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Summary of Contents for TECSYSTEM NT935 WS EVO
- Page 1 INSTRUCTION MANUAL NT935 WS EVO 1MN0201 REV. 0 operates with ISO9001 certified quality system TECSYSTEM S.r.l. 20094 Corsico (MI) Tel.: +39-024581861 Fax: +39-0248600783 http://www.tecsystem.it R. 1.1 16/11/20 ENGLISH “Translations of the original instructions”...
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Page 2: Table Of Contents
INTRODUCTION First of all we wish to thank you for choosing to use a TECSYSTEM product and recommend you read this instruction manual carefully: You will understand the use of the equipment and therefore be able to take advantage of all its functions. - Page 3 ………………………………….. 8) FAILSAFE FUNCTION 9) Pt100 EXTENSION CABLE TECHNICAL — ………………………………….. SPECIFICATIONS ………………………………….. 10) FCD FUNCTION — ………………………………….. 11) NT935 WS EVO WI-FI CONNECTION ………………………………….. 12) TECSYSTEM WEB SERVER ………………………………….. • HOME SCREEN — ………………………………….. • TEMPERATURE AND ALARMS SCREEN …………………………………..
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Page 4: Safety Requirements
BATTERY Inside the NT935 WS EVO device there is a lithium manganese dioxide battery. Do not open the control unit; the battery used is maintenance-free. Do not expose the device to temperatures above or below the operating range (–20°C to +60°), do not expose it to fire (risk of explosion). -
Page 5: Accessories
Code: 2PL0420 - Screw tightening torque 0.25Nm 1 external Wi-Fi SMA Antenna ATTENTION: always install the device using the terminals included in the pack. The use of terminals other than those included with the control unit could cause malfunctions. NT935 WS EVO... -
Page 6: Technical Specifications
TECHNICAL SPECIFICATIONS NT935 WS EVO POWER SUPPLY 85-260 Vac-Vdc Supply rated values 50/60HZ ● Vdc with invertible polarities INPUTS ● 4 inputs for three-wire Pt100 RTD sensors (max section 1.5mm²) ● Connections on removable terminal boards ● Input channels protected against electromagnetic interference 500m (1mm²) - Page 7 TECHNICAL SPECIFICATIONS NT935 WS EVO ● Digital linearity of sensor signal ● Self-diagnostic circuit Electronic part protective treatment Optional 3V 220mAh Internal battery for RTC power supply DISPLAY AND DATA MANAGEMENT ● 2 x 13 mm displays with 3 digits to display temperatures, messages and channels ●...
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Page 8: Front Panel
FAN 1 (yellow) LED T-max mode selection (red) LED FAN 2 (yellow) LED Man mode selection (yellow) LED Display mode selection key Auto mode selection (green) LED Fixing blocks Scan mode selection (yellow) LED UP key Fixing blocks DOWN key NT935 WS EVO... -
Page 9: Display
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. -
Page 10: Assembly
Panel hole dimensions (+0.8 mm tolerance) Identification label Secure the appliance firmly by means of the supplied fixing blocks. Connect the Wi-Fi antenna only after suitably fixing the device. 1MN0008 REV. 0 Control unit Fixing screws Fixing blocks Cross-head screwdriver #1X100mm NT935 WS EVO... -
Page 11: Electrical Connections
ELECTRICAL CONNECTIONS The Wi-Fi antenna (5) is supplied with the NT935 WS EVO NT935 WS EVO device. If necessary, the antenna connection can be extended using a 5 mm SMA Male to Female antenna cable. NOTE: Never start device with antenna disconnected. -
Page 12: Power Supply
POWER SUPPLY The NT935 WS EVO can be supplied by 85 to 260 Vac-Vdc, 50/60Hz irrespectively of the polarity in Vdc (terminals 40-42). This particularity is obtained thanks to the use of a tested power supply, of new conception and realisation, which frees the installer from any uncertainty regarding the correct Vac or Vdc power supply. -
Page 13: Programming
PROGRAMMING NT935 WS EVO PITCH PRESS EFFECT PRESS NOTES Press and hold the PRG button until the display shows SET PRG Select PRG SET to proceed with programming or PRG 1 PRG 1 default data to load the default values The ALARM threshold for (CH 1-2-3) is displayed. -
Page 14: Programming Notes
The device automatically prepares itself for the programming step of the error committed 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. NT935 WS EVO... -
Page 15: Temperature Sensors
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 could cause possible reading anomalies. -
Page 16: Temperature Sensor Diagnostics
