Summary of Contents for TEKTROL TEK-LCD 7801C Series
- Page 1 Technology Solutions CD 7801C NEMA 4X Panel Mount Multi-Channel Controller Instruction Manual Document Number: IM-7801C www.tek-trol.com...
- Page 2 www.tek-trol.com NOTICE Read this manual before working with the product. For personal and system safety, and for optimum product performance, make sure you thoroughly understand the contents before installing, using, or maintaining this product. For technical assistance, contact Customer Support 796 Tek-Drive Crystal Lake, IL 60014 Tel: +1 847 857 6076...
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Page 3: Table Of Contents
Instruction Manual Tek-LCD 7801C Technology Solutions Table of Contents Safety Instructions ........................5 Intended Use ...........................5 Certifications ...........................5 Safety Instructions from the Manufacturer ..................5 1.3.1 Disclaimer ............................5 1.3.2 Product Liability and Warranty ......................5 1.3.3 Information Concerning the Documentation ..................5 Safety Precautions ...........................5 Packaging, Transportation and Storage ....................6 1.5.1 Packaging .............................6... - Page 4 Instruction Manual Tek-LCD 7801C Technology Solutions 4.2.11 Switching Inductive Loads ........................ 24 4.2.12 RC Networks Available from Tek-Trol ....................25 4.2.13 Serial Communication Connections ....................25 4.2.14 Ethernet Option ..........................25 4.2.15 External Keypad Connections ......................25 Configuration .......................... 26 Software Installation ........................
- Page 5 Instruction Manual Tek-LCD 7801C Technology Solutions 6.37 Setup 4-20 mA Inputs........................58 6.38 Setup Pulse Inputs ......................... 59 6.39 Setup Digital Inputs ........................60 6.39.1 Digital Input Functions ........................60 6.40 Modbus Functionality ........................61 6.41 Setup Modbus Inputs (Server) ......................61 6.42 Setup Modbus Inputs (Client) ......................
- Page 6 Instruction Manual Tek-LCD 7801C Technology Solutions 8.8.1 View mA Outputs ..........................92 8.8.2 Manual Control of 4-20 mA Output ....................92 View Relays ........................... 93 8.9.1 View Alert Messages ........................94 8.10 View Digital Outputs ........................95 8.11 View Modbus Outputs ........................95 8.12 View Screens ..........................
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Page 7: Safety Instructions
Instruction Manual Tek-LCD 7801C Technology Solutions 1 Safety Instructions 1.1 Intended Use Tek-LCD 7801C NEMA 4X Panel Mount Multi-Channel Controller is easy to use and satisfies a wide variety of process display, alarm, and control applications. 1.2 Certifications CE Approvals. 1.3 Safety Instructions from the Manufacturer 1.3.1 Disclaimer The manufacturer will not be held accountable for any damage that happens by using its product,... -
Page 8: Packaging, Transportation And Storage
Instruction Manual Tek-LCD 7801C Technology Solutions Indicates a potentially hazardous situation which, if not avoided, could result in death or severe injury CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. NOTE Indicates that operating the hardware or software in this manner may damage it or lead to system failure. -
Page 9: Product Description
Instruction Manual Tek-LCD 7801C Technology Solutions NOTE Check the device nameplate to ensure that the device is delivered according to your order. Check for the correct supply voltage printed on the nameplate. 2 Product Description 2.1 Introduction Tek-LCD 7801C NEMA 4X Panel Mount Multi-Channel Controller is both easy to use and satisfies a wide variety of process display, alarm, and control applications. -
Page 10: Specifications
Instruction Manual Tek-LCD 7801C Technology Solutions 2.2 Specifications Note: All specifications apply to operation at 77°F (25°C) Color; QVGA (320x240 px), 5.7" (145 mm) diagonally, white backlight; Bar Graph: Twenty divisions; Numerical: Up to 15 digits Display (±999,999,999,999,999); Feet & Inches Format: 99,999' 11.9" Enable/disable: Channels, totals, timers;... - Page 11 Instruction Manual Tek-LCD 7801C Technology Solutions Programmable password restricts modification of programmed settings. Password View and Setup menus are password protected, function keys and digital inputs are not protected. Inputs, channels, totals, timers, and alarms can be simulated from Simulation Mode the View menu or from a function key Analog outputs and relays can be controlled manually from the Manual Control...
- Page 12 Instruction Manual Tek-LCD 7801C Technology Solutions Total can be setup to be non-resettable to prevent unintentional Non-Resettable Total reset. This can be changed in the Setup Totals menu. Input: Rate channel; Total units can be different than rate units. Total Units Conversion Use the custom units to convert to any unit (e.g.
