Detailed Parameter Table
| Parameter name | Parameter value |
|---|---|
| Product model | 1797‑PS2E2 |
| Manufacturer | Allen‑Bradley / Rockwell Automation |
| Product category | Intrinsically safe DC power supply module (FLEX Ex series) |
| Input voltage (unsafe side) | 18 … 32 V DC |
| Input current consumption | 1.6 … 3.1 A (depending on load) |
| Output channels | 4 independent intrinsically safe outputs |
| Output power per channel | 8.5 W per channel |
| Protection / enclosure | IP65 / NEMA 7B flame-proof enclosure |
| Ambient operating temperature | –20 °C … +70 °C |
| Physical dimensions | ~140 mm × 174 mm × 280 mm (H × W × D) |
| Certifications / explosion protection | Ex de [ib] IIC T4 Gb (IECEx & ATEX) |
| Weight / power dissipation | Approx. 55 W input / 21 W dissipation |
Product Introduction
The Allen‑Bradley 1797‑PS2E2 is a high‑integrity DC power supply module from the FLEX Ex series, designed to deliver intrinsically safe (IS) power in hazardous areas. It converts unsafe incoming power into safe, limited outputs across four independent channels, providing a critical backbone for field devices in hazardous zones.
Built with a flame-proof IP65 enclosure, 1797‑PS2E2 is suitable for Zone 1 or Zone 2 hazardous areas. The module ensures galvanic isolation between its input and IS outputs, protecting downstream devices from faults or surges. Redundant input feeds and independent channels support high system availability and minimize downtime.
In process automation, 1797‑PS2E2 powers FLEX Ex I/O modules, sensors, and actuators, simplifying wiring and reducing the need for external barriers. Its precise output regulation and channel isolation ensure safe operation and system integrity, making it a cornerstone in intrinsically safe architectures.
Core Advantages and Technical Highlights
Reliable Intrinsic Safety Isolation:
1797‑PS2E2 separates unsafe power from intrinsically safe outputs, ensuring protection of downstream devices and compliance with industrial safety standards.
Independent Channels:
Four independent IS channels allow single-channel faults without impacting other outputs, improving reliability and simplifying maintenance.
Dual Input Redundancy:
The dual input feed enables redundancy, enhancing system uptime in critical processes.
High Power Delivery:
Each channel delivers up to 8.5 W, supporting a wide range of sensors, transmitters, and actuators.
Harsh Environment Suitability:
Its IP65 / NEMA 7B enclosure withstands dust, moisture, and mechanical stress. Operating range –20 °C to +70 °C ensures stable performance under industrial extremes.
Certified for Hazardous Locations:
Ex de [ib] IIC T4 Gb certification ensures safe operation in Zone 1 / Zone 2 areas.
Simplified Wiring and Maintenance:
By supplying IS power directly, 1797‑PS2E2 reduces the need for external barriers. Hot-swap capability allows maintenance with minimal downtime.
Typical Application Scenarios
The 1797‑PS2E2 is ideal for hazardous-area instrumentation in oil & gas, petrochemical, chemical, pharmaceutical, mining, and utility plants:
-
Field I/O in Zone 0/1 areas: Provides safe power to FLEX Ex I/O modules near process equipment.
-
Hazardous sensor networks: Powers temperature, pressure, flow, or level sensors safely in explosive environments.
-
Actuator and valve control: Supplies solenoids or actuators with intrinsically safe power.
-
Retrofit and system expansion: Replaces multiple external barriers with a centralized IS power source.
-
High-availability systems: Channel-level isolation and dual inputs ensure reliable operation under partial failures.
By integrating 1797‑PS2E2, industrial systems achieve safer, simpler, and more robust hazardous-area power distribution.
Related Model Recommendations
-
1797‑PS2E1 — Earlier or alternate power supply variant, suitable for similar applications.
-
1797‑PS1E2 — Single-channel variant for lower power or simpler systems.
-
1797‑PS4E2 — Higher-capacity module for systems with more devices or higher power requirements.
-
1797‑PS2E3 — Upgraded revision with enhanced components or certifications.
-
1797‑PA1E2 — Complementary distribution module for routing IS power.
-
1797‑PX1E1 — Auxiliary interface module for extending power or signal paths.
-
1797‑PS2E series — The general series to which 1797‑PS2E2 belongs, sharing platform and configuration standards.
Installation, Commissioning and Maintenance Instructions
Installation preparation:
Ensure the mounting surface is rigid with proper clearance for ventilation and cable entry. Use wiring rated for hazardous areas, observing separation between unsafe and IS lines. Grounding and bonding must comply with safety requirements. De-energize input power before installation.
Commissioning:
Mount 1797‑PS2E2, connect dual input feeds and route the four IS outputs to field devices or FLEX Ex modules. Verify polarity, separation, and secure connections. Power up, monitor LEDs or diagnostics, and measure output voltages under load. Confirm channel isolation and proper regulation.
Maintenance suggestions:
Regularly inspect seals, cable glands, and enclosure integrity. Check output parameters for drift or anomalies. Monitor internal temperature and ripple. Replace any faulty channels with certified modules and retest system functionality. Only authorized personnel should open the enclosure to preserve certifications.
Service and Guarantee Commitment
Allen‑Bradley ensures that each 1797‑PS2E2 unit undergoes rigorous factory testing and certification for intrinsic safety and performance. A standard warranty covers defects in materials or workmanship.
Authorized service centers provide repair, replacement, and recalibration services. Technical support is available for configuration, troubleshooting, and integration into hazardous-area systems. With comprehensive after-sales support, spare parts availability, and adherence to safety standards, 1797‑PS2E2 is backed for reliable and safe operation in critical industrial environments.
RELIANCE ELECTRIC 15FR4042 FLEXPAK 7.5/15HP DC DRIVE
RELIANCE ELECTRIC SERVO MOTOR 1326AB-B530E-21-K5L
RELIANCE ELECTRIC 800123-T TACHOMETER RESOLVER 800123T
RELIANCE ELECTRIC 2GU41030 GP2000 30HP 460V AC DR*XLNT*
NIB Reliance Electric 375 Watt Power Supply 0-57493
RELIANCE ELECTRIC 11C83K NSFP 11C83K
Reliance Electric 2GU41100 100HP GP2000 VS Drive 100 HP
RELIANCE ELECTRIC T18R1105U NSPP T18R1105U
RELIANCE ELECTRIC 805401-15 USPP 80540115
RELIANCE ELECTRIC 45C-341 NSPP 45C341
Reliance Electric Induction AC Servo VZ3000 UVZ3202 OPC
RELIANCE ELECTRIC RECTIFIER STACK 86466-74RB
Expedited shipping available
RELIANCE ELECTRIC 0-54219-2 USPP 0542192
RELIANCE ELECTRIC 86466-77S NSPP 8646677S
RELIANCE ELECTRIC DPS1A NSFP DPS1A
RELIANCE ELECTRIC 45C-410C NSPP 45C410C
RELIANCE ELECTRIC 45C-344 NSPP 45C344
RELIANCE ELECTRIC 837.35.11B USPP 8373511B
Reliance Electric Company 0-51865-1 Board 0518651
One-day shipping available
Reliance Electric 837′ 05-00 AC/DC Converter Minitron
