User Manual

TMCM-1260 Hardware Manual • Hardware Version V1.10 | Document Revision V1.20 • 2018-05-17
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9 Motor driver current
The on-board stepper motor driver operates current controlled. The driver current may be programmed
in software with 32 effective scaling steps in hardware.
Explanation of different columns in table below:
Motor current set-
ting in software
(TMCL)
These are the values for TMCL axis parameter 6 (motor run current) and
7 (motor standby current). They are used to set the run / standby current
using the following TMCL commands:
SAP 6, 0, <value> // set run current
SAP 7, 0, <value> // set standby current
(read-out value with GAP instead of SAP. Please see separate TMCM-1260
firmware manual for further information)
Motor current I
RMS
[A]
Resulting motor current based on motor current setting
Available motor current settings
Motor current setting
in software (TMCL)
Current scaling step
(CS)
Motor current I
COIL
[A]
peak
Motor current I
COIL
[A]
RMS
0. . . 7 0 0.254 0.180
8. . . 15 1 0.508 0.359
16. . . 23 2 0.762 0.539
24. . . 31 3 1.016 0.718
32. . . 39 4 1.270 0.898
40. . . 47 5 1.523 1.077
48. . . 55 6 1.777 1.257
56. . . 63 7 2.031 1.436
64. . . 71 8 2.285 1.616
72. . . 79 9 2.539 1.795
80. . . 87 10 2.793 1.975
88. . . 95 11 3.047 2.154
96. . . 103 12 3.301 2.334
104. . . 111 13 3.555 2.514
112. . . 119 14 3.809 2.693
120. . . 127 15 4.063 2.873
128. . . 135 16 4.316 3.052
136. . . 143 17 4.570 3.232
144. . . 151 18 4.824 3.411
152. . . 159 19 5.078 3.591
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