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TECSYSTEM T2612 Instruction Manual

T2612-B\ T2612-C\ T2612-AD

Made by: TECSYSTEM
Type: Instruction Manual
Category: Temperature Controller
Pages: 16
Size: 0.29 MB

 

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http://www.tecsystem.it 

T2612 

T2612-B 
T2612-C 

T2612-AD 

INSTRUCTION MANUAL 

TECSYSTEM S.r.l. 

20094 Corsico (MI) 

Tel.: +39-024581861 

Fax: +39-0248600783 

T2612 UNI 

TECSYSTEM  S.r.l ® 

R. 1.3 07/09/12 


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2

 

T2612 UNI 

TECSYSTEM  S.r.l ® 

POWER SUPPLY 
 

• 

Rated voltage 120 or 240 Vac 50/60 Hz 

• 

Selection through voltage jumper 

• 

Tolerance +/- 10% 

• 

Power input protected by 500 mA fast 
fuse 

 

COMMUNICATION: 
ONLY FOR T2612 AND T2612AD 
 

• 

Standard serial output RS485 Modbus® 
RTU  

 

ANALOGUE OUT: 
ONLY FOR T2612C AND T2612AD 

• 

1 output 4-20 mA ref. 0-240°C  

INPUTS 
 

• 

4 inputs RTD Pt100 sensors - 3 wires 

• 

4th additional input (selectable) 

• 

Removable rear terminals 

• 

Input channels protected against electri-
cal and magnetic noises and spikes 

• 

Sensors length cables compensation up 
to 500 m (1mm²)

 

OUTPUTS 
 

• 

2 alarm relays (ALARM-TRIP) 

• 

Output contacts capacity of ALARM, TRIP, 
FAULT relays: 5A 220Vac cos

φ

=1  

• 

Fan 1 and Fan 2 outputs protected by sepa-
rate 10A slow fuses (max 16A) 

• 

Output contacts capacity of FAN relays: 20A 
220Vac cos

φ

=1 

TEST AND PERFORMANCES 
 

• 

Assembling in accordance with CE rules 

• 

Protection against electrical and mag-
netic noises CEI-EN61000-4-4 

• 

Dielectric strength: 2500 Vac for 1    min-
ute from relays to sensors, relays to 
power supply, power supply to sensors 

• 

Accuracy: ± 1% full scale, ± 1 digit 

• 

Ambient operating temperature: -20°C to 
60°C 

• 

Humidity: 90% non-condensing 

• 

Housing: painted steel panel, frontal part 
in polycarbonate IP65 

• 

Burden 7VA 

• 

Data storage 10 years minimum 

• 

Digital linearity of sensors signal 

• 

Self-diagnostic circuit 

• 

Program and reading resolution: 1 digit 

• 

Opt

. Protection treatment of electronic 

part

 

DISPLAYING AND DATA MANAGEMENT 

• 

1 display 20.5 mm high with 3 digits for dis-
playing  temperatures 

• 

LED for displaying reference channel 

• 

LED’s indicating alarm or trip channel 

• 

LED indicating FAULT 

• 

Temperature monitoring from 0°C to 240 °C 

• 

2 alarm thresholds for channels 1-2-3 

• 

2 alarm thresholds for channel 4 

• 

2 alarm ON-OFF thresholds for fan control  

• 

Manually operated fans 

• 

Sensors diagnostic (Fcc-Foc-Fcd) 

• 

Entering the programming by frontal push 
button 

• 

Automatic stop of programming cycle after 1 
minute of no operation 

• 

Wrong programming automatic display 

• 

Possibility of setting automatic channel 
scanning, hottest channel, manual scanning 

• 

Maximum temperatures and alarms storage 

• 

Frontal alarm reset key 

• 

Possibility of setting HOLD function for out-
put relays 

DIMENSIONS 

 

• 

Frontal panel: 320mm x 210mm 

• 

Depth 90mm 

 

1) TECHNICAL SPECIFICATIONS 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

2) MOUNTING 

 
Make a hole with the dimensions of  155 x 280 mm (See cut-out diagram at page 13) 
 

3) POWER SUPPLY 

 

Select the power voltage (120 or 240 VAC) through the “Voltage change” jumper. 
 

