Motor Drive & Power Electronics Solution — Honeywell CSNL281-006 | CSNL Series
Where This Product Is Used
The Honeywell CSNL281-006 closed loop bidirectional current sensor is engineered for high-current measurement in demanding industrial environments. Typical deployment scenarios include:
- AC/DC Motor Drives — Precise phase-current feedback for vector control and torque regulation in variable-frequency drives (VFDs).
- Industrial Inverters & UPS Systems — Real-time bidirectional current monitoring for grid-tie inverters, solar inverters, and uninterruptible power supplies.
- Welding Equipment — High-current sensing in MIG/TIG welding power sources requiring fast transient response.
- Servo Amplifiers & CNC Machines — Closed-loop current control for servo axes demanding sub-millisecond feedback latency.
- Battery Management Systems (BMS) — Charge/discharge current monitoring in industrial energy storage and EV charging infrastructure.
- Power Conversion & Rectifiers — Current measurement in thyristor rectifiers, IGBT converters, and active front-end drives.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | CSNL281-006 |
| Manufacturer | Honeywell |
| Series | CSNL |
| Sensing Technology | Closed Loop Hall Effect (Flux Gate) |
| Measurement Type | Bidirectional (AC & DC) |
| Nominal Primary Current (IPN) | 750 A |
| Supply Voltage | 24 V DC (±15 V or ±24 V variants available in series) |
| Burden Resistor (RM) | 25 Ω |
| Output Type | Analog current output (secondary current) |
| Accuracy | ±0.5% typical |
| Response Time | <1 µs (typical) |
| Operating Temperature | -25°C to +85°C |
| Isolation Voltage | 3 kV RMS (galvanic isolation) |
| Mounting | PCB / Panel mount (busbar aperture) |
| Weight | 4,460 g (module assembly) |
| Compliance | RoHS, CE |
Why Engineers Specify This Model
- Closed-loop topology eliminates offset drift and delivers superior linearity versus open-loop Hall sensors — critical for precision torque control.
- Bidirectional measurement supports regenerative drives and four-quadrant operation without additional signal conditioning.
- 750 A nominal range covers heavy industrial loads including large servo axes, crane drives, and high-power rectifiers.
- Sub-microsecond response enables fast overcurrent protection and tight current-loop bandwidth in high-performance drives.
- Galvanic isolation (3 kV RMS) protects control electronics from high-voltage power bus transients.
- 24 V single-supply operation simplifies integration into modern PLC and drive control cabinets.
Complete System Bill of Materials
For a complete motor drive or inverter current-sensing assembly using the CSNL281-006, engineers typically specify:
- Honeywell CSNL281-006 — Primary current sensor (this unit)
- 25 Ω precision burden resistor (RM, ±0.1%, 5 W rated)
- 24 VDC regulated SMPS (e.g., Phoenix Contact QUINT series)
- Differential amplifier / ADC input stage (for PLC or DSP interface)
- Busbar or cable primary conductor (sized for 750 A continuous)
- DIN rail enclosure with EMC shielding for control wiring
Compliance & Industry Standards
- RoHS 2011/65/EU — Restriction of Hazardous Substances compliant
- CE Marking — Meets applicable EU directives for industrial electrical equipment
- IEC 61010 — Safety requirements for electrical equipment for measurement and control
- UL Recognition — Recognized component per applicable UL standards (verify current listing with Honeywell)
Quality Assurance & Sourcing
Konmask.com sources the CSNL281-006 exclusively through verified industrial distribution channels. Every unit undergoes:
- Visual inspection and label verification against Honeywell factory markings
- Packaging integrity check (original anti-static packaging preferred)
- Cross-reference against Honeywell authorized distributor documentation
- Traceability records maintained for B2B procurement compliance
We do not supply counterfeit, refurbished, or remarked components. Certificate of Conformance (CoC) available upon request for qualified buyers.
How to Source This Part
- Add to cart and complete checkout — secure payment via T/T bank transfer, PayPal, or credit card.
- For bulk orders (>5 units) or OEM procurement, contact support@konmask.com for a formal quotation.
- Lead time: typically 3–7 business days for in-stock units; 2–4 weeks for factory-order quantities.
- Export documentation (commercial invoice, packing list, CO) provided for international shipments.
Application-Specific FAQ
Q: Can the CSNL281-006 measure DC current as well as AC?
A: Yes. The closed-loop Hall effect topology measures both AC and DC currents bidirectionally, making it suitable for DC bus monitoring and AC phase current sensing.
Q: What burden resistor value should I use?
A: This variant is specified with a 25 Ω burden resistor (RM). Use a precision ±0.1% resistor rated for the secondary current to maintain accuracy.
Q: Is the CSNL281-006 compatible with 3.3 V or 5 V ADC inputs?
A: The sensor outputs a secondary current signal. A signal conditioning stage (op-amp or instrumentation amplifier) is required to convert to a voltage compatible with low-voltage ADC inputs.
Q: What is the maximum overload current?
A: Honeywell specifies overload capability at typically 150% of IPN (≈1,125 A peak) for short durations. Consult the official datasheet for derating curves.
Q: Can I get a datasheet or CoC before ordering?
A: Yes — email support@konmask.com with your inquiry and we will provide documentation promptly.
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