TECSYSTEM T119 DIN User manual

operates with ISO9001 certified quality system
http://www.tecsystem.it
R. 1.2 08/02/17
“Translations of the original instructions”
ENGLISH
TECSYSTEM S.r.l.
20094 Corsico (MI)
Tel.: [phone]
Fax: [phone]
T119 DIN
INSTRUCTION MANUAL
1MN0109 REV. 0

2 T119DIN
PAGE
1) SAFETY REQUIREMENTS ………....................................... 3
2) ACCESSORIES ………………………………….. 4
3) TECHNICAL SPECIFICATIONS ………………………………….. 5
4) INTRODUCTION ………………………………….. 6
5) FRONT ………………………………….. 7
•POWER SUPPLY ………………………………….. —
6) PROGRAMMING ………………………………….. 8
•ALARM RELAY TEST ………………………………….. —
•LED TEST ………………………………….. 9
•ALARM 1 RELAY OPERATION …………………………………. —
•ALARM 2 RELAY OPERATION ………………………………….. —
•FAN RELAY OPERATION
(VENTILATION) ………………………………….. —
•DELAYED VENTILATION CYCLE (DELAY ON) ………………………………….. —
•SENSOR DIAGNOSTIC DEVICE ………………………………….. 10
•PTC SENSOR FAULT ………………………………….. —
•PTC SENSOR FAULT DIAGNOSIS ………………………………….. —
•"PTC" TYPE TEMPERATURE SENSORS ………………………………….. —
•PTC TECHNICAL SPECIFICATIONS ………………………………….. 11
•PTC RESISTANCE VALUES ALLOWED FOR
CONNECTION TO T119 DIN ………………………………….. —
7) SENSOR / RELAY ELECTRICAL CONNECTIONS ………………………………….. 12
8) WARRANTY CONDITIONS ………………………………….. 13
9) TROUBLESHOOTING ………………………………….. —
10) EQUIPMENT DISPOSAL ………………………………….. —
11) USEFUL CONTACTS ………………………………….. —
CONTENTS
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

3
T119DIN
SAFETY REQUIREMENTS
ATTENTION :
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 over 50
Volts can be fatal. To reduce the risk of electric shock, do not dismantle the device for any reason. Moreover its
opening would void the warranty.
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: [e-mail] — tel: [phone]

4 T119DIN
The following objects are present inside the box:
Control unit
1 supply terminal 3 poles pitch 5
Code: 2PL0367 - Screws tightening torque 0.5Nm
1 PTC sensor terminal 4 poles pitch 5
Code: 2PL0369 - Screws tightening torque 0.5Nm
1 relay terminal 8 poles pitch 5
Code: 2PL0374 - Screws tightening torque 0.5Nm
ACCESSORIES
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

5
T119DIN
TECHNICAL SPECIFICATIONS
T119DIN
POWER SUPPLY
Supply rated values 24 -240Vac-dc
50/60HZ
Maximum ratings 20-270 Vac-dc
●
Vdc with reversible polarities
●
INPUTS
3 series of PTC inputs
●
1 series for L1 (ALL1)
●
1 series for L2 (ALL2)
●
1 series for FAN
●
Connections to removable terminals
●
Input channels protected against electromagnetic interference
●
OUTPUTS
2 alarm relay (ALL1 / FAULT AND ALL2) SPDT
●
1 ventilation management relay (FAN) with timed latch (5-10-20-40 min.) delay OFF SPST
●
Output relays with 5A-250Vac-res COSФ=1 contacts.
●
DIMENSIONS
106x90 mm DIN43880 depth58 mm (DIN track mounting)
TESTS AND PERFORMANCES
●
Construction in accordance with CE regulations
●
Protection from electrical interference EN 61000-4-4
●
Dielectric strength 1500 Vac for a min. between output relays and sensors, relays and power supply,
power supply and sensors ●
Ambient operating temperature from -20°C to + 60°C
●
Humidity 90% non-condensing
●
Self-extinguishing PPO UL94VO
●

6 T119DIN
INTRODUCTION
TECHNICAL SPECIFICATIONS
T119DIN
Absorption 2 VA
●
Self-diagnostic circuit
●
Protection treatment of the electronic part
Option
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 through keyboard
●
Automatic exit from programming after 1 minute's inactivity
●
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 δNAT 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.

7
T119DIN
FRONT
1) Universal unit supply 24-240 Vac-dc 50/60Hz. 3) Device operation LED
(ON-L1-L2-FAN -FAULT)
2) Relays (ALARM/FAULT- ALL2) 4) L1 - L2 - FAN PTC sensor lines
1
2
3
4
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
z
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.
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.
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.
1MN0109 REV. 0
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 flashin
g
,seePTC SENSOR FAULT DIAGNOSIS on pa
g
e 10.