- Page 13 Instruction Manual Tek-LCD 7801C Technology Solutions Output 4 to 20mA Output Loop Power Powered by controller or externally by 12 to 32 VDC Powered by controller: 10 to 600 Ω External 12 VDC: 10 to 200 Ω Output Loop Resistance External 24 VDC: 10 to 600 Ω...
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Page 14: Dimensional Drawings
Instruction Manual Tek-LCD 7801C Technology Solutions 2.3 Dimensional Drawings 6 1⁄4” 10 3⁄4” (157mm) (276mm 61⁄4” (157mm) 10 3⁄4” (276mm) Fig 2: Front Panel Mount 10 1⁄4” (254mm) 10 1⁄4” (254mm) R=1⁄2” (14.5mm) Fig 3: Panel Cutout 10¾” (276mm) 4 ¾” (124mm) ¾”... -
Page 15: Popular Models
Instruction Manual Tek-LCD 7801C Technology Solutions 2.4 Popular Models General Purpose Panel-Mount Models 4-20 mA 4-20 mA Model Pulse Inputs Relays Inputs Outputs 7801C-GP 7801C-GP-4AI 7801C-GP-4AI-10RY 7801C-GP-4AI-5AO-10RY 7801C-GP-4AI-20RY 7801C-GP-4AI-5AO-20RY 7801C-GP-8AI 7801C-GP-8AI-10RY 7801C-GP-8AI-10AO-10RY 7801C-GP-8AI-20RY 7801C-GP-8AI-25RY 7801C-GP-12AI 7801C-GP-12AI-20RY 7801C-GP-12AI-10AO-10RY 7801C-GP-16AI 7801C-GP-16AI-15RY 7801C-GP-16AI-15AO 7801C-GP-20AI 7801C-GP-20AI-10RY 7801C-GP-20AI-10AO... - Page 16 Instruction Manual Tek-LCD 7801C Technology Solutions Model Description Add-On Feature: NEMA 4X Panel Mount Multi-Channel Controller + 7801C-M1 Modbus Client/Snooper/Spoofer (4) Isolated 4-20 mA Inputs Card for NEMA 4X Panel Mount Multi-Channel 7801C-C4AI Controller 7801C-C4PI (4) Pulse Inputs Card for NEMA 4X Panel Mount Multi-Channel Controller (5) Isolated 4-20 mA Outputs Card for NEMA 4X Panel Mount Multi- 7801C-C5AO Channel Controller...
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Page 17: Accessories
Instruction Manual Tek-LCD 7801C Technology Solutions 2.5 Accessories 2.5.1 Light or Horn Accessories Model Description 7801C-LHRB1 Red Light / Horn and Button with Holes Drilled in Enclosure(1) 7801C-LHGB1 Green Light / Horn and Button with Holes Drilled in Enclosure(1) 7801C-LHYB1 Yellow Light / Horn and Button with Holes Drilled in Enclosure(1) 7801C-LHBB1 Blue Light / Horn and Button with Holes Drilled in Enclosure(1) -
Page 18: 7801C-Sh Sun Hood
Instruction Manual Tek-LCD 7801C Technology Solutions 2.5.3 7801C-SH Sun Hood Model Description 7801C-SH 7801C Sun Hood 2.5.4 7801C-2360 Control Stations Model Description 7801C2360-E Emergency Stop Button 7801C2361-A 1 Black Ack Button 7801C2361-Q 1 Black Silence Button 2.5.5 Signal Splitter & Conditioner Accessories Model Description Signal Isolator with One 4-20 mA Input and... -
Page 19: Panel Mount Buzzer And Light
Instruction Manual Tek-LCD 7801C Technology Solutions 2.5.7 Panel Mount Buzzer and Light Model Description 7801C-1000 Panel Mount Buzzer and Light 2.5.8 Snubber 0.01μF/470Ω Flexible Leads Model Description Snubber 0.01μF/470Ω Flexible 7801C-6901 Leads 2.5.9 Low-Cost Signal Generator Model Description 4-20 mA or 0-10 VDC, Low-Cost 7801C-9502 Signal Generator 2.5.10 7801C-ENC NEMA 4X Plastic and NEMA 4 Steel Enclosures... -
Page 20: Installation
Instruction Manual Tek-LCD 7801C Technology Solutions • NEMA 4 Steel Enclosures 7801-2909 7801-2919 7801-2929 3 Installation This section covers instructions on installation and commissioning. Installation of the device must be carried out by qualified trained, specialists authorized to perform such works. CAUTION •... -
Page 21: Electrical Connections
Instruction Manual Tek-LCD 7801C Technology Solutions • Prepare panel cutout as per the dimensions provided. • Locate the panel mounting bracket and screws. • Inspect the controller to assure the gasket is securely in place. • Insert controller in the panel cutout, the latches on the top and bottom should hold it in place. -
Page 22: Power Connection
Instruction Manual Tek-LCD 7801C Technology Solutions • The back panel is labelled with the I/O boards that were installed at the factory. • The removable connectors are labelled with the connection signal for each terminal. • Figure 6 shows terminal connections of Tek-LCD 7801C. •... -
Page 23: Isolated Input Signal Connections
Instruction Manual Tek-LCD 7801C Technology Solutions DC Power 24 V DC - DC + AC Power 90-264 V 47-63 Hz Earth Gnd AC Neutral AC Line Fig 7: Power Connection 4.2.3 Isolated Input Signal Connections • Isolated input signal connections are made to removable screw terminal connectors, which are labelled individually on the back panel of the controller. -
Page 24: Flow Meter Pulse Input Connections
Instruction Manual Tek-LCD 7801C Technology Solutions Analog Input mA- mA+ 24V Signal - Signal + Power + External 3-Wire 4-20 mA Power Supply Transmitter Fig 10: 3-Wire Transmitters Powered Externally 4.2.5 Flow Meter Pulse Input Connections • Flow Meter Pulse Inputs are wired to four-terminal connectors (two inputs per connector). •... -
