TECSYSTEM T119 DIN Instruction Manual

INSTRUCTION MANUAL

T119 DIN

1MN0109 REV. 0

operates with ISO9001:2008 certified quality system

TECSYSTEM S.r.l.

20094 Corsico (MI)

Tel.: +39-024581861

Fax: +39-0248600783

http://www.tecsystem.it

R. 1.0 30/03/15

ENGLISH

Translations of the original instructions

INTRODUCTION

First of all we wish to thank you for choosing to use a TECSYSTEM product and recommend you read this instruction manual carefully: You will understand the use of the equipment and therefore be able to take advantage of all its functions.

ATTENTION! THIS MANUAL IS VALID AND COMPLETE FOR THE T119 DIN CONTROL UNIT

CONTENTS

1) SAFETY REQUIREMENTS

2) ACCESSORIES

3) TECHNICAL SPECIFICATIONS

4) INTRODUCTION

5) FRONT

POWER SUPPLY

6) PROGRAMMING

ALARM RELAY TEST

LED TEST

ALARM 1 RELAY OPERATION

ALARM 2 RELAY OPERATION

FAN RELAY OPERATION

(VENTILATION)

DELAYED VENTILATION CYCLE (DELAY ON)

SENSOR DIAGNOSTIC DEVICE

PTC SENSOR FAULT

PTC SENSOR FAULT DIAGNOSIS

"PTC" TYPE TEMPERATURE SENSORS

PTC TECHNICAL SPECIFICATIONS

PTC RESISTANCE VALUES ALLOWED FOR

CONNECTION TO T119 DIN

7) SENSOR / RELAY ELECTRICAL CONNECTIONS

8) WARRANTY CONDITIONS

9) TROUBLESHOOTING

10) EQUIPMENT DISPOSAL

11) USEFUL CONTACTS

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T119DIN

SAFETY REQUIREMENTS

Read the manual carefully before starting to use the control unit. Keep the instructions for future reference.

Do not open the device, touching any internal components can cause electric shock. Contact with 110-240

Before connecting the device to the power supply, make sure that all the connections are correct. Always disconnect the unit from the supply before any cabling modification.

Any intervention on the equipment must be entrusted to a qualified engineer.

Failure to comply with these instructions can cause damages, fires or electric shock, and possible serious injuries!

POWER SUPPLY

The T119 DIN control unit has UNIVERSAL power supply, i.e. it can be supplied by 24 to 240 Vac-Vdc, irrespectively of polarity in Vdc. Before using it, make sure the power cable is not damaged, knotted or pinched. Do not tamper with the power cable. Never disconnect the unit by pulling the cable, avoid touching the pins. Do not carry out any connecting/disconnecting with wet hands. To disconnect the device, do not use objects such as levers. Immediately disconnect the device if you smell burning or see any smoke: contact technical service.

LIQUIDS

Do not expose the equipment to splashes or drops, do not position it in places with humidity exceeding 90% and never touch with wet or humid hands during storms. If any liquid penetrates the control unit, disconnect it immediately and contact technical service.

CLEANING

Disconnect the power cable before cleaning the control unit, use a dry cloth to dust it, without any solvent or detergents, and compressed air.

OBJECTS

Never insert any objects into the cracks of the control unit. If this happens, disconnect the control unit and contact an engineer.

USE RESERVED TO QUALIFIED PERSONNEL

The purchased goods are a sophisticated electronic device that is totally unsuitable to be used by non-qualified personnel. Any work must be carried out by a specialist engineer.

ACCESSORIES

The use of non-original accessories or spare parts can damage the unit and endanger users safety. In the event of faults, contact technical service.

LOCATION

Install the control unit indoors, in a place protected from water splashes and sun rays. Do not place near heat sources exceeding the parameters stated in this manual. Position on a stable surface, far from any possible vibrations. Position the unit as far as possible from any intense magnetic fields.

REPAIRS

Do not open the control unit. For any fault, always use qualified personnel. The opening of the control unit and/or the removal of the series identifying label entails the automatic forfeiture of the warranty. The Warranty seal is applied to all devices, any attempt to open the unit would break the seal and cause the consequent automatic forfeiture of the warranty.

