Related Manuals for TECSYSTEM FO 935
Summary of Contents for TECSYSTEM FO 935
- Page 1 INSTRUCTION MANUAL FO 935 1MN0224 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 12/01/22 ENGLISH “Translations of the original instructions”...
- Page 2 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 • — FO 935 BASIC/D PROGRAMMING ………………………………….. • PROGRAMMING NOTES ………………………………….. — 9) FAIL SAFE FUNCTION ………………………………….. 10) RS485 MODBUS (only for FO 935 D) — ………………………………….. • INTRODUCTION TO THE MODBUS INSIDE MODULE — • ………………………………….. OPERATING NOTES —...
- Page 4 POWER SUPPLY The FO 935 control unit can be supplied by 85 to 260 Vdc-Vac, irrespectively of polarity in Vdc. Before using it, make sure the power cable is not damaged, knotted or pinched. Do not tamper with the power cable. Never disconnect the unit by pulling the cable and avoid touching the pins.
- Page 5 CFO 521 Concentrator CFO 521 Concentrator Start guide and QR code 2 Terminals 4 pitch poles 3.81 connection FO 935 and CFO 521 Code:2PL0368 - Screws tightening torque 0.25Nm 1 Terminal 3 poles pitch 3.81 Pt100 CH4 Code:2PL0366 - Screws tightening torque 0.25Nm ATTENTION: always install the device using the terminals included in the pack.
- Page 6 FO SENSORS 3 temperature sensors in fibre optic 2.5mt Start guide and QR code TECHNICAL SPECIFICATIONS FO 935 BASIC FO 935 D POWER SUPPLY 85-260 Vda-Vac 85-260 Vda-Vac Supply rated values 50/60HZ 50/60HZ ● ● Vdc with invertible polarities INPUTS ●...
- Page 7 FO sensor diagnostics (FCC-FOC-FLT) ● ● Data memory diagnostics (Ech) ● ● Communication diagnostics FO 935 to CFO 521 (TEC) ● ● Access to programming through front keyboard Automatic exit from programming, display and relay test after 1 ● ●...
- Page 8 TECHNICAL SPECIFICATIONS CONC. CFO 521 INPUTS 1 FO 935 digital BUS input FO IN 3 fibre optic FO sensor inputs (ST connectors) CH1-CH2-CH3 1 2/3-wire Pt100 probe input OUTPUTS 1 digital BUS output FO OUT TESTS AND PERFORMANCE ● 3 signalling LEDs L1-L2-L3 Work environment temperature From -25°C to +60°C...
- Page 9 Programming/Setting key TRIP signalling (red) LED Led/relay test key ALARM signalling (yellow) LED Modbus communication RS (green) LED (ONLY FO 935 D) FAULT signalling (red) LED 3-digit channel display FAN 1 (yellow) LED T-max mode selection (red) LED FAN 2 (yellow) LED...
- Page 10 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 relays operation without having to use further devices.
- Page 11 The CFO 521 support bracket could facilitate this operation. Always respect the safety distance, suggested by the transformer manufacturer, from the transformer windings. Fix the bracket, on one of the sides of the transformer, using the 8mm hole with an M8 pin with nut and washer. FO 935...
- Page 12 CONNECTION OF THE CONC. CFO 521 / TO THE FO 935 CONTROL UNIT 1MN0228 REV.0 Connect the FO IN input of the CFO521 concentrator to the FO IN input of the FO 935 control unit, respecting the numbering B1-B2-B3-B4. The FO OUT output is not used (provision for future development).
- Page 13 The CFO 521 device electronically acquires and converts the temperatures detected by the FO sensors CH1-CH2-CH3 and CH4 (Pt100) and sends the detected data to the FO 935 monitoring unit via the TEC digital communication bus. The FO (fibre optic) temperature sensors must be connected to the CH1-CH2-CH3 inputs arranged in the three phases of the U-V-W transformer.
- Page 14 FO 935 ASSEMBLY Drill a hole in the panel sheet with dimensions of 92 x 92 mm. 1MN0007 REV.0 Control unit Panel hole dimensions (+0.8 mm tolerance) Identification label Secure the appliance firmly by means of the supplied fixing blocks.
