TECSYSTEM NT538 WS, NT935 WS Instruction Manual

Download

Page 1

1MN0158 REV. 0

operates with ISO9001 certified quality system

http://www.tecsystem.it

R. 1.0 10/09/2018

“Translations of the original instructions”

ENGLISH

TECSYSTEM S.r.l. 20094 Corsico (MI)

Tel.: +39-024581861

Fax: +39-0248600783

NT538 WS

INSTRUCTION MANUAL

Page 2

NT538 WS

PAGE

1) SAFETY REQUIREMENTS

………..........................................

2) ACCESSORIES

…………………………………..

3) TECHNICAL SPECIFICATIONS

…………………………………..

4) FRONT PANEL

…………………………………..

 DISPLAY

…………………………………..

 OPERATING PROGRAM CONTROL

………………………………….

—

 NOTES ON SCAN AND MAN FUNCTIONS

…………………………………..

—

 LED TEST

…………………………………..

—

 ALARM RELAY TEST

…………………………………..

—

 ALARM RELAY SILENCING

…………………………………..

—

5) MOUNTING

…………………………………..

6) ELECTRICAL CONNECTIONS

…………………………………..

 NT538 WS BACK

…………………………………..

—

 POWER SUPPLY

…………………………………..

 ALARMS AND VENTILATION

…………………………………..

—

 FAULT AND RESET MESSAGE SEQUENCE

…………………………………..

—

7) PROGRAMMING

…………………………………..

 NT538 WS

…………………………………..

—

 PROGRAMMING NOTES

…………………………………..

 TEMPERATURE SENSORS

…………………………………..

 MEASUREMENT SIGNAL TRANSFER

…………………………………..

—

 TEMPERATURE SENSOR DIAGNOSTICS

…………………………………..

 VOTING FUNCTION

…………………………………..

—

 PROGRAMMED DATA DIAGNOSTICS

…………………………………..

 TEMPERATURE DIAGNOSTICS

…………………………………..

—

 COOLING FAN CONTROL

…………………………………..

—

 FAN TEST

…………………………………..

—

CONTENTS

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 NT538 WS CONTROL UNIT

Page 3

NT538 WS

PAGE

8) FAILSAFE FUNCTION

…………………………………..

9) TECHNICAL SPECIFICATIONS OF THE EXTENSION CABLE FOR Pt100

…………………………………..

—

10) FCD FUNCTION

…………………………………..

11) NT538 WS WIFI CONNECTION

…………………………………..

—

12) TECSYSTEM WEB SERVER

…………………………………..

 WEB SERVER MANAGEMENT BAR

…………………………………..

 HOME SCREEN

…………………………………..

—

 SETTINGS SCREEN

…………………………………..

 NETWORK SETTINGS

…………………………………..

 OPTIONS

…………………………………..

 GRAPHICS SCREEN

…………………………………..

 EVENTS SCREEN

…………………………………..

 GRAPHIC VIEW NOTES

…………………………………..

 EXPORT NOTES CSV FILE

…………………………………..

—

 PIN CODE

…………………………………..

—

13) TROUBLESHOOTING

…………………………………..

14) WARRANTY CONDITIONS

…………………………………..

—

15) EQUIPMENT DISPOSAL

…………………………………..

16) USEFUL CONTACTS

…………………………………..

—

Page 4

NT538 WS

SAFETY REQUIREMENTS

ATTENTION:

Carefully read the manual before starting using the control unit. Keep the instructions for future reference.

Do not open the device, touching any internal component can result in electric shock as voltages over 50 volts can be lethal. In order to reduce the risk of electric shock, do not disassemble the back of the device. Warranty shall be void if device is opened.

Before connecting the device to the power supply, ensure that all the connections are correct. Always disconnect the unit from the supply before making any modification on the wiring.

Any operation on the equipment must be operated by a qualified technician.

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

POWER SUPPLY

The NT538 WS control unit has UNIVERSAL power supply, i.e. it can be supplied from 85 to 260 Vac-Vdc, irrespectively of polarity in Vdc. Before use, ensure that 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 clamps. Do not carry out any connecting/disconnecting operation 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 liquid spurts or drops, do not position it in places where humidity exceeds 90% and never touch it with wet or humid hands during storms. If any liquid penetrates the control unit, disconnect immediately and contact technical service.

CLEANING

Disconnect the power cable before cleaning the control unit, using a dry cloth without any solvent or detergent, and compressed air.

OBJECTS

Never insert objects into the openings of the control unit. If this happens, disconnect the control unit and contact technical service.

USE RESERVED TO QUALIFIED PERSONNEL

The purchased good is an advanced electronic device that should not be used by non-qualified personnel. Any operation must be carried out by a qualified technician.

ACCESSORIES

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

LOCATION

Install the control unit indoor, in a place protected from water splashes and sun rays. Do not place near heat sources if 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 intense magnetic fields..

REPAIRS

Do not open the control unit. In case of fault, always contact qualified personnel. The opening of the control unit and/or the removal of the series identifying label automatically make the warranty void. The warranty seal is applied to all devices, any attempt to open the unit would cause the seal to break the consequent automatic cancellation of the warranty.

FUNCTION To control the transformer correctly from a temperature point of view, enabling the VOTING function is allowed where the load distributed between the phases of the transformer is adequately balanced.

TECHNICAL INFORMATION Mail: [email protected] — tel: 02/4581861

Page 5

NT538 WS

The following objects are present inside the box:

Control unit

Start guide and QR code 2 blocks for panel mounting

1 supply terminal 3 poles pitch 5 Code: 2PL0367 - Screws tightening torque 0.5Nm

1 relay terminal 12 poles pitch 5 Code: 2PL0361 - Screw tightening torque 0.5Nm

2 Pt100 sensors terminals 12 poles pitch 3.81 Code: 2PL0430 - Screws tightening torque 0.25Nm

1 external Wi-Fi SMA Antenna

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.

Page 6

NT538 WS

TECHNICAL SPECIFICATIONS

NT538 WS

POWER SUPPLY

Supply rated values

85-260 Vac-Vdc

50/60HZ

Vdc with reversible polarities

●

INPUTS

8 inputs for RTD sensors, Pt100 type with 3 wires (max section 1.5mm²)

●

Connections on removable terminal strips

●

Input channels protected against electromagnetic interference

●

Cable compensation for thermistors

500m (1 mm²)

OUTPUTS

2 alarm relays (ALARM AND TRIP) SPDT

●

1 sensor or operating failure (FAULT) relay SPST

●

Output relays with 10A-250Vac-res COSФ=1 contacts.

