Sentera Controls MTY-7-15-AT Service manual

Mounting and operating instructions
ELECTRONIC FAN SPEED
CONTROLLER
MTY-7-15-AT

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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 5
OPERATING INSTRUCTIONS 7
TRANSPORT AND STORAGE 8
WARRANTY AND RESTRICTIONS 8
MAINTENANCE 8
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SAFETY AND PRECAUTIONS
Read all the information, the datasheet, 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 our technical
support or consult a professional.
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ELECTRONIC FAN SPEED
CONTROLLER

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PRODUCT DESCRIPTION
e MTY-7-15-AT controllers provide manual speed control of single-phase voltage
controllable motors (120 VAC / 60 Hz) through phase angle control. ey feature a
potentiometer for output voltage adjustment and an internal trimmer for infrequent
minimum speed setting. e controllers are suitable for both inset and surface
mounting. Several motors can be connected as long as the current limit is not
exceeded.
ARTICLE CODES
Article code Power supply Output
MT Y-7-15-AT 120 VAC ±10 % / 60 Hz 120 VAC / max. 1,5 A
INTENDED AREA OF USE
■Manual control of the motor / fan speed in HVAC applications
■For indoor use only
TECHNICAL DATA
■Power supply: 120 VAC ±10 % / 60 Hz
■Output: 120 VAC / max. 1,5 A
■Rated current range: 0,1—1,5 A
■Minimum speed adjustment by trimmer: 40—120 VAC
■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: < 95 % rH (non-condensing)
■Storage temperature: -10—40 °C
STANDARDS
■Low Voltage Directive 2006/95/EC
■EMC Directive 2004/108/EC: EN 61326
■WEEE Direc tive 2012/19/ EU
■RoHs Directive 2011/65/EU
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CONTROLLER

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OPERATIONAL DIAGRAMS
MT Y-7-15-AT
120
40
Vout [VAC]
Maximum
speed
Minimum
speed
OFF
0Knob
Position
WIRING AND CONNECTIONS
Power supply (120 VAC ±10 % / 60 Hz)

Unregulated output voltage 120 VAC / max. 1,5 A for connecting a
lamp, valve, three-wire motor connection, etc.; branched off after
the input to bypass the potentiometer
NNeutral (power supply & unregulated output)
N Regulated output to motor, neutral
Regulated output to motor
Connections Cable cross section: max. 2,5 mm2
MOUNTING INSTRUCTIONS IN STEPS
Before you start mounting MTY-7-15-AT, read carefully “Safety and
Precautions”. Then 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 nut to remove the cover of the external enclosure.
3. Do the wiring according to the wiring diagram (see Fig. 1 Wiring and connections).
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Fig. 1 Wiring and connections
Minimum speed
adjustment trimmer
(factory pre-set to
100 VAC)
Power supply
(120 VAC ±10 % / 60 Hz)
Unregulated output voltage
120 VAC / max. 1,5 A
Unregulated output, neutral
Regulated output to motor
Regulated output to motor, neutral
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. Using a flat screwdriver, adjust the Vmin trimmer (the factory setting is 100 VAC ).
6. Mount back the cover and secure it with the nut.
7. Put back the knob and turn it to off position.
8. Turn on the power supply.
For surface mounting
1. Remove the knob by turning it to the right until it pops out.
2. Unscrew the 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.
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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.
NOTE Mount the unit so that the terminal block and connections are at the lower side.
7. Using a flat screwdriver, adjust the Vmin trimmer (the factory setting is 100 VAC ).
8. Mount back the cover and secure it with the nut.
9. Put back the knob and turn it to off position.
10.Turn on the power supply.
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; otherwise, loss of warranty
will ensue.
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ELECTRONIC FAN SPEED
CONTROLLER

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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.
MTY-7-15-AT
ELECTRONIC FAN SPEED
CONTROLLER