 

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. 

 

4) ALARMS AND FAN CONTROL ELECTRICAL CONNECTIONS 
 

Take the removable terminal board off the unit before wiring. 

ALARM

 and 

TRIP 

relays energize only when the prefixed temperature limits are reached. 

The 

FAULT

 relay always energizes when the apparatus is powered and it resets when the 

Pt100’s are damaged or when there is no power voltage. 
The 

FAN

 relays can be used for fan control or else they can be included in the conditioning 

circuit of the transformer box. 
 

5) THERMOMETRIC SENSORS CONNECTION 

 

Each Pt100 sensor has three conductors : one white and two red (CEI 75.8) 
Fig.1 shows the disposition in the terminal board of the connection cables to the unit. 
Channel 2 must be always referred to the central column of the transformer. 
Channel 4 must be always referred to the ambient Pt100 sensor, if you want to monitor the 
temperature of the transformer box through the T2612 unit.

 

 

6) PT100 EXTENSION CABLE: TECHNICAL SPECIFICATIONS 

 
Cable 20xAWG 20/19 Cu/Sn 
Section 0.55 mm² 
Flame retardant Insulation PVC105 
In accordance with CEI 20.35 IEC 332.1 
Max working temperature: 90°C 
Conformation  : 4 terns of twisted and coloured conductors 
Shield Cu/Sn 
PVC flame retardant protection covering 
External diameter 12.0 mm 
Skeins of 100 m 
 
 

 

 
 
 

 

In order to protect the electronic apparatus, we recommend the application of the 
insulation transformer 240VAC/240VAC or 120VAC/120VAC. 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

7) MEASURE SIGNALS TRANSPORT 

 
All the transport cables of the Pt100 measure signals must absolutely: 
 

• 

be divided from the power ones 

• 

be realized with shielded cable with twisted conductors 

• 

have a section of min 0.5 mm² 

• 

be twisted if you have no shield 

• 

be firmly fixed in the terminal board 

• 

have tinned or silvered conductors 

 
All the “T” series units have the sensors linearization with a max error of 1% v.f.s.. 
 

 

8) THERMOMETRIC SENSORS DIAGNOSTIC 

 
In the event one of the thermometric sensors installed on the machine to protect is dam-
aged, the 

FAULT

 relay energizes immediately, the 

ALARM

 and 

TRIP

 LED’s of the dam-

aged channel lighten and the 

FAULT

 LED is lightening. 

The screen will automatically display a message showing the fault condition: 
 

• 

Fcc

 sensor is short circuited 

• 

Foc

 sensor is open 

 

 

9) FCD FUNCTION -  DEFECTIVE SENSORS 

 
During the unit normal operation, if the 

Fcd-YES

 function has been selected, the display will 

show 

Fcd

 indicating that a sensor is damaged and the LED corresponding to the affected 

channel will lighten. 
The 

FAULT

 relay will energize giving a signal to the operator.  

After the replacement of the damaged sensor, you can reset the alarm pushing 

RESET 

until 

the display shows the message 

rSt

 

10) TEMPERATURES DIAGNOSTIC 

 
When one of the thermometric sensors surveys a temperature exceeding by 1°C the alarm 
limit, after 4 seconds the 

ALARM

 relay will energize and the 

ALARM

 LED of the affected 

channel  will switch on. 
The same occurs when the 

TRIP

 temperature limit is detected: the 

TRIP

 relay energizes 

and the 

TRIP

 LED corresponding to the affected channel is lightening. 

When the surveyed temperature declines of 1°C below the prefixed limit for the 

ALARM

 and 

TRIP

 switching , the relays de-energize and the respective LED’s switch off.