●

2 ventilation management relays (FAN 1 and FAN 2) SPST

●

Wi-Fi Connection: protocol 802.11 b/g/n, frequency 2.4 GHz with removable external antenna

Max 100m

in open field

DIMENSIONS

100 x 100 mm DIN 43700 depth 150 mm (including antenna - installed at 90° - and terminal board)

Hole 92 x 92 mm

TESTS AND PERFORMANCE

Construction in compliance with CE regulations

●

Protection from electrical interference EN 61000-4-4

●

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

●

Accuracy ±1% full scale value, ±1 digit

●

Ambient operating temperature from –20°C to +60°C

●

Humidity 90% non-condensing

●

Frontal film polycarbonate IP65

●

Page 7

NT538 WS

TECHNICAL SPECIFICATIONS

NT538 WS

Housing NORYL 94 _V0

●

Absorption 7.5VA

●

Digital linearity of sensor signal

●

Self-diagnostic circuit

●

Protection treatment of the electronic part

Optional

DISPLAY AND DATA MANAGEMENT

2 x 13 mm displays with 3 digits to display temperatures, messages and channels

●

3 LEDs to display the state of the alarms of the selected channel (ALARM-TRIP-FAULT)

●

4 leds selection of display mode (SCAN-AUTO-MAN-T-MAX)

●

2 LEDs to display the state of FAN1 and FAN2

●

Temperature control from 0°C to 240°C (*)

●

1 ALARM threshold for each channel

●

1 TRIP threshold for each channel

●

2 ON-OFF thresholds ventilation FAN1 and FAN2 in common for all the enabled channels

●

Sensor diagnostics (Fcc-Foc-Fcd)

●

Data memory diagnostics (Ech)

●

Access to programming through front keyboard

●

Automatic exit from programming, display and relay test after 1 minute of inactivity

●

Incorrect programming warning

●

Selection between channels automatic scanning, hottest channel or manual scanning

●

Storage of maximum temperatures reached by channels and alarm status

●

Front key to reset the alarms

●

Voting Function

●

Fail Safe Function

●

WEB SERVER Wi-Fi Function

●

Synchronization with SERVER NTP (Network Time Protocol) in STATION mode

●

(*) On demand, available version from -40°C to 200°C with alarm temperature management range from 0°C to 200°C

Page 8

NT538 WS

3-digit temperature display

12)

Enter/Reset button

Control unit series

13)

Programming/Setting key

TRIP (red) LED

14)

Led/relay test key

ALARM (yellow) LED

15)

RS (green) LED

FAULT (red) LED

16)

3-digit channel display

FAN 1 (yellow) LED

17)

T-max mode selection (red) LED

FAN 2 (yellow) LED

18)

Man mode selection (yellow) LED

Display mode selection key

19)

Auto mode selection (green) LED

Fixing block

20)

Scan mode selection (yellow) LED

10)

UP key

21)

Fixing block

11)

DOWN key

FRONT PANEL

2 3 4 5 6 7 8

1MN0123 REV. 0

Page 9

NT538 WS

DISPLAY The first display is dedicated to temperatures.

The second display to the monitored channel.

When the device is switched on or after a reset, the model of the NT538 control unit, the type of sensors, VER "00" (firmware version), the temperature range of the device and the WS (web server) identification are always shown on the display.

Pressing the MODE key, the display modes can be set:

 SCAN: the control unit shows in scanning (every 2 seconds) all the enabled (°C) and disabled (NO) channels.

 AUTO: the control unit displays the hottest channel automatically.  MAN: manual reading of the channel temperature using the up/down keys.  T.MAX: the control unit displays the maximum temperature reached by the sensors, any situations of alarm or fault that

have occurred since the last reset. Select channels with cursors , reset the values with RESET.

OPERATING PROGRAM CONTROL

To control the protection levels programmed, press the PRG key twice to access the VIS programme. Repeatedly pressing the PRG key, you can scroll through all the previously loaded values in sequence. After 1 minute's keyboard inactivity, the programming display procedure is automatically abandoned.

To stop the display, press the ENT key.

NOTES ON SCAN AND MAN FUNCTIONS

During the SCAN and MAN modes, the operation of the NT538 can be displayed.

1) RUN cPU:

This message appears when the device is turned on.

2) Ech Err: This message appears when damage in the EEPROM memory is detected. Pressing Reset will cancel the message and restore the original default parameters, listed in the programming paragraph on pages 13-14. Return the control unit to TECSYSTEM for repairs.

3) CAL Err: This message appears when damage is found in the measurement circuit. The temperature values displayed might be incorrect. Return the control unit to TECSYSTEM for repairs.

4) Pt Err : This message appears when it is detected that one or more PT100 sensors are not working correctly, FOC, FCC and FCD indications in the temperature sensor diagnostics paragraph on page 16.

In case of Err the FAULT relay will be de-energised. The above messages will be displayed following the 1-2-3-4 priority stated.

NOTE: in any display mode in case of faulty sensor failure (fcc, foc or fcd) the control unit will automatically set up in SCAN

mode (PRIVILEGED SCAN) allowing immediate displaying of the fault condition on the relative CHn channel (the Mode

key is disabled ).

LED TEST

We suggest carrying out the control unit LED test regularly. For this operation, press the TEST key briefly; all the displays turn on for 2 seconds.

If one of the LEDS does not work, please return the control unit to TECSYSTEM for repair. ALARM RELAY TEST

This function allows you to carry out a test of the relay operation without having to use further devices. To start the test procedure, press and hold the TEST button for approximately 5 seconds: the TST indication appears for 2 seconds confirming entry into the Relays Test mode.

Press the SET and RESET keys to energise and de-energise the relay to be tested; the display will show ON-OFF. After 1 minute's keyboard inactivity, the RELAY TEST procedure will be automatically abandoned. To stop the RELAY TEST procedure, press the TEST key. Alternatively it is possible to use the PT100 model simulator: SIM PT100.

ALARM RELAY SILENCING

If you want to silence the ALARM signal press the RESET key: the relay de-energises and the ALARM LED, which was

fixed, will start flashing. Silencing is automatically disabled when the temperature goes below the ALARM threshold.

Page 10

NT538 WS

Fix the unit securely with the blocks supplied. Connect the Wi-Fi antenna only after suitably fixing the device.

Control unit

Panel hole dimensions (+0.8 mm tolerance)

Identification label

Control unit

Locking screws

Fixing blocks

Cross-head screwdrive #1X100mm

MOUNTING

1MN0007 REV. 0

2 3 4

1MN0008 REV. 0

Drill a 92 x 92 mm hole in the panel sheet.

Page 11

NT538 WS

SCREEN

RED

WHITE

ELECTRICAL CONNECTIONS

1 2 3

1MN0095 REV. 0

Output relay with 10A-250Vac-res COSФ=1 contacts.