Page 25: Analog Output Connections
Instruction Manual Tek-LCD 7801C Technology Solutions 4.2.7 Analog Output Connections • Figure 13 shows examples for isolated 4-20 mA transmitter output connections. Terminal connectors are labelled individually. • The analog outputs are isolated from each other and from the inputs. They are powered internally to provide an active 4-20 mA output loop. -
Page 26: Connections To Power Gas Detector
Instruction Manual Tek-LCD 7801C Technology Solutions 4.2.9 Connections to Power Gas Detector Some sensors requiring more than 200mA of excitation current can be powered by the Tek-LCD 7801C by connecting two or more power supplies in parallel as shown in the following diagrams. Fig 16: Two Supplies in Parallel Powering 3- Fig 17: Powering 4-Wire Gas Detector &... -
Page 27: Rc Networks Available From Tek-Trol
Instruction Manual Tek-LCD 7801C Technology Solutions Use diode with a reverse breakdown voltage two to three times the circuit voltage and forward current at least as large as the load current. Fig 20: Low Voltage DC Loads Protection 4.2.12 RC Networks Available from Tek-Trol RC networks are available from Tek-Trol and should be applied to each relay contact switching an inductive load. -
Page 28: Configuration
Instruction Manual Tek-LCD 7801C Technology Solutions Digital Inputs External Keypad Fig 22: External Keypad Connections 5 Configuration 5.1 Software Installation We recommend the following sequence for getting the controller into service: 1. Download the latest version of the Tek-LCD 7801C configuration software from our website predig.com/software or from the included CD. - Page 29 Instruction Manual Tek-LCD 7801C Technology Solutions 5. The User Account Control message is displayed. Click Yes to proceed with the installation. 6. The installation progress is displayed. 7. Read and accept the End-User License Agreement and click Install to proceed. www.tek-trol.com...
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Page 30: Tek-Lcd 7801C Software
Instruction Manual Tek-LCD 7801C Technology Solutions 8. After the software installation is complete, click the Finish button. 9. After the installation is complete, the following message is displayed. Click Close to finish. A Tek-LCD 7801C icon will be placed on your desktop. 10. -
Page 31: Setup And Programming
Instruction Manual Tek-LCD 7801C Technology Solutions 3. The application will start displaying the System menu and the connection status. 4. Click on Read, at the bottom or top of the screen, to read the configuration of the connected controller. After a read the channels, settings overview is displayed. 5. - Page 32 Instruction Manual Tek-LCD 7801C Technology Solutions Screen Navigation Menu Navigation • Selections are highlighted with green background for illustration purposes. • The keys shown in table 1 are used to navigate through menus and edit settings. • Other special keys appear throughout the programming process. Table 1: Key and its Description Action Menu...
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Page 33: Basic Instructions
Instruction Manual Tek-LCD 7801C Technology Solutions 6.2 Basic Instructions NOTE • There is no need to recalibrate the instrument when first received from the factory. • Use the Scale function to set up the input channels to display your process in engineering units. -
Page 34: Setup Menu
Instruction Manual Tek-LCD 7801C Technology Solutions • The View screen view all the settings and values for Channels, Totals, Timers, etc. • Press the Setup key to program the instrument. 6.3 Setup Menu • The Setup menu is the starting point during the programming process. •... -
Page 35: Channel Parameter
Instruction Manual Tek-LCD 7801C Technology Solutions 6.4 Channel Parameter Channel tag: Editable Open Channel Flow Control Units: Engineering Auto-generated Parshall Flumes Sampler units / time or • • channel #: Use to re- none V-Notch Weirs On-Off Control •... -
Page 36: Data Entry Keypad
Instruction Manual Tek-LCD 7801C Technology Solutions 6.5 Data Entry Keypad The system provides a keypad for entering values and tags, which contains numbers, characters, and symbols. • Press Edit key to start editing the channel configuration. • The green background indicates the field to be edited. •... - Page 37 Instruction Manual Tek-LCD 7801C Technology Solutions • To enter symbols, press the three dots and select the desired symbol. • When done typing the characters in the selected field, press the Enter key. • To enter numbers, select the numeric keypad, move the cursor to the insertion point and enter the number using the keys.