TECHNICAL INFORMATION

Mail: [email protected]  tel: 02/4581861

ATTENTION :

Volts can be fatal. To reduce the risk of electric shock, do not dismantle the back of the device for any reason. Moreover its opening would void the warranty.

3

T119DIN

ACCESSORIES

Control unit

Instruction manual CD

1 supply terminal 3 poles pitch 5 Code: 2PL0367

1 PTC sensor terminal 4 poles pitch 5 Code: 2PL0369

1 relay terminal 8 poles pitch 5 Code: 2PL0374

ATTENTION: always install the device using the terminals included in the pack. The use of terminals other than those included with the control unit might cause malfunctions.

1MN0030 REV. 0

4

T119DIN

TECHNICAL SPECIFICATIONS

AUXILIARY POWER SUPPLY

T119DIN

Supply rated values

Maximum ratings 20-270 Vac-dc

Vdc with reversible polarities

INPUTS

3 series of PTC inputs:

1 series for L1 (ALARM)

1 series for L2 (TRIP)

1 series for FAN

Connections to removable terminals

Input channels protected against electromagnetic interference

OUTPUTS

1 alarm relay (ALARM / FAULT AND TRIP) SPDT

1 ventilation management relay (FAN) with timed latch (5-10-20-40 min.) delay OFF SPST

Output relays with 5A-250Vac-res COS =1 contacts.

DIMENSIONS

24 -240Vac-dc

50/60HZ

106x90 mm DIN43880 depth58 mm (DIN track mounting)

TESTS AND PERFORMANCES

Assembly in compliance with EC rules

Protection against electrical and magnetic noises CEI-EN6100-4-4

Dielectric strength 1500 Vac for a min. between output relays and sensors, relays and power supply, power supply and sensors

Working temperature from -20°C to + 60°C

Humidity 90% non-condensing

ABS self-extinguishing housing  NORYL 94VO

T119DIN

5

TECHNICAL SPECIFICATIONS

Demand 2 VA

Self-diagnostic circuit

Protection treatment of the electronic part

DISPLAY AND DATA MANAGEMENT

LED indicating alarm channel, trip or fan

LED indicating FAULT

2 alarm thresholds

1 ventilation control ON threshold

Access to programming via the frontal push button

Automatic exit from programming after 1 minute's inactivity

T119DIN

Option

INTRODUCTION

The T119 DIN is the most advanced unit on the market as regards temperature monitoring units for MV cast resin transformers which utilize PTC sensors.

The unit gives the L1 pre-alarm and L2 alarm-trip signals when the temperature limits sensed by the PTCs in the coils are reached.

The T119 DIN is set to control the cooling ventilation of the transformer. The T119 DIN continuously monitors the efficiency of the PTC sensors and when one of these fails, an immediate alarm signal of faulty sensor is sent.

The FAN relay is energized so long as the temperature T° is higher than the NAT value; when T° gets below this value, the relay is still energized for the set ventilation time (5-10-20-40) (DELAY OFF function).

As the PTCs currently produced by the various European manufacturers have different specifications, Tecsystem Srl is not responsible for the control system malfunctioning due to PTCs with resistance values other than those indicated in table 1.

6

T119DIN

FRONT

z

4

1

3

1) Universal unit supply 24-240 Vac-dc 50/60Hz. 3) Device operation LED

2) Relays (ALARM/FAULT- ALL2) 4) L1 - L2 - FAN PTC sensor lines

LED SIGNAL:

LED ON: "ON" The device is powered correctly "OFF" The device is not powered correctly L1 LED: "ON" L1 trip threshold exceeded "OFF" temperature below the L1 trip threshold. L2 LED: "ON" L2 trip threshold exceeded "OFF" temperature below the L2 trip threshold. FAN LED: "ON" FAN trip threshold exceeded "OFF" temperature below the FAN trip threshold. FAULT LED - L1 LED - L2 LED - FAN LED flashing see PTC SENSOR FAULT DIAGNOSIS on page 10.

