The NI cFP-PWM-520 is an 8-channel Pulse-Width Modulation output module for National Instruments Compact FieldPoint systems. It provides independent programmable control of DC-powered devices through variable duty cycle PWM signals, delivering up to 1 A per channel at 5 VDC or 10–30 VDC. Each channel operates with 12-bit duty cycle resolution (4,096 settings from 0–100%) and independently configurable output periods ranging from 1 ms to 65,535 ms, supporting frequencies up to 1 kHz.
Technical Specifications
• Channels: 8 PWM sourcing outputs with short-circuit protection
• Output Voltage: 5 VDC or 10–30 VDC
• Current per Channel: Up to 1 A (maximum 2 A per terminal)
• Duty Cycle: 0–100% with 12-bit resolution (4,096 settings)
• Output Period: 1 ms to 65,535 ms in 1 ms increments
• Output Frequency: Up to 1 kHz
• Isolation: Optical bank isolation rated 2,300 VRMS breakdown; 250 VRMS CAT II continuous channel-to-ground isolation
• Power Consumption: 1 W
• Operating Temperature: −40 to 70 °C
• Storage Temperature: −55 to 85 °C
• Dimensions: 5.00 × 2.60 × 0.94 inches
• Weight: 3.9 oz
– Key Features
• Short-circuit protection disables affected output channels upon fault detection
• Minimal leakage current in OFF state
• Status indicators: green POWER, READY, and eight per-channel output state LEDs
• Hot-swappable module design
• Each channel provides dedicated VOUT, VSUP, and COM terminals
– Typical Applications
DC servo motor speed control, lighting intensity adjustment, and industrial heater output regulation.
– Compatibility & Integration
Mounts directly on cFP-BP-x or cFP-180x Compact FieldPoint backplanes and FP-TB-x terminal bases. Connects via cFP-CB-x connector blocks. Requires external 5 VDC or 10–30 VDC power supply sized for connected load current.
