1797-PS2N2 Allen‑Bradley DC power supply

• Brand
  Allen‑Bradley
• Model
  1797-PS2N2
• Product Name
  FLEX Ex Intrinsically Safe Power Supply
• Place of Origin
  Rockwell Automation
• HS Code
  85371090
• Dimensions
  140 mm × 78 mm × 174 mm
• Weight
  1.15 kg
• Operating Temperature
  -20 °C to +70 °C
• Storage Temperature
  -40 °C to +85 °C
• Power Supply
  19–32 V DC
• Warranty
  12 month
• Product Status
  New and original

Backed by abundant in-stock inventory and nearly 20 years of industry experience, our company stands as a leading player in the industrial control sector.We offer an extensive range of industrial control products covering numerous models. Should you have any other requirements, please feel free to contact us, and we will respond to you promptly.

Our main brand:

1.ABB's module cards, touch screens, controllers, etc., such as PP846 touch screen, IGCT starting with 5SHY, PM starting controller, AI, DO starting input/output module, SP starting Bailey module, etc

2.GE's module card CPUs, such as VMIC starter, IS200, IS215, IS400, IS420 series, etc,

3.Emerson's card components and EPRO probes, Westinghouse 1C series, Honeywell CC series, Schneider 140 series, Envision full series, Bentley 3500 series, Rexroth motors and drives, and Foxboro small modules.

Input Characteristics

The 1797-PS2N2 power module adopts a stable DC power input design with a wide operating voltage range of 19 VDC to 32 VDC, which is standardized for 24 VDC industrial power supply systems, perfectly matching conventional field industrial power distribution standards. The module supports a maximum input current of 3.1 A and a peak maximum input power of 55 W, providing sufficient power margin for stable long-term operation of internal circuits and external field devices. It allows an AC ripple voltage ratio of no more than 5%, which can effectively resist power waveform interference and voltage fluctuation generated by industrial field equipment operation. In addition, the module is equipped with dual independent input terminal interfaces, which fully supports redundant power supply wiring schemes. This redundant design effectively avoids system power failure risks caused by single power supply circuit failure, greatly improving the overall power supply reliability and system operational stability of field control equipment.

Intrinsically Safe Output Characteristics

This power supply module is configured with 4 completely independent and galvanically isolated intrinsically safe (IS) output channels, achieving electrical isolation between channels and between internal and external circuits to eliminate cross-interference between field loops. Each single output channel provides a stable rated output power of 8.5 W, with a comprehensive total output power of 34 W, which can stably supply power for various low-power intrinsically safe field instruments and detection equipment. In terms of safety parameters, the open-circuit output voltage (Uo) is controlled below 9.5 VDC, and the short-circuit output current (Io) is limited to less than 1 A. Strict energy limitation parameters are adopted for IIC hazardous area applications, with maximum external capacitance Co less than 500 nF and maximum external inductance Lo less than 8 μH, which fully meets the intrinsically safe explosion-proof standards for dangerous industrial environments.

Each output channel supports a maximum bidirectional cable loop resistance of less than 0.1 Ω, adapting to on-site wiring requirements of different distances and ensuring no obvious voltage drop or signal distortion during power transmission. Most importantly, every output channel is equipped with an independent intrinsically safe energy limiting protection mechanism, which can automatically limit energy output in case of circuit overload, short circuit or abnormal faults. It effectively prevents spark generation and high-temperature hazards, ensuring safe and reliable operation of equipment in flammable and explosive industrial hazardous areas.

Isolated Intrinsically Safe Power Output

The 1797-PS2N2 delivers four fully galvanically isolated, energy-regulated intrinsically safe (IS) output channels dedicated to powering field instruments in hazardous locations. Each channel features independent voltage, current and energy limiting functions that strictly meet IIC-level explosion-proof criteria. By suppressing excessive electrical energy, the module eliminates ignition hazards and ensures safe power supply operation within flammable and explosive industrial environments.

Redundant Wide-Range DC Power Input

Designed with dual DC input terminals, the module supports redundant power configuration to avoid single-point power failure. It accommodates a wide industrial DC input range of 19–32 VDC and provides strong tolerance to field voltage fluctuations and AC ripples. The redundant input architecture greatly improves power supply continuity, enhances system stability, and guarantees uninterrupted operation of field control systems.

Independent Per-Channel Loop Protection

Every output channel is equipped with independent overload, short-circuit and over-energy protection mechanisms. In the event of loop abnormality such as short circuit or overload, the affected channel automatically triggers power limiting and fault protection. The protection operates independently without interfering with other normal channels, effectively preventing system-level shutdown and maximizing overall operational reliability.

High-Stability Field Power Distribution

Optimized for low-resistance field wiring conditions, the module minimizes voltage drop and signal distortion during long-distance power transmission. It supplies clean, stable and consistent power to intrinsically safe sensors, transmitters and various low-power field automation devices, enabling reliable 24/7 continuous operation of on-site control loops.

Precision Energy Limiting for Hazardous Area Compliance

The module precisely restricts open-circuit voltage, short-circuit current, as well as allowable external inductance and capacitance parameters. With standardized IIC entity parameter limits, it fully complies with intrinsic safety specifications for high-grade hazardous areas. It provides reliable explosion-proof protection for petrochemical, fine chemical, pharmaceutical, water treatment and other explosion-prone industrial applications.

Frequently Asked Questions (FAQ)

1.How fast will you reply to my inquiry?

We process all inquiries efficiently and will respond promptly once we receive your message.

2.Do you carry large inventory of industrial control parts?

We maintain massive ready stock of mainstream automation spare parts to shorten lead times.

3.Can you source discontinued or obsolete PLC & DCS modules?

Absolutely.
We specialize in sourcing hard-to-find, obsolete and out-of-production industrial control components.

4.Do you inspect goods before shipment?

Every product undergoes thorough inspection before packing and dispatch.

5.Can you ship orders worldwide?

We provide global shipping with flexible logistics for urgent and regular orders.

6.What payment methods are available?

We accept multiple secure payment options. Please contact our sales team for detailed terms