TECSYSTEM T1168 User manual

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T1168
INSTRUCTION MANUAL
TECSYSTEM S.r.l.
20094 Corsico (MI)
Tel.: [phone]
Fax: [phone]
TECSYSTEM S.r.l ®
R. 1.2 07/09/12
T1168

2T1168
TECSYSTEM S.r.l ®
This product complies with
RoHS 2002/95 Directive
All the substances banned by the above mentioned Directive are excluded by such product.
TECSYSTEM inform that up to now significant results of the long-time tests on lead-free weldings are
not available. Therefore, any defect of the welding won’t be covered by the guarantee.
For all the details, please make reference to the text of the Directive in object.
*LAY-OUT OF FIXING TEMPLATE HOLES
120
100
Ø 5
FLAT CABLE
Place the flat cable strip
in this position
Place the flat cable strip
in this position
Connettore per flat
Cable tastiera
Upper side of the housing
Coperchio visto dal retro
Connector for keyboard
Flat Cable
FIGURE 1
Cover seen from the rear side
Connector for keyboard
Flat Cable

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1) TECHNICAL SPECIFICATIONS
SUPPLY
• 230 Vac ±10% 50/60 Hz
DIMENSIONS
• 136x115mm
INPUTS
• 3 inputs RTD Pt100 - 2 wires for sensor
connection on board machine
• Removable rear terminals
• Input channels protected against elec-
tromagnetic noises and spikes
OUTPUTS
• 1 alarm relay L1 and sensor fault FAULT
• 1 alarm relay L2
• Output relays with resistive 5A-250Vac
contacts on N.O contact.
• Output relays with resistive 3A-250Vac
contacts on N.C contact.
TESTS AND PERFORMANCES
• Assembling in accordance with CE
rules
• Protection against electrical noises
CEI-EN50081-2/50082-2
• Dielectric strength 2500 Vac for 1 min-
ute between output relays and sensors,
relays and supply, supply and sensors
• Accuracy ±5°C
• Ambient operating temperature from
-20°C to +80°C
• Humidity 90% no condensing
• Pressure die-cast housing by aluminium
alloy UNI5076
• Frontal panel IP54
• Absorption 3VA max.
• Data storage 10 years minimum
• Digital linearity of sensor signal
• Self-diagnostic circuit
• Option protection treatment of the elec-
tronic part
DISPLAYING AND DATA MANAGEMENT
• 17 leds to display the temperature
• 3 leds to show the scanned channel
• 3 leds to display the state of the alarms
of the scanned channel
• Temperature monitoring from 50°C to
200°C by 5°C steps
• 2 alarm thresholds (L1 and L2) for
channels 1-2-3
• Sensors diagnostic (Fcc-Foc)
• Data storage diagnostic
• Programming access through front key
• Automatic exit from programming cycle
after 1 minute of no-operation
• Wrong programming automatic display
2) MOUNTING
Make 4 holes on the fixing surface as shown in the “FIXING TEMPLATE” at page 2.
3) SUPPLY
T1168 monitoring unit must be fed just with 230 VAC. To terminal 41 must always be con-
nected the ground. When the monitoring unit is directly fed by the secondary winding of
the transformer to be protected, it can be damaged by high-intensity overvoltages.
These problems occur if the main switch is connected without load.
Above mentioned problems are much more evident when the 230 VAC voltage is directly
taken from the transformer secondary winding bars and there is a fixed capacitor battery
to phase the transformer itself.
REMARK: In case of unit replacement, to grant the correct and safe operating you
must replace the sensors, relays, and power supply connecting terminals with the
new terminals provided with the unit: this only if the terminal blocks are of different
brand.
To protect the monitoring unit from line overvoltages, we suggest to use the PT-73
-220 electronic discharger, designed by TECSYSTEM S.r.l. for this specific
purpose.

