ElmoMC SimplIQ Digital Servo Drives-Bell Command Reference - Manual (Page 37)

Command Description
6: Main feedback entry used as input for digital halls signals
7-11: Reserved
CA[25] Motor direction:
0: Keep the original motor direction, as connected by user.
1: Reverse phase driving.
The effect of CA[25] is to set the direction of torque/force for positive
current demand.
CA[28] DC motor:
0: Three-phase brushless motor, Uses the M1, M2, and M3 motor
terminals.
1: DC motor — do not perform commutation. Current will flow
continuously from the M1 motor connector pin of the servo drive
to the
M2 terminal. The C terminal conducts no current.
2: Two phase motor (stepper). One phase is connected between the M1
and M2 terminals, and the other phase is connected between M3 and
M4
Table 3-6: CA Vector - Commutation Setup Parameters
Command Description
CA[15] Signal frequency for “No Hall” commutation search process. This
signal is derived from the sampling time, according to the following
formula:
Time = 128 * TT[1] * 2
CA[15] * 1e-6. The frequency is 1/Time Hz.
CA[24] The minimum motor movement to perform result analysis, in counts.
When this variable is too low, the commutation search process might
fail (MF=0x10,000).
CA[26] Starting torque for motor-on commutation search process in
percentages. Starting torque = (CA[26]/100))*CL[1]
CA[27] Maximum acceptable number of iterations for auto-phasing process.
If the process fails due to overload (motion amplitude is less than
CA[24]), the auto-phasing may be repeated CA[27] times, with the
current being doubled at every iteration. If the peak current (PL[1]) is
reached at any attempt, the auto-phasing process will stop even if
CA[27] allows more iterations.
Table 3-7: CA Vector - Automatic Commutation Search Parameters, no Hall Sensors
SimplIQ for Steppers Command Reference Manual Alphabetical Listing
MAN-STECR (Ver. 1.1)
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