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Page 38: Setup Channel
Instruction Manual Tek-LCD 7801C Technology Solutions • Press Enter to accept the changes. • Press the Save key to save the changes. The bar graph is automatically adjusted to reflect the scale entered. • The bar graph scaling can be changed without affecting the input scaling. 6.6 Setup Channel •... - Page 39 Instruction Manual Tek-LCD 7801C Technology Solutions • Press the Edit key to edit the channel tag and other settings. • Press the Up and Down arrow keys to select setting to be edited. • Select the function to be applied to the input and press the Ok key. •...
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Page 40: Bar Graph, Background And Text Colours
Instruction Manual Tek-LCD 7801C Technology Solutions *Note: The inputs shown depend on the installed hardware and the configuration. • Select the engineering units, decimal point, enter scale points and press the Ok key. • Select number of decimals, scale the input, enter the cut-off value, select colours for bar graph and text, confirm the bar graph’s scale, and press Save. - Page 41 Instruction Manual Tek-LCD 7801C Technology Solutions • Select a color pattern or press the Edit key to make changes to the colours’ tag, text, background, and bar graph. • Use the arrow keys to navigate the settings and press Edit to make changes. •...
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Page 42: Live Calibration
Instruction Manual Tek-LCD 7801C Technology Solutions • Select the desired color and press Ok. Navigate to the other settings and make the necessary changes. • Press Save to save the colour changes. • Press Select to apply the colour pattern to the channel. The Manage button is used to move or delete colours. -
Page 43: Edit Channel
Instruction Manual Tek-LCD 7801C Technology Solutions • Repeat the steps above for the additional inputs to be calibrated. • Adjust the output values according to the calibrated inputs. • Press Save. 6.10 Edit Channel • To edit a channel, press the Edit key and navigate to the setting you want to change, press Edit again and make the changes required. -
Page 44: Delete Channel
Instruction Manual Tek-LCD 7801C Technology Solutions 6.11 Delete Channel • To delete a channel, press the Delete key and follow the instructions. • Press the Ok key to delete the channel or the Cancel key to cancel delete action. 6.12 2-Point Linear Scaling •... -
Page 45: Square Root Scaling
Instruction Manual Tek-LCD 7801C Technology Solutions 6.13 Square Root Scaling • Square root mode refers to 2-point scaling with square root extraction typically used to linearize the signal from a differential pressure transmitter and display the flow rate in engineering units. •... -
Page 46: Round Horizontal Tank
Instruction Manual Tek-LCD 7801C Technology Solutions 6.15 Round Horizontal Tank • The Round Horizontal Tank (RHT) function calculates the volume of round tank with flat ends, based on the diameter and length dimensions of the tank. • The input source for the channel calculating the volume must be a level channel with units of distance (height). -
Page 47: Specific Weir Or Flume Function
Instruction Manual Tek-LCD 7801C Technology Solutions Table 2: Programmable Exponent for Open Channel Flow Function Desire Programming Use Scale Exponent Function; Set Open Channel Flow 3" Parshall flume exponent to 1.547 Set 4 mA: 0; Set 20 mA: 3.508; Millions of Gallons per Day Flow Rate 1 Custom unit: MG;... -
Page 48: Setup Math Function
Instruction Manual Tek-LCD 7801C Technology Solutions Program controller so Total 2 Input: Flow Rate 1 total 2 can never be Non-Resettable Set total 2 as non-resettable total reset Display flow rate, Set a screen to display rate, total 1, total Screen totals, and relay status 2, and relay status. -
Page 49: Random Varying On-Off Control
Instruction Manual Tek-LCD 7801C Technology Solutions • Enter the input sources for the math function, select the units and number of decimals, and press Ok and Save. • Additional Functions: Scale, Open Channel Flow, Compare, Measure, Filter, Control, Relays and Modbus. -
Page 50: Open Channel Flow
Instruction Manual Tek-LCD 7801C Technology Solutions • After creating the On-Of Control with Randomizer channel, assign this channel as the input for the relay controlling the pump. 6.19 Open Channel Flow • The built-in math formulas in the Tek-LCD 7801C makes the setup of open channel flow applications an easy task. -
Page 51: Setup Totalizer Based On Flow Rate
Instruction Manual Tek-LCD 7801C Technology Solutions 6.20 Setup Totalizer Based on Flow Rate 6.21 Setup Screen to Monitor Open Channel Flow www.tek-trol.com... -
Page 52: Setup Totalizer
