Tek-Trol Tek-LCD 7804A-AX0 NEMA 4X Modbus Scanner Indicator
Condition: 
Brand New
Brand New $1,567.00 /Each
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Manufacturer warranty Description
Features:
- Modbus Master, Slave, or Snooper Mode
- Scan up to 16 Modbus Process Variables
- 5-Digit Decimal or Feet & Inches Level Display
- On-Board Three-Wire RS-485 with Modbus
- Independent Scaling, Tag, and Unit for Each PV
- 7 Alphanumeric Characters 0.4" (0.03 ft)
- Injection-Molded, IP65, NEMA 4X Enclosure
- SafeTouch Through-Window Button Programming
- Pulse Input for Rate, Total, and Grand Total
- 13-Digit Totalizer with Total Overflow Feature
- Backlight Standard on All Models
- Automatic Rate, Total, and Grand Total Unit Conversions
- Operates from -40°C to 75°C (-40°F to 167°F)
- Data Logging Functions and Modbus Accessible Data
- Two Isolated Pulse Outputs Standard, Up to 5 kHz
The Tek-LCD 7804A is a plastic, field-mounted, RS485 serial input Modbus® RTU scanner capable of scanning up to 16 Modbus variables and displaying them on an easy-to-read, dual-line, LCD. It can be programmed as a Modbus RTU master, slave, or snooper. The lower line is the same for both versions and consists of seven alphanumeric characters. Two features that make the Tek-LCD 7804A stand out are its wide viewing angle display and SafeTouch® through-window buttons. These buttons allow the Tek-LCD 7804A to be programmed and operated through the cover window, thus eliminating the need to remove the cover in dirty or wet environments.
Dimensions:
Technical details
Main features
- Weight 1.65 lbs (26.4 oz, .75 kg)
- Mounting May be mounted directly to the conduit. Two slotted flanges for wall mounting or NPS 1-1/2" to 2-1/2" or DN 0.13 ft to 0.21 ft pipe mounting.
- Input Power 9-30 VDC, 38 mA max. 2.2 W
- Overall Dimensions 5.67″ x 5.25″ x 4.18″ (0.47 ft x 0.43 ft x 0.34 ft) (W x H x D)
- Backlight White LED, 10-sec auto-off when battery-powered. Backlight deactivated below temperature ~ -20°C (-4°F)
- Over Range Upper Display: Decimal display flashes 99999 The level display flashes to 399FT 1115/16 IN Lower Display: Flashes 9999999
- Under Range Upper Display: Decimal display flashes -9999. The level display flashes to 399 FT, 11 and 15/16 IN Lower Display: Flashes -999999
- Display Assignment Top and Bottom Display: Process Variables (PV); Alternating PV and Units, Tag and PV, or Tag, PV, and Units; Pulse Input Rate, Total, or Grand Total with Alternating Tag. Units and tags are independent for each PV, pulse input rate, total, and total. Note: On feet and inches display models, the top display is used only for level Modbus process variables or math channels.
- Programming Method Four SafeTouch through-window buttons when the cover is installed. Four internal push buttons when the cover is removed.
- Recalibration Calibrated at the factory to read frequency in Hz. No recalibration is required.
- Display Orientation The display may be mounted at 90° increments up to 270° from default orientation.
- Password Menu Three programmable password selections can be used for the following: restrict modification of settings, prevent resetting the total or grand total without the password, or permanently lock out the ability to change or reset the grand total or any grand total-related settings(making a non-resettable grand total). Pass: Restricts modifications of programmed settings to require re-entering the password to make changes. Pass T: Restricts the reset of the total to require re-entering the password. Disables the manual mode reset contact. Pass GT: Restricts the reset of grand total to require re-entering the password. May enable a non-resettable grand total and permanent lockout of grand total-related settings with a specific password.
- Decimal Display Top Display: Five Digits (0 to 99999), 0.7″ (0.05 ft) high, 7-segment, automatic lead zero blanking. Bottom Display: Seven Characters, 0.4″ (0.03 ft) high, 14-segment, automatic lead zero blanking. Symbols: Total, grand total, high alarm, low alarm, SafeTouch button sleep mode/disable, password lock.
- Feet & Inches Display Top Display: 0.60″ (0.05 ft) high, 0 to 399 FT, 11 and 15/16 IN, 7-segment, programmable 1/16 or 1/8 fraction display. Bottom Display: Seven Characters, 0.4″ (0.03 ft) high, 14-segment, 7-digits. Tank Level Indicator: 20-segments, F (Full) and E (Empty). Alarm Indication: High and low alarm Backlight: White
- Alarm Indication Flashing display plus HI/LO (alarm) or SET indicators.
- Scan and Update Rate Ambient > -20°C (-4°F): Modbus PV scan rate programmable from 2 to 99 seconds per PV. Tag and units programmable for 1 to 5-second alternation. Pulse input variables update 1/second. Rate update is dependent on gate settings. Ambient < -20°C (-4°F): All Modbus scan, alternating units and tags, and pulse input variables update/10 seconds minimum.
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