This section provides wiring instructions for a motor equipped with a Tamagawa SA35-17/33Bit-LPS (TS5667N120/N127) absolute encoder. This encoder transmits its position data as a serial bit stream via RS-485 lines rather than A-B incremental pulses. This encoder can be utilized as high resolution incremental encoder that provides 17-bits of resolution per revolution. In addition, if this encoder is provided with continuous power with a battery backup, it functions as a high resolution absolute encoder that provides 33-bits of encoder position information. The continuous power maintains a 16-bit "turns count" register that augments the 17-bits per turn data.
Due to the additional capabilities needed to process the absolute encoder signal, these encoders are only supported on the "Enhanced" versions of the Guidance Controllers.
For information on configuring this type of encoder, see the Software Setup section of the Controller Software section of the PreciseFlex Library.
Table 34-71 shows the wiring instructions for the Encoder Connectors.
| Wire Color | Signal Name | G1000 Connector Pin |
|---|---|---|
|
BROWN |
BATTERY+ |
4 |
|
BROWN/BLACK |
BATTERY - |
7 |
|
GRAY |
FG |
10 |
|
BLUE |
PS+ |
2 |
|
BLUE/BLACK |
PS- |
3 |
|
RED |
VCC |
1 |
|
BLACK |
GND |
7 |
If the encoder is to be used in absolute mode, a battery must be connected to the Motor Power Input Connector. See the information on that connector for detailed pin outs and plug types. Table 34-72 contains information on the required battery power.
| External Battery Specification | |
|---|---|
|
Maximum voltage |
4.75 V |
|
Typical voltage |
3.6 V |
|
Alarm trigger voltage |
3.1 V |
|
Current for each encoder |
3.6 uA |