Instruction Manual Tek-LCD 7801C Technology Solutions 6.22 Setup Totalizer • The totalizers are setup the same way as the channels. • The rate from an analog or pulse input channel is integrated over the specified time unit to generate an accumulated total that can be configured to count up or count down. •... -
Page 53: Setup Total With Pulse Input Source
Instruction Manual Tek-LCD 7801C Technology Solutions 6.24 Setup Total with Pulse Input Source • Pulse inputs can be totalized directly without the need to create a rate channel. • Select the units and enter the K-Factor provided by the flow meter manufacturer. 6.25 Setup Accumulated Total (Triggered) •... -
Page 54: Setup Previous Total
Instruction Manual Tek-LCD 7801C Technology Solutions • The Totalizer mode can be used to add the input total to the new total when a trigger is activated. The trigger can be a digital input, a Modbus input, or any event selected. 6.26 Setup Previous Total •... -
Page 55: Setup Daily Total
Instruction Manual Tek-LCD 7801C Technology Solutions 6.27 Setup Daily Total • The daily total is automatically reset every day at midnight. • The daily total can be the input to a previous total to save the previous day total. Link previous daily totals to maintain a history of daily totals. -
Page 56: Setup Timers
Instruction Manual Tek-LCD 7801C Technology Solutions 6.29 Setup Timers • Up to 32 timers can be setup to control and monitor various processes. • The timers can be triggered by any input or output, such as an analog input rising above a certain threshold or a digital input going from low to high. -
Page 57: Setup Alarms
Instruction Manual Tek-LCD 7801C Technology Solutions • Timer Function Keys & Digital Inputs The function keys and digital inputs can be used to start, stop, and reset the timers, regardless of the automatic actions selected. • Time Format The time format is hh:mm:ss with 0 decimals selected. If decimal is other than 0, the time is displayed in seconds with the number of decimals selected. - Page 58 Instruction Manual Tek-LCD 7801C Technology Solutions • Automatic only: Alarm resets automatically at the reset point. www.tek-trol.com...
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Page 59: Logic Or Alarm
Instruction Manual Tek-LCD 7801C Technology Solutions 6.32 Logic OR Alarm • The inputs for the logic OR alarm are any existing alarms, regardless of the source or type. • Any active alarm in the group triggers the OR alarm. • The OR alarm can be used as a summary alarm. 6.33 Logic AND Alarm The inputs for the logic AND alarm are any existing alarm, regardless of the source or type. -
Page 60: Day & Time Alarms
Instruction Manual Tek-LCD 7801C Technology Solutions 6.35 Day & Time Alarms The Day & Time alarm uses the system clock. You can choose to alarm every day, weekdays, or any day of the week at a selected time. Choose how long the alarm should stay on and if manual acknowledge is allowed. -
Page 61: Setup Pulse Inputs
Instruction Manual Tek-LCD 7801C Technology Solutions • The top line, for each input, shows the slot # and input location (2b = slot #2, second input from the left). It also shows the actual current input. • The next line shows the input type and # (AI-2) with the default tag, which can be changed at any time. -
Page 62: Setup Digital Inputs
Instruction Manual Tek-LCD 7801C Technology Solutions 6.39 Setup Digital Inputs • The digital inputs can be assigned to perform various user functions, such as trigger alarm, acknowledge alarms, reset total, etc. • Pulse inputs can be used as digital inputs by setting them up according to the type of input they are intended to accept. -
Page 63: Modbus Functionality
Instruction Manual Tek-LCD 7801C Technology Solutions • The available functions depend on the I/O cards installed and the controller’s configuration. • Alarm Reset: The alarm condition is cleared, allowing the alarm to trigger again based on input. • Acknowledge: The input must cross the reset point to trigger new alarm after it has been acknowledged. -
Page 64: Setup Modbus Inputs (Client)
Instruction Manual Tek-LCD 7801C Technology Solutions • Data Types o Bit – Logic (Coil) o Signed/Unsigned 16 (Short), 32 (Long), 64 (Long Long) o Float 32, Float 64 (Double) 6.42 Setup Modbus Inputs (Client) The Modbus Client mode is an option in the Tek-LCD 7801C. It can be purchased at the time the order is placed or it can be purchased and enabled at any time. -
Page 65: Setup Modbus Inputs (Snooper)
Instruction Manual Tek-LCD 7801C Technology Solutions • Data Types o Bit – Logic (Coil) o Signed/Unsigned 16 (Short) o 32 (Long), 64 (Long Long) o Float 32, Float 64 (Double) *Note: Make sure to set up the controller as a Modbus Client and configure the serial communication settings before trying to set up the Modbus Client inputs. -
