In feed-through mode (listening-in), Figure a, Figure a, f – HEIDENHAIN PWM 20 User Manual

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August 2014

Overview of cables and adapters

3.14 Incremental 1 Vpp interface with commutation for synchronous and linear drives

in feed-through mode (listening-in)

3.14.1 Adapter for monitoring (listening-in) between TNC and incremental rotary encoder in synchronous
motors (e. g. ERN 1387 with AB track and CD commutation track)

Figure A

Measured at the control input (25-pin speed encoder input):

Note

In the adapter ID 1075630-01 the temperature wires lead from input IN to output OUT
(PIN 5 IN / PIN 5 OUT and PIN 6 IN / PIN 6 OUT).

Synchronous motors

Commutation signals

1 Vpp Zn/Z1 ABCD