PMB33F-00116-02
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The PMB33F-00116-02 by Pacific Scientific is part of the PMB Brushless Servomotors series and features NEMA Size 34 mounting options. It delivers a maximum torque of 13.3 Nm, operates with a rated speed of 6,000 RPM, and uses an IP40 protection class. The motor offers feedback options of resolver or encoder.
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Product Description:
The PMB33F-00116-02 is a self-cooling, 240 VAC operating servo motor from Pacific Scientific. It is equipped with a digital feedback encoder that provides 4096 pulses/revolution with commutation tracks for reliable speed and motion control. This motor includes a PTC-thermistor for thermal monitoring to prevent overheating.
The PMB33F-00116-02 motor comes in a 34 NEMA housing and it possess 8 magnetic pole pair for mutual induction that gives steady torque at all times. It provides 5.42 Nm of continuous stall torque and its maximum torque reaches up to 16.10 Nm. The motor uses a modified winding design that supports a continuous current of 9.0 A and 17.10 A of peak current. It produces 0.60 Nm of torque against the usage of every 1 A current and its back EMF value is at 0.37 V/rad/sec. This PMB motor operates efficiently at a rated speed of 4600 rev/min and it comes with a flat shaft configuration that is 11.9 mm thick and 25.4 mm long. It features IP40 environmental protection and its thermal impedance is 0.780 °C/Watt. The motor’s winding has an inductive value of 2.80 mH and it possess a rotor inertia of 0.000404 kg·m² for rapid responsiveness in dynamic conditions. It is provided with AMP plugs on 18 inches long leads that are 18 AWG and 26 AWG in sizes for power and feedback, respectively.
The PMB33F-00116-02 motor has a thermal time constant specified at 32 minutes and it supports a 10” x 10” x 1/4” aluminum heatsink to maintain thermal stability during long duty cycles. It is presented with dual shielded bearings to ensure consistent performance under continuous and intermittent loads. This PMB motor possess a low resistance value of 0.960 Ohms between phases and it carries a mass of 13.80 lbs.
Frequently Asked Questions about PMB33F-00116-02:
Q: Why does the PMB33F-00116-02 use a digital feedback encoder with commutation tracks?
A: The commutation tracks help precisely determine rotor position for seamless commutation. This enhances the motor's efficiency in closed-loop motion control systems.
Q: How does the 0.000404 kg·m² rotor inertia affect performance?
A: Lower rotor inertia allows faster acceleration and deceleration. This is critical for applications needing rapid dynamic response.
Q: How does the thermal impedance of 0.78 °C/Watt benefit the motor’s operation?
A: It indicates efficient heat dissipation. This reduces the risk of overheating during sustained high-torque operation.
Q: Why is a PTC-thermistor integrated into the PMB33F-00116-02?
A: It monitors internal temperature changes and triggers safety responses. This helps prevent thermal damage during overload conditions.
Q: What does the 2.8 mH inductance value imply for the PMB33F-00116-02 motor?
A: This level of inductance ensures smoother current flow and reduces electrical noise. It supports more stable operation at varying loads.