Activation of the functions: VOTING (shown below) or FCD (on page 19) in relation to the system conditions. CAL message display: the indication appears when the measurement circuit is damaged. The temperature values displayed might be incorrect. Return the control unit to TECSYSTEM for repairs. VOTING FUNCTION The voting function derives from the redundancy concept that consists in duplicating the components of a system to increase their reliability. -
Page 17: Cooling Fan Control
COOLING FAN CONTROL The NT935 WS EVO control unit is fitted with two FAN contacts (FAN1 and FAN2) and, if programmed correctly, can control the fans switching ON and OFF to cool the transformer. The FAN1 and FAN2 contacts can manage cooling of the transformer and the room where it is installed: the cabin. -
Page 18: Failsafe Function
4. Standards CEI 20.35 IEC 332.1 5. Maximum operating temperature: 90°C 6. Configuration: 4 triples of three twisted and coloured conductors 7. Screen on Cu/Sn 8. Fireproof PVC sheath 9. Outer diameter 12 mm 10. Standard configuration in 100 m coils NT935 WS EVO... -
Page 19: Fcd Function
NOTE: it is advisable not to enable the FCD function with VOTING active. NT935 WS EVO WI-FI CONNECTION The NT935 WS EVO control unit has a built-in WEB SERVER that is accessible via Wi-Fi connection. What is needed to access the NT935 WS EVO control unit? To access the web server a device with a Wi-Fi connection and an Internet browser is needed. - Page 20 TECSYSTEM (S/N + YEAR) 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 (20 = 2020), valuesshown on the identification label of the product purchased.
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Page 21: Tecsystem Web Server
NT935 WS EVO. To take full advantage of the product features it is advisable to connect the NT935 WS EVO 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. -
Page 22: Home Screen
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. NT935 WS EVO... -
Page 23: Settings Screen
After entering the PIN CODE, default 00000, by pressing the SAVE SETTINGS key the user updates the programming data of the NT935 WS EVO device. The control unit will lose the connection for a few seconds, the device will reset after which the new values will be available on the updated screen. -
Page 24: Network Settings
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 enabling of the functions described in this manual must be checked (by a specialist engineer) according to the application and features of the system the control unit is installed on. -
Page 25: Options
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. Note: PIN CODE settings and operation on page 29. Press BACK to return to the previous screen NT935 WS EVO... -
Page 26: E-Mail Settings
After entering the PIN CODE, default 00000, press SAVE to save the set values. A POP UP window will confirm correct saving of the data. Press BACK to return to the previous screen Note: PIN CODE settings and operation on page 29. NT935 WS EVO... -
Page 27: Trend Chart Screen
By pressing the EXPORT key it is possible to download all the recorded temperature values in CSV format (text file). Before pressing the export button, select the year you want to export. CSV file export notes on page 29. NT935 WS EVO... -
Page 28: Event Log Screen
TRIP ON activation signal on CHn channel identified Modbus error Modbus error signal Internal error Signal internal web server error Log index recovered Signalling of events log indices reset Log index cleared Report deletion of events log indices NT935 WS EVO... -
Page 29: Trend Chart Notes
Type the new desired pin code 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 NT935 WS EVO... -
Page 30: Statistics Screen
By analysing the periodic reports received, directly on their own e-mail, the maintenance technicians will be able to identify any anomalies and plan in advance the interventions on the systems NT935 WS EVO... -
Page 31: Troubleshooting
"Tecsystem s.r.l. General Sales Conditions", which can be consulted on the website www.tecsystem.it and/or in the stipulated purchase contract. The warranty is considered valid only when the product is damaged by causes attributable to TECSYSTEM srl, such as manufacturing or components defects. -
Page 32: Equipment Disposal
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.
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