Table of Contents
Related Manuals for LAUREL LTE Series
Summary of Contents for LAUREL LTE Series
- Page 1 LTE SERIES TRANSMITTERS Analog Input, Ethernet & Isolated 4-20 mA Outputs USER MANUAL LAUREL Electronics Inc. 3183-G Airway Ave, Costa Mesa, CA, 92626, USA Tel: (714) 434-6131 • Fax: (714) 434-3766 • Website: www.laurels.com...
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Page 2: Ordering Guide
1. ORDERING GUIDE Configure a model number in this format: LTE20DCV1 Transmitter Type RMS Volts Thermocouple Temperature RMV1 ...... 200.00 mV JC ....... -210 to 760°C LTE ..Ethernet isolated RMV2 ......2.0000 V JF ...... -347 to 1400°F 4-20 mA, outputs, two 120 mA RMV3 ...... -
Page 3: Table Of Contents
Input Signal Filtering ......................32 Transmitter Calibration...................... 33 Custom Curve Linearization ....................33 Modbus Protocol Transmitter Communications ............... 34 Custom ASCII Protocol Transmitter Communications ............39 Specifications, LTE Series Analog Input Transmitters ............44 Warranty ........................... 48 - 3 -... -
Page 4: Complementary Manuals
3. COMPLEMENTARY MANUALS This manual covers LTE Series DIN rail transmitters with isolated Ethernet and 4-20 mA outputs, It covers hardware aspects such a pinout and on- dual relays, and an analog input signal conditioner. board jumpers, and transmitter setup such as scaling and relay setpoints. It also presents the main commands and text strings to be used with the Modbus and Custom ASCII communications protocols. -
Page 5: Product Overview
4. PRODUCT OVERVIEW LTE Series transmitters duplicate the signal conditioning and signal processing features of their 1/8 DIN panel-mounted digital panel meter counterparts for exceptional accuracy at high read rates. A wide range of analog signal sources are accommodated by five analog signal conditioners, which are the same as for our panel meters: •... -
Page 6: Receiving & Unpacking Your Transmitter
5. RECEIVING & UNPACKING YOUR TRANSMITTER Your transmitter was carefully tested and inspected prior to shipment. Should the transmitter be damaged in shipment, notify the freight carrier immediately. In the event the transmitter is not configured as ordered or is inoperable, return it to the place of purchase for repair or replacement. Please include a detailed description of the problem. -
Page 7: Lte Transmitter Main Board Jumpers & Field Wiring
7. LTE TRANSMITTER MAIN BOARD JUMPERS & FIELD WIRING An RJ45 Ethernet connector allows the transmitter to be connected directly to a computer, router, switch or hub via an Ethernet cable. An isolated analog output and dual relays are also standard. Jumpers on the main board allow selection of the following: •... - Page 8 - 8 -...
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Page 9: Installing Instrument Setup (Is) Software
The Ethernet connector for all of our Ethernet Nodes is provided by an RJ45 jack, Green and amber LEDs on the jack indicate network operation: 1) Following power-up, the green and amber LEDs are on Amber LED steady until an IP address has been assigned to the Node. RX - 2) Once an IP address has been assigned to the Node, the amber LED is turned off. -
Page 10: Programming Your Transmitter
9. PROGRAMMING YOUR TRANSMITTER LAUNCHING INSTRUMENT SETUP SOFTWARE Connect your LTE transmitter to your PC via an Ethernet cable, or connect the transmitter to the same LAN as the PC. To launch IS software, press on Start => Programs => IS2 => Instrument Setup or on the desktop icon that you may have created. - Page 11 The Node Discovery tab under Node Setup will open once you have passed the Windows Firewall. With a direct cable connection to the PC, only one Ethernet Node will be listed. With a LAN connection, multiple Ethernet Nodes may be discovered on the same LAN. Select the Node which is integral with your transmitter Device.
- Page 12 Click on the Device Discovery tab, and all Devices attached to your Node will be listed. With an LTE transmitter, the transmitter will be the only Device listed. With a device server Node, there can be up to 30 Devices (meters and transmitters) on an RS485 bus. Please see our Ethernet manual.