POWER SUPPLY

The T119 DIN control unit has UNIVERSAL power supply, i.e. it can be supplied by 24 to 240 Vac-Vdc, 50/60 H irrespectively of polarity in Vdc (terminals 40-42).

This is obtained thanks to the use of a tested power supply unit, newly designed and manufactured, that frees installers from worrying about the correct Vac or Vdc supply.

The ground cable must always be connected to terminal 41.

When the unit is supplied directly by the secondary of the transformer to protect, it can be burnt out by strong overvoltages. This happens if the main switch is closed and the transformer has no load (blank test). The above-mentioned problems are much more evident when the 220 Vac voltage is taken directly from the transformer secondary bars and there is a fixed capacitor battery to phase the transformer itself.

2

(ON-L1-L2-FAN -FAULT)

1MN0109 REV. 0

To protect the control unit from line overvoltages, we suggest using the PT-73- 220 electronic discharger, designed by TECSYSTEM S.r.l. for this specific purpose. As an alternative we suggest using supply voltages from 110 Vac or, much better, 110 Vdc.

If an existing control unit must be replaced with a new one, to guarantee its correct and safe operation, the sensor/relay/supply connecting terminals must be replaced with the new terminals supplied.

T119DIN

7

PROGRAMMING

FAN PROGRAMMING CYCLE

STEP ACTION

Turn on the unit

1

Push TEST twice in sequence the red PRG LED flashes

2

Push TEST within 5" without releasing it until the

3

PRG LED is ON

Push TEST within 5" to select the desired FAN

4

time

Stop pressing TEST when the LED is on the Tx corresponding to the desired time. Wait for all the

5

LEDs to go OFF.

End of programming

6

Turn the unit off and then back on

7

the green LED lights up

the PRG LED is ON continuously

the red LED switches from T1-T2T3-T4 (FAN time 5-10-20-40)

all the LEDs are switched OFF

EFFECT

To choose the FAN time (point 4):

Press TEST once to select 5' (T1 ON) Press TEST twice to select 10' (T2 ON) Press TEST three times to select 20' (T3 ON) Press TEST four times to select 40' (T4 ON) If you dont need any FAN cycle, push TEST 5 times (all LEDs are OFF). The unit is programmed only for ALL1 and ALL2 (alarm and trip)

ALARM RELAY TEST

STEP ACTION

push TEST three times in sequence

1

Within 5 push TEST without releasing it until the LEDs light up all together

2

after 5 the relay FAN lights up, followed by the ALL1 and ALL2 relays

3

END OF THE TEST CYCLE

4

the T1,2,3,4 LEDs light up in

sequence

LEDs T1,2,3,4 flash all together

the LEDs and relays of FAN 1-

ALL1-ALL2 are ON

all the red LEDs go OFF

EFFECT

8

T119DIN

LED TEST

We recommend the unit LEDS are tested regularly. For this operation press the TEST button briefly, all the leds light up for 2 seconds.

If one of the LED does not work, please return the control unit to TECSYSTEM for repair.

ALARM 1 RELAY OPERATION

The ALL1 (L1) relay operates when the unit is powered, therefore the N.O. contact is closed. In case of an alarm on the ALL1 (L1) PTC or a fault in the control unit itself, the relay gets de-energised with consequent closing of the N.C. contact.

The ALL1 (L1) relay also has the same function as the PTC sensor FAULT. If this relay is triggered when the PTC sensor FAULT LED is FLASHING, it means that there is an error in the reading of a PTC sensor. It is possible to find it, thanks to a second LED flashing which corresponds to the FAULT channel.

ALARM 2 RELAY OPERATION

The ALL2 (L2) relay is normally de-energized and energizes when there is an alarm on the L2 PTC.

FAN RELAY OPERATION (VENTILATION)

During programming, it is possible to set the cooling time or to exclude the FAN option. If the FAN is excluded, the relay doesnt energize and for this reason it is possible not to install the corresponding PTC.

If the FAN is set up, the relay activates when the relative PTC sends the first signal and the FAN LED is steady ON: the relay is active for as long as the PTC senses the temperature is normal, the T119 DIN unit keeps the relay ON for the time set during programming and the FAN LED flashes.