- Page 15 ELECTRICAL CONNECTIONS FO 935 BASIC 1MN0224 REV.0 Power supply 85-260Vdc-ac 50/60Hz FO IN bus input for connection to the CFO 521 Relay (ALARM-TRIP-FAULT-FAN1-FAN2) FO 935 D 1MN0225 REV.0 Power supply 85-260Vdc-ac 50/60Hz FO IN bus input for connection to the CFO 521...
- Page 16 POWER SUPPLY The FO 935 control unit can be supplied by 85 to 260 Vdc-Vac, 50/60 Hz irrespectively of 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 17 Note: exceeding of the minimum/ maximum full scale can also be caused by possible disturbances on the communication lines or by strong magnetic fields; in this case, the following is recommended: Check the correct installation of the sensors and especially of the extension cable between the CFO 521 concentrators and the FO 935 control unit. FO 935...
- Page 18 (displaying programmed parameters) and modifiable in the PRG mode (programming). COOLING FAN CONTROL The FO 935 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.
- Page 19 PROGRAMMING FO 935 BASIC/D STEP 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 20 Select YES or NO Default NO FLS (FAULT) is displayed Blinking FAULT LED Select YES or NO Default YES For version FO 935 (BASIC) skip to step 38 Modbus address ADR <>"datum" is displayed Default 001 Set the address 1 to 255 Modbus transmission speed BDR <>"datum"...
- Page 21 FAIL-SAFE FUNCTION The FO 935 control unit has the selection n.o (normally open contact) / n.c (normally closed contact) for the ALARM, TRIP and FAULT relays, programming steps from 26 to 31 page 20.Selecting the YES/NO setting introduces the Fail Safe and No Fail Safe functions.
- Page 22 The FO 935 D control unit is in communication with the network only when it is in temperature reading mode, while it is inactive when in the following modes: display, programming and test relays.
- Page 23 Trip thresholds and that the Fan-on thresholds must be higher than the Fan-off thresholds. In case you try to set these thresholds incorrectly, the control unit FO 935 D will not proceed with the programming and storage of data, therefore in subsequent readings will read the data from the previous schedule.
- Page 24 In the case in which all the fans are turned off (FAN1, FAN2) the test of the relay will not take place. UNACCEPTABLE DATA There are some programmings that are not acceptable as they are not foreseen by the FO 935 D instrument; such data will be discarded without producing any error message (EXCEPTION CODE).
- Page 25 Data HI Data LO Notes 1 Notes 2 W:write (10) W: read/write HFN (Fan test) 0=No test 1÷200h FREE See Note FREE See Note CPU Setting See Notes CPU Error See Notes See Notes Status Relay FREE See Note FO 935...
- Page 26 2’compl.Ch2 temper. 2’compl. sign 1°C ÷ 190°C As (AL) alarm set point 2’compl.Ch2 temper. 2’compl. sign 1°C ÷ 190°C As (TRP) trip set point 2’compl. sign 2’compl.Ch3 temper. –35°C ÷ 195°C 2’compl. sign 2’compl.Ch3 max temperat. 0°C ÷ 195°C FO 935...
- Page 27 2’compl. sign 2’compl.Ch4 temper. –35°C ÷ 195°C 2’compl. sign 2’compl.Ch4 max temperat. 0°C ÷ 195°C 2’compl.Ch4 temper. 2’compl. sign 1°C ÷ 190°C alarm set point 2’compl.Ch4 temper. 2’compl. sign 1°C ÷ 190°C trip set point FO 935...
- Page 28 Data LO Notes 1 Notes 2 W:write (10) W: read/write Ch1 story Ch1 status See Notes CHx Ch2 story Ch2 status See Notes CHx Ch3 story Ch3 status See Notes CHx Ch4 story Ch4 status See Notes CHx FO 935...
- Page 29 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 TEC ERR FO FLT CPU SETTING BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 Failsafe Failsafe fault Failsafe trip alarm FO 935...
- Page 30 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.
- Page 31 USEFUL CONTACTS TECHNICAL INFORMATION: ufficiotecnico@tecsystem.it COMMERCIAL INFORMATION: info@tecsystem.it FO 935...
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