Applied Motion RS-232 - Manual (Page 71)

71 920-0002 Rev. I
2/2013
Host Command Reference
EI - Input Noise Filter
Compatibility: ST, STM, SV7, SVAC3, STAC5 and STAC6
Affects:
“Input Noise Filter” parameter
See also: CM, ER, FE and HW commands.
Sets or requests the Input Noise Filter parameter. This parameter acts as a low-pass filter, rejecting noise above
the specified frequency.
NOTE: On STAC5-S and SVAC3-S drives, this parameter setting affects inputs X1 - X4, and is an alternative to
the FI command if input noise filtering is required.
STM17
Given a cutoff frequency, an appropriate EI value may be calculated as follows (where ‘f’ is the target cutoff
frequency):
EI = 9,000,000 / f
ST, STM23 / 24, SV7, SVAC3, STAC5, STAC6
Given a cutoff frequency, an appropriate EI value may be calculated as follows (where ‘f’ is the target cutoff
frequency):
EI = 15,000,000 / f
Command Details:
Structure EI {Parameter #1}
Type BUFFERED
Usage READ/WRITE
Non-Volatile YES
Register Access none
Parameter Details:
Parameter #1 Encoder Noise Filter Constant
- units
- range
0 - 255
Examples:
Command Drive sends Notes
EI128 - (STM17) Set encoder noise filter to 70.3 kHz (9,000,000 / 128)
EI128 - (STM23) Set encoder noise filter to 117.2 kHz (15,000,000 / 128)
EI EG=128