sat-nms ACU19: complete antenna controller system for DC-Motors integrated in a 1RU
19inch rack mount case for indoor use
For detailed description please refer to the sat-nms documentation CD or
www.satnms.com/doc
Main benefits of the sat-nms ACU are:
The ACU outdoor unit is able to act as a standalone antenna control and tracking system
without an indoor unit required.
The ACU provides an Ethernet interface using the TCP/IP and HTTP Internet protocols. It
can be controlled using any PC providing an Ethernet interface and a web browser like the
Microsoft Internet Explorer. The ACU runs a web server which acts as a user interface to the
antenna controller.
The ACU is prepared to read the receive level of a sat-nms beacon receiver through the
TCP/IP interface.
The flexible interface design of the ACU enables it to control most types of motor driving
antennas for geostationary satellites. Supported motor controllers are (configurable in the
field):
Power relays: This simple solution is suitable for antennas using 2-speed AC motors.
Frequency inverters: Speed and acceleration ramps are programmed into the inverter
module with this solution.
Servo controllers: Used for DC motors at small antennas. Supported position sensors are
(separate hardware interface modules for each axis:
Resolver Interface: The resolver interface module contains a resolver to digital chip which
does the decoding of the resolver sin/cos signals.
SSI Interface: SSI is a high speed serial interface used by modern digital position encoders.
DC Voltage Interface: The third position encoder interface module contains an A/D
converter which is suited to measure the DC voltages produced by simple inductive angle
encoders. This application is for small antennas especially in the SNG business.
The paragraphs below give a short overview to the contents of the documentation. A subset of
this documentation is stored on the device itself, the complete documentation is available on the
sat-nms documentation CD and at
www.satnms.com
.
Safety Instructions
: This chapter gives an overview about the safety precautions that have
to be observed during installation, operation and maintenance.
Unit Overview
: The installation chapter gives informations about the different modules that
are integrated in the ACU (not ACU-ODM and ACU19).
Installation/Start-up
: The installation chapter guides through the installation and setup of the
ACU outdoor module. It describes the mechanical concept of the ACU and the assignment of
the ACU's connectors. It gives you informations about the starting up procedure. Finally you
learn in this chapter how to set the ACU's IP address, which is a essential precondition to
operate the ACU by means of a web browser.
Operation
: The sat-nms ACU is operated using a standard web browser like the Internet-
Explorer on MS Windows based computers. The user interface design is straight forward and
clearly structured. Operating the ACU is mostly self-explanatory. Nevertheless, the
(C) 2022, SatService GmbH
www.satnms.com
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