Steffes Transceiver - Manual (Page 5)

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GENERAL OPERATION
General Information
This Steffes Power Line Carrier (PLC) Transceiver is to be
installed in your customer's home or business to provide
communication to and control of Steffes heating systems and/or
other devices. The PLC Transceiver is used for communicating
information through the local electric circuits and must be wired
into the line voltage power serving the installation.
The transceiver can be installed as a transmitter OR a receiver.
In transmit mode, it receives a signal from an external control
device such as a power company’s meter or radio receiver, a time
clock, or other control device. The transmitter interprets the signal
and sends the signal to any Steffes receivers installed on the same
distribution transformer. The transmitter also collects and transmits
outdoor temperature data. Steffes heating systems have a built-in
receiver. There are also relays in the transceiver which can be used to control other loads.
In receive mode, the transceiver reads and translates the signal from the transmitter. It uses the information
received to control other electric load devices by turning power off and on to the device with its relays. Other
controlled-load devices might be an electric water heater, electric baseboard heater, electric clothes dryer, etc.
NOTE: PLC Communication is very reliable in most applications but can be affected and hindered
by connection method used, electrical layout of the application, operation of other
equipment in the same electric system, dirty power, etc. Steffes Corporation does not
guarantee effective communication of the PLC system in all applications and is not
responsible for communication issues.
SPECIFICATIONS
Electrical
Control Circuit:
Line Power (single-phase) .................................................................................. 120 or 240/208 VAC
Current
.............................................................................................................0.2 amps
Communication Channels .............................................................................................................. 15
Transmitter Frequency .............................................................................................. 13.3 – 15.2 kHz
Low Voltage Input Switch Loading from R terminal to all other low voltage terminals .............. 1-2 mA
Load-Control Relays:
Line Power (single-phase) .................................................................................. 120 or 240/208 VAC
Maximum Load per Relay ..................................................................................................... 24 amps
Maximum Controlled Motor Load @ 120VAC ............................................................................. 1 HP
Maximum Controlled Motor Load @ 208 or 240 VAC .............................................................. 1.5 HP
NOTE: In single-phase applications, the most effective circuit board operation voltage is 240/208 VAC.