- Page 13 Click on the Advanced Settings tab, and you will be given the opportunity to change the Node’s TCP and UDP Port settings. Press Get to retrieve settings from the Node to the PC. Press Put to write settings from the PC to the Node. If a browser is to access our Nodes on a remote LAN over the Internet, port forwarding must first be set up for the router that controls the remote LAN.
- Page 14 To reach the above Input+Display tab screen, follow this procedure: 1) Highlight your device under the Device Discovery tab. 2) Click on the Main Menu button. A new DPM Main Menu window will open with a help screen. 3) Click on DPM in the top menu bar. Our analog input transmitters and DPMs use the same software.
- Page 15 Click on the Scaling tab to scale your transmitter. You will be given the choice of three scaling methods: 1) Scale and Offset method, 2) Coordinates of 2 points method where (Low In, Low Read) and (High In, High Read) data points are entered numerically, and 3) Reading Coor- dinates of 2 points method, which captures actual readings.
- Page 16 Click on the Relay Alarms tab to set up your transmitter’s two solid state relays, which are standard. Press the F1 key for help with any highlighted item. Click on the Analog Out tab to scale your analog output, which is standard. Under Range, select 0-20 mA Current, 0-10V Voltage, or 4-20 mA.
- Page 17 PULL-DOWN MENU FEATURES • The File pull-down menu allows you to save setup files to disk by pressing on Save Setup and to open setup files from disk by pressing on Open Setup. Opened setup files can then be edited on the PC, be saved to disk, and be downloaded into Devices by using DPM =>...
- Page 18 Graph • The Jumpers pull-down menu shows jumper positions for the selected signal conditioner boards and the main board, duplicating information in this manual. - 18 -...
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Page 19: Opening Your Transmitter Case
10. OPENING YOUR TRANSMITTER CASE WHEN TO CHANGE JUMPERS Your transmitter case does not need to be opened if jumpers have already been set by your distributor. Otherwise you will need to open the case and either set jumpers or verify that the factory default jumpers positions will meet your needs. -
Page 20: Dc Signal Conditioner Board
11. DC SIGNAL CONDITIONER BOARD The DC volts, DC amps and process transmitters utilize the DC signal conditioner board, which needs to be configured via jumpers for the desired voltage or current range. All signal ranges are factory calibrated with calibration factors stored in EEPROM on the signal conditioner board. - Page 21 For use with potentiometers, where excitation and signal share the same ground, select 5V (not 10V) excitation, set Mode to Ratio, and set Range to 0.2V. Again, the meter will use the excitation voltage as the reference for A-to-D conversion. Often used for length measurement. Example: Transmit the digital reading in amps and as 4-20 mA from a 500-100 current shunt Application: Use a 500-100 (500A, 100 mV) current shunt.
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Page 22: Ac Rms Signal Conditioner Board
12. AC RMS SIGNAL CONDITIONER BOARD Five RMS voltage and four RMS current ranges are jumper selectable, as is AC or DC coupling. All signal ranges are factory calibrated with calibration factors stored in EEPROM on the signal condi- tioner board. Instrument Setup Software recognizes the board and brings up the appropriate menu items for it;... - Page 23 Example: Transmit the digital reading in amps and as 4-20 mA from an AC current transformer Application: Use a 200:5 (200A in, 5A out) AC current transformer. Digitally transmit the AC current reading in amps with 0.1A resolution. Also transmit a 4-20 mA signal corresponding to 0-100A.
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Page 24: Load Cell Signal Conditioner Board
13. LOAD CELL SIGNAL CONDITIONER BOARD The load cell signal conditioner board offers sensitivity to ±20 mV full-scale and 4 or 6-wire load cell connection. This board needs to be configured via jumpers for the desired full-scale voltage range. All ranges are factory calibrated with calibration factors stored in EEPROM. Instrument Setup Software recognizes the board and will bring up the appropriate menu items for it;... - Page 25 Example: Transmit weight in decimal tons and as 4-20 mA with overweight alarming Application: Digitally transmit weight in metric tons with 3 decimal places using a 3 mV/V load cell. Also output weight from 0 to 5.000 tons as a 0-10V signal. Apply 10V excitation. At a load of 5.000 tons, the load cell output will be 30 mV.
