TECSYSTEM NT935-4 Instruction Manual Download Page 2

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NT935-4
ASERIES

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1) SAFETY REQUIREMENTS

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2) ACCESSORIES

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3) TECHNICAL SPECIFICATIONS

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4) FRONT PANEL

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DISPLAY

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OPERATING PROGRAM CONTROL

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NOTES ON SCAN AND MAN FUNCTIONS

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LED TEST

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ALARM RELAY TEST

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ALARM RELAY SILENCING

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5) MOUNTING

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6) ELECTRICAL CONNECTIONS NT935-4 BASIC

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NT935-4 AD BACK

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POWER SUPPLY

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ALARMS AND VENTILATION

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FAULT AND RESET MESSAGE SEQUENCE

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7) PROGRAMMING

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NT935-4

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PROGRAMMING NOTES

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TEMPERATURE SENSORS

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MEASUREMENT SIGNAL TRANSFER

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TEMPERATURE SENSOR DIAGNOSTICS

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VOTING FUNCTION

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PROGRAMMED DATA DIAGNOSTICS

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TEMPERATURE DIAGNOSTICS

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COOLING FAN CONTROL

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FAN TEST

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CONTENTS

INTRODUCTION

First of all we wish to thank you for choosing to use a

TECSYSTEM

product and recommend you read this instruction

manual carefully: You will understand the use of the equipment and therefore be able to take advantage of all its
functions.

ATTENTION! THIS MANUAL IS VALID AND COMPLETE FOR THE NT935-4 BASIC AND NT935-4 AD CONTROL
UNITS

Summary of Contents for NT935-4

Page 1: ...s with ISO9001 certified quality system http www tecsystem it R 1 1 29 09 17 Translations of the original instructions ENGLISH TECSYSTEM S r l 20094 Corsico MI Tel 39 024581861 Fax 39 0248600783 NT935...

Page 2: ...GRAMMING 14 NT935 4 PROGRAMMING NOTES 16 TEMPERATURE SENSORS MEASUREMENT SIGNAL TRANSFER TEMPERATURE SENSOR DIAGNOSTICS 17 VOTING FUNCTION PROGRAMMED DATA DIAGNOSTICS TEMPERATURE DIAGNOSTICS 18 COOLIN...

Page 3: ...ET FUNCTION CODE 20 CODE 3 10 CODE 16 10 NOTES FOR REMOTE PROGRAMMING ERROR CODES 21 ILLEGAL DATA POLLING FREQUENCY MODBUS MAPPING TABLE 22 9 FAIL SAFE FUNCTION 27 10 OUTPUT 4 20mA only for NT935 4 AD...

Page 4: ...ands 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...

Page 5: ...5Nm 1 Pt100 sensor terminal 12 poles pitch 3 81 Code 2PL0420 Screws tightening torque 0 25Nm 1 terminal 2 poles pitch 5 for 4 20mA output Code 2PL0364 or 2PL0363 Screws tightening torque 0 5Nm 1 RS485...

Page 6: ...lays ALARM AND TRIP SPDT 1 sensor or operating failure FAULT relay SPST Output relays with 10A 250Vac res COS 1 contacts 2 ventilation management relays SPST FAN 1 AND FAN 2 Modbus RTU RS485 output NO...

Page 7: ...elected 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 thresholds for each cha...

Page 8: ...tion green LED only AD 5 FAULT red LED 16 3 digit channel display 6 FAN 1 yellow LED 17 T max mode selection red LED 7 FAN 2 yellow LED 18 Man mode selection yellow LED 8 Display mode selection key 19...

Page 9: ...the measurement circuit The temperature values displayed might be incorrect Return the control unit to TECSYSTEM for repair 4 Pt Err This message appears when it is detected that one or more PT100 se...

Page 10: ...supplied 1 Control unit 2 Panel hole dimensions 0 8mm tolerance 3 Identification label 1 Control unit 3 Fixing screw 2 Fixing block 4 Crosshead screwdriver 1X100mm MOUNTING 1 1MN0007 REV 0 2 3 1 2 3 4...

