Interface
Cable length:
Depending on the desired output circuit, we recommend following cable lengths:
Interface and output circuit | max. cable length | Connected to |
---|---|---|
Parallel CMOSmL | 2m | PLC/IPC1) |
IParallel | 100m | PLC/IPC1) |
SSI | up to 1200 m | PLC/IPC1) |
RS 422 /RS 485 | (> 50 m depending on frequency) |
1)IPC = lndustrial PC
Notes:
- Depending on the application the max. allowed cable length can be shorter, especially in areas with strong electrical noise .
- Always use shielded cables
- The core diameter of the signal cores should be 0 0, 14 mm2
- The core diameter of the voltage supply cores should be large enough depending on the cable length, that the voltage supply of the encoder is high enough and the signals do not go below the minimum levels!
Connection - precautions
For the connection of the shield braids, refer to the logic control documentation. In all cases, for grounding, the braids must be covered through 360°. All unused conductors must be connected to the same potential at both ends. Keep the encoder connection cables as far away from the power cables as possible and avoid running them in parallel. Finally, for the same regulated power supply, only connect encoders drawing the current that the power supply can deliver. Group the signals of the same type by pair, CLK+ with CLK-, DATA+ with DATA-.
Type of connection and recommended input circuit
BiSS Sensor Communication Bi-directional and fully-digital
BiSS is a fully-digital and bi-directional sensor interface. lt defines communication between one master and several slaves (sensors) in industrial control systems. BiSS manifests a new standard in technology and is available license-free (GPL). Due to its high performance, it constitutes an efficient alternative to the standard combination of data interface and analog sine/cosine incremental output.
BiSS only needs a total of 6 lines (4 data, 2 power), does not require any hardware for analog signals (cable(s)/drive interpolation electronics) - and so helps to reduce system costs. Bus Networking: Up to 8 sensors can be connected to a bus-master. Wiring and control cost is considerably reduced for multi axe applications.