2 Phase 4 Wire Stepper Driver 2 in 1 Bipolar Stepper Motor Drivers Photoelectric Isolation Item Type: 2 Phase 4 Wire Stepper Driver Model: SMD-2A24-M32D-AV10 Material: ABS Specification: 2 Phase 4 Wire Bipolar Type Speed Response Rate: 100KHz Operating Temperature: 0-50℃ Operating Humidity: 40-90%RH Minimum Standby Current: 0.03A Maximum Work Allowable Current: 15A (Motor and Brake 10A + Solenoid Valve 5A) Allow Start up Peaks Surge Current: 35A 0.2 Seconds Allowable Input Power Ripple: Less than or equal to 500MV The transmitting frequency of the light belt is 433MHz, the antenna is 340mm. The transmitting power is 10MW. The open distance is 100 meters. The remote control antenna of 250mm, receiving sensitivity of -110DB, and open distance of 100 meters. Solenoid Valve Interface Specifications: Adapt to various standard solenoid valves with 24V and operating current within 5A. Motor and Brake Interface Specifications: Adapt to 24V electromagnetic brakes and motors, and the total working current does not exceed 10A. How e: 1. Wiring method: GND: DC power supply ground wire +V: DC power supply positive pole, range +9V‑+36V, recommended value +24VDC A+, A‑: A phase coil of the motor B+, B‑: B‑phase coil of the motor 2. Control signal interface function: PUL+(+5V)/PUL‑(PUL): Pulse control signal: the rising edge of the pulse is valid, PUL is 4~5V at high level, and 0~0.5V at low level. In order to reliably respond to pulse signals, the pulse width should be greater than 1.2μs. If +12V or +24V is used, a series resistor is required. DIR+(+5V)/DIR‑(DIR): Direction signal: high low level signal. To ensure reliable commutation of the motor, the direction signal should be established at least 5μs before the pulse signal. The initial running direction of the motor is related to the wiring of the motor. Interchange any phase winding (such as A+, A‑ exchange) can change the initial running direction of the motor, 4~5V when DIR‑ is high level, and 0~0.5V when low level. ENA+(+5V) ENA‑(ENA): Enable signal: This input signal is used to enable or disable. When ENA+ is connected to +5V and ENA‑ is connected to low level (or the internal optocoupler is turned on), the driver will cut off the current of each phase of the motor to make the motor in a free state, and the step pulse will not be responded at this time. When this function is not needed, the enable signal terminal can be left floating.