I. Basic Identity Information
Full Model Number: 6445-001-K-N
Brand: Pacific Scientific (formerly part of Kollmorgen)
Product Series: 6445 Micro-step Subdivision Drive Controller (Indexer + Stepper Drive Integrated Stepper Controller)
Product Positioning: Dedicated drive for two-phase hybrid stepper motors + motion command controller integrated module, with built-in motion interpolation and point logic, no need for additional independent motion controller; mainly used in precision positioning automation equipment
Model Suffix Interpretation: 001-K-N
001: Basic standard hardware version, without wide temperature / three-proof customization
K: Standard RS232 + RS485 dual serial port communication, supports Stepper BASIC programming
N: Standard panel, without handheld operation unit, no DeviceNet bus expansion
Core Electrical Power Specifications
1. AC Input Power Supply
Input Voltage: Single-phase 120/240VAC 50/60Hz, switchable gears by switch SW1 on the body
Overall Rated Power: 300W
Full-load Input Current: 240VAC ≈ 3.7A; 120VAC ≈ 4.7A
2. Motor Drive Output (Two-phase Bipolar Chopping)
Output Current: 0.625~5.0A RMS, 0.625A adjustable by stepping code
Peak Current: 7.1A in micro-step mode, 5A in full-step mode
Chopping Frequency: 20kHz PWM constant current chopping
Compatible Motors: 4-wire / 8-wire two-phase hybrid stepper motors
Idle Current Reduction: During standby 0.1s without pulse automatically reduces 50% winding current to reduce motor heat
3. Auxiliary DC Output
External Axis Expansion Power Supply: 66VDC / 4.6A Max, shared power of the entire machine (built-in drive + external expansion)
Core Motion Control Capabilities
Subdivision Precision: 200~51200 steps / revolution, supports full-step, half-step, 1/4, 1/8 to 256 subdivision micro-steps
Built-in Motion Functions: Positioning, electronic gearing, zero search, limit protection, speed ramp acceleration and deceleration
Encoder Closed-loop Support: Compatible with orthogonal differential encoders, for position verification, out-of-sync stall detection, and closed-loop correction
Patented Digital Damping (Digital Electronic Damping): Eliminates stepper low-frequency resonance, maintains rated torque at all speeds
Program Storage: 12KB battery-backed RAM, stores multiple motion profiles, parameters, and BASIC programs
Programming Language: Exclusive Stepper BASIC, supports multi-segment motion logic, conditional judgment, loops, IO linkage
I/O and Communication Interfaces
1. Programmable Switching Input
16 Digital Inputs: 5~30VDC open collector signals, connected to origin, positive and negative hard limit, external start/stop, trigger signal
12 Digital Outputs: NPN open collector, single path maximum current 100mA, alarm, stop, operation status output
Special Fault Output: Independent NPN fault alarm contact
2. Communication Ports
RS232 + RS485 dual serial ports, baud rate 9600~38400 adjustable
Supports single machine debugging, multi-axis networking bus, upper computer issuing BASIC instructions / position programs
3. Key Connectors
J1: AC power input terminal
J2: Stepper motor power connection
J3: Encoder feedback interface
J4: 16 input 12 output universal IO terminal J5: RS232 Debug Serial Port
J6: 66VDC External Expansion Axis Power Output
Environmental and Mechanical Parameters
Operating Temperature: 0℃ ~ +50℃
Storage Temperature: -40℃ ~ +70℃
Heat Dissipation: Built-in axial flow cooling fan, installed vertically in the control cabinet
Protection Grade: IP20, only for indoor electrical control cabinets
Overall Weight: Approximately 2.72kg (6lbs)
Installation: Standard industrial chassis flange wall-mounted installation
Complete Hardware Protection Mechanism
Hardware Overcurrent, Short Circuit, Bus Overvoltage / Undervoltage Protection
Motor Winding Overheating, Drive Power Tube Overtemperature Shutdown
Positive and Negative Hard Limiting Software Locking, Soft Limit Interval Limiting
Encoder Break Wire, Out-of-Sync Fault Detection and Alarm
Communication Disconnection Watchdog Shutdown Protection
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