- Single hop distance 5km line-of-sight unlicensed, 40km licensed
- Repeater function for long distances
- Unlimited repeater hops
- Repeater routing via address selection
- Forward error correction, CDR error checking with ARQ
- Turn- around time 5msec
- Signal strength and BER indication
- Configurable on-line by Hayes AT commands or Windows software
- Transparent broadcast mode, peer to peer
- Licensed/license-free radio channels, suitable for most countries (150, 220, 360 - 512MHz, 10mW - 5W RF power option availability)
- Wireless data up to 19.2Kbps
- Diagnostics/Configuration via RS232 port
- Seperate RS232 and RS485 ports
- Remote configuration via wireless channel
- 128 bit AES security encryption
- Configurable mesh/repeater networking
- Network management suite software
Indicative Applications
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Elpro 455U-D Frequency Options
| Frequency | Frequency Band | TX Power | Channel Spacing |
| 400MHz | 360 - 512MHz | 10 - 500mW, 0.5 - 5W | 12.5/20/25KHz |
Note: Specifications subject to change.
General Specifications
| Temperature | -30°C to +60°C |
| Humidity | 0-99%RH Non-Condensing |
| Housing | Aluminium: 115 x 141 x 32mm |
| Mounting | DIN rail mounting |
| Terminal strip | Removable: up to 2.5mm2 (12 gauge AWG wires) |
| Compliances • EMC • Radio • Safety |
|
System Configuration Parameters
| System/group address | Configurable 8 bit value (0-25) |
| Data encryption | 128 bit AES |
| Configurable parameters | Broadcast mode, addressed mode, optimum path routing mode, baud rate (9.6 - 19.2Kbps); serial port 1.2 - 115.2Kbps |
| Protocols supported | Modbus RTU, DNP3, DF1, Profibus DP |
| User configuration | Dedicated serial port and remote configuration |
Inputs/Outputs
| Digital Inputs | 1 voltage free |
| Digital Outputs | 1 (FET 30VDC, 500mA) |
Power Supply Specifications
| Nominal Supply | 11 to 30VDCC; under/over voltage protection |
| Quiescent current draw | Normal: 110mA @ 13.5VDC Power saving mode: 40mA @ 13.5VDC |
| Transmission current draw | 450mA (<1.5W); 800mA (1W); 1.25A (2W); 2A (5W) Battery charger: floating charge voltage to 13.8VDC (currrent limit set to 1.6A; minimum supply voltage 17V) |
Radio Specifications
| Modulation | DSFK*, 4-level FSK |
| Band/Transmit power | 150 - 174MHz, 100mW - 5W; 220 - 235MHz, 100mW - 5W: 360 - 512MHz, 10mW - 5W |
| Receiver sensitivity | -111dBm |
| Data rate | Up to 19.2 Kbps |
| Line of sight range max** | 5W - 40km single hop with repeater options |
| Antenna port connector | SMA female (Surge diverter: CSD-SMA-2500) |
Note: Specifications subject to change.
• *DSFK - Digital Frequency Shift Key
• **As with all distances quoted, these are dependant on local terrain/obstacles
The Elpro 455U-D radio modem provides RS232 or RS485 connections by radio. It is a low cost wireless alternative for linking PLC’s, data loggers, supervisory computers and intelligent transducers. The 455U-D has been designed to be easy to use and simple to install. It uses a low power 400MHz radio which does not require a radio licence in most European countries or South Africa. The module is fully integrated with radio, power supply, serial ports and microprocessor controller housed in a strong industrial aluminium case.