STOP SYSTEM

INDICATION AUDIBLE AND VISUAL ALARM CONDITION

EXAMPLE Pt100 CONNECTION

Note: before connecting the sensors to the control unit, carefully read the paragraph measurement signal transfer on page 15.

Note: image relay contacts in non-alarm condition, except for the FAULT relay which opens: contacts 11-12 open (NO) contacts 11-12 closed (NC) fault condition identification. Read paragraph Alarms and Ventilation p. 12 and see image of fault contact opening.

RELAYS CONNECTION EXAMPLE

Pt100 sensors (white-red-red)

Access point key

Power supply 85-260Vac-dc 50/60Hz.

Antenna and Wi-Fi connector

Relays (FAN2-FAN1-ALARM-TRIP-FAULT)

The Wi-Fi antenna (5) is supplied with the NT538 WS device. If necessary, the antenna connection can be extended using a 5 mm SMA Male to Female antenna cable.

NOTE: Never start the device with the antenna disconnected.

1MN0158 REV. 0

Page 12

NT538 WS

POWER SUPPLY

The NT538 WS control unit has UNIVERSAL power supply, i.e. it can be supplied by 85 to 260 Vac-Vdc, 50/60 Hz 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 and Vdc supply.

The earthing cable must always be connected to terminal 41. When the control unit is powered directly by the secondary of the transformer to be protected, it can be burnt out by high

intensity overvoltages. These problems occur if the main switch is closed and the transformer does not have the load (no load test). The above is much more evident when the 220 Vac voltage is taken directly from the bars of the secondary of the transformer and there is a fixed capacitor battery for power factor correction of the transformer itself.

To protect the control unit against line overvoltages, the PT-73-220 electronic arrester, designed by TECSYSTEM S.r.l. for this specific purpose, is recommended. Alternatively, it is advisable to use 110 V AC supply voltages or, even 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.

ALARMS AND VENTILATION Carry out the electrical connections on the removable terminal blocks only after disconnecting them from the unit.

When the unit is located in one of the methods described below does not monitor heat, also the relay will all be banned: The fault contact switches and the fault LED flashes.

 Vis. Programming display.  PRG programming.  Relay test.

The ALARM and TRIP relays only switch when the set temperature thresholds are exceeded. The FAULT (fault) contact, programmed in active failsafe mode (default YES), opens (11-12) when the appliance is

powered, only if during the access phase the control unit does not detect anomalies, and keeps the switching until when one of the following events occurs:

 Data memory fault (Ech message).  Pt100 sensor fault (FCC short-circuited sensor, FOC interrupted sensor or Fcd quick temperature increase)  CAL damage to the measurement circuit.  Insufficient supply voltage.  During the power on reset after programming (PRG), displaying the data (VIS) and test relay.

The FAULT failsafe mode can be disabled FAULT failsafe "NO" see programming step 30-31 page 14. NOTE: in order to avoid unwanted system outages, do not connect the FAULT relay to the transformer tripping circuit.

FAULT AND RESET MESSAGE SEQUENCE

Find below the sequence of fault messages and RESET function condition.

1) ECH

2) CAL

3) FCD

4) ERR PT

The FAN1 and FAN2 contacts can be used to control the cooling fans, or they can be inserted in the conditioning system of the transformer room, see paragraph cooling fan control on page 17.

NOTE: always disconnect the unit before performing any electrical connections.

11 12

FAULT 11-12 NC: ALARM FAULT OR POWER OFF

FAULT 11-12 NO: POWER ON OR NO FAULT

11 12

FAULT CONTACT (failsafe active)

eeprom fault measurement circuit fault quick temp. increase fault

FCC or FOC sensor fault

erasable message erasable message resettable condition non-resettable condition

Page 13

NT538 WS

PROGRAMMING

NT538 WS

STEP

PRESS

EFFECT

PRESS

NOTES

Keep the PRG key pressed until the display shows PRG

SET

Select PRG SET for entering in the programming mode

or PRG 1 to restore the default programmed value.

PRG 1 default data

The display shows CH1

Enabling CH1

with YES the CH1 is

enabled

with NO the CH1 is

disabled

Select YES or NO

The ALARM CH1 threshold for is displayed

Set the desired threshold, the Alarm LED flashes

Default 90°C

Set the desired threshold

The TRIP threshold appears for CH1

the led Trip flashes.

Default 119°C

Set the desired threshold

The display shows CH1 FAN YES

the Fan1-2 LEDs flash.

info fan operation:

paragraph fan command

page 17

Select: YES FAN1+FAN2 enabled flashing

YES only FAN1 enabled flashing YES only FAN2 enabled flashing

NO led FAN1- FAN2 off

Default YES FAN1+FAN2

Repeat the steps listed above for all the channels

CH2-CH8.

The display shows ON the LED FAN1 flashes

Default 70°C

13 Set the desired threshold FAN1 ON

The display shows OFF

the LED FAN1 flashes

Default 60°C

Set the desired threshold FAN1 OFF

The display shows ON the LED FAN2 flashes

Default 45°C

17 Set the desired threshold FAN2 ON

The display shows OFF

the LED FAN2 flashes

Default 35°C

19 Set the desired threshold FAN2 OFF

Page 14

NT538 WS

HFN (NO) is displayed

The FAN1-FAN2 LEDs flash

Fan cyclic test

for 5 min. every “n” hours

Set the desired number of hours

Default NO = function

disabled

FCD (NO) is displayed

Fault for quick temperature

of the temperature (°C/sec)

Set the desired value

(FCD info on page 19)

Default NO

(function excluded)

VOT (NO) is displayed

(VOTING info on page 16)

Set 0-1-2-3

Default 0

(function excluded)

FLS (ALARM) is displayed

Blinking ALARM LED

(FAIL SAFE info on page 18)

Select YES or NO

Default NO

FLS (TRIP) is displayed

Blinking TRIP LED

Select YES or NO

Default NO

FLS (FAULT) is displayed

Blinking FAULT LED

Select YES or NO

Default YES

END is displayed

End of programming;

Press ENT

to save the set data

and exit programming

incorrect programming of the LED values indicated (note 6)

Return to step 1

PROGRAMMING NOTES

1) The MODE key allows reversing the programming steps according to the sequence 24-22-12-1

2) The TEST key allows exiting programming without saving the modified data.

3) After 1 minute's keyboard inactivity programming is abandoned without saving the data.

4) During programming the control unit does not control/protect the monitored machine.

5) At the end of programming the control unit is restarted and the FAULT relay is disabled until the unit is fully restarted.

6) If pressing ENT, “Err” appears, it means that one of the following mistakes has been made: ERR ALL. = ALARM ≥ TRIP (CH1-CH2-CH3-CH4-CH5-CH6-CH7-CH8)

ERR FAN = FAN-OFF ≥ FAN-ON. (FAN1 OR FAN2) The device automatically switches to the programming step of the mistake.

