Encoder Cable; Description Of The Encoder Interfaces; Fig. 8 Encoder Cable Length - KEB COMBIVERT S6 Instructions For Use Manual

8.6 Encoder cable
8.7 Description of the encoder interfaces
PIN Signals Description
1, 2, 3, A+/- Only channel A:
4 B+/-
Input for two sine-wave, shifted by 90° differential signals with 1 Vpp, maximum 200 kHz.
Cos+/-
Single-ended (e.g. Cos+ against GND):
Sin+/-
Constant component 2.5 V ±0.5 V
Differential (e.g. Cos+ against Cos-):
Constant component 0 V ±0.1 V
signal level Uss=0.6 V...1.2 V
Channel A:
Input for square-wave incremental signals according to RS485 maximum 200 kHz.
Channel B:
Input for square-wave incremental signals according to RS485 maximum 500 kHz.
Incremental encoder simulation: Position changes of channel A are output to channel B with
two 90° shifted RS485 signals.Maximum output frequency 500 kHz.
5, 6 N+/- Only channel A:
Data+/-
Input zero signal once per revolution.
Differential signal level (N+ ... N-):
• higher 50 mV: zero signal is active
• from 50 mV to -50 mV: undefined
• lower -50 mV: zero signal is inactive
Signal length 330°...360° of the signal length of the incremental signals.
Channel A and B:
Input zero signal or data RS485.
Zero signal is 1-active, if signals A and B are also 1-active.
only channel B:
Output zero signal RS485.
Zero signal is 1-active, if signals A and B are also 1-active.
Is output, if the position on channel A is 0°.
ma_dr_s6-cu-p-inst-20156056_en
The maximum encoder cable length due to the voltage drop on the supply line is
calculated as follows:
max. encoder cable length =
Fig. 8: Encoder cable length
The supply voltage depends on the set encoder. The other values can be found in
the data sheet of the encoder and the encoder cable.
Pre-assembled encoder cables:
• offer the best protection against interference.
• save installation time.
• are available in cable lengths of 5 m, 10 m, 15 m, 20 m, 25 m and 30 m.
Encoder interfaces | 8
voltage supply - min. encoder voltage
max. encoder current • 2 • wire resistor per meter
37