Page 11: ...ph on page 13 3 and see the opening of the fault contact ALARM CONDITION AUDIO AND VISUAL INDICATION STOP SYSTEM Pt100 CONNECTION EXAMPLE Note before connecting the sensors to the control unit read th...

Page 12: ...STOP SYSTEM ALARM CONDITION AUDIO AND VISUAL INDICATION Pt100 CONNECTION EXAMPLE Note before connecting the sensors to the control unit read the Measurement signal transfer paragraph on page 16 Note...

Page 13: ...does not monitor the temperature and the relays are all blocked The fault contact switches and the fault LED flashes Vis programming display PRG programming Relay test The ALARM and TRIP relays switc...

Page 14: ...ES FOR CH1 activation FAN1 and FAN2 are flashing info functioning fans fan cooling control section page 18 10 Select YES FAN1 FAN2 enabled flashing YES only FAN1 enabled flashing YES only FAN2 enabled...

Page 15: ...FAULT LED flashes FAULT 32 Set YES or NO Default YES For NT935 BAS version jumps to step 41 33 ADR datum is displayed Modbus address Default 001 34 Set the address From 1 to 255 35 BDR datum is displa...

Page 16: ...ouples 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 incorrec...

Page 17: ...es from the redundancy concept that consists in duplicating the components of a system to increase their reliability How does VOTING work Using the redundancy principle we use the sensors installed on...

Page 18: ...of the contact FAN1 in relation to the threshold ON OFF programmed to FAN1 YES only FAN2 enabled flashing The selected channel CHn enable the switching of the contact FAN2 in relation to the threshol...

Page 19: ...hen in the following modes display programming and relay test RS485 ELECTRICAL CONNECTIONS As far as the signal cable to be used in order to ensure the correct network operation is concerned we recomm...

Page 20: ...ou try to set these thresholds wrongly the NT935 AD monitoring unit won t proceed with programming and data storage therefore in the following readings you will read the data relevant to the previous...

Page 21: ...set equal to 0 that is NO_VOTING GENERAL UNIT NOTE The models of the unit can be equipped with different options to avoid disruption of production their existence is defined by Fw indicated power with...

Page 22: ...ions see note Options see note R 7 00 Wrong datum received R see tab 8 00 Info various causes R see tab 9 00 Commands W see tab SYSTEM Setting and Status Address LO 10 Data HI Data LO Note 1 Note 2 R...

Page 23: ...Address LO 10 Data HI Data LO Note 1 Note 2 R read W write RW read write 25 2 compl sign 2 compl Ch1 temper 10 C 240 C 48 C 200 C R 26 2 compl sign 2 compl Ch1 max temperat 0 C 240 C 0 C 200 C R 27 2...

Page 24: ...200 C R 38 2 compl sign 2 compl Ch4 max temperat 0 C 240 C 0 C 200 C R 39 2 compl sign 2 compl Ch4 temper alarm set point 1 C 240 C 1 C 200 C As AL RW 40 2 compl sign 2 compl Ch4 temper trip set point...

Page 25: ...60 00 Ch4 Setting See Note CHx RW 61 00 00 R 62 00 00 R 63 00 00 R 64 00 00 R CHANNELs 1 4 Status Address LO 10 Data HI Data LO Note 1 Note 2 R read W write RW read write 65 Ch1 story Ch1 status See...

Page 26: ...TATUS CHn STORY BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 TRIP ALARM FOC FCC RELAY STATUS coil energizing status BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 FAULT relay 1 ON TRIP relay 1 ON...

Page 27: ...mA 0 2 mA Note We recommend you use a screened and twisted cable connect the twisted pair taking polarities into account and lay the network avoiding narrow bends or ring windings Always position the...

Page 28: ...easurement signal transfer on page 16 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 o...

Page 29: ...check the instructions given in the paragraphs measurement signal transfer and temperature sensor diagnostics on page 16 Activate the FCD function FCD warning See the FCD function on page 28 Contact...

Page 30: ...F THE EQUIPMENT 0 45 Kg INPUT SUPPLY 24 240 Vac Vdc 10 50 60 Hz 7 5VA max PROTECTION External switch or circuit breaker OUTPUTS RELAYS 5 relay Output 10A 250Vac res COS 1 OPTIONAL PORTS AD RS485 4 20m...

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