905K Radio Telemetry Module User Manual
ELPRO Technologies Pty Ltd 2010 Page 6
905U-K Radio Telemetry Module
USER MANUAL
1 OVERVIEW ---------------------------------------------------------------------------------------- 8
1.1 Input Signals .................................................................................................................... 8
1.2 Power Supply ................................................................................................................... 9
1.3 Radio Transmitter ............................................................................................................ 9
1.4 Configuration ................................................................................................................... 9
2 OPERATION -------------------------------------------------------------------------------------- 11
2.1 Normal Operation .......................................................................................................... 11
2.2 What information is transmitted over the radio? ........................................................... 11
2.3 How often is the input information sent by radio? ........................................................ 11
2.4 Inputs ............................................................................................................................. 12
2.4.1 Digital Inputs ...................................................................................................................... 12
2.4.2 Pulse Inputs ......................................................................................................................... 12
2.4.3 Shaft Encoder Inputs ........................................................................................................... 14
2.4.4 Pulse Rates .......................................................................................................................... 14
2.4.5 Analog Inputs ...................................................................................................................... 15
2.4.6 Setpoint Status .................................................................................................................... 17
2.4.7 Supply Voltage ................................................................................................................... 17
2.4.8 Low Supply Voltage Alarm (Supply LowVolts) ................................................................ 17
2.4.9 Supply Failure ..................................................................................................................... 17
2.4.10 Communications Failure ..................................................................................................... 17
2.5 How to Design a Remote Monitoring System ............................................................... 18
2.5.1 Achieving reliable radio transmission ................................................................................ 18
2.5.2 How far will the radio transmit? ......................................................................................... 19
2.6 Calculating Power Consumption ................................................................................... 19
2.7 Security Considerations ................................................................................................. 22
3 HARDWARE INSTALLATION -------------------------------------------------------------- 23
3.1 How to mount the 905K ................................................................................................. 24
3.2 Antenna Installation ....................................................................................................... 24
3.2.1 Dipole and Collinear antennas. ........................................................................................... 26
3.2.2 Yagi antenna. ...................................................................................................................... 26
3.3 Connection Plug ............................................................................................................. 27
PL1-K Plug Lead ............................................................................................................................. 28
3.4 Power Supply Installation .............................................................................................. 28
3.4.1 External Power .................................................................................................................... 28
3.4.2 Battery Pack BU-5 .............................................................................................................. 29
3.4.3 External Battery Supplies ................................................................................................... 30
3.5 Input Signal Connections ............................................................................................... 30
3.5.1 Digital/Pulse Inputs ............................................................................................................. 30
3.5.2 Shaft Encoder Connections ................................................................................................. 31
3.5.3 Analog Input ....................................................................................................................... 31
3.5.4 RS232 serial port ................................................................................................................ 33