Page 66: Setup All Outputs
Instruction Manual Tek-LCD 7801C Technology Solutions *Note: Make sure to set up the controller as a Modbus Server/Snooper and configure the serial communication settings before trying to set up the Modbus Snooper inputs. See Modbus Snooper Settings, page 70 for details. 6.44 Setup All Outputs The Setup Outputs screen is used to configure the hardware outputs, assigning a user-defined tag, scaling the mA outputs, associating relays with alarms, and configuring the digital outputs. -
Page 67: Setup Relay Output
Instruction Manual Tek-LCD 7801C Technology Solutions 6.46 Setup Relay Output • The relays can be driven by alarms, digital inputs, Modbus inputs, channels, totals, and timers. If the input source is a channel, set and reset points must be entered. These are the available settings depending on the source selected. -
Page 68: Relay Assigned To Channel
Instruction Manual Tek-LCD 7801C Technology Solutions 6.48 Relay Assigned to Channel Relays not assigned to alarms are used for automatic on/off control based on set & reset point; they cannot be acknowledged. 6.49 Pump Alternation Relays To setup a group of relays for pump alternation control, follow these steps. 1. -
Page 69: Setup Digital Output
Instruction Manual Tek-LCD 7801C Technology Solutions • Alternation Input Sources Most level control applications use channels as the input. The channel is setup to read the signal from a level transmitter and display the level either in height or volume units. The continuous level monitoring allows for selecting multiple alternation points. -
Page 70: Setup Modbus Output (Server)
Instruction Manual Tek-LCD 7801C Technology Solutions 6.51 Setup Modbus Output (Server) • The Modbus output is a standard Tek-LCD 7801C feature; this is additional to the predetermined Modbus table provided, see Modbus Register Tables. • The Modbus Output menu allows assigning up to 99 Modbus register sets (1 to 4) to output any of the values available in the system (e.g. -
Page 71: Setup Modbus Output (Client)
Instruction Manual Tek-LCD 7801C Technology Solutions 6.52 Setup Modbus Output (Client) • The Modbus outputs from a Tek-LCD 7801C Client can be written to Modbus servers or they can be read using the Ethernet TCP/IP port. The outputs are posted periodically on a schedule or on demand by triggering a user function (e.g., F1 function: Output (Post) - MO-1). -
Page 72: Setup Modbus Output (Spoofer)
Instruction Manual Tek-LCD 7801C Technology Solutions • The data type must match the type required by the server device; otherwise, the value will not be correct. o Server ID o Register Address (Base 0) o Select Enron, if applicable o Function Code o Data Type –... -
Page 73: Setup Screens
Instruction Manual Tek-LCD 7801C Technology Solutions • Select the data type. • Enron protocol and Float 64 data type selected. • Every time the Modbus output is read by the client, the Total 1 is reset. 6.54 Setup Screens The Setup Screens menu is used to setup the screens that will be displayed during operation and to setup the actions assigned to the function keys F1-F4. -
Page 74: Setup Function Keys
Instruction Manual Tek-LCD 7801C Technology Solutions o Show Channel #: Select to display the channel # o Show Bar Graphs: Select to display the bar graphs o Bar Graph Only: Select to display only the bar graphs o Auto Scan: Select to scan the screens automatically o Dwell Time: Number of seconds the screen is displayed before moving to the next screen o F1 –... -
Page 75: Setup Display
Instruction Manual Tek-LCD 7801C Technology Solutions 6.56.1 Setup Display The System Display menu is used to adjust the display settings, setup colours for parameters, bar graphs, and alarms. 6.56.1.1 Display Setting The Display Settings menu is used to adjust the backlight brightness, refresh rate and to enable or disable the display of commas for all numeric values. -
Page 76: General Setting
Instruction Manual Tek-LCD 7801C Technology Solutions 6.57 General Setting The General Settings menu contains the settings listed below. • Device Tag: Edit the device tag (saved on Enter) • Device UID: Device unique ID • System Info: Firmware number and version •... -
Page 77: Set Password
Instruction Manual Tek-LCD 7801C Technology Solutions 6.58 Set Password CAUTION The function keys and the digital inputs are not password protected. The user may enter a 4-digit password to protect the system from unintentional changes. • Password Protected Controller o The correct 4-digit password is required to make changes to the system. o If the password is not correct after 3 attempts, the system will not allow new tries until a timeout elapses. -
