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License-free and
wireless-operates in the2.4 to
2.483 GHz Industrial, Scientific and Medical (ISM) spread spectrum band
Maximum immunity to
interference, even in high noise environments
Factory or field
configured for your application-ensuring trouble-free installation
User configurable for
master, remote,
repeater or repeater/remote mode
Frequency key options
allow for different
systems to operate simultaneously in close
proximity
Rated range of
up to 20 miles (32 km) and
an installed range of up to 30 miles (48 km) with line-of-sight/omni
directional antenna-
further with repeaters
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| Series DDAA1000 of Data-Linc Group |
Data-Linc
Group's DD1000/SRM/2.4 and DDAA1000/SRM/2.4 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/2.4 combines an
analog/discrete signal digitizer with Data-Linc Group’s SRM
industrial grade licensefree 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 (4-20 mA)
inputs and outputs. The DD1000/SRM/2.4 is as described above but
offers only the discrete function.
The radio section of the multiplexers
incorporate the license-free 2.4-2.4853 GHz spread spectrum ISM
(industrial/scientific/medical) band technology used by the Data-Linc
Group SRM Family of radio modems. 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.
DDAA1000
Features
- Easy to implement
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Field configurable
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Automatic restart
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No special software required
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Point-to-point or
point-to-multipoint
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Inexpensive to install—no wires
to route or ditches to dig
Industrial
Applications
The DDAA1000 is ideal for industrial automation systems with:
- Mining
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Water/wastewater- monitor tank
levels via 4-20 mA analog signals and control pump contact
closure via discrete signals
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Most types of discrete 4-20 mA
applications
DDAA1000
Specifications
System
Configurations
Point-to-point, point-to-multipoint; (1 Master with up to 8
addressable single channel Remotes)
Channel Functions
Analog. 4-20 mA standard, 24 VDC 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 100 mA per channel
12-24 VDC
Operating Environment
Standard. 320 to 1400 F (00 to 600 C)
Humidity. 0 to 95% non-condensing humidity
Connections
RF Antenna. Standard thread SMA female. Supplied
bench test 0 dB antenna. Optional external omni or yagi antennas
available.
Analog. (4-20 mA 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. 12 VDC nominal, min 10.5, max 18 VDC Current. 160 mA idle,
660 mA peak on transmit
Enclosure
Standard. 18-gauge steel with mounting flanges
Weight
1.65 lb (0.75 kg)
DDAA1000 Enclosure Dimensions
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