Notes On Commissioning Ssi Encoders - Siemens SINAMICS S120 Commissioning Manual

Commissioning

2.11 Notes on commissioning SSI encoders

Figure 2-23 Setting of the measuring socket T0 on CU320
When the drive is synchronized, the difference between the EMF/phase U and the electrical
rotor position is a maximum of 10°.
If the difference is greater, the commutation angle offset must be adjusted.
2.11 Notes on commissioning SSI encoders
Using error bits
The number and position of error bits may vary for SSI encoders. In the event of faults, error
codes may even sometimes be transferred within the position information.
It is therefore essential that you assess all the error bits present (see below for
parameterization and limitations) as otherwise an error code may be interpreted as position
information if faults are present.
Firmware and hardware (HW and FW) preconditions
● SMC20 as of FW2.4
● SME25 as of FW 2.4
● SMC30 as of FW 2.4 and HW 6SL3055-0AA00-5CA1
● CU310 as of FW2.5 SP1 and as of HW 6SL3040-0LA0x-0AA1
Types of encoder that can be connected
Table 2-18 Overview of encoder types that can be connected depending on the SIEMENS evaluation module
Encoder Incremental tracks
evaluation
through module
SMC20 sin/cos, 1 Vpp
100
Absolute position
SSI not cyclic
1)
Commissioning Manual, (IH1), 07/2007 Edition, 6SL3097-2AF00-0BP7
Power supply for SSI baud rate
encoder
5 V 100 kHz
Remarks
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Commissioning