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Channel CH2 must always be referred to the transformer central column.
If there are 3-wire PT100 sensors, we suggest to connect in common the 2 red conductors.
8) PROGRAMMED DATA DIAGNOSTIC
In case of breaking of the internal storage or corruption of the programmed data, just after
switching ON all the leds are blinking with the relevant reporting of the Fault contact.
In this case, for safety reasons, the default parameters Alarm Ch1-2-3= 90°C, Trip Ch1-2-
3= 120°C are automatically loaded.
To remove the fault condition, press RESET and run programming to insert once again the
desired values.
Finally turn off and turn on again the unit to verify the correct memory working; in case it is
damaged and the fault signallings still appears, please return the monitoring unit to Tecsys-
tem for repair.
9) TEMPERATURE DIAGNOSTIC
If one of the temperature sensor detects a temperature higher than 1°C compared to set L1
value, after approximately 5 seconds L1 relay switches together with the turning on of LED
L1 of the reference channel.
When the L2 temperature limit is passed, L2 relay switches together with the turning on of
LED L2 of the reference channel.
When the taken temperature returns to equal or lower values than the set limits, relays re-
turn in a no-alert condition with consequent turning off of relevant LED’s.
4) FLAT CABLE FOR CONNECTION WITH THE FRONT PANEL
T1168 monitoring unit has a flat cable connection to connect the motherboard with the front
panel mounted on the cover. It is possible to remove the flat cable to make easier the
mounting or maintenance operations; for relevant connections please follow the instructions
in the figure 1.
5) WORKING OF ALARM RELAY 1 (L1)
L1 relay normally works when the monitoring unit is fed and therefore the N.O. contact is
closed. When the loaded L1 alarm threshold is reached or when there is a damage in the
monitoring unit itself, the relay de-energizes with the consequent closure of N.C contact.
Besides, L1 relay shares the FAULT Pt100 sensor function; intervention of this relay, to-
gether with the BLINKING of Pt100 sensor FAULT LED, shows an error in the reading of a
Pt100 sensor as follows:
1) Open sensor (FOC): all the LED’s on the temperature scale are ON and the FAULT
LED is blinking.
2) Short-circuited sensor (FCC): the first led on the temperature scale (50 °C) is ON
and the FAULT LED is blinking.
To restore the Fault switching, it is necessary to verify the Pt100 connections and eventu-
ally replace the faulty sensor.
6) WORKING OF ALARM RELAY 2 (L2)
L2 relay is normally de-energized and therefore N.O contact is open. When the loaded L2
alarm threshold is reached, it energizes and therefore the N.O. contact gets closed.
7) TEMPERATURE SENSOR CONNECTION
Each temperature sensor Pt100 has a white and a red wire.
Figure. 2 shows the position inside the terminal box of monitoring unit connection cable.

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13) IMPORTANT NOTICE
Before carrying out the insulation test on the switchboard where the monitoring
unit is mounted, you have to disconnect it form the mains in order to avoid serious
damages.
Keyboard
14) FRONT PANEL
LED
10) DISPLAY MODE
The monitoring unit displays, in scanning way, (every 2 seconds) the temperature of all the
channels (Ch1, Ch2, Ch3)
11) WORKING PROGRAM CONTROL
To check the programmed temperature values, shortly press PRG key to enter the program
display mode.
By repeatedly pressing PRG key, previously loaded L1 and L2 values are rolled in se-
quence.
After 1 minute keyboard no-operation, the programming display procedure will be auto-
matically left.
To end the display programming, press ENT key.
12) LAMP TEST
When the device is turned on, a 2-second test of all LED’s is automatically carried out.

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16) RULES FOR WARRANTY
The Product purchased is covered by manufacturer's warranty or the seller's terms and
conditions set forth in the "General Conditions of Sale Tecsystem srl", available at
www.tecsystem.it and / or purchase agreement.
The warranty is considered valid only when the product will be damaged by causes attri-
butable to TECSYSTEM srl, such as manufacturing or components defects.
The warranty is invalid if the Product proves tampered / modified, incorrectly connected,
because voltages outside the limits, non-compliance with the technical data for use and
assembly, as described in this instruction manual.
Any action about warranty is always at our factory in Corsico-MI, Italy as stated by the
" General Conditions of Sale Tecsystem srl ".
RAEE: This SYMBOL, shown on the unit, indicates that the waste must be subject to
"separate collection”. The end-user must send the unit to the “waste collection cen-
ters”, or return the unit to the dealer against the purchase of a new equivalent device
N° PRESS EFFECT NOTES
1 PRG Keep pressed PRG key until PRG led turns
on. L1 threshold for CH 1-2-3 is displayed on
the led bar.
2 Load desired threshold From 50 to 200°C
3 PRG L2 threshold per CH 1-2-3 is displayed on the
led bar.
4 Load desired threshold
From 50 to 200°C.
Note: L2 must be
higher than L1
5 PRG Pressing once again PRG
you return to step 1
6 ENT Loaded data storage and programming exit
If L1-L2-FLT are blinking
L2<L1
(Programming error).
Press PRG and
repeat from step 1.
After 1 minute of keyboard no-operation,
programming is left without data storage.
15) PROGRAMMING
NOTE: LED PRG-ON OFF: PROGRAM DISPLAY.
LED PRG-ON ON: PROGRAM MODIFICATION

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ELECTRICAL CONNECTIONS T1168
FIGURE 2
FAULT DIAGNOSTIC CAUSES AND REMEDIES
Monitoring unit doesn’t turn on, even if the termi-
nals are fed.
Unplug the unit from the mains.
Connector not well placet inside its seat.
Connection cables are not tightened in the terminal.
Burnt out feeder.
Plug once again the unit into the mains.
One of the three channels is in FAULT for FOC/
FCC
Check Pt100 sensor connections. Possible defec-
tive sensor.
Replace the damaged sensor.
When turning on, all the LED’s are blinking
A strong disturbance has damaged the stored data.
Please refer to paragraph 7.
If this problem should persist, please contact TEC-
SYSTEM S.r.l. Technical Department
Temperature indicated by one or more channels
is wrong. Contact TECSYSTEM S.r.l. Technical Department
Sudden trip of main switch. Temperature is on
standard levels. Just a channel has caused the
trip.
Verify that the terminal box screws are correctly
tightened.
Replace the sensor.
State of relays with turned off monitoring unit

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NOTES: