnormal conditions, such as extreme
temperatures, direct sunlight or vibrations. Long-term exposure to chemical
vapours in high concentration can affect the product performance. Make sure the
work environment is as dry as possible; avoid condensation.
All installations shall comply with local health and safety regulations and local
electrical standards and approved codes. is product can only be installed by
an engineer or a technician who has expert knowledge of the product and safety
precautions.
Avoid contacts with energised electrical parts. Always disconnect the power
supply before connecting, servicing or repairing the product.
Always verify that you apply appropriate power supply to the product and use
appropriate wire size and characteristics. Make sure that all the screws and nuts
are well tightened and fuses (if any) are fitted well.
Recycling of equipment and packaging should be taken into consideration and these
should be disposed of in accordance with local and national legislation/regulations.
In case there are any questions that are not answered, please contact your
technical support or consult a professional.

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MT ELECTRONIC FAN SPEED
CONTROLLER
PRODUCT DESCRIPTION
e MT controllers provide manual control of the rotational speed of voltage
controllable motors (230 VAC / 50 Hz) by varying the supplied voltage through
phase angle control. ey are suitable for both inset and surface mounting. Several
motors can be connected as long as the current limit is not exceeded. All models
have an extra (unregulated) 230 VAC output.
ARTICLE CODES
Output regulation from minimum to maximum
Code Current range, [A] Fuse, [A] (5*20 mm)
MTY-0-05-AT 0,05—0,5 F-0,63 A-H
MTY-0-15-AT 0,1—1,5 F-2,00 A-H
MTY-0-25-AT 0,2—2,5 F-3,15 A- H
MTY-0-40-AT 0,4—4,0 F-5,00 A-H
Output regulation from maximum to minimum
Code Current range, [A] Fuse, [A] (5*20 mm)
MTX-0-05-AT 0,05—0,5 F-0,63 A-H
MTX-0-15-AT 0,1—1,5 F-2,00 A-H
MTX-0-25-AT 0,2—2,5 F-3,15 A- H
MTX-0-40-AT 0,4—4,0 F-5,00 A-H
INTENDED AREA OF USE
■Manual control of the motor / fan speed in HVAC applications
■For indoor use only
TECHNICAL DATA
■Infinitely variable fan speed control
■Power supply: 230 VAC ±10 % / 50 Hz
■Unregulated input / output: 230 VAC / max. 2 A
■OFF position can be disabled to obtain continuous operation of the fan
■Regulated output: 80—230 VAC
■Minimum speed adjustment by trimmer
■Speed control:
►MTX – from maximum to minimum
►MTY – from minimum to maximum
■Enclosure:
►External: ASA, white-ivory (RAL9010), IP54 (according to EN 60529)
►Internal: polyamide, white-ivory (RAL9010), IP44 (according to EN 60529)
■Operating ambient conditions:
►temperature: 0—35 °C
►rel. humidity: < 100 % rH (non-condensing)
■Storage temperature: -10—40 °C
STANDARDS
■Low Voltage Directive 2006/95/EC
►EN 60335-1:2012 Household and similar electrical appliances - Safety - Part 1:
General requirements. Amendment A11:2014 and AC:2014 to EN 603351;2012
►EN 61558-1:2005 Safety of power transformers, power supplies, reactors and
similar products - Part 1: General requirements and tests. Amendment A:2006
and A1:2009 to EN 61558-1:2005

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MT ELECTRONIC FAN SPEED
CONTROLLER
■EMC Directive 2004/108/EC: EN 61326
►EN 61000-6-2: 2005 Electromagnetic compatibility (EMC) - Part 6-2: Generic
standards - Immunity for industrial environments. Amendment AC:2005 to EN
61000-6-2:2005
►EN 61000-6-3:2007 Electromagnetic compatibility (EMC) - Part 6-3: Generic
standards - Emission standards for residential, commercial and light-industrial
environments. Amendment A1:2011 and AC:2012 to EN 61000-6-3:2007
■WEEE Directive 2012/19/EU
■RoHs Directive 2011/65/EU
OPERATIONAL DIAGRAMS
MTX series (from maximum to minimum)
OFF position enabled: supply voltage connected to and N OFF position disabled: supply voltage connected to and N
Uout [%]
Us
Umin
range
70 %
Min Max
Off
Switch
On
0
20 %
Potentiometer position
Uout [%]
Us
Umin
range
70 %
Min Max
0
20 %
Potentiometer position
MTY series (from minimum to maximum)
OFF position enabled: supply voltage connected to and N OFF position disabled: supply voltage connected to and N
Uout [%]
Us
Umin
range
70 %
Min Max
Off
Switch
On
0
20 %
Potentiometer position
Uout [%]
Us
Umin
range
70 %
Min Max
0
20 %
Potentiometer position
WIRING AND CONNECTIONS
Power supply (230 VAC ±10 % / 50 Hz)
Unregulated output / input (230 VAC / max. 2 A) to disable OFF
position
NNeutral
Regulated output to motor
Connections Cable cross section: max. 2,5 mm2
ATTENTION To disable the OFF position, connect the 230 VAC supply voltage to the
unregulated output (). In this case do not connect the power supply to: .