NOTE: EVERY TIME THE CONTROL UNIT PROGRAMMING, WITH CONFIRMATION OF DATA SAVING, THE VALUES STORED IN T-MAX ARE RESET AT THE TIME OF STORING.

ATTENTION:

We recommend you check the device's programming before starting the device. The default parameters set by TECSYSTEM might not match your requirements. Programming the device is the end user's responsibility, the settings of the alarm thresholds and the enabling of

the functions described in this manual must be checked (by a specialized engineer) according to the application and features of the system the control unit is installed on.

Page 15

NT538 WS

All "NT" series control units have linearity of the sensor signal, with a maximum error of 1% of full scale value.

TEMPERATURE SENSORS

Each Pt100 temperature sensor has a white wire and two red ones (CEI 75.8). The figure on page 11 shows the configuration on the terminal board of the connection cables to the control unit. Each channel can be

independently programmed with two alarm thresholds (alarm and trip).

MEASUREMENT SIGNAL TRANSFER

All the Pt100 measurement signal transfer cables must strictly comply with the following rules:



1. Every Pt100 must be connected with a three-wire cable with a minimum section of 0.35mm² and a maximum of 1 mm².

2. The extension cable must be screened with tinned copper braid with an 80% cover

3. Conductors must be twisted, maximum recommended step 60mm

4. The cable screening must only be earthed with a termination, preferably on the control unit side.

5. The sensors' signal transfer cable must not be near electrical cables, either low or medium-high voltage.

6. The Pt100 cable and the signal transfer cable must be laid in a straight line, without any winding.

7. Any caps used to butt conductors must be crimped properly to avoid false contacts.

NOTE: to install the sensors and signal transferring cable correctly, read the SCS/SENSORS installation rules manual.

What may happen when installation rules are not complied with.

1) The electrical field propagating from the power line of another circuit couples capacitively with the conductors (in particular with unscreened cables). The effect of this coupling creates a signal that overlaps the signal transmitted by the nearby conductors, causing incorrect readings.

2) The variations in magnetic flux in the power lines may induce an electromotive force on the signal transferring cables (in particular non-twisted cables), that, being a closed circuit, generates a current. This interference current, multiplied by the circuit resistance, gives a voltage value that overlaps the signal to be transmitted, distorting the sensor measurement.

3) False contacts can alter the signal with the consequent variation in the temperature detected. In specific cases, when the rules for connecting the Pt100 sensors are not complied with, the following anomalies can

occur between the SCS box and the temperature control unit:

a) incorrect temperature readings, alarms or anomalous tripping b) mechanical/electrical fault of the Pt100 sensors c) damage to the Pt100 inputs of the control unit.

TECSYSTEM S.r.l. has designed its own special cable to transfer the measurement signals, CEI-compliant, with all the protection requirements provided for mod. CT-ES

NOTE: the use of cables not complying with the above might cause possible reading anomalies. It is always important to take into account that any interference on the signal lines might cause anomalies on the Pt100 inputs (CH1-CH2-CH3-CH4…) or on the sensors themselves.

Page 16

NT538 WS

TEMPERATURE SENSOR DIAGNOSTICS

In case of failure or exceeded full scale value of one of the thermometric sensors installed on the machine to protect, the FAULT relay opens immediately with the relative warning of faulty sensor on the corresponding channel (PT err).

Fcc indicates sensor short-circuited or minimum full scale value of the control unit exceeded -8°C (version 0°÷240°C) and -48°C (version -40°C÷200°C)

Foc indicates sensor interrupted or maximum full scale value of the control unit exceeded 243°C (version 0°÷240°C) and 203°C (version -40°C÷200°C)

To eliminate the message and to restore the Fault opening, check the connections of the Pt100 and to replace the faulty sensor if necessary. In case the minimum/maximum full scale value has been reached, make sure that the environmental conditions correspond to what is indicated by the control unit.

Note: exceeding the minimum/maximum full scale value can also be caused by interference on the sensor lines; in this case we recommend that you check:

the correct installation of the sensors and above all of the extension cable (as stated in the paragraph MEASUREMENT SIGNAL TRANSFER) the activation of the functions: VOTING (shown below) or FCD (on page 19) must always be operated taking into account the working conditions of the system.

CAL message display: it appears when damage is found in the measurement circuit. The temperature values displayed might be incorrect. Return the control unit to TECSYSTEM for repairs.

VOTING FUNCTION

The voting function is derived from the concept of redundancy which consists of the duplication of components of a system with the intention of increasing reliability.

How the VOTING works? Taking advantage of the principle indicated we use the probes installed to monitor the operation of the electrical machine, but at the same time ensure the proper functioning of the probes themselves, discriminating any false alarms (generated by installation errors or failures).

Enabling VOTING can be done by choosing one of three modes of selection "1-2-3" the control unit performs a comparison of the temperature values measured on the channels monitored, enables switching of the tripping contact (TRIP) only if it is found the overcoming of the TRIP threshold on at least two channels in the same period T.

Selecting VOTING "NO" function will be disabled. In the tables, the selection, indicated below you will find the combination of channels with voting active available.

For greater flexibility in two combination we expected channel with voting enabled and others with voting disabled.

 Voting enabled: The contact TRIP switches only if at least two channels exceeded TRIP threshold.  Voting disabled: The contact switches when the TRIP single-channel exceeds the threshold of TRIP.

Note: The switching of ALARM signal still exceeded the threshold of alarm on each channel. To enable Voting read the programming section on pages 13-14.

Attention: To control the transformer correctly from a temperature point of view, enabling the VOTING function is allowed where the load distributed between the phases of the transformer is adequately balanced. In addition, any conditions of FAULT: FCC-FCC-FCD on two or more channels, with active voting, can determine the TRIP contact inhibition.

Selection 1

Selection 2

Selection 3

VOTING ENABLED CH1…..CH3

VOTING ENABLED CH1 …. CH6

VOTING ENABLED CH1 …. CH8

1 1 1 2 2

3 3 3

VOTING DISABLED CH4..CH8

4 5 5 5 6 6 6

VOTING DISABLED CH7..CH8

7 7 7

Page 17

NT538 WS

PROGRAMMED DATA DIAGNOSTICS

In case of failure of the internal memory or corruption of programmed data, just after switching on, Ech appears with the relevant Fault contact signal. In this case, for safety reasons, the default parameters are loaded automatically (see programming table on pages 13-14). Eliminate the Ech indication by pressing RESET and run programming to enter the desired values. Finally switch the unit off and back on to check the memory works correctly, if it is damaged Ech will be displayed again (send the control unit to TECSYSTEM srl for repairs).