 

TECSYSTEM srl has realised a special cable for the measure signal transport 
with all the protection requirements according  to CEI Norms: mod. CT-ES

 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

11) COOLING-FAN CONTROL 

 
The T2612 unit, if suitably programmed, can control the ON/OFF of the transformer fans 
according to the set temperature values.  
The fans of the machine can be controlled in two different ways: 
 

• 

using the temperatures surveyed by the sensors on the three columns 

 

CHF

 1 2 3 - CH4 excluded 

    

ALARM

 and 

TRIP 

LED 1.2.3 illuminated (e.g. F1: ON at 80°C - OFF at 70°C) 

                                                                  (e.g. F2: ON at 90°C - OFF at 79°C) 

 

• 

by an additional sensor (

CH4-YES

) for the ambient temperature inside the transformer 

box. 

CHF 4 
ALARM 

TRIP

  LED Ch4 illuminated (e.g. F1: ON at 40°C - OFF at 30°C) 

                                                              (e.g. F2: ON at 45°C - OFF at 35°C) 

Press

 

 

and

 

 

key to select this function.

 

 
It is possible to operate the fans manually by pushing the 

AUTO/ON 

key. 

 

12) FAN TEST 
 

It is possible, through programming (

HFn

), to lay down that fans are activated for 5 minutes 

each “

xxx

” hours, regardless of column or room temperature values (ex.: with HFn=001 fans 

are  activated for 5 minutes each hour; 

Maximum value: 240).

 

This function has the aim to periodically verify the working of the fans and their control ap-
paratus during long idle periods. 
Loading 

000

 value, this function is inhibited. 

 
13) HOLD FUNCTION 
 

To select the hold function choose the program option 

HLD-Yes

. With hold function en-

abled, when temperature exceeds the alarm set point value, the alarm relays will energize 
and the alarm LED’s will illuminate until you reset the relay contacts in manual reset mode. 
Reset is only possible when temperature falls below the set point value. To exclude the hold 
function select the program option 

HLD-no

 
14) DISPLAY MODE 
 

By pressing 

DISPLAY MODE 

you can select one of the three display modes: 

 

• 

HOT    

: the display shows automatically the temperature of the hottest channel

 

• 

MAN   

: each channel may be viewed manually by pressing the 

 or 

 key.

 

• 

T.MAX

: the unit shows the max. temperature recorded by the sensors and any alarm 

        

 

 

recorded   after the last reset. To check the channels press 

 or 

 key.

 

• 

SCAN 

:  channels cyclically change every 2 seconds

 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

15) WORKING PROGRAM CONTROL 

 
To review the entered values momentarily press PRG key, “

viS

” appears and continue to do 

so advancing to each programmed value. Press ENT to return to normal operating mode. 
 

16) LAMP TEST 

 
It is advisable to carry out this test on a regular basis to ensure all lamps are functioning 
normally. Pressing the TEST key at any time allows the user to test all lamps, initially all 
LED’s illuminate. 

 

17) ALARM  RELAYS TEST 

 
All relays may be tested using the following procedure. 
Press and hold the TEST key for 5 seconds, changing to the main screen display 

tSt 

appear. 

Release the test key when the yellow relay test LED TEST ON illuminates. 
The first relay to test will be indicated with the LED flashing. 
The relays to test are the following, in sequence: 
 

• 

“Flt”

  : RTD fault relay 

• 

“Fan 1”

 : 1st cooling relay 

• 

“Fan 2”

 : 2nd cooling relay 

• 

“Alr”

  : alarm relay 

• 

“trP”

  : trip relay

 

 
Use the Scroll 

 or 

 keys to make the selection. Press the SET key to perform the test on 

the selected relay. To reset press the RESET key and will appear ON and OFF on display. 
To discontinue operation and revert to normal operation, press the TEST key. 
At the start of the test, a timer is automatically initiated which reverts the unit to normal 
operation if no inputs are detected for a period of five minutes. 
 

