J1.1, J2.1, J3.1 Limit switch connectors
Connector Type: Phoenix contact mini combicon FMC 1,5/4-ST-3,5 High and Low Limit switch for elevation axis. The switches are connected directly to the input pairs without any external ground or supply cabling. The ACU treats a closed contact as OK, contacts have to be opened to indicate the 'limit reached' condition. Please note, that the left/right azimuth and polarization limit switches have to be swapped when the antenna is operated at the southern hemisphere.
| connector | pin | signal | description | type |
|---|---|---|---|---|
| J1.1 | 1 | AZ Low | azimuth left limit (view from behind antenna) | IN |
| 2 | GND EXT | |||
| 3 | AZ High | azimuth right limit (view from behind antenna) | IN | |
| 4 | GND EXT |
| connector | pin | signal | description | type |
|---|---|---|---|---|
| J2.1 | 1 | EL | Lowlower limit elevation | IN |
| 2 | GND EXT | |||
| 3 | EL High | upper limit elevation | IN | |
| 4 | GND EXT |
| connector | pin | signal | description | type |
|---|---|---|---|---|
| J3.1 | 1 | PL Low | polarisation left limit (view from behind antenna) | IN |
| 2 | GND EXT | |||
| 3 | PL High | polarisation right limit (view from behind antenna) | IN | |
| 4 | GND EXT |
J1.2, J2.2, J3.2 Motors
Connector Type: Phoenix combicon MSTB 2,5/ 3-ST-5,08 DC motor driver output. The motor interface is designed for up to 15A/24V. Use shielded cable only to connect the motors. Connect shield to 'PE' Pin. Take care, that the shield is NOT connected on the motor end of the cable.
| connector | pin | signal | description | type |
|---|---|---|---|---|
| J1.2 | 1 | Motor AZ+ | Azimuth Motor | +IN |
| 2 | PE | |||
| 3 | Motor AZ- | Azimuth Motor | -IN |
| connector | pin | signal | description | type |
|---|---|---|---|---|
| J2.2 | 1 | Motor EL+ | Elevation Motor | +IN |
| 2 | PE | |||
| 3 | Motor EL- | Elevation Motor | -IN |
| connector | pin | signal | description | type | | J3.2 | 1 | Motor PL+ | Polarisation Motor | +IN | | | 2 | PE | | | | | 3 | Motor PL- | Polarisation Motor | -IN |
J4 Analog beacon level input
Connector Type: SMA male The ACU19 preferably is used together with the sat-nms LBRX beacon receiver. With the sat-nms LBRX the ACU talks though UDP or TCP over IP, no additional cabling is required in this case. At J4 the ACU19 provides an analog interface to third party beacon receivers.
| pin | signal | description | type |
|---|---|---|---|
| center | level in | beacon level signal 0...10V DC | IN |
| outside | GND | signal ground |
J5, J6 and J7 Angle encoders
Connector Type: D-Sub9 male The sat-nms ACU19 provides the possibility to connect three different types of angle encoders: optical SSI encoders (S), analog potentiometers (A) and Resolvers (R). You have to decide at point of order which variant you want to have. The angle encoder type is specified by an add-on to the name of the unit. The sequence is azimuth, elevation, polarisation An example: ACU19-SSA contains SSI interfaces at azimuth and elevation axis and an analog potentiometer interface at polarisation axis. The integrated interface type is also written on a label near by the angle encoder connectors.
SSI encoder interface The SSI positional encoder may be powered from the ACU internal power supply. +5V and +24V clamps are provided at the connector. To avoid ground loops, the cable shield should be connected either to pin 1 at the ACU or to the ground at the encoder housing, never at both ends. The power supply outputs are internally fused. Be aware not to cause a short circuit. If this happens, the unit has to be opened and the fuse has to be replaced. Do not open the unit by yourself, you will loose warranty in that case.
| pin | signal | description | type |
|---|---|---|---|
| 1 | 0V | ||
| 2 | Data- | SSI data | IN |
| 3 | Clk- | SSI clock | OUT |
| 4 | +5V | encoder power supply | |
| 5 | n.c. | ||
| 6 | Data+ | SSI data | IN |
| 7 | Clk+ | SSI clock | OUT |
| 8 | n.c. | ||
| 9 | +24V | encoder power supply |
Analog angle sensor (potentiometer) interface
| pin | signal | description | type |
|---|---|---|---|
| 1 | AGND | Analog ground | OUT |
| 2 | Ref Out | Reference voltage | OUT |
| 3 | n.c. | ||
| 4 | n.c. | ||
| 5 | n.c. | ||
| 6 | INPUT | A/D converter input (center Poti) | IN |
| 7 | AGND | Analog ground | OUT |
| 8 | n.c. | ||
| 9 | n.c. |
Resolver interface The ACU resolver interface is designed for resolvers with an impedance of 100 Ohms or more and transfer factor 0.5. The interface applies 4Veff / 2000Hz to the resolver drive coil. It expects 2Veff at the sine / cosine inputs at the maximum positions.
When connecting a resolver to the ACU, please consider the following:
| pin | signal | description | type |
|---|---|---|---|
| 1 | GND | ||
| 2 | GND | resolver SIN | IN |
| 3 | GND | resolver COS | IN |
| 4 | GND | drive signal to resolver | OUT |
| 5 | n.c. | ||
| 6 | SIN | resolver SIN | IN |
| 7 | COS | resolver COS | IN |
| 8 | REF | drive signal to resolver | OUT |
| 9 | GND |
J8 Inclinometer
Connector Type: D-Sub9 male This interface is not implemented yet and is reserved for further expansions
J9 Compass
Connector Type: D-Sub9 male This interface is not implemented yet and is reserved for further expansions
J10 Remote serial
Connector Type: D-Sub9 male This interface is not implemented yet and is reserved for further expansions
J11 LAN Connector
Connector Type: RJ45 male J11 is the Ethernet 10Base-T / RJ45 connector. Use a standard network cable to connect the sat-nms ACU-RMU to an Ethernet hub. If you want to connect your computer and the ACU directly without using a hub, you need a crossover cable for this with swapped RX/TX lines.
| pin | signal | description | type |
|---|---|---|---|
| 1 | TX+ | default Ethernet cabling (10Base-T) | OUT |
| 2 | TX- | OUT | |
| 3 | RX+ | IN | |
| 4 | |||
| 5 | |||
| 6 | RX- | IN | |
| 7 | |||
| 8 |
J12 Mains input connector
Connector type: IEC male The sat-nms ACU19 already contains all internal needed power supplies. Use any standard cable type with IEC connector. As they are wide-range types it is possible to connect nearly all worldwide available single phase mains. Please refer to chapter Specifications for more detailed informations.