Sentera Controls STR-1 Manuale di servizio

Mounting and operating instructions

STANDARD 230 VAC

TRANSFORMER CONTROLLER

POWER RANGE: 10,0—20,0 A

STR-1

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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 DIAGRAM 5

WIRING AND CONNECTIONS 5

MOUNTING INSTRUCTIONS IN STEPS 5

VERIFICATION OF INSTALLATION 7

TRANSPORT AND STORAGE 8

WARRANTY AND RESTRICTIONS 8

MAINTENANCE 8

STANDARD 230 VAC

TRANSFORMER CONTROLLER

STR-1

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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 your

technical support or consult a professional.

STANDARD 230 VAC

TRANSFORMER CONTROLLER

STR-1

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PRODUCT DESCRIPTION

e STR-1 series of transformer fan speed controllers regulate the rotational speed

of single-phase voltage controllable motors by varying the output voltage. ey are

equipped with auto-transformer(s) and control the speed manually in ﬁve steps.

e technology used provides a regulated output voltage with a perfect sinusoidal

shape.

ARTICLE CODES

Article code Rated max. current [A] Fuse (5*20 mm) [A]

STR-1100L22 10,0 F: T-16,0 A-H

STR-1130L22 13,0 F: T-20,0 A-H

STR-1160L20 16,0 F: T-25,0 A-H

STR-1200L20 20,0 F: T-30,0 A-H

INTENDED AREA OF USE

■Speed control of voltage controllable 230 VAC single phase motors

■For indoor use only

TECHNICAL DATA

■Supply voltage: 230 VAC / 50—60 Hz

■Maximum motor current: depends on the version (see article codes)

■Unregulated output: 230 VAC

■Wide power range

■5-step rotary switch for manual control plus oﬀ-position

■LED status indication

■Enclosure: sheet steel (RAL 7035, polyester powder coating)

■Protection standard: IP54 (according to EN 60529)

■Operating ambient conditions:

►Temperature: -20—35 °C

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

STANDARDS

■Low Voltage Directive 2014/35/EC

EMC Directive 2014/30/EC: EN 61326

■WEEE Directive 2012/19/EC

■RoHs Directive 2011/65/EC

STANDARD 230 VAC

TRANSFORMER CONTROLLER

STR-1

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OPERATIONAL DIAGRAM

Operaonal diagram - L22 Operaonal diagram - L20

Regulated output (U)

Unregulated output (L1)

Knob

position

0123 45

230

190

170

140

110

U [VAC]

Knob

position

0123 45

230

170

140

120

100

U [VAC]

Regulated output (U)

Unregulated output (L1)

WIRING AND CONNECTIONS

Connections

L Power supply, line (230 VAC / 50—60 Hz)

NPower supply, neutral

L1 Unregulated output, line

N Regulated output to motor, neutral

U Regulated output to motor, line

Earth terminals

ATTENTION Make sure you use cables with an appropriate diameter.

MOUNTING INSTRUCTIONS IN STEPS

Before you start mounting the STR-1, read carefully “Safety and Precautions”and

follow these steps. Choose a smooth solid surface for installation (a wall, panel, etc.).

Follow these steps:

1. Open the door of the controller. Mind the wires that connect the rotary switch

with the autotransformer or with the printed circuit board, depending on the

product version.

2. Mount the enclosure using corrosion resistant screws or bolts. Mind the correct

mounting position and unit mounting dimensions (see Fig. 1 Mounting dimensions

and Fig. 2 Mounting position). e mounting holes are on the inside back panel of

the enclosure and are covered with blanking plugs.

3. Pay attention to following instructions in order to minimize the operating

temperature:

3.1 Respect the distances both between the wall /ceiling and the device and

between two devices as shown in Fig. 2. In order to ensure suﬃcient

ventilation of the controller, clearance on every side has to be maintained.

STANDARD 230 VAC

TRANSFORMER CONTROLLER

STR-1

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3.2 When installing the device, please keep in mind that the higher you install

it, the warmer the device will get. For example, in a technical room the

correct installation height can be of great importance.

3.3 If maximum ambient temperature cannot be adhered to, please provide

extra forced ventilation / cooling.

Not respecting the abovelisted rules can reduce service life and relieves the

manufacturer of any responsibilities.

4. Once secured in position, the mounting screws or bolts should be sealed to

maintain the IP rating of the enclosure.

5. Because the controller enclosure is made of metal, it must be earthed and bonded

to other existing metal surfaces.

Fig. 1 Mounting dimensions Fig. 2 Mounting position

Correct Incorrect

50 mm50 mm

75 mm

50 mm

Article code A

[mm]

STR-1100L22 300 325 185 255 255

STR-1130L22 300 325 185 255 255

STR-1160L20 300 425 235 255 355

STR-1200L20 300 430 235 255 355

6. Insert the cables through the cable glands and do the wiring according to the

wiring diagram (see Fig. 3) while adhering to the information from section

“Wiring and connections” above.

6.1 Connect the power supply lines (terminals L, N and PE);

6.2 Connect the motor(s) (terminals U, N and PE) ;

6.3 If applicable, connect the unregulated output (L1 and N). It can be used

to supply a 230 VAC valve, lamp, etc. when the knob is not at ‘0’ position

(see Table 1 below).

ATTENTION e earth wire (green-yellow) of the electrical supply and of any equipment

connected to the controller must be connected to the terminals marked as PE.

Fig. 3 Wiring and connections

230 VAC

OUT

230 VAC

L NL1N U

ATTENTION All works must be carried out with equipment fully isolated from the power

supply.

STANDARD 230 VAC

TRANSFORMER CONTROLLER

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ATTENTION Make sure the connections are correct before you power the unit.

7. Close the cover.

8. Turn the knob at ‘0’.

9. Tighten the cable glands.

10.Switch on the mains supply.

11. Make sure the transformer controller can operate normally (consider an isolating

switch).

12. Turn the knob into the relevant position to adjust the output voltage.

Optional settings

e standard conﬁguration of the output voltages is as indicated in Table 1 below.

However, if more than 5 output voltages are available (the L20 and L22 versions), it

is possible to adjust the 5 steps by changing the internal wiring.

Table 1 Voltage series

Knob position 0 - 1 2 3 4 5

Wires -

Regulated output [VAC]

L20 version 0 80* 100 120 140 170 230

L22 versions 080* 110 140 170 190 230

Unregulated output [VAC]

L1 0230 230 230 230 230 230

* Available but not connected.

VERIFICATION OF INSTALLATION

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

electrical devices.

After connecting the unit to the mains supply, the green LED on its cover should

light up indicating that the controller is supplied.

Safe operation depends on proper installation. Before start up, ensure the following:

■e mains supply is connected correctly;

■Protection is provided against electrical shock;

■e cables are the appropriate size and fuse-protected;

■ere is suﬃcient air ﬂow around the unit.

ATTENTION e unit is supplied with electrical energy at voltages high enough to inﬂict personal

injury or threat to health. Take the relevant safety measures.

ATTENTION Disconnect and conﬁrm that there is no live current ﬂowing to the unit before servicing.

ATTENTION Avoid exposing the controller to direct sunlight!

STANDARD 230 VAC

TRANSFORMER CONTROLLER

STR-1

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STANDARD 230 VAC

TRANSFORMER CONTROLLER

STR-1

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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