TEMPERATURE DIAGNOSTICS

When one of the temperature sensors senses a temperature 1°C higher than the alarm threshold, 5 seconds later the ALARM relay switches and the ALARM LED of the affected channel (CHn) lights up. When the trip temperature limit is exceeded, , 5 seconds later the TRIP relay switches and the TRIP LED of the affected channel (CHn) lights up. As soon as the recorded temperature returns to values equal to or lower than the limit set for the ALARM and TRIP relays switching, these relays de-energise and the corresponding LEDs switch off. The ALARM and TRIP values are kept in the internal memory: they can be recalled by entering the Vis modes

(programmed parameter display) and modified in PRG (programming) mode.

COOLING FAN CONTROL

The unit NT538 WS has two contacts FAN (FAN1 and FAN2), if properly programmed, can control ON-OFF of fans for cooling system checked.

The high flexibility of the NT538 WS allows you to select, for each channel, an operation mode for contact management of FAN1 and FAN2. During the programming of the individual channel, enabled, you will be asked to select one of the following ways to activate FAN, dedicated to that channel:

 YES FAN1+ FAN2 enabled flashing The selected channel, CHn, will enable the switching of both FAN1 and FAN2 contacts in relation to the ON – OFF thresholds programmed for FAN1 and FAN2.

 YES only FAN1 enabled flashing The selected channel, CHn, will enable the switching of the FAN1 contact in relation to the ON – OFF thresholds programmed for FAN1

 YES only FAN2 enabled flashing The selected channel, CHn, will enable the switching of theFAN2 contact in relation to the ON – OFF thresholds programmed for FAN2.

 NO FAN1+ FAN2 disabled flashing The FAN function on the selected channel, CHn, is disabled. No FAN threshold is associated with the selected channel. The FAN1 thresholds: (ON - OFF) and FAN2: (ON - OFF) are common for all CHn channels enabled, programmable in

steps 12-19 of programming page 13.

FAN1: (e.g. ON at 70°C - OFF at 60°C) FAN2: (e.g. ON at 45°C - OFF at 35°C)

The values of ON and OFF can be programmed depending on the range of the device, FAN ON must always be greater by at least 1 °C since FAN OFF (recommended Δ FAN POWER ON-OFF + 10 ° C). The FAN 1 / FAN 2 LED light up when the temperature exceeds 1°C the FAN ON threshold, the corresponding relay switches, and turns off when the temperature goes below 1°C the FAN OFF threshold, the corresponding relay switches.

FAN TEST

It is possible, by programming (HFn), to make sure that the fans are operated for 5 minutes every xxx” hours, regardless of the temperature values of the columns or the environment (e.g.: with HFn = 001 the fans are activated for 5 minutes every hour). This function is designed to periodically check the operation of the fans and of their control equipment.

Setting NO, this function is inhibited. To enable the HFN function, read the programming section on pages 13-14.

IMPORTANT INFORMATION

Before carrying out the isolation test of the electrical panel the control unit is installed on, disconnect it together

with the sensors from the power supply to prevent it from being seriously damaged.

Page 18

NT538 WS

FAIL SAFE FUNCTION

The NT538 WS has n.o selection (contact open ) / n.c (normally closed contact) for ALARM, TRIP and FAULT relays, programming steps 26 to 31 page 14. The selection of the setting YES/NO introduces functions Fail Safe and No Fail Safe.

ALARM AND TRIP Setting NO (NO Fail safe) normally open contacts are in positions 5-7 Alarm and 8-10 Trip, they switch only when limits are reached preset temperature.

Setting YES (Fail Safe) normally closed contacts are in positions 5-7 Alarm and 8-10 Trip, they switch only when limits are reached preset temperature or for lack of power.

FAULT Setting YES (Fail safe) the contact 11-12 is positioned as normally open, switches (closed) when a fault condition is identified; see section on page 12 alarms and ventilation.

Setting NO (NO Fail safe) the contact 11-12 is positioned as normally closed, switches (open) when a fault condition is identified; see section on page 12 alarms and ventilation.

Disabling the failsafe function on the fault contact, the unit will no longer be able to report the fault for lack of power. In this case it is suggested that the enabling of the fail safe on the ALARM contact for the above indication.

NOTE: When the unit is located in one of the methods described below does not monitor heat, also the relay will all be banned, the FAULT led start blinking.

 Vis. display programming.

 PRG programming.

 Test of the relays.

The FAIL SAFE is temporarily disabled The FAULT relay switches.

Pt100 EXTENSION CABLE TECHNICAL SPECIFICATIONS

1. Cable 20 x AWG 20/19 Cu/Sn

2. Section 0.55 mm²

3. Flame retardant insulation PVC105

4. CEI 20.35 IEC 332.1 regulations

5. Maximum operating temperature: 90°C

6. Conformation: 4 sets of three twisted and coloured conductors

7. Shield in Cu/Sn

8. Flame retardant PVC sheath

9. External diameter 12mm

10. Standard conformation in 100m coils

Page 19

NT538 WS

The NT series equipment boasts an innovative control function combined with the dynamic status of the Pt100 sensor. Activating FCD, the control unit analyses the increase in temperature ∆T (*) recorded in a second (°C/sec).

Enabling the function, the user can select the value (∆T) from a minimum of 1°C/sec to a maximum of 30°C/ sec. If the value sensed is higher than the value set by the user, the control unit inhibits the possible activation of the ALARM and TRIP alarms and switches the FAULT relay (11-12), displaying the message "Fcd fault".

Example: if we set the function to 5°C, FAULT will switch for FCD only if the control unit senses an increase in ∆T of over 5°C in a second on the monitored system.

Setting "no" disables the FCD function. When a channel is in FAULT for FCD, the relative Alarm and Trip warnings are inhibited on the single channel; therefore

only the over-quick temperature increase is highlighted. Press Reset to delete the FCD warnings on all channels and reset the FAULT relay.

Possible FCD applications Identification of a possible induced interference on the Pt100 sensor line

If the installation instructions are not complied with (see page 15), any interference on the Pt100 sensor line can cause false readings or anomalous alarms.

Setting the FCD function in a temperature range of between 1°C and 10°C (5°C recommended), the effects caused by false readings can be suppressed and the alarm relay activation can be prevented, as shown above.

Corrective actions: check the installation of the sensor extension cable is in line with the instructions given in the paragraph on the measurement signal transfer on page 15.

Identification of a sensor fault or faulty connection

In case of a faulty connection or sensor fault, a quick positive or negative variation in temperature might occur, leading to the system tripping or the alarms of the monitored system to be triggered.

In this specific case we recommend the FCD function to be set in a temperature range of between 10°C and 20°C. Corrective actions: check the terminals the sensor is connected to are tightened and replace the faulty sensor, if required.

