The Parker Hannifin SPD is a digital frequency converter for brushless motors, designed to offer a flexible and cost-effective solution for motion control applications. It integrates a range of auxiliary functions to minimize the need for additional control electronics.
Function Description
The SPD operates as a "MOTION ENGINE," allowing it to execute desired motion profiles commanded by a PLC or machine PC, thereby simplifying axis control. It supports various operating modes, including:
- Speed Controller: Manages motor speed to follow a reference value, with adjustable acceleration and deceleration ramps.
- Torque Motor Control: Controls motor torque with speed control overlaying, using the main analogue reference as the torque reference.
- Positioning with Trapezoidal Speed Profiles: Enables precise positioning with user-defined acceleration, deceleration, and full speed parameters.
- Electrical Shaft + Positioner: Combines electrical shaft functionality with a dynamic positioner and flow speed functions. It allows programming the ratio between master and slave, and defines trapezoidal profiles for positioning.
- Electronic Cam: Specifically designed for packaging machines, it uses a vector of 257 elements to define the position the controlled axis must assume relative to the master axis.
- Position Control through CanBus: Executes a proportional position loop with feed-forward, receiving position and speed references via CANBUS using the SBCCAN protocol.
- Stepper Motor Simulation: Can simulate a stepper motor, providing phase A and B output signals.
- Internal PLC (pico-PLC): A programmable logic controller that connects external inputs/outputs with the drive's parameters, allowing for logical and mathematical operations, and custom function development.
Important Technical Specifications
The SPD series includes models SPD2, SPD5, SPD8, SPD16, and SPD24, with varying rated output currents and shaft powers:
- Power Supply: 380-480 V~ ± 10%
- Control Voltage: 24 V= - 2 A
- Rated Output Current: 2A (SPD2), 5A (SPD5), 8A (SPD8), 16A (SPD16), 25A (SPD24)
- Peak Output Current (4s): 4A (SPD2), 10A (SPD5), 16A (SPD8), 32A (SPD16), 50A (SPD24)
- Shaft Power: 1 kW (SPD2), 2.6 kW (SPD5), 4.2 kW (SPD8), 7.5 kW (SPD16), 12.8 kW (SPD24)
- Ambient Temperature: 0÷45 °C
- Storage Temperature: -20÷+65 °C
- Relative Humidity: <85% without condensate
- Internal Braking Resistor Dissipation: 120 W
- Feedback: Resolver/Encoder
- Power Stage Switching Frequency: 8 KHz
- Maximum Output Fundamental Frequency: 450 Hz
- Degree of Protection: IP 20
- Digital Inputs: 4 (Impedance 7K, VH=24Vnom. (15-30), VL=0÷3V)
- Digital Outputs: 2 (PNP open collector, 24V=/100mA single output, 500mA total current)
- Encoder Simulation RS-422: 4÷2500 step/rev
- Frequency/Sign or Encoder Input: 800/200 KHz
- Analogue Reference: ±10 differential V (Input impedance >20K ohm, Resolution 15 bits)
- Auxiliary Analogue Input: 5V; 700mA (Input impedance >20K ohm)
- Auxiliary Analogue Output: ±10 differential V
- Serial Line: RS-422 / RS-485 (±4.5 V, 1.5 mA)
- Field Bus: CanBus ISO/DIS11898
Usage Features
- Operator Interface: Features a keypad-display module with three keys ([M], [+], [-]) for easy configuration, status control, and command sending. Parameters can be viewed and modified directly from the display.
- Parameter Management: Parameters are organized into decimal (Pr) and binary (Pb) types, with a reduced menu for basic applications and an extended menu for advanced functions and pico-PLC instructions.
- Serial Communication: Supports RS-422/RS-485 serial communication for connection to a PC, allowing configuration via MotionWiz software.
- CANBus Interface: Includes a CANBus interface (ISO/DIS11898) with SBCCAN and CANopen protocols, enabling real-time control and parameter exchange with other devices.
- Feedback Options: Can use resolver, incremental encoder, or SinCos/Endat encoder for feedback, depending on the drive's hardware configuration.
- Homing Function: Provides typical axis reset procedures for operating modes 13, 14, and 15, with two reset types.
- Programmable Outputs: Allows digital outputs to be programmed based on motor shaft position or other digital functions.
Maintenance Features
- Diagnostics and Alarms: The drive includes a diagnostics program to facilitate troubleshooting. Alarm codes (Pr23, Pr24) are displayed on the keypad, and the last detected alarm is stored. Alarms are generally non-returning and require manual reset after the fault is resolved.
- Parameter Saving/Restoring: Parameters can be saved permanently to EEPROM (Pb99.15) and restored to default values (Pb99.12) if operating conditions become unsatisfactory.
- Software Updates: The software version code (Pr25) indicates the installed software version.
- Installation and Safety Instructions: Emphasizes vertical mounting with adequate clearance, proper sizing for the motor, separate routing of power and control cables, correct grounding, and protection fuses. It warns against accessing the converter when powered on and advises waiting fifteen minutes after power-off for condensers to discharge.
- External Braking Resistance: Supports external braking resistance for higher braking power needs, with specific resistance values for different SPD models.
- Training Courses: Parker Hannifin S.p.A. – Divisione S.B.C. organizes training courses for qualified personnel on installation, maintenance, and commissioning.
The SPD conforms to EN50082-1*/EN61000-6-2 (Basic immunity specifications), EN50081-1*/EN61000-6-4 (Basic specifications for radio interference), and CEI-EN61800-3 (Product standard: Variable speed electric drives). Proper installation, including grounding, filtering, and screening, is crucial for conformity.
Safety:
The device is designed for installation and maintenance by qualified and trained personnel with a basic knowledge of electronics and converter technology. Unauthorized repair or tampering invalidates the warranty. The drive is considered a component, not a machine, and the user is responsible for workplace safety regulations.
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