Laurel-electronics LT SERIES TRANSMITTERS ANALOG INPUT Manuale Utente

LT SERIES TRANSMITTERS ANALOG INPUT 4-20 MA OUTPUT & RS232 / RS485 I/O USER MANUAL LAUREL Electronics Inc. 3183-G Airway A

- 10 - Click on DPM => Get Setup to retrieve the current setup information from your DPM trans-mitter, then on View => Setup, which w

- 11 - Click on the Filter tab to set to set up filtering for your readings. The filter time constant can be automatic, be specified in seconds, or

- 12 - Click on the Communication tab to view the communication parameters that you used to establish default communications with yo

- 13 - ADDITIONAL FEATURES • The Commands pull-down menu allows you to execute certain functions by using your computer mouse. This men

- 14 - Graph • The Jumpers pull-down menu shows jumper positions for the selected signal conditioner boards and the main board, duplica

- 15 - 8. OPENING YOUR TRANSMITTER CASE WHEN TO CHANGE JUMPERS Most users will never have the need to open the transmitter case. The t

- 16 - 9. DC SIGNAL CONDITIONER BOARD JUMPER SETTINGS Five voltage and four current ranges are jumper selectable. These also have to b

- 17 - 10. AC RMS SIGNAL CONDITIONER BOARD JUMPER SETTINGS Five voltage and four current ranges are jumper selectable. These also have to be select

- 18 - 11. LOAD CELL SIGNAL CONDITIONER BOARD JUMPER SETTINGS Five ranges are jumper selectable. These also have to be selected in Instrument Setup

- 19 - 12. THERMOCOUPLE SIGNAL CONDITIONER BOARD JUMPER SETTINGS Seven thermocouple types are jumper selectable. These also have to be selected i

- 2 - 1. ORDERING GUIDE Configure a model number in this format: LT20DCV1, CBL04 Transmitter Type LT...4-20 mA, 0-20 mA or 0-10V isolated an

- 20 - 13. RTD & OHMS SIGNAL CONDITIONER BOARD JUMPER SETTINGS The same signal conditioner board is used for 4 RTD types and 5 resistance range

- 21 - 14. MAIN BOARD JUMPER SETTINGS E1E4E3E2abcaba bcdE6abcd Serial Signal Duplex Jumpers Termination Resistor* Full None E6 a = Transmit E6 c

- 22 - 15. DUAL RELAY OPERATION Dual solid state relays are standard and can operate in a basic alarm mode, in a hysteresis band mode, or in

- 23 - 16. INPUT SIGNAL FILTERING A moving average filter is selectable in software to process the internal digital readings, which are taken a

- 24 - 18. CUSTOM CURVE LINEARIZATION Curve.exe is a DOS-based, executable PC program used to set up an Extended transmitter so that the interna

- 25 - 19. MODBUS PROTOCOL TRANSMITTER COMMUNICATIONS 1.0 GENERAL The Modbus capability conforms to the Modbus over Serial Line Specif

- 26 - 4.0 COMMUNICATIONS SETUP Parameters selectable via Instrument Setup software, distributed on CD ROM: Serial Protocol ...

- 27 - FC08: Diagnostics Checks communications between the Master and Slave, and returns the count in the Modbus Slave counters (which are reset when

- 28 - 6.0 SUPPORTED EXCEPTION RESPONSE CODES Code Name Error Description ---- -------------------- ----------------------------------

- 29 - Modbus ASCII Format Byte Number FC Action 1 2 3 4 5 6 7 8 9 10 11 12 13 03 03 Request Response : : MA MA FC FC RA NB RA DD* NR DD

- 3 - 2. TABLE OF CONTENTS 1. ORDERING GUIDE ...

- 30 - 20. CUSTOM ASCII PROTOCOL TRANSMITTER COMMUNICATIONS 1.0 SERIAL COMMUNICATION FORMAT Mode ... Full Duplex (Separate tran

- 31 - Values are transmitted in a continuous string with no intervening spaces. If the 5th digit in is set to 1 using Instrument Setup softwar

- 32 - Char # Character Description 1 2 3 4 * 0-V A-Z 0-U Command Identifier. Recognition Character. Device Address. 0 addresses all devices, 1-V s

- 33 - Peak value reset *1C3 Remote display reset *1C4 Valley reset *1C9 Tare function *1CA Tare reset *1CB 6.0 READING

- 34 - General, Reading and Writing Ram Memory Data RAM memory data is read and written as a continuous string of bytes consisting of

- 35 - 21. LT SERIES ANALOG INPUT TRANSMITTER SPECIFICATIONS Mechanical Case dimensions...

- 36 - Input Signal Noise Rejection CMV, DC to 60 Hz...

- 37 - Load Cell & Microvolt Input Range Input Resistance Input Error ±20.000 mV ±50.000 mV ±100.00 mV ±250.00 mV ±500.00 mV 1 GΩ 0.01% of FS ±

- 38 - Over-voltage protection ...125 Vac Open sens

- 39 -

- 4 - 3. PRODUCT OVERVIEW This manual covers LT Series DIN rail transmitters with isolated 4-20 mA and RS232/RS485 outputs, dual relay

- 40 - 22. WARRANTY Laurel Electronics Inc. warrants its products against defects in materials or workmanship for a period of one year from the dat

- 5 - 4. RECEIVING & UNPACKING YOUR TRANSMITTER Your transmitter was carefully tested and inspected prior to shipment. Should the transmitter b

- 6 - 6. TRANSMITTER FIELD WIRING SignalconditionerboardP3 Solidstate relaysP1 PowerinputP6 Signalinput &excitationoutputP2 Serialdata I/OP

- 7 - P6 - SIGNAL INPUT DETAIL2-Wire Process Transmitter+-Excitation return 1+ Excitation 2- Signal input 3+ Signal input 4DC & Exter

- 8 - 7. PROGRAMMING YOUR TRANSMITTER OVERVIEW Our transmitters are easily programmed using a PC with an RS232 port and Instrument Setup (IS) softw

- 9 - In the Establish Communications screen, select your Com Port and 9600 as the Baud Rate. You will be able to change your protocol and baud rate