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16
1.1.7
Transmit Motor Control Circuit
The transmit motor is a PM type, two-phase bi-polar motor. The stepping signal and chopping current con-
trol signals (pTAPH, pTBPH, pTA10, pTA11, pTB10 and pTB11) are sent to the chopper drive circuit, com-
prised of IC36, IC37 and its peripheral circuitry, from IC3 SHINE output port. The motor is powered by +24
VDC and is driven by a 1/2-phase excitation, and greater step division is provided by controlling the phase
circuit in steps (micro-step control).
trol signals (pTAPH, pTBPH, pTA10, pTA11, pTB10 and pTB11) are sent to the chopper drive circuit, com-
prised of IC36, IC37 and its peripheral circuitry, from IC3 SHINE output port. The motor is powered by +24
VDC and is driven by a 1/2-phase excitation, and greater step division is provided by controlling the phase
circuit in steps (micro-step control).
Tx Stepper
Motor
Motor
Tx Motor Driver Circuit Block Diagram
SHINE
IC3
Motor
Driver
IC36
+24V
Motor
Driver
IC37
+24V
R371
R370
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