Lenze SimpleServo 94, User Manual

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5.1.4 P4 - Motor Feedback / second loop encoder input
P4 is a 15-pin DB connector that contains connections for Hall effect sensors and
encoder feedback. Refer to Table 5 for connector pin assignments. Encoder inputs
on P4 have 26LS32 or compatible differential receivers for increased noise immunity.
Inputs have all necessary filtering and line balancing components so no external noise
suppression networks are needed.
All conductors must be enclosed in one shield and jacket around them. Lenze
recommends that each and every pair (for example, EA+ and EA-) be twisted. In order
to satisfy CE requirements, use of an OEM cable is recommended. Contact your
SimpleServo representative for assistance.
The SimpleServo buffers encoder feedback from P4 to P3. Encoder Feedback
channel A on P4, for example, is Buffered Encoder Output channel A on P3. The Hall
sensors from the motor must be wired to the 15-pin connector.
WARNING!
Use only +5 VDC encoders. Do not connect any other type of
encoder to the SimpleServo reference voltage terminals. When using
a front-end controller, it is critical that the +5 VDC supply on the
front-end controller NOT be connected to the +5 VDC supply on the
SimpleServo, as this will result in damage to the SimpleServo.
Note
• SimpleServo inputs are compatible with single-ended or open-
collector type hall sensors. If you have these type of hall sensors
just connect them to “HA+”, “HB+”, “HC+” and leave “HA-,HB-,HC-”
inputs unconnected. You don’t need to supply pull-up resistors in
case the hall sensors are open-collector. Necessary pull-up circuits
are already provided inside the SimpleServo amplifier.
• Encoder connections must be full differential. SimpleServo doesn’t
support single-ended or open-collector type outputs from the
encoder.
• An encoder resolution of 2000 PPR or higher is recommended for
optimum performance.