The sat-nms Antenna Control Unit (Outdoor Module) is an antenna controller / positioner with optional satellite tracking support. It may be operated as a stand alone unit or in conjunction of the sat-nms ACU-IDU, a PC based indoor unit which offers extended tracking capabilities and a full featured visualization interface. The ACU-ODM is designed as a closed, compact module, prepared for mounting on a 35mm DIN rail.

Below the top view and connector layout of the ACU outdoor module is shown. Except the network connector which is a standard 10-Base-T Ethernet socket, all connectors are Phoenix Contact Combicon plugs / clamps.

Inside, the ACU consists of a main board and two or three interface boards with the circuitry for the position sensors. These boards are different for each type of position sensor. Actually interfaces for three types of position encoders are available with the sat-nms ACU:

• resolvers
• SSI digital position encoders
• analog voltage based sensors

Additional there are expansions boards available to realize a fourth axis. There are two boards necessary to realize a full axis control:

• axis control board as interface to the motor driver
• position sensor board (resolvers or digital or analog voltage sensors)

You have to decide at date of order which interfaces you need.

The sat-nms ACU-ODM is powered by 2 different power supplies:

• 24V ACU: for ACU internal use, especially for the core processor
• 24V EXT: for external signals, e.g. limit switches, drive signals etc. By this a maximal reliability of the sat-nms ACU-ODM is ensured.