Connection Of Linear Encoders; Connection Of Rotary Encoders For Speed Control - HEIDENHAIN TNC 415 Technical Manual

2.3.1 Connection of linear encoders

The LE 425 can process up to five encoders with sinusoidal output signals (7 to 16 µA
Max. input frequency: 50 kHz
Cable adapter, complete
Coupling (female) 9-pin / D-sub connector (male) 9-pin
or
Connecting cable, with one connector
D-sub connector (male) 9-pin

2.3.2 Connection of rotary encoders for speed control

To measure ballscrew speed, the TNC requires HEIDENHAIN rotary encoders with 1 Vpp output
signals and a 5 V power supply. The signal is interpolated by a factor of 256 in the control. When
selecting the line count, remember that the input frequency must no exceed the limit of 200 kHz at
the LE. The line count should be selected so that the number of grating periods for speed control is
at least 5 times that for position control.
Talk with your drive supplier and HEIDENHAIN about possible mounting configurations.
For various types of motors HEIDENHAIN offers the ERN 281 modular rotary encoder with a special
assembly kit that enables the machine tool builder to install the rotary encoder on the motor. The
mounting procedure is quite simple: the motor housing is extended by the length of the spacer in
the assembly kit, and the lid is then re-fitted.
A straightforward solution with a standard encoder from the ROD series can be applied to modify
the first machine when using a drive type for which no assembly kit is yet available.
Max. input frequency: 200 kHz
Cable adapter, complete
Connector (female) 12-pin / D-sub connector (pin) 15-pin
or
Cable adapter, complete
Coupling (female) 12-pin / D-sub connector (male) 15-pin
or
Connecting cable with one connector
D-sub connector (pin) 15-pin
11-6 TNC 407/TNC 415/TNC 425 2 Mounting and electrical installation
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pp
(Max. 60 m)
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(Max. 60 m)
Id.-Nr. 268 371 ..
(Max. 60 m)
Id.-Nr. 267 268 ..
(Max. 60 m)
Id.-Nr. 267 267 ..
(Max. 60 m)
Id.-Nr. 268 372 ..
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