Tek-Trol Tek-LCD 7900A-6H2 Analog Input Batch Controller
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Manufacturer warranty Description
Features:
- Sun Bright Display Standard
- Start, batch, & stop with pause front panel buttons
- Display batch total + rate, total, batch count or preset
- Single or multi-stage batching with up to 8 relays
- Automatic overflow correction
- Manual control or automatic batching
- SafeTouch® through-glass button programming
- Modbus RS-485 serial communications
- Flanges for wall or pipe mounting
- Isolated 24 VDC at 25 mA transmitter power supply
- Grand total can count up or down
- On board USB and Meter View® Pro programming software
Applications:
- Batching
- Dosing
- Loading
- Blending
The Tek-Batch 7900A is an analog input (4-20 mA, 0-5 V, 1-5 V, etc.) digital batch controller specifically designed for single and multi-stage batching applications. It provides excellent but simple batch control capabilities with features such as preclose relays and automatic overrun correction for more accurate batches and convenient SafeTouch® through-glass buttons for simple operation and menu navigation without having to remove the cover. The preclose deactivates a specific relay before the batch is finished to allow slower fill rates and increased accuracy. Automatic overrun correction keeps the batch size accurate over time and with system wear. The Tek-Batch 7900A includes a 24 VDC power supply to drive the flow meter and can be equipped with up to four internal relays and a 4-20 mA analog output.
Dimensions:
Technical details
- Power 85-265 VAC 50/60 Hz, 90-265 VDC, 20 W max
- Weight 16.0 lbs (7.26 kg)
- Enclosure Explosion-proof die-cast aluminum with glass window, corrosion-resistant epoxy coating, color: blue. NEMA 4X, 7, & 9, IP68. Default conduit connections: Four 3/4" NPT threaded conduit openings and two 3/4" NPT metal conduit plugs with 12mm hex key fitting installed.
- Dimensions 6.42″ x 7.97″ x 8.47″ (W x H x D) (163 mm x 202 mm x 215 mm)
- Mounting Four slotted flanges for wall mounting or NPS 1-1/2" to 2-1/2" or DN 40 to 65 mm pipe mounting
- Version Controller without 4-20mA Output
- Display Upper display: 0.60″ (15 mm) high. Lower display: 0.46″ (12 mm) high. Both are 6 digits (-99999 to 999999), red LEDs.
- Connections Removable screw terminal blocks accept 12 to 22 AWG wire, RJ45 for external relays, digital I/O, and serial communication adapters.
- Display update rate 5/second (200 ms)
- Front Panel NEMA 4X, IP65
- Over Range Display flashes 999999
- USB connection Compatibility: USB 2.0 Standard Compliant Connector Type: Micro-B receptacle Cable: USB A Male to Micro-B Cable Driver: Windows 98/SE, ME, 2000, Server 2003/2008, XP 32/64-bit, Vista 32/64-bit, Windows 7 32/64-bit, Windows 10 32/64-bit Power: USB Port
- Non-volatile Memory All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.
- Default Display Assignment The upper display shows the batch total. The lower display shows the rate with alternating units and can be switched to show total, batch count, or preset with the STOP key.
- Custom Display Assignment The upper and lower displays may be assigned to rate, total, total, batch count, preset, set points, units (lower display only), alternating R & T, R & GT, preset & rate, max & min, or a Modbus display register. Any rate/total/total display may be programmed to alternate with a custom unit or tag.
- Alternating Display Displays alternate every 10 seconds when the display is selected or the batch is paused.
- Display Intensity Eight user selectable intensity levels
- Under Range Display flashes -99999
- Operating Methods Three programmable front panel buttons (default START, BATCH, STOP), digital inputs, PC and MeterView Pro software, and Modbus registers.
- Programming Methods Four SafeTouch through-glass buttons when the cover is installed. Four internal pushbuttons when the cover is removed.
- F4 Digital Input Contacts 3.3 VDC on contact. Connect normally open contacts across F4 to COM.
- F4 Digital Input Logic Levels Logic High: 3 to 5 VDC Logic Low: 0 to 1.25 VDC
- Max/Min Display Max (Peak) / min (Valley) readings reached by the process are stored until reset by the user or until power is cycled.
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