18) ALARM  RELAY EXCLUSION 

 
If you want to exclude the ALARM signal press RESET key: relay de-energises itself and  
LED ALARM, which was fixed, will start to blink. If the transformer temperature goes up to 
TRIP temperature - 5°C, the relay ALARM  
Exclusion system is automatically disconnected when the temperature goes under the  
ALARM threshold. 
 

19) BUZZER 
 

T2612 unit includes a buzzer that is operating when any alarm status occurs, except for Fan 
1 and Fan 2 outputs  
By pushing the TEST/MUTE key you can stop the buzzer.

 

If any lamp is not functioning the unit must be returned for repair.

 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

N° 

KEYS 

EFFECT 

NOTES 

1

 

PRG/SET

 

Keep pressed PRG key until PRG-ON led turns on. 

After PRG indication, 

it appears ALARM threshold for CH U-V-W 

Program LED will light

 

2

 

 

Enter the desired Alarm setpoint

 

 

3

 

PRG/SET

 

TRIP set T° appears

 

 

4

 

 

Enter the desired Trip setpoint

 

 

5

 

PRG/SET

 

Led CH 4 blinks

 

Enabling CH 4 

6

 

 

Load  YES or NO 

YES: CH 4 connected 

NO: CH 4 disconnected 

11

 

PRG/SET

 

Led Fan blinks and channel leds  

o which fan is referred turn on  

 

12

 

 

Select  NO, CH U-V-W or CH 4 (if CH 4 YES) 

NO: disabled fan,  
Goes to point  21 

13

 

PRG/SET 

Display shows ON 

 FAN1 turning on  

14

 

PRG/SET 

It appears ON threshold for FAN1 

 

15

 

 

Load desired threshold 

 

16

 

PRG/SET 

Display shows OFF 

 FAN1 turning off 

17 

PRG/SET 

It appears OFF threshold for FAN1 

 

18 

 

Load desired threshold 

 

to set up FAN2 repeat the same procedure as FAN1

 

19 

PRG/SET 

Display shows HFn 

Fan cyclic test for 5 minutes each 

“n” hours 

20 

 

Load desired number of hours 

000= disabled function 

21 

PRG/SET 

Fcd

 appears on display

 

 

22 

 

Enter  

Fcd

 

YES

 or 

NO 

Fcd YES= control of damaged 

Pt100 connected

 

23 

PRG/SET 

 

Hld

 appears on  display

 

HLd YES = HOLD feature enabled

 

24 

 

Enter 

HLd YES

 or 

NO 

 

25 

PRG/SET 

PRG appears on display 

Prg NO= program cannot be 

changed 

26 

 

set up  Prg YES or NO 

 

27 

PRG/SET 

Adr appears on display 

ONLY for T2612 and T2612-AD, 

not for T2612-B and T2612-C 

28 

 

enter the address of the unit 

 

29 

PRG/SET 

on display appears bdr 

 

30 

 

enter the desired  Baud rate 

Possible Baud rates: 

2.4k-4.8K-9.6K-19.2K 

(8 bit, Stop=1 cannot be changed) 

31 

PRG/SET 

Par appears on display 

Parity bit setting 

32 

 

enter the desired  Parity bit 

No= not parity bit 

Odd= Odd parity bit 

Eve= Even parity bit 

33 

PRG/SET 

Display shows E

ND

 

Programming end  

34 

ENT 

Loaded data storage and programming exit  

Err: wrong programming for   

values indicated by leds (note 2) 

35 

ENT 

PRG/SET 

Programming is completed. 

Press ENT to return to normal operating mode

 

The unit will perform 

the light test

 

PRG/SET 

CH4 Alarm setpoint appears 

 

 

Enter the desired Alarm setpoint 

 

PRG/SET 

CH4 Trip setpoint appears 

 

10 

 

Enter the desired Trip setpoint 

 

20) PROGRAMMING 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

21) PROGRAMMING REHABILITATION IN CASE OF BLOCK (Prg no) 

 
In the event program access is blocked the display will show SET and then display “

noP

”. 

