Industrial Wireless / Wireless Radio I/O Extender
Wireless Radio I/O Extender
DD1000/SRM/2.4 or DDAA1000/SRM/2.4
The Data-Linc Group DD1000/SRM and DDAA1000/SRM wireless multiplexers offer applications the ability to transmit 4-20mA and/or discrete signals without the cost or inconvenience of adding wires or additional devices.
The DDAA1000/SRM combines an analog/discrete signal digitizer with Data-Linc Group’s SRM industrial grade license-free wireless modems. The result is a simple to implement solution for I/O signal transmission.
Each DDAA multiplexer has eight discrete inputs and eight outputs, as well as eight analog (4-20mA) inputs and outputs.
The DD1000/SRM is as described above but offers only the discrete function.
The radio section of the multiplexers incorporate the license free 2.4 GHz-2.4835 spread spectrum ISM (industrial/scientific/medical) band technology used by the Data-Linc Group SRM Family of radio modems. (Also available for the 900 MHz band.) These units are capable of wireless transmission up to 15 miles (24 km) with line-of-sight and an omni directional antenna.
In the event of a communications link failure, discrete outputs will default to open, while analog outputs will default to 4 mA.
Features:
- Easy to implement
- Field configurable
- Automatic restart
- No special software required
- Point-to-point or point-to-multipoint data acquisition and control
- Inexpensive to install—no wires to route or ditches to dig
Applications:
- Mining
- Water/Wastewater- monitor tank levels via 4-20 mA analog signals and control pump contact closure via discrete signals
- Most types of discrete 4-20 mA applications
DD1000/SRM/2.4 and DDAA1000/SRM/2.4 Specifications
System Configurations
Point-to-point, point-to-multipoint; 1 Master multi-dropped with up to 8 addressable single channel Remotes
Channel Functions
- Analog. 4-20mA standard, 24VDC max. Internal 8 Bit
- A/D yields 2% accuracy of 4-20 signals
- Discrete Input. Dry contact closure-switch closure detection
- Discrete Output. Open collector— sync to ground 100mA per
- channel 12-24VDC
Operating Environment
- Standard. 32° to 140° F (0° to 60° C)
- Humidity. 0 95% non-condensing humidity
Connections
- RF Antenna: Standard thread SMA female.
- Supplied bench test 0dB whip antenna.
- Optional external omni directional or yagi antennas available.
Analog. (4-20mA input and output):
- 9 Position pluggable terminal blocks
- Pluggable terminal blocks standard wire size 12-26 AWG
Digital. (Contact closure input and output):
- 9 position pluggable terminal blocks
- Pluggable terminal blocks standard wire size 12-26 AWG
Power. Barrel jack (2.0 mm center, 6.5 mm barrel)
- 120 to 12 VDC barrel jack transformer included
Configuration.
- 6 pin mini-din. RS232 port used for reconfiguration of RF and
- processor channel parameters.
- Supplied programming cable and Software CD with each Master unit.
Indicators
- Power.
- CD (Carrier Detect)
- Tx (Transmit Data)
- Rx (Receive Data)
- Status (Error Status, Master unit only)
Voltage and Current
- Voltage: 12VDC nominal, Min 10.5, Max 18VDC
- Current: 160mA idle, 660mA Peak on Transmit
Enclosure
- Standard. 18-gauge steel with mounting flanges
- Weight. 4 lb (1.82 kg) See diagram below.
- 2.4 GHz Versions of DD1000/SRM and DDAA1000/SRM
DD1000/SRM/M/2.4GHz (Master unit)
- Discrete signal multiplexer with integral radio modem:
- 2.4-2.4835 GHz license free radio modem with 8 discrete Inputs and Outputs.
DD1000/SRM/R/2.4GHz (Remote unit)
- Discrete signal multiplexer with integral radio modem:
- 2.4-2.4835 GHz license free radio modem with 8 discrete Inputs and Outputs.
DDAA1000/SRM/M/2.4GHz (Master unit)
- Discrete and Analog signal multiplexer with integral radio modem:
- 2.4-2.4835 GHz license free radio modem with 8 discrete Inputs and Outputs as well as 8 analog Inputs and Outputs.
DDAA1000/SRM/R/2.4GHz (Remote unit)
- Discrete and Analog signal multiplexer with integral radio modem:
- 2.4-2.4835 GHz license free radio modem with 8 Discrete Inputs and Outputs as well as 8 analog Inputs and Outputs.