8 T119DIN
PROGRAMMING
STEP ACTION EFFECT
1Turn on the unit
the green LED lights up
2Push TEST twice in sequence the red PRG LED flashes
3Push TEST within 5" without releasing it until the
PRG LED is ON the PRG LED is ON continuously
4Push TEST within 5" to select the desired FAN
time
the red LED switches from
T1-T2-T3-T4
(FAN time 5’-10’-20’-40’)
5Stop pressing TEST when the LED is on the Tx
corresponding to the desired time. Wait for all the
LEDs to go OFF.
6End of programming
all the LEDs are switched OFF
7 Turn the unit off and then back on
FAN PROGRAMMING CYCLE
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 EFFECT
1
Push TEST three times in sequence
the T1,2,3,4 LEDs light up in
sequence
2
Within 5” push TEST without releasing it until the
LEDs light up all together LEDs T1,2,3,4 flash all together
3
After 5” the relay FAN lights up, followed by the
ALL1 and ALL2 relays
the LEDs and relays of FAN 1-
ALL1-ALL2 are ON
4
END OF THE TEST CYCLE
all the red LEDs go OFF

9
T119DIN
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.
DELAYED VENTILATION CYCLE (DELAY ON)
STEP ACTION EFFECT
1The FAN PTC sensor is ON the FAN relay is ON and the red LED is lit
2The temperature goes below the PTC
value the FAN relay remains ON for the set time and the red LED flashes
3The temperature raises again above the
PTC set threshold the LED is ON all the time
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.

10 T119DIN
"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 (δNAT=operating temperature).
The sensor is calibrated for one temperature only that can vary from 60°C to 190°C, in 10°C (In relation to the acquired
probe), in 10°C steps (60-70-80-90-100-110-120-130-140-145-150-155-160-170-180-190).
The PTCs are electronic thermometric sensors made with a chemical mixture that vary their electrical resistance according
to the recorded temperature.
There is a δNAT (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
δNAT.
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 δNAT -5°C andδNAT +5°K, it is quite difficult to make
adjustments in a temperature span of less than +/- 5°K.
PTC SENSOR FAULT
ACTION EFFECT
one of the PTCs is short-circuited the FLT yellow LED and the corresponding LED
(ALL1-ALL2-FAN) are flashing
replace or repair the PTC the LEDs go OFF
ATTENTION
If the T119 DIN control unit is not connected to the correct PTC model, the LEDS flash.
The PTC temperature is δnat + T = 1300 ohm.
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.
SENSOR DIAGNOSTIC DEVICE
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

P
PT
C
Th
e
Th
e
mul
Se
rv
T
Al
a
Table 1
TEMP
E
From –20
t
From
d
From
d
From d
N
Electri
c
Maximum o
p
TC TECHNICA
C
RESISTANC
E
e
resistance val
u
e
correct opera
t
tiple series of
rv
ice.
T
emperature
o
a
rm thresholds
Sensor
Sensor d
i
E
RATURE
t
o dNAT-20°K
d
NAT –5°K
d
NAT +5°K
N
AT +15°K
c
stiffness
p
erating voltag
e
L SPECIFICA
T
E
VALUES AL
L
u
e shown in ta
b
t
ion of the devi
c
PTCs have re
s
FUNCTION
NO ALARM
o
f the machine
thresholds
ALARM
reached for F
A
FOC
diagnostics i
n
FCC
i
agnostics sh
o
e
T
IONS
L
OWED FOR
C
b
le 1 refers to a
c
e is obtained
b
s
istance values
below the ala
r
A
N-ALL-L1-T
R
n
terrupted
o
rt-circuited
T119DIN
RESISTANC
E
From 20 to 2
5
⊆550
⊆1330
⊆4000
C
ONNECTION
T
single or multi
p
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w
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9
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⊆
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e
contact TEC
S
RESISTANCE
G
HER THAN 5
0
H
ER THAN 18
0
G
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O
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D
VOLTAGE V
⊆2,5
⊆2,5
⊆2,5
7
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5
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e
s. In case the
S
YSTEM Srl -
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0
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0
0 Ω
KΩ
0
Ω
11
DC
single or
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echnical

12
SENS
The AL
picture
s
1)
2)
1
C
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C
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C
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S
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s
L1 - L2 - FAN
P
1
H
1
H
2
H
3
1
2
L1 L2
L
ECTRICAL C
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lay operates n
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n
s
upply 24-240
V
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TC sensor line
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3
4
FAN COM
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NNECTIONS
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rmally when t
h
n
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.
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.
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A
L
A
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2
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contact 5-7 is
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S
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1MN0109
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