RS-422 Network Interface Module Type 3 (NIM-3)
With the introduction of our new product line (Chameleon+), 2023 (or while supplies last) marks the end of production for legacy Chameleon (EOL Announcement). We will continue to provide technical support on all EOL products. In addition, we will continue to repair the EOL products for as long as replacement parts can be acquired.
Features and Benefits
- Isolated RS-422 Interface with Selectable On-board Biasing and Termination
- Protocols: Master or Slave Modbus RTU/ASCII and Custom ASCII or Binary Messaging
- Network Configuration Tools Integrated in Design Pad G3
- Multiple NIMs Can Be Combined to Form Gateway, Bridge, Routing, and/or Redundant Connection Functionality
- Selectable Baud Rates from 75 bps to 1 Mbps
- -40°C to +65°C (-40°F to +149°F) Operating Range
- MIL-STD-901D Grade A for High Impact Shock
- MIL-STD-167B for Vibration
- MIL-STD-461E (Pending) for Electro-Magnetic Interference (EMI)
- Supports Hot Swapping
The Chameleon RS-422 Network Interface Module (NIM-3) offers high-speed communications using Modbus ASCII (master and slave), Modbus RTU (master and slave), Custom ASCII, or Custom Binary protocols.
You can network up to 80 NIM-3 modules and achieve data rates as high as 1 Mbps. NIM-3 units have built-in biasing and termination circuitry for easy and reliable network configuration.
As with all Chameleon modules, NIM-3 units are hot-swappable: to replace one, you can simply swap the front panel (with attached processing board) and the unit is back online—there is no need to shut off the power or to detach connectors. They also provide unequaled ruggedness. They are specifically designed for sustained operation in severe environments, including those characterized by extreme shock, vibration, electro-magnetic interference, temperature, and/or humidity. Its fully-sealed enclosure (sealing end-caps not pictured) ensures long-lasting operation in the grimiest settings.
| ENVIRONMENTAL CHARACTERISTICS | |
| Operating Ambient Temperature Range | -40°C to 65°C |
| Storage/Transport Ambient Temperature Range | -40°C to 85°C |
| High Impact Shock | MIL-STD-901D, Grade A |
| Mechanical Vibration | MIL-STD-167B, 0-50Hz |
| Electro-Magnetic Interference | MIL-STD-461E (Pending) |
| Facial/Housing Protection | NEMA 1,2,4,4X,5,6,12,12K,13 |
| ELECTRICAL CHARACTERISTICS | |
| Maximum Power Consumptions | 2.8W |
| Network Capacity | One module can drive 10 standard RS-422 unit loads or 80 NIM-3 modules |
| Network Capacity | 80 NIM-3 modules can be driven by a standard RS422 transceiver |
| Max Baud Rate | 1 Mbit / Second |
| Electrostatic Discharge Protection | +/- 15 KV Human Body model |
| Signal Electrical Isolation from Control Circuitry | 1500 VDC |
| Cable Fault Protection | No spurious signals on receiver inputs if network cable is open or shorted |
| Biasing | On-board 470Ω high and low |
| Termination | On-board 110Ω |
| Supported Cable Diameters | Two glands 0.24”-0.47”; two glands 0.16”-0.31” |
| Supported Wire Gauges | 16-28 AWG |
| OPERATOR INTERFACE | |
| Status Readout | One three-color (red/yellow/green) Indicator |
| IR Wireless Interface | 115 kbps SIR |
| PHYSICAL CHARACTERISTICS | |
| Weight | 1.3 lbs |
| Front Panel Dimensions | 2.5” W x 6” L |
| Enclosure Height | 3″ H |
The following part numbers can be used when ordering the RS-422 Network Interface Module Type 3 (NIM-3).
| Fairmount Part Number | Description |
| 01012-009 | NIM-3 with Gray Enclosure |
| 01012-309 | NIM-3 with Black Enclosure (without Stuffing Tubes) |
| 11030-201 | NIM-3 Active Board and Gray Cover |
| 11030-251 | NIM-3 Active Board and Black Cover |
| 01014-009 | NIM-3 Half-Size Gray Enclosure with Wiring Hub Assembly |
| 01014-309 | NIM-3 Half-Size Black Enclosure and Wiring Hub Assembly (without Stuffing Tubes) |
| 11031-100 | NIM-3 Wiring Hub Assembly |
See the Selection and Ordering Guide for additional information.