Product Short Description
Product Overview
The SM2337D is a fully integrated single-unit motion control device manufactured by MOOG Animatics under the SmartMotor™ Class 5 D-Series product line. It eliminates separate external servo drives, independent motion controllers, discrete encoder wiring harnesses, and auxiliary I/O modules by merging a brushless permanent magnet motor body, high-frequency servo power amplifier, embedded motion control CPU, high-resolution optical incremental encoder, multi-channel digital I/O, and multi-protocol industrial communication bus circuits into a single compact NEMA23 standard housing.
Description
Electrical Power Parameters
- Nominal Operating Bus Voltage: 48VDC DC input
- Rated Continuous Output Power: 130W (0.18HP)
- Continuous Rated Torque: 35 oz-in / 2.188 in-lb / 0.248 Nm
- Peak Transient Overload Torque: 58 oz-in / 3.625 in-lb / 0.411 Nm
- Maximum Continuous Operating Current: 4.52A RMS
- Peak Instantaneous Current: 9A RMS
- Winding Voltage Constant: 10.95 V/kRPM
- Motor Winding Inductance: 0.906 mH
- Number of Magnetic Poles: 8 poles brushless permanent magnet rotor
Speed & Encoder Position Feedback Parameters
- Rated Continuous Operating Speed: 6000 RPM
- Maximum No-Load Top Speed: 8630 RPM
- Built-In Optical Incremental Encoder Resolution: 2000 counts per single revolution
- Position Control Accuracy: ±0.1° mechanical angular positioning error
- Rotor Moment of Inertia: 0.0019 oz-in-sec² / 1.342×10⁻⁵ kg·m²
Mechanical Dimension & Load Bearing Parameters
- Standard Frame Size: NEMA 23 (57mm square front mounting flange)
- Output Solid Shaft Diameter: 0.250 inch / 6.35mm
- Maximum Allowable Radial Shaft Load: 7lb / 3.18kg
- Maximum Allowable Axial Thrust Shaft Load: 3lb / 1.36kg
- Total Overall Motor Length: 98mm
- Net Unit Weight: 1.6kg
- Standard Shaft Extension Length: 22mm
- Mounting Flange Thickness: 6mm
- Four M4 threaded mounting holes evenly spaced on front flange
Digital I/O Configuration Parameters
- Total Built-In Digital Channels: 7 independent 5V TTL non-isolated digital I/O points
- Configurable Channel Modes: Digital input for limit sensors, photoelectric detectors, trigger signals; digital output for solenoid valves, indicator lamps, small relay coils
- Input Signal Threshold: Low level below 0.8V, high level above 2.4V
- Maximum Single Channel Output Sourcing Current: 20mA
- Optional Expansion Hardware: External add-on module supporting 10 channels of 24VDC galvanically isolated digital I/O for high-noise industrial field environments
Communication Interface Parameters
- Primary Physical Interfaces: D-Sub 15 pin metal connector integrated on motor rear housing
- Supported Serial Communication Protocols: RS232 point-to-point serial link, RS485 multi-drop bus, Modbus RTU, CANopen DS402 motion profile protocol, DMX lighting control protocol, I²C peripheral interconnection bus
- Combitronic Distributed Motion Network Support: Direct peer-to-peer interconnection between multiple SM2337D units to execute synchronized multi-axis motion without external master hardware
- Maximum Node Quantity on Single RS485 Bus: 32 individual SmartMotor servo units
Environmental Operating Parameters
- Continuous Operating Ambient Temperature Range: 0°C to +50°C
- Long-Term Storage Temperature Range for Spare Units: -20°C to +70°C
- Allowed Relative Humidity Level: 5% to 90% non-condensing atmospheric moisture
- Standard Ingress Protection Rating: IP54 dust and splash water resistance for motor main housing
- Mechanical Vibration Compliance: IEC 60034 vibration grade N standard for rotating electrical machinery
- Shock Resistance Rating: Able to withstand 10g peak short-duration mechanical shock during transportation and equipment operation
Safety & Compliance Certification Parameters
- Low Voltage Equipment Safety Certification: UL60950-1, IEC60950-1 industrial control hardware safety standard
- Electromagnetic Compatibility Compliance: CE EN61000-6-2 industrial heavy EMC noise immunity standard, CE EN61000-6-3 light industrial electromagnetic emission standard
- Hazardous Substance Compliance: RoHS lead-free and restricted hazardous chemical environmental certification
- Functional Safety Built-In Hardware Protections: Over-current cut-off, over-voltage shutdown, under-voltage lockout, internal over-temperature protection, rotor stall locked rotor fault interlock, output short-circuit permanent latch protection
Core Functional Features
All-In-One Integrated Hardware Architecture Eliminating Discrete Drive Hardware
Every critical motion control component required for closed-loop servo operation is fully integrated within the single NEMA23 motor housing structure. This consolidated design removes the need for separate rack-mounted servo drive chassis, independent motion control PLC hardware, dedicated encoder signal wiring looms and auxiliary terminal wiring blocks. The reduction in discrete external hardware drastically cuts the total quantity of wiring connections within equipment control cabinets, minimizes overall machinery footprint and lowers total system component procurement and maintenance costs for automated machine builders.
