as well as IED interfacing and data concentration
tasks. The RC02 was developed as a natural progression from the RC01 RTU
which has sold over 250 units in NZ.
The RC02 RTU has been developed
to fulfil multiple telemetry roles in the power and gas industries.
The RTU features expandable I/O in addition to multiple communications
ports. It is ideal for direct I/O
The RC02 currently supports Conitel (V.23) DNP3 (V.23 and V.28).The DNP3 V28 (RS232) port
runs at 9600 baud, and supports various handshaking modes. It is compatible with a range
of Serial to Ethernet device servers, that effectively turn it into an IP compliant
RTU that can communicate over an Ethernet highway.
The RC02 is also a functional Conitel to Modbus/Toshiba/Data2179 data concentrator. In
this mode the RC02 is called the DC10. The Conitel Protocol is the slave, and the
Modbus/Toshiba/Data2179 protocols are the master. Only one of the Modbus/Toshiba/Data2179
master protocols can be active at any given time. Both RS232 and RS485/422 comms are supported
when running as a data concentrator. The DC10 is ideal for interfacing Noja Reclosers onto Conitel
All expansion cards are manufactured by
Remote Control Solutions Ltd. which allows us the flexibility of creating
customised designs for specific applications. The RC02 is manufactured by
a specialist SMD manufacturing company .
8 to 37 VDC switched mode power supply
digital inputs (one doubles as accumulator input)
output relays rated at 230VAC 1A
board power supply voltage monitoring
fully featured two or four wire interface for Conitel or DNP3
fully featured interface for DNP3
fully featured interface for Data Concentrator Functions
on board jumpers to confuse the user
configuration stored in EEPROM
RTU solution provided including IP67 Case, and 230VAC power supply
issues resolved within a few days
of 30 years of dedicated SCADA experience backing the RC02
radio support, with matching MAXON data radios available from Remote
Control Solutions Ltd.
time executive operating system
"The RC02 is ideally suited to any telemetry application, and when the price
of less than NZ$2000.00 is considered, it must warrant serious consideration."
The other important if not the most important aspect is support. We maintain
a zero outstanding incident philosophy, and do whatever it takes to keep
our software base defect free. We still realise however that the device
needs on the spot support with respect to configuration, radio installation
etc, that the customer does not want to wait for. We take the responsibility
of providing this backup support very seriously.
V DC (With reverse polarity protection)
Utilising an integrated switch mode power supply.
to 60mA depending on input voltage. (68 mA @ 13.8VDC).
to 40°C (If used in standard enclosure)
configurable Conitel/DNP3 interface. Two or four wire interface. Terminating
or non terminating line connection. Half Duplex. Adheres to V.23 standard.
2/5W data radio standard, most others supported.
RS232 (Used for DNP3) and RS485/422 ports
mm x 172mm (20 mm high)
9600 baud RS232 terminal emulator. Special PC Tool required for DNP3
Group, Tx mark, Rx mark. External Rx gating, terminating/non terminating
line, radio key enable and communication line fail-over.
All configuration parameters stored in EEPROM.
isolated digital inputs, 9-30 VDC activation.
MCD functions on eight on board DIs. ~15 msecs debounce filter.
isolated accumulator input. Also used as DI nine.
board 10-30 VDC battery monitor.
1A/230VAC output relays, arranged as 4 Trip/Close clean contact relay
pairs. Variable length output pulse.
and hardware expansion options
output relay expansion.
Digital input expansion.
Eight channel 12 bit high common mode analog input
DNP3 V.23 1200 Baud Tone Interface
DNP3 V.28 9600 Baud RS232 Interface
Accumulator I/P. ~7 msecs read resolution
Scan-In (Request to be Scanned) facility.
230VAC power supply board.
Battery backup controller board.
Maxon Synthesised VHF/UHF data radio.
Figure 1 - RC02 Functional Diagram
The functional diagram
shows the basic internal connectivity of the RC02 RTU.
Some points to note are:
voltage monitor reads the voltage directly off the power input terminal
J4, and reads inputs in the range of 10 to 30 volts DC.
switch mode power supply drives the RC02, as well as the bus cards.
SPI EEPROM is a separate device to the on board CPU based 512 byte
EEPROM. All RC02 configuration is stored in the CPU EEPROM, with the
SPI EEPROM reserved for more complex functions such as protocol conversion
The reset and
watch dog control is an independent piece of hardware that will
reset the RC02 in the event of software failure due to power supply
browns outs or other environmental conditions.
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