
6
Explanation of the selection tables
The tables on the following pages list the encoders suited for
individual motor designs. The encoders are available with
dimensions and output signals to fi t specifi c types of motors (DC
or AC).
Rotary encoders for mounting on motors
Rotary encoders for motors with forced ventilation are either built
onto the motor housing or integrated. As a result, they are
frequently exposed to the unfi ltered forced-air stream of the motor
and must have a high degree of protection, such as IP 64 or better.
The permissible operating temperature seldom exceeds 100 °C.
In the selection table you will fi nd:
• Rotary encoders with mounted stator couplings with high
natural frequency—virtually eliminating any limits on the
bandwidth of the drive
• Rotary encoders for separate shaft couplings, which are
particularly suited for insulated mounting
• Incremental rotary encoders with high quality sinusoidal
output signals for digital speed control
• Absolute rotary encoders with purely digital data transfer or
complementary sinusoidal incremental signals
• Incremental rotary encoders with TTL or HTL compatible
output signals
• Information on rotary encoders that are available as safety-
related position encoders under the designation Functional
Safety .
For selection table see page 10
Rotary encoders for integration in motors
For motors without separate ventilation, the rotary encoder is built
into the motor housing. This confi guration places no stringent
requirements on the encoder for a high degree of protection. The
operating temperature within the motor housing, however, can
reach 100 °C and higher.
In the selection table you will fi nd
• Incremental rotary encoders for operating temperatures up to
120 °C, and absolute rotary encoders for operating temperatures
up to 115 °C
• Rotary encoders with mounted stator couplings with high
natural frequency—virtually eliminating any limits on the
bandwidth of the drive
• Incremental rotary encoders for digital speed control with
sinusoidal output signals of high quality—even at high
operating temperatures
• Absolute rotary encoders with purely digital data transfer or
complementary sinusoidal incremental signals
• Incremental rotary encoders with additional commutation
signal for synchronous motors
• Incremental rotary encoders with TTL-compatible output
signals
• Information on rotary encoders that are available as safety-
related position encoders under the designation Functional
Safety .
For selection table see page 8
Antriebsgeber_en_2013.indd 6 12.11.2013 06:53:58
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