To gain access, press the ENT key and return to normal operation. Touch the PRG key and 
then, press and hold  the TEST key for approximately 7 seconds until the flashing PRG 
screen display ends. 
NOTE: this procedure removes the lockout feature. To block access again, this feature must 
be reprogrammed. 
 

22) RULES FOR WARRANTY  

 

The Product purchased is covered by manufacturer's warranty or the seller's terms and con-
ditions 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 attribu-
table 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 as-
sembly, 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 centers”, 
or return the unit to the dealer against the purchase of a new equivalent device.

 

 

 

23) IMPORTANT NOTICE  

 
Before conducting the insulation test, disconnect the power supply to the unit to avoid dam-
age. 
 

24) 4-20 mA OUTPUT CONNECTION (ONLY FOR MODEL T2612C AND T2612AD)

 

 
To 4-20 mA output can be connected a read-out or acquisition device. 
The admitted load impedance for each output goes 

from 0 to 500 ohm

.

 

 

4-20 mA signal is referred to 0-240°C range with accuracy of 1% with respect to full scale  
value. 
 
For 0-240 range, the relation current/temperature is the following: 
 
I

out

= (T/15)+4 

   (T= temperature in °C) 

 

PROGRAMMED DATA DIAGNOSTIC 

 
In case of breaking of the internal storage or corruption of programmed data,  just after 
switching on it appears 

Ech 

indication 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= 119°C, Ch4= NO, Ch-Fan= 1-2-3, Fan-on= 70°, Fan-off= 60°, HFn= 000 are automati-
cally reloaded. 
  
Eliminate 

Ech 

indication by pressing 

RESET

 and run programming to insert desired values. 

Finally turn off and turn on again the unit to verify the correct memory working; in case it is 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

TROUBLESHOOTING 

PROBLEMS 

CAUSES / 

SOLUTIONS

 

The unit will not switch on, 
with control power energized. 

Check the terminal block for correct instal-
lation.                                            

Check for voltage at the terminal block. 

Channel 4 is indicating fault and displaying 

FOC

Only three Pt100 sensors are connected.

 

Wrong programming of the  unit. 

Repeat programming.

 

One of the 4 channels is indicating fault 
and displaying 

FOC/FCC 

Check the sensors connection. 
Look for damaged sensors. 

Replace damaged sensor.

 

When switching the unit on-off, the alarm 
and trip relays energize.

 

Strong electrical noise is being picked up 
on the power line. 
Check to ensure the shield of the sensor 
cable is connected to the panel ground. 

Install shielded cable (Mod. CT-ES) or 
twist the sensor conductors.

 

All the sensors are displaying 

FCC

.

 

Wrong wiring connections.  

The terminal block is upside-down. 

The temperature indicated by one or more 
channels is wrong.

 

The sensors are defective. 

Check the sensor resistance with an Ohm-
meter. 

The unit is calibrated incorrectly. 

Return for repair. 

Sudden activation of the trip relay with 
normal operating temperature. 
One channel caused the occurrence.

 

Sensor defective (

Fcd

). 

Replace the sensor.

 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

25) MODBUS RS485 INTRODUCTION  (ONLY FOR MODEL T2612 AND T2612AD) 

 
The T2612 implements a sub-whole of the standard serial communication protocol Modicon 
Modbus RTU. The Modbus T2612 employs a RS485 connection with 2 twisted-pair wire 
hardware; with this mode it is allowed to connect up to 32 monitoring units on the same 
wiring. The T2612 is always in slave mode. 
 

26) ELECTRICAL CONNECTION 

  
The twisted-pair wiring that connects all the units with RS485 needs 120 ohm terminal resis-
tors on the opposite side of the master. To enable the terminal resistor connect the “END” 
terminal with the “TX” terminal (-) on the “serial output” terminal board. 
 

