Lenze E94P PositionServo with MVOB - Manual (Page 25)

S94H201E_13426446_EN L 23
Interface
4.1.4 P4 - Motor Feedback
For encoder-based 940 drives, P4 is a 15-pin DB connector that contains connections for an incremental
encoder with Hall emulation tracks or Hall sensors. For synchronous servo motors, Hall sensors or Hall
emulation tracks are necessary for commutation. For pin assignments, refer to the Table P4A. 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.
For resolver-based 941 drives, P4 is a 9-pin DB connector for connecting resolver feedback and thermal
sensor. For pin assignments, refer to the Table P4B. The resolver feedback is translated to 65,536 counts
per revolution.
All conductors must be enclosed in one shield with a 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 Lenze representative for assistance.
The PositionServo buffers encoder/resolver feedback from P4 to P3. For example, when encoder feedback
is used, channel A on P4, is Buffered Encoder Output channel A on P3. For more information on this refer to
section 4.2.2 “Buffered Encoder Outputs”.
STOP!
Use only +5 VDC encoders. Do not connect any other type of encoder to the PositionServo
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 PositionServo’s +5 VDC supply,
as this will result in damage to the PositionServo.
NOTE
• The PositionServo encoder inputs are designed to accept differentially driven hall signals.
Single-ended or open-collector type hall signals are also acceptable by connecting
“HA+”, “HB+”, “HC+” and leaving “HA-,HB-,HC-” inputs unconnected. The user does
not need to supply pull-up resistors for open-collector hall sensors. The necessary pull-
up circuits are already provided.
• Encoder connections (A, B and Z) must be full differential. The PositionServo does not
support single-ended or open-collector type outputs from the encoder.
• An encoder resolution of 2000 PPR (pre-quadrature) or higher is recommended.
P4A Pin Assignments (Encoder Feedback - E94P Drives)
Pin Name Function
ENCODER
1
8
P4
15
9
1 EA+ Encoder Channel A+ Input (1)
2 EA- Encoder Channel A- Input (1)
3 EB+ Encoder Channel B+ Input (1)
4 EB- Encoder Channel B- Input (1)
5 EZ+ Encoder Channel Z+ Input (1)
6 EZ- Encoder Channel Z- Input (1)
7 GND Drive Logic Common/Encoder Ground
8 SHLD Shield
9 PWR Encoder supply (+5VDC)
10 HA- Hall Sensor A- Input (2)
11 HA+ Hall Sensor A+ Input (2)
12 HB+ Hall Sensor B+ Input (2)
13 HC+ Hall Sensor C+ Input (2)
14 HB- Hall Sensor B- Input (2)
15 HC- Hall Sensor C- Input (2)
(1) Refer to Note 1, Section 4.1.7 - Connector and Wiring Notes
(2) For asynchronous servo motor, an incremental encoder without Hall effect sensors (commutation tracks) can be used.