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MT ELECTRONIC FAN SPEED
CONTROLLER
MOUNTING INSTRUCTIONS IN STEPS
Before you start mounting the unit, read carefully “Safety and Precautions”. en
proceed with the following mounting steps:
For inset mounting
1. Remove the knob by turning it to the right until it pops out.
2. Unscrew the loose nut to remove the cover of the external enclosure.
3. Do the wiring according to the wiring diagram (see Fig. 1 “Wiring and connections”).
Fig. 1 Wiring and connections
Minimum
speed
adjustment
trimmer
Fuse holder with a spare fuse
4. Mount the internal enclosure into the wall according to the mounting dimensions
shown in Fig. 2. “Mounting dimensions - inset mounting”.
Fig. 2 Mounting dimensions - inset mounting
82
82
26 33
50x50
62
50
62
60
62
50
62
60
5. Turn on the mains voltage and the controller.
6. Adjust the minimal speed and turn off the controller.
7. Mount back the cover using the nut.
8. Put back the knob and turn it to off position.

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MT ELECTRONIC FAN SPEED
CONTROLLER
For surface mounting
1. Disconnect the mains supply.
1. Remove the knob by turning it to the right until it pops out.
2. Unscrew the loose nut to remove the cover of the external enclosure.
3. Mount the external enclosure onto the surface by means of screws and dowels
(notincluded) adhering to the mounting dimensions shown in Fig. 3. “Mounting
dimensions - surface mounting”.
Fig. 3 Mounting dimensions - surface mounting
82
89
69
82
62
62
4. Insert the cables through the grommets.
5. Do the wiring according to the wiring diagram (see Fig. 1 “Wiring and connections” ).
6. Insert the internal enclosure into the external one and fix it using the screws and
washers included in the set.
7. Turn on the mains voltage and the controller.
8. Adjust the minimal speed and turn off the controller.
9. Mount back the cover using the nut.
10. Put back the knob and turn it to off position.
NOTE A 5 mm hole can be drilled at the bottom of the external enclosure to drain the
condensed water.
OPERATING INSTRUCTIONS
e controller is to be used only with voltage controllable fans/ motors. You can
connect several motors to the controller as long as the current limit is not exceeded.
e motor used should be protected internally against overheating.
e trimmer is adjusted so that the motor does not stop due to mains voltage
variations. e controller restarts after power failure.
In case of faulty operation
Please check if:
■the right voltage is applied;
■all connections are correct;
■the machine to be regulated is functioning;
■the fuse of the controller is OK.
In case that the fuse has blown up, remove the knob by turning it to the right, beyond
the end stop and then pull. Open the cover and unscrew the nut. Remove the fuse
holder with the help of a screwdriver. Replace the fuse. Mount all the parts back in
place.
ATTENTION Use only fuses with type and rating specified above.

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MT ELECTRONIC FAN SPEED
CONTROLLER
TRANSPORT AND STORAGE
Avoid shocks and extreme conditions; stock in original packing.
WARRANTY AND RESTRICTIONS
Two years from the delivery date against defects in manufacturing. Any modifications
or alterations to the product after the date of publication relieve the manufacturer
of any responsibilities. e manufacturer bears no responsibility for any misprints or
mistakes in this data.
MAINTENANCE
In normal conditions this product is maintenance-free. If soiled, clean with a dry or
damp cloth. In case of heavy pollution, clean with a non-aggressive product. In these
circumstances the unit should be disconnected from the supply. Pay attention that
no fluids enter the unit. Only reconnect it to the supply when it is completelydry.