GENERAL DESCRIPTION
SEM400 is a UHF radio modem which is designed based on International standards to send and receive data applicable in industries, especially designed and built for use in the power industry.
Product Application
- Data transmission between a large number of points that are spread in urban areas:
- dispatching systems, electrical networks (distribution and sub-distribution)
- Remote automatic reading of electricity, water and gas meters.
- Data transfer between bank branches and travel agencies
- Data transmission between locations that do not have access to telecommunications common lines or the use of cable lines is costly.
- Data transmission in mobile mode.
- Early warning Network Monitoring: floods, fires.
- Telemetry systems:
Remote control operation or modification will be carried out in Electricity supply networks, gas and oil pipelines, equipment related to water resources management and sanitation, railways, mining, industrial, agricultural and anywhere that requires knowledge of network status, system control, data collection and diagnosis and correction of system faults.
- Data collection and control:
This system could actually be connected to any data acquisition system (Data Logger), RTUs (point-to-point or point to multipoint), PLC (for factory automation) or any equipment which is connected with RS-232 interface.
- Power industry application features:
- Can be used with distribution automation protocols (IEC870-5-101, DNP3)
- Applicable to the system of commanding and data acquisition (SCADA)\
- Data collection and control applications (point-to-point or point to multipoint)
- Can be used in power distribution RTUs.
Features
- The technical specifications complying with the standard ETS 300-113
- Affordable
- Simple Installation, setup and application.
- Transmission data bit rate of 9600 bits per second via a radio channel.
- High flexibility due to the built-in microprocessor
- Ability to set operating parameters with software:
- Operating frequency range
- Frequency channel spacing: 25 kHz or 12.5 kHz
- The transmitter output power: 0.5 to 6 Watts
- Bits rate: 9600 bps
- Retrieve and adjust system parameters, test the radio link and send and receive data using any standard serial port software.
- Includes error detection coding (CRC-16) and FEC error correction.
- The ability of Bit Scrambling and Packet Interleaving.
- The transmitter automatically activates data entry (DOX).
- RS-232 port asynchronous interface to set the bit rate in the range of 0.3 to 38.4 kilo bits per second.
- Equipped with advanced encryption (AES)
Technical Specification
|
Radio parameters |
|
|
Frequency bands |
403 - 419 MHz (Optional 370 – 450 MHz) |
|
Channel spacing |
12.5 KHz |
|
Frequency stability |
+/- 1.0 ppm |
|
Data Modulation |
GMSK |
|
RF Data rate |
9.6 kbps |
|
FEC (Forward Error Correction) |
Yes |
|
Standard |
In accordance with ETSI300-113 |
|
Software |
|
|
Operating modes |
Bridge / Router |
|
User protocols on COM, Ethernet |
DNP3 (Multi address support) - Transparent |
|
Protocol on Radio channel |
|
|
Remote to Remote communication |
Yes |
|
Data integrity control |
CRC16 |
|
Encryption |
AES256 |
|
Diagnostics and Management |
|
|
Radio link testing |
Yes |
|
Remote Setup |
Yes |
|
Transmitter |
|
|
RF Output power |
0.5 – 1.0 – 1.5 – 2.0 – 2.5 – 3.0 – 3.5 – 4.0 – 4.5 – 5.0 – 5.5 – 6.0 W |
|
Duty cycle |
Continuous |
|
Rx to Tx Latency Time |
< 16 ms |
|
Intermodulation Attenuation |
> 70 dB |
|
Spurious Emissions (Conducted) |
< -36 dBm |
|
Radiated Spurious Emissions |
< -36 dBm |
|
Adjacent channel power |
< -60 dBc |
|
Transient adjacent channel power |
< -60 dBc |
|
Receiver |
|
|
Sensitivity |
-110 dBm |
|
Tx to Rx Latency Time |
< 7 ms |
|
Maximum Receiver Input Power |
20 dBm (100 mW) |
|
Rx Spurious Emissions (Conducted) |
< -57 dBm |
|
Radiated Spurious Emissions |
< -57 dBm |
|
Spurious response rejection |
> 70 dB |
|
Electrical |
|
|
Primary power |
10 to 15 VDC, negative GND |
|
Power consumption |
12V – 6 W Transmission : 25 W |
|
Sleep mode |
12V – 0.7 A |
|
Interfaces |
|
|
Ethernet |
10/100 Base-T RJ45 |
|
COM |
RS232 4800 – 115200 bps |
|
Antenna |
50 ohms / N-Type female |
|
LED panel |
|
|
3 color status LEDs |
Power, Rx, Tx |
|
Environmental |
|
|
IP Code (Ingress Protection) |
IP54 (IP55 with external box) |
|
MTBF(Mean Time Between Failure) |
> 500.000 hours (> 50 years) |
|
Operating temperature |
−20 to +70 °C |
|
Operating humidity |
5 to 95% non-condensing |
|
Storage |
−40 to +85 °C |
|
Mechanical |
|
|
Casing |
CNC-Formed aluminum enclosure |
|
Dimensions |
50 H x 230 W x 130 D mm |
|
Weight |
1.7 kg |