PMB31B-00216-03
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The PMB31B-00216-03 is a NEMA Size 34 servomotor with a maximum speed of 8,000 rpm and 5.5 x 10^-6 kg·m² rotor inertia. Manufactured by Pacific Scientific as part of the PMB Brushless Servomotors series, it operates with 3 phases and features flying leads with MS connectors. The motor includes a digital encoder with 4096 ppr resolution.
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Product Description:
The PMB31B-00216-03 represents Pacific Scientific's top-rated PMB Brushless Servomotors series, which confirms OEM lineage. It uses flying leads as connector type with MS connectors which provide robust, standardized connections to simplify harness mating and field replacement. With NEMA motor size 34, the motor offers a standard flange and mounting pattern that eases integration into existing NEMA-compatible frames. The encoder resolution is 4096 ppr that yields high position granularity to support fine step motion and tight position control.
Employing sensor type as digital encoder with commutation enables direct commutation feedback and accurate closed-loop commutation. Stack length multiple as “1” defines the standard stack configuration for further simplifying ordering and mechanical layout. Nominal stall current at 240 VAC max is 2.7 ARMS which sets a clear current limit I order to guide drive selection and supply capacity planning. The device’s winding current of 2.7 A indicates the rated phase current to establish thermal loading expectations. This three-phase motor defines the electrical topology. Moreover, the rotor inertia is 5.5 x 10^-6 kg·m², specifying the rotor mass moment and informs drive tuning and acceleration profiling.
Encoder input voltage of PMB31B-00216-03 module is 5 V DC ±15% which sets the acceptable supply tolerance and also protects encoder electronics and ensures reliable signal levels. Alos, its encoder input current is 100 mA at max and limits available feedback supply demand. Further, its encoder output circuit is Line Driver, AM26LS31 RS422A, which provides differential outputs to improve noise immunity over long cable runs. Giving an encoder frequency response at 200 kHz signifies the maximum update bandwidth, supporting fast paced commutation and quick control loops.
Frequently Asked Questions about PMB31B-00216-03:
Q: What motor size is associated with PMB31B-00216-03 and how does that influence mounting choices?
A: This NEMA Size 34 motor establishes a common flange and bolt pattern that streamlines mechanical integration into standard NEMA-compatible mounts.
Q: What encoder resolution does PMB31B-00216-03 provide and what control benefit does that yield?
A: It provides a 4096 ppr encoder which increases positional granularity and supports finer motion increments.
Q: What sensor type is fitted to PMB31B-00216-03 and how does it support commutation?
A: PMB31B-00216-03 uses a digital encoder with commutation which supplies both commutation signals and position feedback that enables drives to execute accurate electronic commutation.
Q: What does the stack length multiple of PMB31B-00216-03 indicate?
A: A stack length multiple of 1 for drive PMB31B-00216-03 signifies the standard stator length configuration that affects torque output and overall motor length.
Q: What is the nominal stall current rating for PMB31B-00216-03 and how does that inform drive selection?
A: The nominal stall current at 240 V AC maximum of 2.7 ARMS sets the maximum steady phase current expected at stall which guides selection of drive current limits.
