Sentera SDX-DM 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 6

MOUNTING INSTRUCTIONS IN STEPS 6

OPERATING INSTRUCTIONS 8

TRANSPORT AND STORAGE 9

WARRANTY AND RESTRICTIONS 9

MAINTENANCE 9

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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

■Unregulated output: 230 VAC / max. 2 A

■Minimum speed adjustment by trimmer: 20—70 % of Us

■Overheating protection

■Output regulation from low to high speed or from high to low speed, selectable via

Modbus Holding register 17

■Enclosure:

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

►Internal: polyamide, natural colour, IP44 (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/EC

OPERATIONAL DIAGRAMS

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

Uout [%]

Umin

range

Min Max

Off

Switch

Potentiometer position

Umax

range Umax

Umin

Uout [%]

Umin

range

Min Max

Off

Switch

Potentiometer position

Umax

range Umax

Umin

Kickstart

durattion

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

Uout [%]

Umin

range

Min Max

Off

Switch

Potentiometer position

Umax

range Umax

Umin

Uout [%]

Umin

range

Min Max

Off

Switch

Potentiometer position

Umax

range Umax

Umin

Kickstart

durattion

NOTE In Active mode the regulated output can be controlled by the potentiometer or via

a dedicated Modbus register (in this case a Modbus safety timeout is available). If

the Modbus RTU communication is lost, a timeout can be set in Modbus Holding

up type can be kick start or soft start.

ATTENTION Protection against overheating is included in case an external load is connected

to the output or if the controller is operating at higher temperature. When the

overheating protection is activated, the regulated output will be turned oﬀ and

the status of overheating will be displayed in a Modbus register (Input register

10). e device will resume operation when the overheating condition is resolved.

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SDX-DM ELECTRONIC FAN SPEED

CONTROLLER

WIRING AND CONNECTIONS

AModbus RTU communication, signal 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

MOUNTING INSTRUCTIONS IN STEPS

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

follow these steps:

Inset mounting

1. Disconnect the power supply.

2. Remove the knob by pulling it out and open the cover.

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 - ﬂush mounting.

Fig. 1 Wiring and connections

Power Supply:

230 VAC / 50—60 HZ

Regulated output to

motor

Minimum speed

adjustment trimmer

(factory pre set to

100 VAC)

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SDX-DM ELECTRONIC FAN SPEED

CONTROLLER

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 bottom.

6. Adjust the Vmin trimmer in order to set the minimum speed.

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

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

9. Turn on the power supply.

Surface mounting

1. Disconnect the power supply.

2. Remove the knob by pulling it out and open the cover.

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.

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SDX-DM ELECTRONIC FAN SPEED

CONTROLLER

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 bottom.

8. Adjust the Vmin trimmer in order to set the minimum speed.

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

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

11. Turn on the power supply.

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 speed trimmer 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

■all connections are correct

■the machine to be regulated is functioning

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SDX-DM 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.

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