PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1797-PS1N FLEX I/O Power Supply provides regulated power in intrinsically safe control architectures. The unit accepts input voltages from 85 to 250 VAC or 120 to 250 VDC. It supplies four isolated intrinsically safe DC outputs. Each channel provides up to 8.5 Watts of output power. The device mounts directly in classified hazardous locations.
This power supply module is packaged within an explosion-proof enclosure with one-inch wire entries. It accommodates AC line frequencies from 47 to 63 Hz. Maximum power dissipation is 21 Watts, generating 71.67 BTU per hour thermal dissipation. The unit operates within ambient temperatures from minus 4 to 158 degrees Fahrenheit. It supplies power to Flex Ex modules and field devices.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| UPC | 612598182978 |
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| Weight | 11.44 lbs (5.19 kg) |
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| Input Connectors | 85-250V AC |
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| Voltage Range | 120-250V DC |
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| Input Frequency | 47-63 Hz |
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| Current Consumption | 0.9-0.35 A |
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| Output Power | 4 x 8.5 W |
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| Voltage | 9.5V |
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| Power Dissipation | 21 W |
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| Thermal Dissipation | 71.67 BTU/hr |
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| Input Power | 55 W |
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| Output Isolation | IS Galvanically isolated output channels |
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TECHNICAL INFORMATION
Features
- Quad-channel intrinsically safe DC outputs rated at 8.5 Watts per channel
- Universal electrical input supporting 85 to 250 VAC and 120 to 250 VDC
- Independent galvanic isolation across each intrinsically safe output channel
- Explosion-proof enclosure design equipped with one-inch conduit entry hubs
- Operating current consumption rating between 0.9 and 0.35 Amperes
TECHNICAL INFORMATION
Applications
- Power delivery for 1794 series Flex Ex distributed input and output modules
- Intrinsically safe field device power across Class I Division 1 locations
- Power distribution for hazardous-location communication adapters and fiber hubs
TECHNICAL INFORMATION
Connections / Interfaces
- One-inch threaded wire conduit entries for power input and output terminations
- Field wiring terminals accommodating conductors up to 4 square millimeters or 12 AWG
- Four independent intrinsically safe output terminal connections
TECHNICAL INFORMATION
Installation Guidelines
- Use power supply wiring rated for at least 100 degrees Celsius or 212 degrees Fahrenheit
- Maintain a maximum wire insulation thickness of 1.2 millimeters or 3/64 inches
- Install the module inside an approved NEMA 7B or IP66 hazardous-location enclosure
TECHNICAL INFORMATION
Configuration Guidelines
- Verify that the power demand on each channel does not exceed 8.5 Watts
- Ensure input voltage stays within 85-250 VAC or 120-250 VDC boundaries
TECHNICAL INFORMATION
Compatibility
- Allen-Bradley 1794 series Flex Ex I/O modules
- Hazardous-location communication adapters and fiber hubs
TECHNICAL INFORMATION
Compliance and Certifications
- Class I Division 1 Groups A, B, C, D T4 (UL and C-UL)
- Class II Division 1 Groups E, F, G (UL and C-UL)
- Class III (UL and C-UL)
- NEMA 7B and IP66 enclosure ratings
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSAllen-Bradley 1794 series Flex Ex I/O modules Hazardous-location communication adapters and fiber hubs
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the output capacity of the Allen-Bradley 1797-PS1N?
The module provides four intrinsically safe channels. Each channel delivers up to 8.5 Watts of DC power.
What input voltages does the 1797-PS1N power supply accept?
The power supply operates from 85 to 250 VAC at 47-63 Hz or 120 to 250 VDC.
What hazardous location ratings apply to the 1797-PS1N?
The unit carries UL and C-UL ratings for Class I, II, and III Division 1 locations.