Important Note : the twisted-pair wires must be connected according to the polarity; 
then, all the (+) with the (+) and all the (-) with the (-). 

 

As far as the signal cable to be used to guarantee a correct working of the network is con-
cerned, we suggest to follow what is provided for by EIA RS485 standard which advises the 
use of a 24AWG loop. 

 

In order not to affect the line impedance, connect the loop keeping into consideration the 
polarities and lay the network avoiding to create sharp bends or ring windings. 
In case of necessity, it is also available the GND dead ground terminal. 
 

27) DATA FRAME 
 

The asynchronous transmission frame is made of 1 bit of START, 8 bit Data, 1 bit of parity  
(if enabled)  and 1 bit of Stop. 
The allowed Baud rates are: 2400, 4800, 9600 and 19200; the addresses are from 0 to 32   
(0 for non-connected).  
The DATA are “16bit” length where no specified.   
 

28) DATA PACKET 
 

A complete question/answer sequence is as follows : 
 
Question from the master : 
 
SLAVE ADDRESS   

- 1byte 

FUNCTION CODE   

- 1byte 

DATA 

 

 

- variable, it depends on the function code 

CRC 

  - 

bytes 

 
Answer from slave : 
 
SLAVE ADDRESS   

- 1byte 

FUNCTION CODE   

- 1byte 

DATA 

 

 

- variable, it depends on the function code 

CRC 

  - 

bytes

 

 
 

 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

29) FUNCTION CODE 

 

 

READING DATA OF SET POINT AND TEMPERATURE REGISTERS: CODE 3

(10) 

 

Question : 

Slave addr, 3

(10)

 ,Starting address Hi, Starting address Lo, Number of points Hi, Number of 

points Lo 
CRC-Hi, CRC-Lo 
 

Answer: 

Slave addr, 3

(10)

 , Byte count, Data Hi, Data Lo... , CRC-Hi, CRC-Lo 

 

EXCEPTION CODE: 

 
Exception responses 
In case of wrong questions, the T2612 answers with modified codes and codified errors ac-
cording to the following: 
 
Packet of error answer : 
Slave address, Function code (+bit 7 to 1), Exception code, CRC-Hi, CRC-Lo 
 

- Function code not present 

- Wrong data address 

   - Wrong data (i.e. length) 

 

WRITING DATA : CODE 16

(10) 

 

Writing questions: 

Slave addr, 16

(10)

 ,Starting address Hi, Starting address Lo, Number of registers Hi, Number 

of registers Lo, 
Byte count, Data Hi, Data Lo, ..... , CRC Hi, CRC Lo 

 

Writing answer: 

Slave addr, 16

(10)

 ,Starting address Hi, Starting address Lo, Number of registers Hi, Number 

of registers Lo, 
CRC-Hi, CRC-Lo 
 

30) HOLDING REGISTER AND INPUT REGISTER ADDRESSES (in decimals): 

 

Addr.

 (10)

 

Hi-Lo DataHi 

DataLo 

--------------------------------------- 

00-00 00

 

ALARM SET POINT          |>Absolute data from 0-240

(10)

=0-240°C 

00-01 00

 

TRIP SET POINT            |> 

00-02 00

 

ALARM CH4 SET POINT  |> 

00-03 00

 

TRIP CH4 SET POINT      |> 

00-04 00

 

FAN ON SET POINT         |> 

00-05 00

 

FAN OFF SET POINT       |> 

00-06 00

 

FAN2 ON SET POINT       |>

 

00-07 00

 

FAN2 OFF SET POINT     |> 

                                       

 


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T2612 UNI 

TECSYSTEM  S.r.l ® 

---------------------------------------- 

00-08 00

 

TEMP CH1  

   

|>  Temp. with offset 10

(10)

 (range 0-240) 

|>     11=1°C, 10=0°C, 9=-1°C,etc. 

