Sentera Controls GTT-1 Manuel de service

Mounting and operating instructions

TEMPERATURE BASED

FAN SPEED CONTROLLER

POWER RANGE: 3,5—7,5 A

GTT-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 5

OPERATIONAL DIAGRAM 5

WIRING AND CONNECTIONS 5

MOUNTING INSTRUCTIONS IN STEPS 6

OPERATING INSTRUCTIONS 7

VERIFICATION OF INSTALLATION 8

TRANSPORT AND STORAGE 8

WARRANTY AND RESTRICTIONS 8

MAINTENANCE 8

TEMPERATURE BASED FAN

SPEED CONTROLLER

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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.

TEMPERATURE BASED FAN

SPEED CONTROLLER

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PRODUCT DESCRIPTION

e GTT 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 of fans in automatic or

manual mode (in ﬁve steps) according to the temperature input of the integrated

ﬂying lead sensor or according to the manual selection.

ARTICLE CODES

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

GTT-1-35L22 3,5 A T 5,0 A-H (5*20 mm)

GTT-1-50L22 5,0 A T 8,0 A-H (5*20 mm)

GTT-1-75L22 7,5 A T 12,5 A-H (5*20 mm)

INTENDED AREA OF USE

■Speed control, according to a measured temperature, of single phase 230 VAC

motors (pumps and fans). Application ﬁeld: greenhouses, stables, sheds

■For indoor use, surface mounted

■Clean air with non-aggressive, non-combustible gases

TECHNICAL DATA

■Supply voltage: 230 VAC / 50—60 Hz

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

■Temperature control: 15—35 °C

■Hysteresis: 0,5 °C

■Proportional range: 5 °C

■7-step rotary switch: Oﬀ position + manual 5-step control + Auto mode

■Plug and play, no wiring needed

■Manual or automatic mode, selectable by switch

■Potentiometer for temperature setpoint selection (range 15—35 °C) in 1°C scale

■Two Schuko IP54 sockets for Euro plugs

■Integrated 1,5 m supply cable with Euro plug

■Integrated ﬂying lead PT500 temperature probe

■Integrated external plate for easy wall ﬁxing

■Enclosure: plastic (R-ABS, UL94-V0, grey RAL 7035)

■Protection standard: IP54 (according to EN 60529)

■Operating ambient conditions:

►Temperature: 0—35 °C

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

TEMPERATURE BASED FAN

SPEED CONTROLLER

GTT-1

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STANDARDS

■Low Voltage Directive 2014/35/EC

■EMC Directive 2014/30/EC: EN 61326

■WEEE Directive 2012/19/ EC

■RoHs Directive 2011/65/EC

OPERATIONAL DIAGRAM

Automatic mode Manual mode

Tset

T,T,

°C

0 / OFF

U [VAC]

15 °C

0,5 °C

1 °C

35 °C

230

190

170

140

110

0123 45

Regulated output (U) Knob position

U [VAC]

0 / OFF

230

190

170

140

110

WIRING AND CONNECTIONS

Wiring and connections

1- Standard power supply

cable with Euro plug (length

1,5 m)

Power supply 230 VAC / 50—60 Hz

2- 2 sockets in parallel for

load connection

Output voltage

OFF + 5 steps

110 / 140 / 170 / 190 / 230 VAC

(80 VAC, optional)

Min. load current 180 mA

3- Temperature sensor

probe

Cable length 4 m

Sensor type PT500 (500 Ω at 0 °C)

Sensor measuring range -30—70 °C

4- Temperature setpoint

potentiometer Operating range 15—35 °C

5- 7-position switch

0Oﬀ position

1—5 Manual fan speed selection

auto Automatic mode

6- Connections Cable gland clamping ranges 3—6 mm / 8—13 mm

Caution: When choosing a controller it is important to know the maximum current on the taps. Make sure you have chosen the right controller. You can take the

indicated rated maximum current from each transformer tap.

ATTENTION Make sure you use cables with an appropriate diameter to connect the fans to

the GTT-1 controller.

TEMPERATURE BASED FAN

SPEED CONTROLLER

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MOUNTING INSTRUCTIONS IN STEPS

Before you start mounting the GTT-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. Drill holes into the surface and secure the fastenings (hooks, wall plugs, etc.)into

them. Mind the correct mounting position and unit mounting dimensions. (See

Fig. 1 Mounting dimensions and Fig. 2 Mounting position.).

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

temperature:

2.1 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.

2.2 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.

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

extra forced ventilation / cooling.

2.4 Leave suﬃcient space around the unit (for load connecting to the sockets).

Allow at least 90—100 mm for connection maintenance (to insert plug/

plugs into the sockets).

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

manufacturer of any responsibilities.

ATTENTION It is recommended to install appropriate protective circuit on the input as

this transformer controller is not internally short-circuit proof. Recommended

automatic circuit breaker with “C” characteristics should be selected according to

the transformer rated maximum current.

ATTENTION Do not install the controller above heating equipment.

Fig. 1 Mounting dimensions Fig. 2 Mounting position

215

199

280

310

320

140

Correct Incorrect

4x ø6

166 50

294

3. Fix the unit onto the wall / panel.

ATTENTION A safety isolator / disconnect switch should be installed on the mains electricity

side of all motor drives.

NOTE e two Schuko sockets are intended only for connecting motors / fans. e total

load connected to both sockets must not exceed the rated maximum current of

the GTT-1 controller. Do not plug other types of electric appliances into them!

TEMPERATURE BASED FAN

SPEED CONTROLLER

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OPERATING INSTRUCTIONS

ATTENTION

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

■Make sure the mains supply voltage is within the admissible rated maximum

current of the product.

1. Switch oﬀ the mains power supply before connecting any power cables.

2. Plug load (fan) cables into the socket according to the connecting diagram.

ATTENTION Several fans can be connected in parallel to the controller as the maximum total

current of all must not exceed the current rating of the controller. Maximum 2

separate cable plugs can be connected to the sockets on the controller as the

parallel connections are made internally.

3. Install the PT500 temperature probe in an appropriate zone in order to measure

the relevant ambient temperature.

4. Plug the GTT-1 into the mains electricity network.

5. Select the operating mode by turning the control switch / knob on the right to

the relevant position (Fig. 3).

Fig. 3 Knob positions

a. Temperature set point selection b. Mode selection

280

310

320

280

310

320

5.1 Manual mode

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

1below.

Output voltage

Knob

position 0 - 1 2 3 4 5 Auto mode

Regulated

output [VAC] 080* 110 140 170 190 230

According to

temperature

setpoint

Speed Oﬀ Low* Low Medium Medium Medium High

According to

measured

temperature

* Available but not connected.

5.2 Automatic mode

When Auto mode has been selected, the controller changes the ﬁve

speeds automatically according to the setpoint temperature selected via

the temperature potentiometer (Fig. 3a). e speed changes by increasing

/ decreasing the temperature by 1 °C and 0,5 °C ﬁxed hysteresis (see the

operational diagram above).

TEMPERATURE BASED FAN

SPEED CONTROLLER

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TEMPERATURE BASED FAN

SPEED CONTROLLER

GTT-1

VERIFICATION OF INSTALLATION

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

electrical devices.

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!

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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