PMB33E-10101-02
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The PMB33E-10101-02 is a compact control module weighing 200 grams and featuring a DIN rail mounting system. Manufactured by Pacific Scientific as part of the PMB Brushless Servomotors series, it operates on 24V DC and supports Modbus RTU communication. It includes overvoltage and reverse polarity safeguards.
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Product Description:
The PMB33E-10101-02 Brushless Servo Motor is Pacific Scientific's product, and draws a maximum current of 17.5 Arms to provide maximum torque during sudden transitions. This servo motor offers a peak torque of 16.1 Nm for high dynamic loads and rapid acceleration cycles in industrial automation and motion systems.
At normal operation conditions with a 240V AC or 320V DC bus, this motor maintains a rated torque of 4.41 Nm to provide continuous torque output with constant performance under load. This motor’s nominal stall current is 7.4 Arms, which ensures torque remains at zero speed without overloading or affecting stability. The static friction torque of the PMB33E-10101-02 is maximally limited to 0.169 Nm to accommodate low-resistance motion at startup and for smooth control at low speeds. The thermal efficiency of this brushless motor is assisted by a thermal resistance of 0.78 °C/W so that the heat developed during use can be dissipated well. This motor’s increased reliability is provided by its Class F winding insulation that is able to withstand up to 155°C winding temperatures, thus raising its durability in case of thermally stressful usage.
The voltage constant of the PMB33E-10101-02 motor is 0.56 Vrms/rad/sec, which is responsible for voltage-speed conversion to provide accurate speed control. This motor has a line-to-line inductance of 6.8 mH for lower current ripple and better current regulation, thus resulting in smoother torque output and effective servo loop operation. This motor is 210.3 mm in length and 6.3 kg in weight to provide a balance between power and space, which makes it suitable for use in limited space assemblies. The electrical connections of this motor are managed using flying leads with AMP connectors for easy, secure, and quick integration. The rotor of this motor comes equipped with Neodymium Iron Boron magnets to provide high magnetic flux density and increased torque density.
Frequently Asked Questions about PMB33E-10101-02:
Q: Why is the 6.8 mH inductance important in servo operation?
A: Higher inductance smooths current transitions and reduces noise in control loops, which helps stabilize torque delivery during high-speed changes.
Q: What is the benefit of Class F insulation in PMB33E-10101-02?
A: Class F insulation handles higher winding temperatures, protecting motor windings and extending life under thermally demanding operations.
Q: How do Neodymium Iron Boron magnets improve performance?
A: They produce stronger magnetic fields in compact spaces, resulting in higher torque density and improved dynamic response.
Q: Why does the PMB33E-10101-02 use flying leads with AMP connectors?
A: Flying leads with AMP connectors simplify installation and provide secure, vibration-resistant connections in motion control environments.
Q: How does the 0.56 V_RMS/rad/sec voltage constant affect control accuracy?
A: It allows precise voltage-to-speed translation, improving feedback accuracy in servo loop control and speed regulation.