DELAYED VENTILATION CYCLE (DELAY ON)

STEP

1 the FAN PTC sensor is ON the FAN relay is ON and the red LED is lit

the temperature goes below the PTC

2

value

the temperature raises again above the

3

PTC set threshold

ACTION

EFFECT

the FAN relay remains ON for the set time and

the red LED flashes

the LED is ON all the time

IMPORTANT WARNING

Before carrying out the isolation test of the electrical panel the control unit is installed on, disconnect it with the sensors from the power supply to prevent it from being seriously damaged.

T119DIN

9

SENSOR DIAGNOSTIC DEVICE

This new function allows enabling or disabling the PTC diagnostic device (Foc and Fcc):

Diagnostics disabling method:

power the instrument keeping the TEST button pressed until the FAULT LED comes ON

With the diagnostics disabled, the FAULT yellow LED will be ON all the time.

Diagnostics re-enabling method

Power the instrument keeping the TEST button pressed until all LEDs go OFF. With the diagnostics enabled, the FAULT yellow LED will be OFF and flash in case of sensor faults.

The T119 DIN control units will be supplied with the sensor diagnostics ENABLED.

PTC SENSOR FAULT

ACTION

EFFECT

one of the PTCs is short-circuited

replace or repair the PTC

PTC SENSOR FAULT DIAGNOSIS

If one of the PTCs is short-circuited or open you get the following warnings:

PTC alarm ALL1(L1) The FAULT + ALL1 LEDs are flashing PTC TRIP release ALL2(L2) The FAULT + ALL2 LEDs are flashing PTC FAN FAN The FAULT +FAN LEDs are flashing

ATTENTION If the T119 DIN control unit is not connected to the correct PTC model, the LEDS flash. The PTC temperature is nat + T = 1300 ohm.

"PTC" TYPE TEMPERATURE SENSORS

The PTCs can be compared to bimetallic thermostats where the contact opens and closes at the approximate temperature, defined as their operating characteristic ( NAT=operating temperature).

The thermostat is calibrated for one temperature only that can vary from 60 to 180°C, in 10°C steps (60-70-80-90-100-110120-130-140-145-150-155-160-170-180).

The electric contact of the bimetallic thermostat opens and closes at different temperatures, always approximately +/- of the operating temperature NAT.

The difference between the opening and closing temperatures of the electric contact defines the operational differential of thermostat T°.

Very precise and expensive bimetallic thermostats can adjust the temperature at +/- 1°C of NAT; the normal bimetallic thermostats have an adjustment precision reaching 3-5°C. The PTCs are electronic thermometric sensors made with a chemical mixture that vary their electrical resistance according to the recorded temperature.

There is a NAT (operating temperature) for the PTCs as well as for the bimetallic thermostats. The PTCs do not allow precision adjustments since the characteristic resistance values are fixed at 5°C and +5°K of

NAT.

The PTC characteristic resistance values are set by the DIN 44081 and 44082 standards.

Since the PTC resistance curve is very rapid, in the section between NAT -5°C and NAT +5°C, it is quite difficult to make adjustments in a temperature span of less than +/- 5°K.

If you use high temperature alarm systems, they obviously do not offer the device a high degree of precision.

the FLT yellow LED and the corresponding LED

(ALL1-ALL2-FAN) are flashing

the LEDs go OFF

10

T119DIN

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11

T119DI

SENSOR / RELAY ELECTRICAL CONNECTIONS

1

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1MN0109 REV. 0

1) Universal unit supply 24-240 Vac-dc 50/60Hz. 3) Relays (ALARM/FAULT-ALL2-FAN)

2) L1 - L2 - FAN PTC sensor lines

PTC SENSORS

L1 L2 FAN COM

RELAYS

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CH2

CH3

ALARM / FAULT

AUDIO AND VISUAL INDICATION

STOP SYSTEM

1MN0095 REV. 0

The ALARM / FAULT relay operates normally when the unit is powered, therefore contact 5-7 is closed. The above picture shows the state of the relays in non-alarm condition.

12

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T119DI