Description
Product Overview
The Reliance Electric 45C922 is a rack-mounted power supply module for the Shark XL programmable-controller family. Its primary job is to convert incoming AC power into the DC rails required by compatible rack electronics and supported output circuits. This is a power-distribution component rather than a processor, communications card, or field I/O module. In an existing control cabinet, a failed power supply can interrupt the operation of multiple rack components, making correct replacement selection important for maintenance planning.
The Reliance Electric 45C922 accepts either 115 VAC or 230 VAC, selected through the module’s input-voltage jumper arrangement. The documented input frequency range is 47–63 Hz, with input current at or below 600 mA. Its three specified output channels provide 5 VDC at up to 1.7 A, 24 VDC at up to 500 mA, and a further 24 VDC channel at up to 250 mA. These ratings must be considered together when checking rack loading. The total demand from installed modules and supported output circuitry must remain within the applicable channel limits.
The Reliance Electric 45C922 is most relevant to facilities maintaining legacy Shark XL equipment where redesigning the controller rack would create additional engineering work. Before installation, verify the rack model, voltage-jumper position, wiring, and DC load requirements. Although the 45C920 and 45C921 belong to the same power-supply family, their input arrangements differ, so they should not be treated as automatic substitutes. The model is reported as discontinued; procurement should therefore include revision identification, condition verification, and functional-test documentation.
Product Introduction (Non-Templated)
When a legacy PLC rack loses its DC supply, the fault can affect more than one module. The Reliance Electric 45C922 provides the AC-to-DC power rails required by compatible Shark XL rack equipment, with selectable 115/230 VAC input and defined 5 VDC and 24 VDC output channels.
Replacement checks should start with the rack configuration and measured load, followed by confirmation of the voltage-jumper setting and the condition of the replacement module. A matching part number does not eliminate the need to verify electrical compatibility.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 45C922 |
| Manufacturer | Reliance Electric |
| Product Family | Shark XL / Shark XL II |
| Product Type | Rack power supply module |
| Input Voltage | 115 VAC or 230 VAC, jumper-selectable |
| Input Frequency | 47–63 Hz |
| Maximum Specified Input Current | 600 mA |
| DC Output Channel 1 | 5 VDC, up to 1.7 A |
| DC Output Channel 2 | 24 VDC, up to 500 mA |
| DC Output Channel 3 | 24 VDC, up to 250 mA |
| Installation | Dedicated power-supply slot in a compatible controller rack |
| Communication Protocol | Not applicable to the power supply function |
| Programming Requirement | No user programming identified for the power supply module |
| Product Status | Reported discontinued |
Installation note: De-energize the rack before changing the module. Confirm the input-voltage jumper, rack wiring, output load, and the applicable installation manual before applying power.
45C922
Related Products
The following parts are associated with the Shark XL control family. They have different functions or input requirements and are not all direct replacements for the 45C922.
- 45C920 — Shark XL AC power supply module with 115/230 VAC input. Verify its ratings and rack compatibility before substitution.
- 45C921 — Shark XL power supply module designed for 24 VDC input. Its input type differs from the 45C922.
- 45C913 — Shark XL rack assembly used to house compatible controller modules. Confirm rack size and slot configuration.
- 45C914 — Shark XL seven-slot rack. Relevant when checking the physical rack configuration for maintenance or replacement planning.
- 45C918 — Shark XL nine-slot rack assembly. Check the existing installation and required module positions before selecting a rack.
- 45C940 — Shark XL eight-point AC input module. This is an input module, not a power supply.
- 45C941 — Shark XL 16-point AC input module. Used for digital input acquisition in compatible systems.
- 45C945 — Shark XL 24 VDC digital input module. Its I/O function is separate from the 45C922 power supply.
Frequently Asked Questions
1. What does the Reliance Electric 45C922 power supply module do?
It supplies DC power to compatible Shark XL controller-rack electronics and supported output circuitry. It is not a CPU or an I/O module.
2. Can the 45C922 operate on both 115 VAC and 230 VAC?
Yes. The input is jumper-selectable for 115 VAC or 230 VAC. The jumper setting must match the actual supply voltage before the rack is energized.
3. Can I hot-swap this module while the PLC rack is running?
Do not assume hot-swapping is supported. The available references do not establish that the 45C922 can be removed under power without risk. Follow the applicable rack manual and site lockout procedure, and assess the impact of losing the rack’s DC supply before removing the module.
4. Does the 45C922 support firmware v3.1?
Firmware v3.1 compatibility is not established for this power supply module. It provides electrical power rather than executing application logic. If the version reference concerns the PLC processor or another Shark XL component, verify that component’s exact model and documentation separately.
5. What are the output ratings of the 45C922?
The documented channels are 5 VDC at up to 1.7 A, 24 VDC at up to 500 mA, and another 24 VDC channel at up to 250 mA. Check the individual channel limits against the actual rack and output-circuit loads.
6. Can I replace the 45C922 with a 45C920 or 45C921?
Not without a compatibility review. The 45C920 is another AC-input supply, while the 45C921 uses 24 VDC input. Compare the input requirements, output ratings, rack fit, and wiring before considering a substitute.
7. What should I check when purchasing a replacement 45C922?
Request photographs of the nameplate, terminal and jumper areas, and connector interfaces. Confirm the unit’s condition, inspect for corrosion or heat damage, and ask for documented power-up and output-voltage tests under load where practical. Since the model is reported discontinued, also establish the warranty terms and return conditions before installation.
