Siemens SINAMICS G120D - Setting a Non Standard SSI Encoder

Appendix
A.8 Setting a non standard SSI encoder
Converter with control units CU250D-2
362 Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
A.8
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
measurement 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.
p0422[1]
Absolute encoder linear measuring step resolution
(factory setting: 100 [nm])
Sets the resolution of the absolute position for a linear absolute encoder.