Sentera Controls SDX-DM Series Manuale di servizio

SDX-DM ELECTRONIC

FAN SPEED

CONTROLLER

Mounting and operating instructions

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SDX-DM 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 8

TRANSPORT AND STORAGE 8

WARRANTY AND RESTRICTIONS 8

MAINTENANCE 8

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SDX-DM 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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SDX-DM ELECTRONIC FAN SPEED

CONTROLLER

PRODUCT DESCRIPTION

e SDX-DM series are electronic fan speed controllers, which allow you to manually

adjust the rotational speed of single phase AC motors by varying the motor voltage

through phase angle control. e output can be regulated from minimum to maximum

or from maximum to minimum. e operating mode can be selected via Modbus

RTU. e controller is suitable for both inset (IP44) and surface mounting (IP54). All

parameters and settings can be adjusted via Modbus RTU communication.

ARTICLE CODES

Output regulation (from low to high or from high to low)

Code Rated current range [A]

SDX-1-15-DM 0,1—1,5

SDX-1-25-DM 0,2—2,5

INTENDED AREA OF USE

■Manual control of the motor / fan speed in HVAC applications

■For indoor use only

TECHNICAL DATA

■Inset or surface mounting

■Supply voltage (Us): 230 VAC / 50—60 Hz

■Spring contact terminal block

■Motor acceleration: kick start (from 2 to 20 seconds) or soft start

■Regulated output to motor: Umin—Us

■Minimum and maximum output voltage are adjustable via Modbus RTU

communication. Vmin: 20—70 % of Us and Vmax: 75—100 % of Us

■Overheating protection

■Operating mode selectable via Modbus RTU: from low to high speed or from high

to low speed

■Enclosure:

►External: ASA, white colour (28049P), IP54 protection (according to EN 60529)

►Internal: polyamide, natural colour, IP44 protection (according to EN 60529)

■Operating ambient conditions:

►temperature: 0—40 °C

►rel. humidity: 5—95 % rH (non-condensing)

STANDARDS

■Low Voltage Directive 2014/35/EU

►EN 60529:1991 Degrees of protection provided by enclosures (IP Code)

Amendment AC:1993 to EN 60529

►EN 60730-1:2011 Automatic electrical controls for household and similar use -

Part 1: General requirements

■EMC directive 2014/30/EU:

►EN 60730-1:2011 Automatic electrical controls for household and similar use -

Part 1: General requirements

►EN 61000-6-1:2007 Electromagnetic compatibility (EMC) - Part 6-1: Generic

standards - Immunity for residential, commercial and light industrial

environments

►EN 61000-6-3:2007 Electromagnetic compatibility (EMC) - Part 6-3: Generic

standards - Emission standard for residential, commercial and light-industrial

environments Amendments A1:2011 and AC:2012 to EN 61000-6-3

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SDX-DM ELECTRONIC FAN SPEED

CONTROLLER

►EN 61000-3-2:2014 Electromagnetic compatibility (EMC) – Part 3-2: Limits -

Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)

■WEEE Direc tive 2012/19/EU

■RoHs Directive 2011/65/EU

OPERATIONAL DIAGRAMS

Low to high speed with soft start Low to high speed with kick start

Uout [%]

Min. Max.

Off

Switch

Potentiometer position

Umax

Umin

Uout [%]

Min. Max.

Off

Switch

Potentiometer position

Umax

Umin

Kickstart

2—20 s

High to low speed with soft start High to low speed with kick start

Uout [%]

Min. Max.

Off

Switch

Potentiometer position

Umax

Umin

Uout [%]

Min. Max.

Off

Switch

Potentiometer position

Umax

Umin

Kickstart

2—20 s

NOTE By default, the desired fan speed or output value is set via the built-in potentiometer.

It is possible to overrule the built-in potentiometer via Modbus RTU communication.

Output overwrite can be enabled via Modbus Holding register 12. When output

overwrite is enabled, the desired output value can be written in Modbus Holding

by writing a value diﬀerent from 0 in Holding register 8. After the time out period

elapses, the output is forced to the minimum output value. If timeout is set to zero,

this function is disabled.

ATTENTION Overheating protection is activated when an excessive load is connected to the

output or in case the ambient temperature exceeds the maximum allowed operating

temperature. When overheating protection is activated, the output is disabled and

overheat condition is indicated in Modbus input register 10. When the overheating

condition is removed, the device automatically resumes operation.

WIRING AND CONNECTIONS

AModbus RTU communication, signals A and /B

LPower supply, line (230 VAC ±10 % / 50—60 Hz)

NPower supply, neutral

U2 Regulated output to motor, neutral

U1 Regulated output to motor, line

Connections Spring contact terminal block, cable cross section: 1,5 mm2; pitch 5 mm

Umax from

75—100 % Us

Umin from

20—70 % Us

Umax from

75—100 % Us

Umax from

75—100 % Us

Umax from

75—100 % Us

Umin from

20—70 % Us

Umin from

20—70 % Us

Umin from

20—70 % Us

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SDX-DM ELECTRONIC FAN SPEED

CONTROLLER

MOUNTING INSTRUCTIONS IN STEPS

Before you start mounting the unit, read carefully “Safety and Precautions” and

follow these steps:

Inset mounting

1. Disconnect the mains supply.

2. Remove the knob by pulling it out.

3. Unscrew the washer to remove the cover of the external enclosure.

4. Do the wiring according to the wiring diagram (see Fig. 1 Wiring and connections).

5. Mount the internal enclosure into the wall according to the mounting dimensions

shown in Fig. 2 Mounting dimensions - inset mounting.

Fig. 1 Wiring and connections

Power Supply:

230 VAC / 50—60 Hz

Regulated output to

motor

Modbus RTU

communication

Fig. 2 Mounting dimensions - Inset mounting

4x ø 3,5mm

Correct Incorrect

NOTE Mount the unit so that the terminal block and connections are at the lower side.

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SDX-DM ELECTRONIC FAN SPEED

CONTROLLER

6. Mount back the cover and secure it with the washer.

7. Put back the knob and turn it to oﬀ position.

8. Turn on the power supply.

Surface mounting

1. Disconnect the mains supply.

2. Remove the knob by pulling it out.

3. Unscrew the washer to remove the cover of the external enclosure.

4. Mount the external enclosure onto the surface by means of the screws and dowels

adhering to the mounting dimensions shown in Fig. 3 Mounting dimensions -

surface mounting.

Fig. 3 Mounting dimensions - surface mounting

63,5

Correct Incorrect

5. Insert the cables through the grommets.

6. Do the wiring according to the wiring diagram (see Fig. 1 Wiring and connections).

7. Insert the internal enclosure into the external one and ﬁx it using the screws.

NOTE Mount the unit so that the terminal block and connections are at the lower side.

8. Mount back the cover and secure it with the washer.

9. Put back the knob and turn it to oﬀ position.

10. Turn on the power supply.

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SDX-DM ELECTRONIC FAN SPEED

CONTROLLER

OPERATING INSTRUCTIONS

ATTENTION Use only tools and equipment with non-conducting handles when working on

electrical devices.

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 should be protected against overheating.

e minimum output value should be adjusted so that the motor cannot stall at

minimum speed. e controller restarts after power failure.

In case of faulty operation

Please check if:

■the right voltage is applied;

■the controller is not overheated;

■the Modbus communication is available;

■all connections are correct;

■the machine to be regulated is functioning.

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.

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