Page 78: System Date & Time
Instruction Manual Tek-LCD 7801C Technology Solutions • Remove Password Protection To remove the password protection: a. Enter the correct password b. Go to the System menu – General Settings c. Navigate to the Clear Password button d. Press the Clr Pwd key 6.59 System Date &... -
Page 79: Modbus Server Settings
Instruction Manual Tek-LCD 7801C Technology Solutions 6.61 Modbus Server Settings The Modbus Server settings must match the settings of other devices on the bus. The Modbus ID must be unique for each device on the bus. • Modbus Write Protection Select Passcode and enter a Modbus passcode between 0 and 9999 to prevent unauthorized writes to the controller. -
Page 80: Ethernet Settings
Instruction Manual Tek-LCD 7801C Technology Solutions *Note: The Modbus passcode is different than the main password used to protect access to the Setup and View menus. 6.64 Ethernet Settings • The Ethernet menu provides basic information about the Ethernet port and allows the user to program a static IP Address, the port number, and the protocol to be used. -
Page 81: Custom Units
Instruction Manual Tek-LCD 7801C Technology Solutions 6.66 Custom Units Custom units can be created either in the System menu or when a parameter is created in the Setup - Channels menu. Follow these steps to create a custom unit: o Go to the System menu – Custom Units o Select New o Enter a label for the unit (8 characters max) o Select the unit type or None... -
Page 82: Ethernet Full Port Setup
Instruction Manual Tek-LCD 7801C Technology Solutions 7 Ethernet Full Port Setup CAUTION Consult with your IT department to configure the Ethernet port and maintain network security. The Ethernet port option is fully configured using the Tek-Trol DeviceInstaller software, available for download from the Tek-Trol’s Website. https://www.Tek-Trol.com/products/xport Follow these steps, after installation of the DeviceInstaller software. - Page 83 Instruction Manual Tek-LCD 7801C Technology Solutions 6. Click on Configuration Records to find these settings, see the example above. IP Address: 192.168.5.32; Local TCP Port: 10001 (0x2711). 7. Click on Web Configuration. 8. Click on Network to assign a new IP Address. www.tek-trol.com...
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Page 84: Test Ethernet Communication
Instruction Manual Tek-LCD 7801C Technology Solutions 9. Click on Channel 1 – Connection to select the protocol: TCP or UDP. Note: For UDP protocol, select Datagram Type: 01 10. Under Endpoint Configuration, enter the Local Port to be used to access the controller locally or from a remote location. -
Page 85: View Channel Details
Instruction Manual Tek-LCD 7801C Technology Solutions • Press the Right Arrow key again to step into viewing the channel details. 8.1 View Channel Details • Stepping into a channel allows the viewing of additional details for the inputs and outputs associated with that channel. -
Page 86: View Alarm Details
Instruction Manual Tek-LCD 7801C Technology Solutions 8.3 View Alarm Details • Press the 3-Bar key to access the available options. • Alarm view options: acknowledge alarm, reset alarm, change set/reset points, and simulate an alarm condition. 8.4 View Totals • The View Totals menu displays the value of all the totals and allows resetting each total individually. - Page 87 Instruction Manual Tek-LCD 7801C Technology Solutions • Press the Right Arrow key to select Total 1. • Press the 3-Bar key to enter a new total, reset the total, or simulate a value for the total. • Totals not associated with a rate channel have additional features: Add to or remove from the total.
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Page 88: View Timers
Instruction Manual Tek-LCD 7801C Technology Solutions 8.5 View Timers • The View Timers menu displays the value of the existing timers. • Press the Right Arrow key to step into the details of the selected timer and view the associated inputs and outputs. -
Page 89: View Alarms
Instruction Manual Tek-LCD 7801C Technology Solutions • Press the 3-Bar key to choose Timer Control, Reset, Start, Stop, or Simulate. • Press the Reset key to reset the timer, select Timer Control for additional functions. Use the Simulate function to simulate the timer rising, falling, or jump to a specific value using the keypad. - Page 90 Instruction Manual Tek-LCD 7801C Technology Solutions • Press the Right Arrow key to view the alarm details. • Press the 3-Bar key to select Ack Alarm, Reset Alarm, change Set Points, or Simulate Alarm condition. • Press the Set Point key to change the Set Points. This re-initializes the alarm to reflect the new set point.