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Page 26: Thermocouple Signal Conditioner Board
14. THERMOCOUPLE SIGNAL CONDITIONER BOARD The thermocouple signal conditioner board can be configured via jumpers for either type J, K, E, N thermocouples or type T, R, S thermocouples, and for upscale or downscale open sensor indication. Instrument Setup Software recognizes the thermocouple board and will bring up the appropriate menu items for it;... - Page 27 Example: Transmit temperature, control a chiller, and provide an over-temperature alarm. Application: Transmit temperature of a fermentation tank as a 4-20 mA signal from 15°C to 35°C. Turn on a chiller when the temperature reaches 28°C. Turn off the chiller when the tem- perature is below 24°C.
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Page 28: Rtd & Ohms Signal Conditioner Board
15. RTD & OHMS SIGNAL CONDITIONER BOARD The same signal conditioner board can be configured via jumpers for four RTD types (DIN 100Ω platinum, ANSI 100Ω platinum, 120Ω nickel, 10Ω copper) or for five resistance ranges (from 20.000ΩΩ to 200.00 kΩ). Fixed 2Ω or 2 MΩ resistance ranges can be provided by a factory modified signal conditioner board. - Page 29 Example: Control incubator temperature, alarm over-temperatures, record on chart recorder Application: Using an ANSI Platinum RTD as the sensor, control a heater to maintain the tem- perature of an incubator at 99.0±0.5°F. Use 4-wire connection. Output temperature to an analog chart recorder so that 0V = 95°F and 10V = 105°F.
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Page 30: Dual Relay Operation
16. DUAL RELAY OPERATION Dual AC/DC solid state relays rated 120 mA are standard for alarm or setpoint control and are independently set up via the “Relay Alarms” tab of Instrument Setup Software. For online help with any data entry field, press the F1 key. •... - Page 31 • Deviation. A positive number that can be added or subtracted from the setpoint, depending on the Deviation Type, to determine when an alarm becomes Active or Inactive. • Alarm Source. Depending on the Signal Input Mode and Function selected under the Input+ Display tab, the alarm can be assigned to any of up to three Items, for example to Item 1 (A rate / B rate), Item 2 (A rate), or Item 3 (B rate).
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Page 32: Input Signal Filtering
• Alarm Type. Selections are Non-Latching and Latching. Under Non-Latching, the relay is only closed (or open) while the Alarm State is Active. Under Latching, the activated relay remains closed (or opens) until reset regardless of the Alarm State. Resetting is normally achieved by temporarily grounding one of the transmitter’s control inputs, which has been set to Function Reset under the “Input+Display”... -
Page 33: Transmitter Calibration
18. TRANSMITTER CALIBRATION All analog input and analog output ranges of the transmitter have been digitally calibrated at the factory prior to shipment using calibration equipment certified to NIST standards. Calibration constants are stored digitally in non-volatile memory in EEPROM on the signal conditioner board and main board. -
Page 34: Modbus Protocol Transmitter Communications
20. MODBUS PROTOCOL TRANSMITTER COMMUNICATIONS 1.0 GENERAL The Modbus capability conforms to the Modbus over Serial Line Specification & Implemen- tation guide, V1.0. Both the Modbus RTU and Modbus ASCII protocols are implemented. This 5-page manual section presents key programmable Modbus features. Our detailed Modbus manual can be downloaded from http://www.laurels.com/downloadfiles/modbus.pdf Modbus RTU Baud Rate ... - Page 35 4.0 SUPPORTED FUNCTION CODES FC03: Read Holding Registers Reads internal registers containing setup parameters (Scale, Offset, Setpoints, etc.) FC10: Write Multiple Registers (FC10 = 16 dec) Writes internal registers containing setup parameters (Scale, Offset, Setpoints, etc.) FC04: Read Input Registers Reads measurement values and alarm status.
- Page 36 Hex Sub Data Response Function Description Send Data Code 00 00 Same Returns Query Data (N x 2 bytes). Echo Request. as sent 00 01 Restarts Communications. If in the Listen-Only mode, no response occurs. Takes Slave out of the Listen-Only mode and one of the following: FF 00 FF 00...
