Siemens SINAMICS G120D - Setting a Non Standard SSI Encoder

Appendix
A.7 Setting a non standard SSI encoder
Converter with control units CU250D-2
378 Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
A.7
Setting a non standard SSI encoder
Proceeding: manually configuring the encoder
1. Set p0010 = 4.
This allows the encoder parameters to be accessed.
2. Configure the encoder using the table below.
3. Set p0010 = 0.
Parameter
Description
p0400[1]
Encoder type selection
(Factory setting: 0)
Selects the encoder from the list of encoder types supported by the firmware of the Control Unit.
0
No encoder
3081
SSI, Singleturn, 24 V
3082 SSI, Multiturn 4096, 24 V
p0404[1]
Encoder configuration effective (Factory setting: 0000 0000 0010 0000 0000 0000 0000 0000 bin)
Bit
Signal name
1 signal
0 signal
00
Linear encoder
Yes
No
01
Absolute encoder
Yes
No
02
Multiturn encoder
Yes
No
03
Track A/B sq-wave
Yes
No
09
SSI encoder
Yes
No
12
Equidistant zero mark
Yes
No
13
Irregular zero mark
Yes
No
14
Distance-coded zero mark
Yes
No
21
Voltage level 24 V
Yes
No
p0407[1]
Linear encoder grid division
(Factory setting: 16000 [nm])
Sets the grid division for a linear encoder.
p0408[1]
Rotary encoder pulse No.
(Factory setting: 2048)
Sets the number of encoder pulses.
p0410[1]
Encoder inversion actual value (Factory setting: 0000 bin)
Bit 00
1 signal: Invert speed actual value
Bit 01
1 signal: Invert position actual value
p0418[1]
Fine resolution Gx_XIST1 (in bits)
(factory setting: 2)
The parameter applies for the following process data:
• Gx_XIST1
• Gx_XIST2 for reference mark or flying measurement
The fine resolution specifies the fraction between two encoder pulses. Depending on the physical measure-
ment principle, an encoder pulse can be broken down into a different number of fractions (e.g. squarewave
encoder: 2 bit = resolution 4).
p0419[1]
Fine resolution absolute value Gx_XIST2 (in bits) (factory setting: 2)
p0421[1]
Absolute encoder rotary multiturn resolution
(factory setting: 4096)
Sets the number of rotations that can be resolved for a rotary absolute encoder.