Identification of the electrical motor rotor block

In case of temperature control of the electrical motors, the quick temperature increase might be due to a blocked rotor. In this specific case we recommend the FCD function to be set in a temperature range of between 20°C and 30°C. This

setting is recommended in order to prevent the FCD function from activating during motor start-up, or where the ΔT/sec. increase varies quickly.

(*) The ΔT value shows the temperature range for each second. NOTE: you should not enable the FCD function with active VOTING.

FCD FUNCTION

NT538 WS WI-FI CONNECTION

The NT538 WS control unit has a built-in WEB SERVER that is accessible via Wi-Fi connection. What is needed to access the NT538 WS control unit? To access the web server a device with a Wi-Fi connection and an Internet browser is needed. How to connect on the first start? “Access Point” mode :

Power the control unit by keeping the button on the back pressed for approximately 5 seconds.

NOTE: Access point key

The access point key allows the user to temporarily access the web server in the "Access Point" mode, forcing operation with the IP address 192.168.8.8.

How it works: With the control unit off, keep the access point button pressed, then power the

device and release the button after approximately 5 seconds

Page 20

NT538 WS

Launch the search for Wi-Fi networks from your device (PC, Smartphone or Tablet).

NOTE: the name of the network to connect to consists of: TECSYSTEM followed by the serial number S/N of the device and the year of production (18 = 2018), valuesshown on the identification label of the product purchased.

Select the TECSYSTEM (S/N + YEAR) network.

Click on CONNECT The TECSYSTEM network requires the insertion of a digital network key: TECSYSTEM in the network key window, repeat

the operation in the network key confirmation window.

Click on CONNECT Once the connection is established, your device will indicate Connected TECSYSTEM.

NOTE: Connecting to the TECSYSTEM network will result in automatic disconnection from other networks; for devices such as Smartphones or Tablets it may be necessary to disable the data connection.

Having connected to the TECSYSTEM network (S/N + YEAR) open your browser program and type in the address

192.168.8.8, that follows on page 21.

TECSYSTEM (S/N + YEAR)

TECSYSTEM

Page 21

NT538 WS

TECSYSTEM WEB SERVER

Through the Wi-Fi connection, the TECSYSTEM WEB SERVER interface allows the user to access all the information present on the web server integrated in the NT538 WS.

To take full advantage of the product features it is advisable to connect the NT538 WS to a Wi-Fi network (STATION mode). The Wi-Fi connection will allow you to manage multiple control units under a single network and to control them from any device connected to the network. The NTP Server setting (time.google.com or other), see STATION options page 24, will allow automatic updating of date and time.

The STATION or ACCESS POINT operating mode is shown in the footer on the HOME screen:

 WI-FI CONNECTED TO (NETWORK NAME) - MODBUS RUNNING (STATION)  WI-FI DISCONNECTED - MODBUS RUNNING (ACCESS POINT)

NOTICE: when the control unit is not connected as a station but as an access point, the recordings present in the device will follow a chronological order but will not have the date/time data available. Accessing the "Options" page it will be possible to set the date/time data manually, see page 24.

NOTE: in the Access point functionality to avoid loss of date and time, due to power failure, it is advisable to connect the device via UPS power supply. Failure to set the clock and calendar is indicated by a POP UP window.

The data collected on the web server is divided into 5 screens:

 Presentation screen  Home screen  Settings screen  Graphics screen  Event log screen

Open your browser and enter the address: 192.168.8.8

Select 192.168.8.8 Tecsystem Web Server, press ENTER.

The web manager's presentation page will appear for a few seconds, showing the model of the control unit, the serial number of the device and the year of production, its firmware version and the web server version.

(Device serial number, firmware version and web server version) (measured temperatures and channel status) (NT538 device programming and web manager settings) (display of temperature graphs and CHn channel data export) (display and events export)

Page 22

NT538 WS

WEB SERVER MANAGEMENT BAR The web server management bar allows the user to identify the cabin and to select the various screens.

The following information is shown in the management bar:

Control unit model

HOME screen selection key

Reference date

SETTINGS screen selection key

Reference time

GRAPHICS screen selection key

Station Name or monitored cabin (*)

EVENT LOG screen selection key

(*) The Station Name indication can be customised by the user in the options- labels settings screen, see page 25. Pressing the selection keys 5-6-7-8 it is possible to access the various screens; the web manager will display only

one screen at a time.

HOME SCREEN

The HOME screen shows the operating status of each channel, i.e.: the temperature detected by each channel, the FCDFOC-FCC sensor fault indications, activation of the F1-F2-ALARM-TRIP alarms.

Channel indication CH1-CH2-CH3-CH4-CH5CH6-CH7-CH8

FCC signal ON red LED

Channel temperature CH1-CH2-CH3-CH4-CH5CH6-CH7-CH8

F1 signal ON yellow LED (FAN1)

Channel reference label (*)

F2 signal ON yellow LED (FAN2)

FCD signal ON red LED

ALR signal ON red LED (ALARM)

FOC signal ON red LED

TRP signal ON red LED (TRIP)

(*) the label indication can be customised by the user in the options – labels settings screen, see page 25.

Page 23

NT538 WS

SETTINGS SCREEN

In the settings screen it is possible to modify the programming of the NT538 WS control unit.

Channel reference and enabling CH1-CH2-CH3-CH4-CH5-CH6-CH7-CH8

Voting setting box: (0-NO) (1-2-3) See the voting on page 16.

Channel FAN 1 Enabling CH1-CH2-CH3-CH4-CH5-CH6-CH7-CH8

Enabling of FAILSAFE FUNCTION, Relay: ALARM-TRIP-FAULT

Channel FAN 2 Enabling CH1-CH2-CH3-CH4-CH5-CH6-CH7-CH8

FAN 1 limit programming boxes On and Off (from 0°C to 240°C)

INTELLIFAN FUNCTION enabling Not available for NT538 WS

FAN 2 limit programming boxes On and Off (from 0°C to 240°C)

ALARM limit programming box (from 0°C to 239°C)

NETWORK SETTINGS key

TRIP limit programming box (from 1°C to 240°C)

Option Key

HFN setting box (from 0h to 200h) 0= function disabled

SAVE SETTINGS key

FCD setting box (from 0°C to 30°C) 0= function disabled

16 PIN CODE (*)

As for the panel programming also for programming through WEB SERVER it is necessary to follow these rules: AL. = ALARM ≥ TRIP

FAN = FAN-OFF ≥ FAN-ON. (FAN1 OR FAN2) INT = INT FAN-OFF ≥ FAN-ON (FAN1) DELTA <10°C

The cells of the editable values are accessible in white, the grey cells are not accessible. The programming limits of the monitored parameters are shown in the table above.