- Page 37 5.0 SUPPORTED EXCEPTION RESPONSE CODES Code Name Error Description ---- -------------------- ------------------------------------------------------ Illegal Function Illegal Function Code for this Slave. Only hex Function Codes 03, 04, 05, 08, 10 (dec 16) are allowed. Illegal Data Address Illegal Register Address for this Slave. Illegal Data Value Illegal data value or data length for the Modbus protocol.
- Page 38 Modbus ASCII Format Byte Number Action Request Response Request Response Request Response Request Response Request LRC CR Response Exception EC LRC CR Response DD* = (DD DD) times NR (Number of Registers) 7.0 MESSAGE EXAMPLES All examples are for Transmitter Address = 01 and No Parity. Modbus RTU Modbus ASCII Ser_4 ->...
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Page 39: Custom Ascii Protocol Transmitter Communications
21. CUSTOM ASCII PROTOCOL TRANSMITTER COMMUNICATIONS SERIAL COMMUNICATION FORMAT Mode ....Full Duplex (Separate transmit and receive lines) and Half Duplex (RS485 only) Baud Rate ..300, 600, 1200, 2400, 4800, 9600, 19200 selectable with Instrument Setup software. Parity ....None Word length .. - Page 40 listing and analysis, or when data is supplied to a Remote Display in a Master-Slave confi- guration. Values are transmitted in a continuous string with no intervening spaces. If the 5th digit in is set to 1 using Instrument Setup software, the termination characters of <CR> and optional <LF>...
- Page 41 All commands begin with “*” followed by the meter address, then a command letter followed by a sub-command number or letter. Additional characters may be append- ed. All commands terminate with <CR> (<LF> ignored). Char # Character Description Command Identifier. Recognition Character. Device Address.
- Page 42 Reset Functions, DPM Transmitter Cold reset *1C0 Reads NVMEM into RAM locations after RAM is zeroed. Latched alarms reset *1C2 Peak value reset *1C3 Remote display reset *1C4 Valley reset *1C9 Tare function *1CA Tare reset *1CB READING AND WRITING TO RAM AND NONVOLATILE MEMORY CHAR 1, 2: The Recognition character and Meter Address Code are the same as shown in previous table.
- Page 43 General, Reading and Writing Ram Memory Data RAM memory data is read and written as a continuous string of bytes consisting of 2 hex characters (0-9,A-F) per byte. Included in the command are the total number of bytes to be transferred and the most significant address in RAM of the continuous string of bytes.
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Page 44: Specifications, Lte Series Analog Input Transmitters
22. SPECIFICATIONS, LTE SERIES ANALOG INPUT TRANSMITTERS Mechanical Case dimensions ..................120 x 101 x 22.5 mm Case mounting ................35 mm DIN rail per EN 50022 Electrical connections ............. Detachable screw plug connectors Environmental Operating temperature ....................0°C to 55°C Storage temperature .................... - Page 45 Input Signal Noise Rejection CMV, DC to 60 Hz ......................250V RMS CMR, DC to 60 Hz ......................130 dB NMR at 50/60 Hz ................90 dB with no digital filtering Input filtering ........Programmable digital time constants from 80 ms to 9.6 s Overvoltage Protection Voltage input ranges of 2V and above (AC or DC) ............
- Page 46 Load Cell, Strain Gauge & Microvolt Input Range 1 Count Input Resistance Input Error ±20.000 mV 1 µV 0.01% of full scale ± 2 counts ±50.000 mV 1 µV for absolute voltage readings ±100.00 mV 10 µV 1 GΩ 0.01% of reading ± 2 counts ±250.00 mV 10 µV for ratiometric bridge readings...
- Page 47 Type Range Conformity Error -210 to 760°C 0.09°C -347to 1400°F 0.16°F -244 to 1372°C 0.10°C -408to 2501°F 0.17°F 0 to 400°C 0.03°C -257 to 0°C 0.20°C 32 to 752°F 0.05°F -430 to 32°F 0.36°F -240 to 1000°C 0.18°C -400 to 1830°F 0.32°F -245 to 1300°C 0.10°C...
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Page 48: Warranty
In the event of a defect during the warranty period, the defective unit may be returned to the seller, which may be Laurel or a Laurel distributor. The seller may then repair or replace the defective unit at its option. In the event of such a return, freight charges from the buyer shall be paid by the buyer, and freight charges from the seller shall be paid by the seller.