Lenze 9400 - Manual (Page 252)

6 Encoder evaluation
6.3 Parameter setting
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Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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6.3.8 Use of an SSI encoder at X8
This function extension is available from software version V5.0 onwards!
From software version V5.0 all encoders at X8 using the Stegmann SSI protocol are supported.
• Supported bit rates for the SSI communication: 150 ... 1000 kbits
• Supported data word widths: 1 ... 31 bits (effective)
• Supported output code of the SSI encoder: Gray or binary
• The SSI encoder can be used as position encoder or master encoder with a minimum cycle time
of 1 ms.
• The SSI encoder can be supplied via X8 up to a maximum voltage of 12 V and a maximum
current of 0.25 A.
• The SSI data words received are provided to the application via the LS_SsiEncoderX8 system
block for further processing within the function block editor.
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How to parameterise the SSI encoder at X8:
1. Set the supply voltage of the SSI encoder used in C00421 .
2. Set the selection "4: SSI encoder" as encoder type in C00422 .
3. Set the bit rate for SSI communication in C00423 .
• For SSI protocols, the permissible baud rate is reduced if the cable length is increased. A
safe bit rate must be set, depending on the length of the used encoder cable and the
electromagnetic interference level.
• Lenze setting: 400 kbits (for encoder cables with a length of up to ≈ 50 meters)
4. Set the data word width in C00424 , i. e. the number of data bits that is used for the
transmission of a complete SSI data packet.
• Lenze setting: 25 bits (Stegmann multiturn SSI encoder)
5. Optionally: Split the SSI data word received into partwords and connect a data conversion
from Gray into binary code, which may be required (see the following subchapters).
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Note!
The LS_SsiEncoderX8 SB is only provided within controllers with a MM3xx or MM4xx
memory module.