Westermo RM-505U-K - Manual (Page 7)

man_505U-K_1.4.doc Dec 2008
    ELPRO Technologies Pty Ltd 2008 Page 7
• Setpoint Status (digital signal set or reset depending upon the value of the analogue signal
compared to a high and a low setpoint value configured in the 505K)
• Supply Low Voltage (digital signal set when supply voltage is low).
• Supply Voltage (analogue value)
• Pulse Rate (analogue value proportional to rate of pulse input - available for both pulse
inputs)
1.2 Power Supply
The power consumption of the 505K is very small as it conserves power by reverting to
“sleep” mode between transmissions. The 505K can be powered from a 6 - 30 VDC supply.
An optional 9VDC battery pack, the BU-5-2 is available to power the 505K. The battery
supply uses six AA alkaline batteries. More than one BU-5-2 battery pack can be connected
together to supply a 505K. Other battery supplies can also be used to power the 505K,
including a solar panel supply.
The 505K unit provides an internal alarm on low supply voltage - this alarm may be
transmitted by radio for warning purposes. The user can configure the voltage at which the
low voltage alarm activates.
The 505K generates a 24VDC, 50mA supply for powering the analogue loop. This supply is
designed to power an analogue loop only and should not be used for any other purpose.
1.3 Radio Transmitter
The 505K has an internal radio transmitter that operates on a unlicensed radio channel at
869.4 – 869.65 MHz. A radio licence is not required for the 505K in many European
countries and has an operating range of up to five kilometres.
It is suitable for use in utility industries such as electricity, water and gas, as well as a cost
effective solution for short range applications in factories and industrial plants.
To extend radio range, 105U modules can be used as repeaters. Up to five repeaters can be
configured for each input-to-output link. The configuration is done at the 505K module
where the input signal is - no additional configuration is required at the 105U modules. The
transmitted radio message will include the address of repeater modules - modules with these
addresses will re-transmit the messages.
1.4 Configuration
Each module must be configured before it can be used. Configuration is performed using a
PC (or a laptop computer) connected to the module via the internal RS232 port on the 505K.
505K configuration software is required and is provided with each order.
Configuring a module requires the entering of “input mappings” and setting operating
parameters for each input. An “input mapping” links an input signal to an output channel at a
remote module (or a “destination address”). An input mapping is entered for each input
signal (external and internal) which is used. Mappings may be inverted such that the output is
the reverse value of the input.