ElmoMC SimplIQ Digital Servo Drives-Bell Command Reference - Manual (Page 28)

AS[N] - Analog Input Offsets Array
Purpose:
Compensates for offsets of the analog signals, which may be caused by the limited
precision of the
SimplIQ electronics.
At times, the signals at the A/D converter may be offset: that is, the A/D reading may
be non-zero when a zero reading is desired. This offset may disturb normal operation.
An offset reference or feedback signal may cause a motor to “crawl” when a complete
stop is desired.
The analog offset subtracts from the analog input as follows:
Corrected signal = A/D reading – Analog offset
AS[1] - Analog input offset command for analog input #1, in volts
AS[2] - Analog input offset command for analog input #2, in volts
Attributes: Type: Parameter, Real
Source: Program, RS-232, CANopen
Restrictions: None
Default values:
0 (RS), Non-volatile
Range: [-10.0…10.0] 5 mV resolution
Unit modes: All
Activation: Immediate
SimplIQ: Similar
Notes:
To null the input offsets of the drive, short the analog inputs
to ground. Then set AS[1] = AN[1] and AS[2] = AN[2] for
analog input #1 and #2 respectively.
Each of Elmo’s SimplIQ drives support a different number of
analog inputs. For specific details consult the drive’s
Installation Guide.
See also:
AG[N] , AN[N]
Application notes:
Speed reference generation
Open loop stepper control
SimplIQ for Steppers Command Reference Manual Alphabetical Listing
MAN-STECR (Ver. 1.1)
20