Overview
Manuals
Use Cases
Certifications & Standards
Features:
- Robust power supply module designed for the SLC 500 series
- This module supports a variety of input voltage levels from 85 to 132 volts AC and 170 to 265 volts AC
- Functioning within a frequency range of 47 to 63 Hz. It is well-suited for demanding environments and rated for Class I Division 2 hazardous locations
The Allen Bradley SLC 500 Series power module 1746-P4 delivers reliable and efficient performance in a wide range of applications. A significant feature is its maximum inrush current of up to 45 amps, ensuring stable operation during startup. Internal current capacity is up to 10 amps at 5V DC and up to 2.88 amps at 24V DC. This flexibility makes it suitable for a variety of control applications in various environments.
The unit incorporates a non-replaceable fuse to effectively prevent damage from overcurrent. The module's wiring configuration allows for the connection of two wires with a maximum diameter of 14 AWG to each terminal, facilitating integration into existing systems. Compliant with Class I Zone 2 hazardous location standards, this module underscores its suitability for safety-critical environments. The module operates within a temperature range of 0 to 60 degrees Celsius, adapting to a wide range of environmental conditions; furthermore, it can be stored in extreme temperatures ranging from -40 to 85 degrees Celsius, enhancing its versatility and reliability in harsh environments.
The 1746-P4 Allen Bradley Power supply module may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen Bradley 1746-P4 Power supply module Manuals(Datasheets), Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
1. High-capacity and Largest Slot Chassis Deployment:
13-Slot and 10-Slot Chassis: The primary application scenario for the 1746-P4 is powering fully loaded 10-slot and 13-slot SLC 500 chassis. Since each active I/O module draws a small amount of current from the backplane, large chassis can quickly deplete the standard power budget.
Multi-Chassis Network Expansion: In distributed applications, multiple local racks are connected via chassis expansion cables (1746-C7 or 1746-C9), and the P4 ensures stable voltage for expansion bus communication.
2. High-Density Digital and Analog I/O Racks:
High-Density 32-Channel Digital Switches: Systems that stack multiple high-density digital modules (such as 32-point 1746-IB32 or 1746-OB32) require significant current reserves. The 1746-P4 prevents backplane voltage drops when all 32 channels on multiple cards are simultaneously locked to the "on" state.
Analog and Smart Coprocessor Arrays: Analog input/output cards (1746-NI8, 1746-NO4), thermocouple modules (1746-NT4), and dedicated coprocessors require significant 5V and 24V DC power to drive internal analog-to-digital converters and signal isolation circuitry. The P4 can easily power these high-power modules.
3. Global Industrial Environments
Grid Fluctuations: Dual-Voltage Switchable Infrastructure (120V/240V AC): The 1746-P4 features convenient internal jumpers, making it widely applicable to factories using North American standard 120V AC (85–132V) control circuitry and European/Asian 240V AC (170–265V) distribution networks.
Robust electrical noise and surge protection: In heavy industrial environments such as steel mills, foundries, and wastewater treatment plants, where large motors frequently start and stop, the P4 is highly favored for its superior built-in line filtering capabilities. It can handle brief power line voltage drops (with a voltage hold-up time of up to 20 milliseconds) and absorb input voltage spikes, thus protecting expensive PLC processors.
1. North American Industrial and Hazardous Goods Safety Certification (NAIS&HA)
UL Certification: Officially certified by Underwriters Laboratories (UL) in the United States, conforming to UL 508 standards, indicating that the product is a qualified industrial control device.
CSA Certification: Certified by the Canadian Standards Association (CSA), conforming to CSA C22.2 No. 142 process control safety requirements.
Class I, Zone 2 (Groups A, B, C, D): Explicitly approved by UL and CSA for safe operation in hazardous environments, even in the event of occasional flammable gases or vapors under abnormal conditions. Complies with ANSI/ISA 12.12.01-2013 and CAN/CSA C22.2 No. 213-M1987 standards regarding non-flammable components.
2. International Electrical and Electromagnetic Directives
CE Mark: Fully compliant with all applicable EU directives and certified to the EN 61131-2 programmable controller standard, conforming to the Low Voltage Directive (LVD). C-Tick (RCM) Certification: Officially verified according to the Australian Radio Communications Act and AS/NZS 2064 standards, ensuring its high-capacity switching circuitry filters out excessive RF radiation and industrial line noise.
3. Isolation and Surge Integrity: Dielectric Isolation:
Designed and certified to withstand up to 2600V DC for 1 second between input terminals and internal backplane logic, ensuring that high-voltage surges do not bypass the power supply and burn out the local CPU or I/O modules.