Independent Standalone Motion Programming Execution Without External Master Controllers
A dedicated high-speed motion processing CPU is embedded within the motor internal circuit assembly, with full native support for the proprietary SMI motion programming language. Machine builders can pre-program complete complex motion sequence logic directly into the non-volatile flash memory storage integrated on the motor printed circuit board. Supported standalone motion workflows include single-axis point-to-point positioning, continuous reciprocating back-and-forth motion, electronic cam contour following, electronic gearing synchronized axis tracking, variable speed profile generation and conditional logic triggered by digital input sensor signals. All pre-stored motion programs execute autonomously upon equipment power-up without requiring continuous real-time command signal transmission from external PLC or industrial computer master control hardware.
Single Composite Cable Unified Power and Communication Transmission Design
A single multi-core composite cable connects the SM2337D motor to the equipment power distribution terminal block and control bus network simultaneously. This single cable design consolidates 48VDC DC power supply conductors, RS485 communication data lines, digital I/O signal wiring and encoder feedback signal traces within one unified cable sheath. The consolidation of all power, signal and communication wiring into one cable drastically reduces wiring complexity during machine assembly, eliminates messy multiple separate cable routing within equipment enclosures and reduces the risk of wiring misconnection during production line equipment build and field maintenance service work.
Combitronic Peer-To-Peer Distributed Multi-Axis Synchronization Technology
The SM2337D unit natively supports MOOG proprietary Combitronic distributed motion network technology. Multiple SM2337D servo motors can be interconnected directly via dedicated Combitronic communication wiring without any intermediate master control PLC hardware or external motion coordinator equipment. Each individual motor’s embedded motion CPU executes independent parallel motion calculation logic simultaneously, enabling ultra-high precision synchronized multi-axis coordinated motion workflows including electronic gearing, cam profile synchronous tracking and coordinated contour cutting movement. The peer-to-peer distributed processing architecture eliminates single point processing bottlenecks common to traditional centralized motion control systems relying on a single master controller unit.
Multi-Channel Configurable Digital Input and Output Interlock Logic Processing
Seven independent 5V TTL non-isolated digital I/O channels are built directly onto the motor internal control circuit board assembly. Each individual channel can be freely reconfigured via SMI programming logic to operate either as a digital input signal receiver or a digital output signal driver. Digital input channels accept sensor trigger signals originating from equipment travel limit switches, photoelectric presence detectors, proximity position sensors and machine cycle start/stop trigger switches. Digital output channels supply low-current drive signals to actuate small solenoid valves, equipment status indicator lamps, miniature signal relay coils and audible cycle completion alarm buzzers. Independent interlock conditional logic can be programmed directly within the motor’s embedded CPU to execute automatic motion stop, speed reduction or fault alert output actions in direct response to digital input sensor state changes, removing the requirement for external PLC interlock logic processing for basic machine safety and cycle control workflows.
Multi-Stage Built-In Hardware Fault Detection and Automatic Protection Circuitry
Comprehensive multi-layer hardware monitoring and automatic fault protection circuits are integrated across all internal motor printed circuit board assemblies, providing full coverage against all common electrical and mechanical operating fault conditions. Continuous real-time monitoring circuits track DC input supply voltage magnitude, motor winding operating current levels, internal power conversion component surface temperatures and rotor rotational stall state. If any monitored operating parameter exceeds factory calibrated safe operating threshold limits, dedicated hardware protection logic immediately triggers automatic safety shutdown actions to prevent permanent irreversible damage to internal motor electrical components. Implemented protection mechanisms include over-current instantaneous output cut-off, over-voltage permanent latch shutdown, under-voltage motion operation lockout, internal over-temperature complete power disable, rotor stall locked rotor fault interlock and output wiring short-circuit permanent fault latch state. Upon fault detection, the motor stores a permanent timestamped fault code record within internal non-volatile memory storage for later maintenance troubleshooting and fault root cause analysis.
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