00-09 00

 

TEMP CH2  

   

|> 

00-10 00

 

TEMP CH3 

   

|>  

Temp. with offset 50

(10)

 (range -40/+200)

 

     |> 

 

 

51=1°C, 

50=0°C, 

49=-1°C,etc. 

 

     |> 

Special 

values 

for 

error 

Pt100: 

 

00-11 00

 

TEMP CH4  

   

|>            (see the instruction T935)               

00-12 00

 

TEMP. MAX CH1   

|>           0

(10)

 = Fcc 

00-13 00

 

TEMP. MAX CH2   

|> 

1

(10)

 = Foc 

00-14 00

 

TEMP. MAX CH3   

|> 

2

(10)

 = Fcd 

00-15 00

 

TEMP. MAX CH4   

|> 

----------------------------------------- 

00-16 00

 

H.FAN (max cycling interval for test fan operation) 

00-17 00

 

RL-STATUS : relays (1=ON): bit 0 -> Alarm, 1 -> Trip, 2 -> Fault,                            

 

 

 

      3 -> Fan1, 4 -> Fan2 

00-18 00

 

Status prog. : 

bit 0-> Fan Y/n, bit 1-> Fan2 Y/n, bit 2-> Ch4 Y/n,  

 

 

 

 

bit 3-> Fan CH4, bit 4-> Hold Y/n, bit 5-> Fcd Y/n,         

    bit 

6->Prg 

Lock 

Y/n 

00-19    00       

Alarm memory : 

  
bit   7 

    6 

  5 

  4 

  3 

  2 

  1 

  0 

 
    CH4    CH3 

CH2 

 CH1 

CH4 

CH3 

 CH2 

 CH1 

   

------TRIP-------        ------ALARM------

 

 

31) CRC CALCULATION 

 

This protocol includes 2 byte CRC-16 in all the transmission. The typical polynomial 
(11000000000000101B) is used for the calculation and the result is “hanged up” at the end 
of the packet. The polynomial is used in reverse order with the more significant bit elimi-
nated because  useless for the calculation. 

 

32) PARAMETERS DESCRIPTION 

 

A - 16bit register 
AL - A lower part 
AH - A upper part 
i,j, - COUNTERS 
(+) - EXCLUSIVE OR 
Di - frame datum (thousandth) of the packet 
N - byte number of the packet, excluded the 2 of CRC 
G - Polynomial : 1010-0000-0000-0001 
shr - shift to the right 

 

33) ALGORITHM 

 

1)   0xFFFF -> A 
2)   0 -> i 
3)   0 -> j 
4)   Di (+) AL -> AL  
5)   j +1 -> j 
6)   shr A 
7)   if carry then G (+) A -> A 
8)   if NOT j=8 then go to 5 
9)   i +1 -> i 
10)  if NOT i = N then go to 3 
11) A -> in CRC (the result is in the L,H) 

 


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13

 

T2612 UNI 

TECSYSTEM  S.r.l ® 

CUTOUT  

GALVANIZED SHEET IRON

Thickness 1.2 mm

FRONT VIEW

Cut out: 155 X 280 mm

Sc

re

w r

ivet

 M

3

 x 15m

m

Screw rivet

M3 x 15mm

Screw rivet

M3 x 15mm

190 mm

210 mm

15

0 m

m

15

0 m

m

32

0 m

m

Screw rivet

M3 x 15mm

Screw rivet

M3 x 15mm

S

cr

ew

 r

ive

t M

3 x

 15

mm


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14

 

T2612 UNI 

TECSYSTEM  S.r.l ® 

T2612 REAR CONNECTIONS 

CH4 

CH3 

CH2 

CH1 

 


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15

 

T2612 UNI 

TECSYSTEM  S.r.l ® 

T2612 FRONT PANEL 


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16

 

T2612 UNI 

TECSYSTEM  S.r.l ® 

NOTES: