NEMA 4X junction box iQUBE³

polycarbonatestainless steelfor load cells

Overview
The iQUBE³ junction box converts analog load cell signals into a stable digital output and provides embedded diagnostics to report load cell status, voltages and error conditions. It increases noise immunity and supports plug-and-play configuration to simplify routine scale maintenance and speed troubleshooting.

Key Features

• Designed for weighing systems using the 1280 Enterprise™ Series indicator
• iQUBE³ CPU board with four A/D channels, SD slot, RS232/485, four DIOs, Ethernet TCP/IP (wired) and USB‑C
• CPU supports networking up to five iQUBE³ four-channel boards (24 A/D channels total) for connection of up to four separate scales
• Diagnostic routines for weighing errors and overall system health
• Detection of overload, underload, zero reference shift, drift, noise and unbalanced conditions
• Onboard status LEDs including bi-color indication for load cell health
• Load cell emulator to compensate for a failed load cell and maintain weighing operation
• Cal‑Match® algorithm for automatic trim and one-pass calibration using test weights (stopping over each load cell)
• Two option slots for I/O or communications expansions

Options

• Fiber optic interface
• Analog output: 16-bit resolution, 0 to 10 VDC, 0 to 20 mA, 4 to 20 mA
• Relay or serial expansions (two RS-232 or RS-422/485)
• Bridge resistance board

Applications

• Truck and railroad scales
• Tank and hopper scales
• Multi-channel and distributed weighing systems

Approvals

• NTEP 25-041
• Measurement Canada (pending)
• cULus (pending)
• CE Marked (pending)

Dimensions (selected enclosures)
Stainless Steel: A: 13.50 in (343 mm) • B: 12.28 in (312 mm) • C: 12.75 in (324 mm) • D: 10.28 in (261 mm) • E: 8.00 in (203 mm) • F: 6.29 in (160 mm) • G: 6.20 in (157 mm)
Polycarbonate Small: A: 12.13 in (308 mm) • B: 11.45 in (291 mm) • C: 10.51 to 11.30 in (267 to 287 mm) • D: 9.32 in (237 mm) • E: 5.98 in (152 mm) • F: 6.95 in (176 mm) • G: 6.71 in (170 mm)
Polycarbonate Large: A: 14.13 in (359 mm) • B: 13.46 in (341 mm) • C: 12.52 to 13.31 in (318 to 338 mm) • D: 11.36 in (289 mm) • E: 7.99 in (203 mm) • F: 7.02 in (178 mm) • G: 6.79 in (172 mm)

Technical specifications

• Voltage Input: AC 100 to 240 VAC, 50/60 Hz; DC 9 to 36 VDC
• Analog Signal Input Range: -51 to +51 mV
• Analog Signal Sensitivity: 0.3 µV/grad at 30 Hz; 0.5 µV/grad at 100 Hz; 1.2 µV/grad at 500 Hz
• A/D Sampling Rate: 2.5 to 500 Hz (selectable)
• Digital I/O: Four per card for push-button operation, setpoint control or cell status; 24 mA per DIO at 5 V
• Communication Ports: RS-232 / RS-422 / RS-485; USB‑C; Ethernet TCP/IP wired standard; optional wireless Ethernet
• Load Cell Inputs: Connect up to 24 load cells (four per board)
• Load Cell Excitation: 3.3 VDC, 38 mA maximum per channel; supports up to 24 × 350 ohm load cells
• Rating / Material: Polycarbonate (NEMA Type 4X) enclosure; Stainless steel (NEMA Type 4X) enclosure with hinged cover
• Temperature: Certified: 14 °F to 104 °F (-10 °C to 40 °C); Operating: -40 °F to 140 °F (-40 °C to 60 °C); Storage: -40 °F to 158 °F (-40 °C to 70 °C)
• Warranty: Two-year limited