7
SCU32
User Manual
9M02-8679-A001-EN
Version 3.0
2.
Radio Remote Control Controller
2.1
General
The radio remote control controller connects over its interface to external actuators in order perform the following
functions: cyclically read the status of these actuators, transform this data into a serial data string, form a telegram
by adding system relevant data, and transmit this telegram via a RF signal to its corresponding receiver.
2.2
SCU32 Controller
The SCU32 controller allows the transmission of up to 32 + 4 digital commands. The controller interface to the
external actuators is realized by an optocoupler interface board, providing a galvanic isolation and protecting the
microprocessors against overvoltage damage by the external signal source.
Figure 1: SCU32 Controller with Han Connector
2.3
System Address
In an industrial radio remote control system, each controller/receiver pair shares a common, unique system
address. The system address is contained in every telegram sent by the controller and is checked every time a
RF signal is received. In order for the processors in the receiver to activate a command (relay), the system
address in the telegram and the system address stored in the receiver must match. This is a safety measure to
ensure that the receiver interacts only with its assigned controller.
CAUTION
Conflict of Addresses
•
The operator must ensure that the system address is used for a single pair of controllers and
receivers.
•
If more than one receiver or controller is used to control a machine or system, the operator
must take precautions so that only a single controller operates at each time.
•
In the event of a breach of this undertaking, the customer or the operator, respectively, is
liable for the resulting damage/loss and they shall indemnify the manufacturer against all
third-party liability claims.
2.4
Radio Transmission
The transmission between the controller and receiver occurs through radio communication. With regard to the
actual radio frequency being used, there are several radio frequency bands available. Within the respective
frequency band, a specific RF channel must be selected. Depending on the frequency band, a certain number of
RF channels are available. For details regarding the available RF channels, please refer to
Section 0,
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