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Specifi cations
Power
4.0-6.0VDC 100mA
Temperature
Operation
-10 to +70 C
Storage
-20 to +80C
Humidity
85% RH
Communication
Simplex/semiduplex
Modulation
Direct Sequence Spread Spectrum
Offset QPSK signal
Speed
Max. 250kbps
Range
800 meters line of sight
Transmit Output
Max 10mW
Com Freq. 2405 MHz to 2475 MHz (5MHz step,
15 channels)
Adjacent ch -25 dB
Occupied Freq width 5 MHz max
Receive Sensitivity -95 dBm or better
Spurious response 25 dB or better
Adjacent ch rej
20 dB or better
Carrier sense (RSSI) -77dBm +/- 5dB
Interface
8 pin terminal block 24-16AWG
Communication
Semiduplex RS485 Standard
Speed
2.4k/4.8k/9.6k/19.2k/38.4 k
/57.6k/115.2k kbps (19200 default)
Data length
1 to 256 bytes
Databit
8 bit, even parity, 1 start, 1 stop bit
LSB fi rst, no fl ow control
Wire cable length
30m max (using 16 AWG)
Indicating LED
Red, Green, Orange
Switches: Node
2 each 4bit (0-99)
Group ID 1 ea. 4 bit, 16 conditions
Channel
1 ea 4 bit, 15 ch (11-25)
Dimensions
55 X 75 X 20mm (with projections)
Weight
100g maximum
Note: Factory confi gured for 19,200 baud, 8 data bits,
even parity, one stop bit unless otherwise specifi ed
Model Number Key
WRT - R85 - 05D - C - 1 - M
Comm.:
- M Master
- S Slave
NETWORK ZONES (Master)
-0: Slave node
- 1: 99 nodes, 1 input each
- 2: 2 nodes, 63 input each (99 max)
- 4: 4 nodes, 31 inputs each
- 7: 7 nodes, 15 inputs each
- 13: 13 nodes, 7 inputs each
HOUSING:
- C Common
POWER SUPPLY:
-05D 5VDC (100mA minimum)
OUTPUT:
-R85
RS485 - Modbus RTU
SENSOR TYPE:
WRT Wireless Radio Transmitter
Sensors and Transducers
Other NK Technologies Products Include:
AC & DC Current Transducers
AC & DC Current Operated Switches
1φ & 3φPower Transducers
Current & Potential Transformers (CTs&PTs)
3511 Charter Park Drive, San Jose, CA 95136
800-959-4014 or +1-408-871-7510 Phone
+1-408-871-7515 FAX
sales@nktechnologies.com, www.nktechnologies.com
INSTRUCTIONS
:
WRT SERIES
Radio Transmitter/Receiver
Quick "How To" Guide
1. Set the node ID (See zone table on Confi gura-
tion page)
2. Use master receiver set to node 0
3. Set radio channel
4. Set power input switch to terminal
5. Set group ID if needed
6. Mount the transmitter
7. Connect power source
8. Connect RS485 cable to slave unit
9. Power up, confi rm data reception
WRT Inst. Rev 2 08/05/2013 P/N 894080001
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Related Manuals for NK TECHNOLOGIES WRT Series
Summary of Contents for NK TECHNOLOGIES WRT Series
- Page 1 1. Set the node ID (See zone table on Confi gura- Channel 1 ea 4 bit, 15 ch (11-25) tion page) Other NK Technologies Products Include: 2. Use master receiver set to node 0 Dimensions 55 X 75 X 20mm (with projections) AC &...
- Page 2 Description Confi guration The WRT is a Wireless data transmission device designed When installing one zone, set the node (radio) address to to receive and transmit RS485 data packets. The product the same value as the data input device. The factory must is factory confi...
- Page 3 Network Connection Examples Trouble Shooting Master Device Master Device Comm Address : 0 1. No network communication Comm Address : 0 A. Check for node power. Confi rm that the LEDs are on: Green, Wired RS485 Wired RS485 Red, Orange. Check power source switch position on the back of the node.