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BSD-01C Step Motor Driver Interinar Electronics Additional information at www.interinar.com Table 1: 6-pin Header J1 Pin #

BSD-01C Instruction Manual - 55966 Functional description of BSD-01C Module

Pin Description The BSD-01C module is a complete full step driver with built-in translator suitable for driving bipolar step motors from 185 to 750mA and up to 30V. It operates in full step mode without requiring any phase-sequence tables, high frequency control lines or complex interfaces to program. BSD-01C is a Step/Direction type driver, used in variety of CNC machines. Ideal for applications where a complex microcontroller is unavailable or over-burdened. 1 SLEEP - input, active-low. When logic-low all outputs and most of the internal circuitry are disabled. When logic-high, normal operation resumes and translator is set to home state. Board has build in pull-up resistor and is shipped with normal operation mode as default. This input may be left disconnected when not used. 2 DIRECTION - input. Determines the direction of the rotation of the motor. If low was Counter Clockwise then high will be Clockwise and vice-versa. Initial direction depends on order in which motor was connected. Reversing connection order of only one phase will change the initial direction. Board has build in pull-up resistor. 3 STEP - input. A low-to-high transition advances the motor one step. Board has built in pull-up resistor. 4 ENABLE - input, active-low. When logic-low all outputs are enabled. Board has build in pull-up resistor. RESET - input, active-low. When logic-low all outputs are off and translator is set to predefined home state. STEP input is ignored until RESET goes high. Board has build in pull-up resistor. This input may be left disconnected when not used. 5 6 GND - signal ground. Table 2: 6-pin Header J2 Pin # Pin Description 1 Vb – POSITIVE motor and logic supply voltage 7.5 to 30V

Features

2 GND – power supply GND
• +/- 750mA, 24V Output Rating
• Crossover-Current Circuit Protection 3 O1A - output. Motor Phase 1 output A.
• Under-Voltage Lockout Protection 4 O1B - output. Motor Phase 1 output B.
• Thermal Shutdown Protection 5 O2A - output. Motor Phase 2 output A.
• Automatic Current-Decay Mode
• Chip Enable Select Function 6 O2B - output. Motor Phase 2 output B.
• Built-in Translator
• Sleep Mode Table 3: Adjustments Ref ID
• Reduced audible motor noise
• Increased step accuracy Name Description
• Low Quiescent Current (10mA MAX)
• Extremely small footprint 1.25”x 1.25” (32mm x 32mm) BSD-01C Step Motor Driver Interinar Electronics Additional information at www.interinar.com R15 Vref Board has build-in potentiometer for adjusting the maximum current of the driver according to motor’s specification. It allows to adjust Vref in range from 1V to 5V. TP1 Vref Vref can be observed by connecting voltmeter between TP1 and GND. or send email to: support@interinar.com Rev.1.1 1 or send email to: support@interinar.com Rev.1.1 2