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Page 91: View Inputs
Instruction Manual Tek-LCD 7801C Technology Solutions • Press the + key to turn on the alarm; note that alarm 13 and relay 1 also turned on. Press Ok key to maintain simulation or press Real to cancel simulation. 8.7 View Inputs CAUTION Manual control and simulation states are not saved on power cycle. -
Page 92: Simulate Ma Input
Instruction Manual Tek-LCD 7801C Technology Solutions • Press the Right Arrow key to view the mA Input details. • The above screen shows the Analog Input 2 details and the associated channels. 8.7.1 Simulate mA Input • Use the + / - keys to ramp up and down or use the keypad to jump to any value within the range. -
Page 93: View Outputs
Instruction Manual Tek-LCD 7801C Technology Solutions 8.8 View Outputs CAUTION Manual control and simulation states are not saved on power cycle. On power up the controller initializes to the actual process conditions. • The View Outputs menu displays the values and status of all the outputs and the details of the associated channels. -
Page 94: View Ma Outputs
Instruction Manual Tek-LCD 7801C Technology Solutions 8.8.1 View mA Outputs • Press the Right Arrow key to view the mA Output details. • Press the 3-Bar key to access Analog Output controls. Manual control, hold current value, return to automatic. 8.8.2 Manual Control of 4-20 mA Output •... -
Page 95: View Relays
Instruction Manual Tek-LCD 7801C Technology Solutions 8.9 View Relays CAUTION Manual control and simulation states are not saved on power cycle. • The View Relays menu allows the user to view the details for all the relays. The F4 key can be used to turn on and off the selected relay (momentarily). -
Page 96: View Alert Messages
Instruction Manual Tek-LCD 7801C Technology Solutions • An Alert! message is displayed in place of the Menu key anytime an item is in manual control or simulation mode. 8.9.1 View Alert Messages • If Alerts are enabled for alarms, the Menu key displays a flashing Alert! message on red background. -
Page 97: View Digital Outputs
Instruction Manual Tek-LCD 7801C Technology Solutions 8.10 View Digital Outputs The View Digital Outputs screen displays the status of the digital outputs and shows the association with the parameters used to drive the outputs. 8.11 View Modbus Outputs The View Modbus Outputs screen displays the Modbus outputs set up by the user; it shows the register number and the parameter used to generate each output. - Page 98 Instruction Manual Tek-LCD 7801C Technology Solutions • Press the Scan key to have all available screens continue to scan. • Press the Stop key to have all available screens stop scanning and stay on the current screen. www.tek-trol.com...
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Page 99: Operation
Instruction Manual Tek-LCD 7801C Technology Solutions 9 Operation 9.1 Viewing Screens The controller displays various screens with bar graphs, numerical values, and relay status throughout operation, according to the user-selected setup. There are two basic modes of operation: Automatic scan or manual scan. The controller initializes in automatic scan mode. Press Stop key to stop the automatic scan and use the Left or Right Arrow keys (Previous or Next) to navigate through the various screens. - Page 100 Instruction Manual Tek-LCD 7801C Technology Solutions • Low alarm indication. • High alarm indication. 9.1.1.2 Multicolour Bar Graph Indication • The bar graph can be configured to show different colours depending on the value of the process variable. The following example illustrates the use of colours: Process Bar Graph Set Pt...
- Page 101 Instruction Manual Tek-LCD 7801C Technology Solutions • The bar graph shows green below the first set point. • The bar graph changes to yellow above set point 1. • The bar graph changes to orange above set point 2. • The bar graph changes to red above set point 3. •...
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Page 102: Modbus Rtu & Ascii Serial Communication
Instruction Manual Tek-LCD 7801C Technology Solutions 10 Modbus RTU & ASCII Serial Communication The controller is equipped with serial communication capability as a standard feature. Baud Rate, Parity, Server ID (Address) and Transmit Delay are entered in the System menu, which appears in the main Setup menu. -
Page 103: Modbus Applications
Instruction Manual Tek-LCD 7801C Technology Solutions 40031 Timer (4) Value Float 03, 04 40033 Alarm (1) Status* Short 03, 04 40034 Alarm (2) Status* Short 03, 04 40035 Alarm (3) Status* Short 03, 04 40036 Alarm (4) Status* Short 03, 04 40037 Alarm (5) Status* Short... -
Page 104: Troubleshooting
Instruction Manual Tek-LCD 7801C Technology Solutions 11 Troubleshooting This controller is a highly sophisticated instrument with an extensive list of features and capabilities. If the front panel buttons are used to program the controller, it may be a difficult task to keep everything straight. - Page 105 Instruction Manual Tek-LCD 7801C Technology Solutions 3. Modbus Inputs: Check the Timeout setting, increase the timeout if necessary. Display response seems slower than Ambient temperature is too cold: Consider normal installing a heater with the instrument. 1. Check signal source stability Display reading is unstable, it 2.
- Page 106 Sales: +31 76-2031908 Sales: +971-6526-8344 Support: +1 847-857-6076 Email: tektrol@tek-trol.com www.tek-trol.com Tek-Trol is a fully owned subsidiary of TEKMATION LLC. We o er our customers a comprehensive range of products and solutions for process, power and oil & gas industries. Tek-Trol provides process measurement and control products for Flow, Level, Temperature &...
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