ISM 7402

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National Instruments ISM-7402 Integrated Stepper

The National Instruments ISM-7402 is a versatile integrated stepper that is made for use with the NI-7330, NI-7340, and NI-7350 motion controllers. The amplifier of the ISM-7402 is driven by a digital MOSFET that boasts 16 kHz PWM (Pulse Width Modulation) control. Its supply voltage can range from 12 VDC to 60 VDC, making it adaptable to various setups and power configurations. With optically isolated 5 V to 24 V logic support, the NI ISM-7402 allows for seamless integration into diverse control systems. Whether you need sourcing, sinking, or differential signals, this amplifier can accommodate the requirements of your application.

For optimal performance, the NI ISM-7401 requires a 12 VDC to 60 VDC power supply- the PS-12 or PS-13 from National Instruments are recommended. A reliable step signal source (either a PLC or motion controller) is also a necessary component for operating the ISM-7402. Additionally, a wire insertion tool designed for the connector can help facilitate quick and easy connections.

The NI ISM-7402 excels in providing consistent performance with its low input current requirements. At 4 V, the input current is typically 5 mA, and while at 30 V, it is typically 15 mA. The amplifier offers selectable pulse frequency settings between 150 kHz or 2 MHz to match your application's specific demands. The NI ISM-7402 allows for a minimum pulse width of 3 μs at the 150 kHz setting or 0.25 μs at the 2 MHz setting. 

The NI ISM-7402 is compact and sturdy by design, measuring 2.22 in. × 3.35 in. × 4.21 in. when excluding the pilot or shaft. The shaft is 0.25 in. and ensures a secure connection with your motor systems. The ISM-7402 weighs 42 oz and has a rotor inertia of 6.52 × 10-3 oz-in.-sec2. The reliable operation of the stepper is evident with it’s operating temperature range of 0 °C to 40 °C.