Rice Lake 920i® Programmable Weight Indicator and Controller


  • LCD display, (W x H) 4.6 in x 3.4 in
  • Selectable character sizes from 0.25 in to 1.2 in
  • 60 configurable operator prompts
  • Display up to four scale channels per screen with required Legal for Trade information
  • 32 scale accumulators
  • Five softkeys with 10 user-defined, 14 preset functions per screen
  • Ten programmable display screens
  • Millivolt calibration, five-point linearization and geographical calibration
  • NEMA Type 4X/IP66 stainless steel enclosure
  • Selectable A/D measurement rate up to 960/second
  • 100 setpoints, 30 configurable setpoint types
  • Two slots for option cards
  • 1,000-ID truck register for in/out weighing
  • 64 K user on-board NV RAM
  • User programmable 128 K flash memory
  • Reflash memory to upgrade firmware
  • Power for 16, 350 ohms load cells per A/D board
  • Local-remote indicators
  • Multi range/interval
  • Alibi™ storage
  • Audit trail tracking
  • Peak hold
  • Rate of change
  • USB interface card on Port 2
  • The USB card is supported on Rev L CPU boards or later
  • The 920i for USB interface requires firmware version 5.0 or higher
  • Standard Type A: 920i connects to keyboard,
  • ASCII font label ticket printers and flash drives
  • Standard Type B: 920i connects to PC
  • Supports weigh mode and configuration mode functions
  • Supports upload of databases and .920 configuration file
  • Supports download of databases, .920 configuration file, iRite, COD file and firmware file
  • Sanity checks for command errors
  • Supports USB 2.0
  • Create sub directories by unit ID and database name
  • Use the root directory for generic files
  • Sealed receptacle
  • Connectors – cables
  • USB cover – flash drive and receptacle

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The 920i® programmable weight indicator/controller is different, yet intuitively familiar for even the least experienced operators. It is truly the first of its kind to blend revolutionary user interfaces, total flexibility and ultimate processing performance with the simplicity of a basic weight indicator. We have taken the best features from weight instruments, PLCs and computers and added more robust electronics, a crisp graphical display and programmable softkeys. Put it all together inside a virtually indestructible enclosure and you have one of the most advanced HMIs the industry has ever seen. Adding an entirely new dimension in flexibility for solution providers and users alike, the 920i HMI indicator/controller delivers simplified customization at a fraction of the cost of traditional process instrumentation.

From tailored basic  weighing to complex process automation, the 920i programmable weight indicator/controller gives you exactly what you need, exactly the way you want it.

Up to ten different screens can be programmed to change with any given process, while graphic icons and messages show setpoint and function status. The multi-channel display feature shows the weight on an individual scale or a combination of totalized scales. When used in batching/mixing applications, one 920i is capable of handling multiple scales, flow temperature and pulse. The 920i can control hundreds of I/O setpoints—queuing for such things as gates and conveyors. The 920i’s complete database capability stores your important data and files.

For more seamless communication with external devices, use the 920i programmable weight indicator/controller with USB. It shares the same hardware as the standard 920i, but replaces the PS/2 interface port with a USB interface. Connector types include Standard Type A for hosting, connecting keyboards, printers and memory devices, and Standard Type B for connecting as a device to PCs.

Delivering more features, more programmability and more power for your process, the 920i HMI indicator/controller combines performance-driven circuitry, simplified architecture and customized display features to take your system further.

AC voltages: 100-240 VAC Frequency: 50-60 Hz
DC voltages: 12-24 VDC
Consumption: AC: 25 W universal, 65 W panel & wall mount
DC: 25 W

Excitation Voltage:
10 ± VDC 8 x 350Ω or 16 x 700Ω load cells per A/D card

Analog Signal Input Range:
-45 mV to +45 mV

Analog Signal Sensitivity:
0.3 μV/graduation minimum at 7.5 Hz
1.0 μV/graduation recommended

A/D Sample Rate:
7.5 to 960 Hz, software selectable

Internal: 8 million counts/8,000,000
Display: 9,999,999

System Linearity:
± 0.01% full scale

Digital I/O:
Six I/O channels on CPU board; optional 24-channel
I/O expansion boards available

Communication Ports:
Four ports on CPU board support up to 115,200bps
Port 1: Full duplex RS-232
Port 2: RS-232 with CTS/RTS; PS/2 keyboard
interface via DB-9 connector
Port 3: Full duplex RS-232, 20mA output
Port 4: Full duplex RS-232, 2-wire RS-485,
20mA output
Optional dual-channel serial expansion boards available
Channel A: RS-232, RS-485, 20 mA
Channel B: RS-232, 20 mA

(W x H) 4.6 in x 3.4 in (116 mm x 86 mm), 320 x 240
pixel LCD module with adjustable contrast.
Transmissive display
Transflective display (optional)

27-key membrane panel, tactile feel, PS/2 port for
external keyboard connection

Temperature Range:
Certified: 14°F to 104°F (-10°C to +40˚C)
Operating: 14°F to 122°F (-10°C to +50˚C)

Universal enclosure: 9.5 lb (4.3 kg)
Wall mount enclosure: 23.0 lb (10.4 kg)
Panel mount enclosure: 8.5 lb (3.9 kg)
Deep universal: 11 lb (5.0 kg)

NEMA Type 4X/IP66, stainless steel

Two-year limited warranty

EMC Immunity:
EN 50082 Part 2 IEC EN 61000-4-2, 3, 4, 5, 6, 8, and 11

NTEP CC 01-088, Class III/IIIL 10,000d
Measurement Canada AM-5426,
Class III/III HD 10,000d
OIML approved 6,000/10,000, UK 2658
UL/cUL Listed (universal, deep and wall mount enclosure)
UL/cUL Recognized (panel mount)
UL/cUL Listed 508A (custom wall mount)
CE Marked

Additional information

Weight25 lbs

Wall Mount Enclosure, Deep Universal Enclosure, Panel Mount Enclosure, Universal Enclosure

Channel type

Dual Channel, No A/D Channel, Single Channel


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