SAVE SETTINGS key

After entering the PIN CODE, default 00000, pressing the SAVE SETTINGS button the user updates the programming data of the NT538 WS device. The control unit will lose the connection for a few seconds, the device will start after which the new values will be available on the updated screen.

Incorrect programming of the device will result in the display of an error POP UP window with the relative signalling; the data update will not be processed.

(*) Note: PIN CODE settings and operation at page 28.

Page 24

NT538 WS

ATTENTION:

the functions described in this manual must be checked (by a specialized engineer) according to the application and features of the system the control unit is installed on.

NETWORK SETTINGS key

Pressing the NETWORK SETTINGS button the user accesses the Wireless network setting screen. In this screen the user can select the STATION or ACCESS POINT operating mode and set the network parameters.

WIRELESS MODE

it allows the user to select the operating mode.

STATION: the web server is connected via WI-FI to a pre-established network.

ACCESS POINT: the device works in the indicated mode, creating its own independent Wi-Fi network.

STATION MODE SETTINGS

Setting of the defined network parameters to which the control unit is connected.

ACCESS POINT MODE SETTINGS

Setting of network parameters: SSID network name) and Password of the network to which the control unit is connected.

1 Selection STATION mode settings

Static IP address

Wi-Fi network name (Wi-Fi network on which to connect the device)

Default gateway

Wi-Fi network password (SHOW for password verification)

Subnet mask

Server NTP address (automatic time and date update)

1 Selection ACCESS POINT mode settings

Access Point SSID (default TECSYSTEM) (network name modification)

Password (default TECSYSTEM) (SHOW for password verification)

After entering the PIN CODE, default 00000, Press SAVE to save the set values. A POP UP window will confirm the correct saving of data.

Press BACK to return to the previous screen. (*) Note: PIN CODE settings and operation at page 28.

NOTE: For information / clarifications regarding the Wifi network connection, contact your IT MANAGER

Page 25

NT538 WS

OPTIONS key

Pressing the OPTIONS button accesses the options screen. On this page it is possible to: set the date and time in the Access Point mode, select the sampling interval, customise the labels (labels) station and channels and set the username and password useful to access the web server.

The Web Access Credentials setting

It is used to set username and a password. Upon each log in to the web server, a POPUP credential window will appear.

Set data/time (AP mode) allows the user to manually set the date and time in AP mode. This information is essential for correct operation of the control unit.

Temperature Sampling Interval.

The sampling interval represents the waiting time between one recording and the next. In the timing table, below, for each selection, the number of days/months that the NT538 WS device is able to memorise is represented. Once the indicated value has been exceeded, the data will be overwritten and therefore no longer available.

Labels

The labels are used to customise, as desired, identification of the control unit and of the individual channel.

Date and time setting in mode Access point mode

Selection of sampling range every (5-10-15-20-30-60) minutes

Labels

Station Name label

Label channel 5

Label channel 1

Label channel 6

Label channel 2

Label channel 7

Label channel 3

Label channel 8

Label channel 4

Web Access Credentials (setting of Username and Password for Web Server access)

Username

Password (SHOW for password verification)

Selection

Duration in days/months

Selection

Duration in days/months

5 min.

60 days / 2 months

20 min.

243 days / 8 months

10 min.

121 days / 4 months

30 min.

365 days / 12 months

15 min.

182 days / 6 months

60 min.

730 days / 24 months

Timing table

After entering the PIN CODE, default 00000, Press SAVE to save the set values. A POP UP window will confirm the correct saving of data.

Press BACK to return to the previous screen. (*) Note: PIN CODE settings and operation at page 28.

1 2 3

4 5 6 7 8 9 10

Page 26

NT538 WS

GRAPHICS SCREEN

The Graphics screen allows the user to view the temperature trend of the enabled channels, CH1-CH2-CH3-CH4-CH5CH6-CH7-CH8, graphic view notes on page 28. Data saving can be programmed according to user needs by changing the

sampling range, options screen on page 25.

Recording points display flag

Data availability A yy/mm/dd Time: hh/mm/ss

CHn channel enabling flag

View key

Data availability DA yy/mm/dd Time: hh/mm/ss

Export key

EXPORT button

By pressing the EXPORT button, all the temperature values recorded according to the FROM/TO selections can be downloaded in CSV format (text file). Export notes CSV file on page 28.

VIEW button

Pressing the VIEW button will update the chart according to the dates selected FROM/TO.

FROM box

It allows the user to select the period of graphic display by changing the data availability from yy/mm/dd - Time: hh/mm/ss

TO box

It allows the user to select the period of graphic display by changing the data availability to yy/mm/dd - Time: hh/mm/ss

CH channel selection flag

Recording points display flag

Enabling the recording points display flag it will be possible to identify each recording in the graph. Clicking on the individual point will show the information of: channel, date, time and recorded temperature value.

Enable / disable the graphic display of the individual CHn channel.

1 2 3 4 5

Page 27

NT538 WS

EVENT LOG SCREEN

The Event log screen is used to quickly obtain an immediate overview of the events recorded by the control unit. Each event is identified with ID code, see event ID table.

Events ID (see ID events table)

Event channel numbering

Date and time

Temperature value recorded

Description

Export key

Pressing the EXPORT button results in downloading of all the events recorded in CSV format, see notes on page 28.

ID events table

EXPORT key

3 4 5 1 2

Code

Message

Description

I00

system restarted

web server start

I01

real time clock sync

Automatic setting date and time via sync server

I02

web server access

I03

web server in STATION mode start

Start mode web server in STATION

I04

Wi-Fi Access point started

web server in ACCESS POINT mode start

I05

Wi-Fi connected

Web server connected to the Wi-Fi network

I06

Setting saved

Saving of web server network parameters

I07

temperature log saved to csv

saving of the csv file temperatures

I08

event log saved csv

saving of the csv file events log

W00

Wi-Fi not connected

A Wi-Fi disconnected from the network

W01

Real time clock set to last saved

Reset date and time, automatic, from the last saving

W02

Real time clock manually set

Manual date and time setting

W03

diagnostic button pressed

the access point key has been pressed

R00

Fcc off

FCC OFF fault signal on CHn channel identified

R01

Foc off

FOC OFF fault signal on CHn channel identified

R02

Fcd off

FCD OFF fault signal on CHn channel identified

R03

Fan1off

FAN1 OFF switch off signal on CHn channel identified

R04

Fan2off

FAN2 OFF switch off signal on CHn channel identified

R05

Alarm off

ALARM OFF switch off signal on CHn channel identified

R06

Trip off

TRIP OFF switch off signal on CHn channel identified

S00

Fcc on

FCC ON fault signal on CHn channel identified

S01

Foc on

FOC ON fault signal on CHn channel identified

S02

Fcd on

FCD ON fault signal on CHn channel identified

S03

Fan1on

FAN1 ON activation signal on CHn channel identified

S04

Fan2on

FAN2 ON activation signal on CHn channel identified

S05

Alarm on

ALARM ON activation signal on CHn channel identified

S06

Trip on

TRIP ON activation signal on CHn channel identified

E00

Modbus error

Modbus error signal

E01

Internal error

Signal internal web server error

Page 28

NT538 WS

PIN CODE

PIN CODE is a five-digits code, programmable by the user, useful to confirm the user's intention to modify the device programming or network settings. It represents the key for changing the parameters reserved for the system operator manager, limiting any risks of unauthorized modifications or programming errors. Without the PIN CODE, or with the wrong PIN, device programming cannot be changed.

How to change the PIN CODE: Switch off the device and switch it on again keeping the access point key, placed on the back, press it for at least

2 seconds.

Connect to the device and type, on the browser screen, the IP address http: // XXX. XXX.XX.XXX /setpin.html

Example: Press ENTER, the SET PIN CODE screen will open.

Type the new pin code desired, in the appropriate box, maximum 5 numbers (SHOW to display the PIN CODE). Press SAVE to save the pin. A POP UP window will confirm the correct saving. PIN CODE default setting: 00000 Press BACK to main page to return to the main screen.

GRAPHIC VIEW NOTES

When the graphic page opens, the last 300 recorded points are displayed by default; if there are less than 300 points in memory, the available ones are displayed.

If you set the "from” – “ to "dates the chart view graphic is " zoomed" and shows only the points that fall within the specified selected dates.

In the case of the "from" - "to" interval are outside of the default display "300 points" (but in any case within the data availability interval, because the two input fields do not allow the insertion dates outside of those available), the display starts from the date "from" and continues towards "to" but only up to a maximum of 1500 points.

When the 1500 points are exceeded, a message will be signaled to the user to warn that the displayed interval may be lower than the one requested.

EXPORT NOTES CSV FILE

Following the exporting of the CSV file for EVENT LOG all the recorded events are exported. Following the exporting of the CSV file recorded TEMPERATURE VALUE, the last 300 recorded points will be contained

in the file; if there are less than 300 points in memory the available data are exported. In the case of "from" - "to" dates are set, in the graphic, the temperature values exported will only be the points that fall

within the specified selected dates. If the "from" - "to" interval is outside the default display "300 points" (but in any case within the data availability interval, because the two input fields do not allow to set dates outside those available) all the points recorded will be include in the exported file.

(IP ADDRESS)

Page 29

NT538 WS

The Product purchased is covered by the manufacturer's or seller's warranty at the terms and conditions set forth in the "Tecsystem s.r.l's General Conditions of Sale", available at www.tecsystem.it and / or purchase agreement. The warranty is considered valid only when the product is damaged by causes attributable to TECSYSTEM srl, such as manufacturing or components defects. The warranty is invalid if the Product proves to have been tampered with / modified or incorrectly connected and causing voltages outside the set limits and does not comply with the technical data for use and assembly, as described in this instruction manual. The warranty is always ex Corsico as stated in the "General Conditions of Sale".

WARRANTY CONDITIONS

TROUBLESHOOTING

CAUSES AND SOLUTIONS

The control unit does not switch on and the supply to terminals 40-42 is correct.

Check that: the connector is firmly inserted in its place, the connection wires are tight and that there are no obvious signs of burns on the connectors. Turn off the power supply and carry out the above instructions, restore the voltage.

One of the channels is in FAULT for FOC/FCC

Check the connections of the Pt100 sensors, check the indications in the paragraphs: measurement signal transfer and diagnostics of thermometric sensors page14-15.

When turned on, the indication "ECH" appears

A strong disturbance has damaged the memory data. See the paragraph for programmed data diagnostics on page 16.

All the Pt100 sensors are in FCC.

Incorrect sensor connection, the terminal block has been inserted upside down. Check the connections and the terminal board.

The temperature shown by one or more channels is wrong.

Contact the TECSYSTEM Technical Department.

Sudden trip of the main switch. The temperature is on standard levels. Just one channel has caused the trip.

Check the temperatures recorded in T-MAX, check the instructions given in the paragraphs: measurement signal transfer and diagnostics of thermometric sensors page16. Activate the FCD function.

FCD warning

See the FCD function on page 19.

During the operation of the web server it is not possible to display the date and time and also the graphics screen does not work.

In the Access point mode select settings/Options and enter the date and time in the Set data/time (AP mode) box In Station mode, select settings/Networking and enter time.google.com in the Server NTP box

The web server has been set in Access Point mode but the network cannot be identified.

With the control unit off, keep the access point button pressed, then power the device and release the button after approximately 5 seconds. The TECSYSTEM network (S/N + YEAR) will appear and connect to the network using the TECSYSTEM password. Open your browser and type in the address 192.168.8.8 use the web server bar to enter the Settings page, press the Network setting button and check: the ACCESS POINT selection, the settings SSID and Password, press save.

The web server has been set in Station mode but the web server cannot be accessed.

With the aid of a device with a Wi-Fi connection (PC, Smartphone or Tablet) with the control unit off, keep the access point button pressed, then power the device, and release the key after approximately 5 seconds. Launch the search for the Wi-Fi network from your device. The TECSYSTEM network will appear (S/N + YEAR), connect to the network using the TECSYSTEM password. Open your browser and type in the address 192.168.8.8, use the web server bar to enter the Settings, page, press the Network setting button and check: STATION selection, settings: IP – GATEWAY -SUBNET MASK – NET WORK SSID – PASSWORD, press save.

Contact the TECSYSTEM Technical Department if the problem persists.

Page 30

NT538 WS

TECHNICAL INFORMATION: [email protected]

COMMERCIAL INFORMATION : [email protected]

USEFUL CONTACTS

European directives 2012/19/EC (WEEE) and 2011/65/EC (RoHS) have been approved to reduce electrical and electronic waste and to promote the recycling and reuse of the materials and components of said equipment, cutting down on the disposal of the residues and harmful components of electrical and electronic materials.

All the electrical and electronic equipment supplied after 13 August 2005 is marked with this symbol, pursuant to European directive 2002/96/EEC on electrical and electronic waste (WEEE). Any electrical or electronic equipment marked with this symbol must be disposed of separately from normal domestic waste.

Returning of used electrical appliances: contact TECSYSTEM or the TECSYSTEM agent to receive information on correct disposal of the appliances.

TECSYSTEM is aware of the impact its products have on the environment and asks its customers active support in the correct and environmentally-friendly disposal of its devices.

EQUIPMENT DISPOSAL