Description
Honeywell FC-PSU-240516 | 5V 16A Controller Power Supply
Dynamic Product Introduction
Power-supply failures in a Safety Manager cabinet are rarely subtle. A degraded PSU can create controller faults, unexplained resets, or loss of system availability long before the module looks physically damaged. The Honeywell FC-PSU-240516 is the dedicated Safety Manager power-conversion module designed around that architecture: Honeywell specifies a 24 VDC input and regulated 5 V_LOAD / 5 V_R outputs, with each output rail capable of supporting up to 16 A.
That makes the FC-PSU-240516 a system component, not a generic DIN-rail replacement power supply. The distinction is important when planning a brownfield migration or emergency spare strategy. Voltage alone is not enough; the chassis interface, rail loading, redundancy arrangement, environmental limits, and module revision all have to match the installed Safety Manager configuration.
Honeywell identifies both FS-PSU-240516 and FC-PSU-240516 as type numbers for the same PSU family. The FC designation is the conformal-coated version, while Honeywell’s hardware reference also notes that modules carrying the V1.1 suffix contain modified components with no functional changes.
FC-PSU-240516
Key Technical Specifications
- Manufacturer: Honeywell
- Model: FC-PSU-240516
- System: Honeywell Safety Manager
- Module Type: Controller power supply
- Input Voltage: 24 VDC, -15% to +30%
- 24 V Input Current: <6 A at 24 V input with 16 A load
- Low-Line Input Current: <7 A at 20.4 V input with 16 A load
- Inrush Current: <5 A at 24 V input
- 5 V_LOAD Output: 0.5 A minimum / 16 A maximum
- 5 V_R Output: 0.5 A minimum / 16 A maximum
- Hold-Up Time: <1 ms
- Operating Temperature: -5°C to +70°C
- Storage Temperature: -40°C to +85°C
- Relative Humidity: 10–95%, non-condensing
- Dimensions: 176 × 35.2 × 212 mm (H × W × D)
- Weight: 0.85 kg
- Approvals: CE, TUV, UL, CSA, FM
Revision Note
Honeywell specifically states that V1.1 modules contain modified components but have no functional changes. If a replacement is being sourced for a running safety system, record the exact version marking rather than relying on the base model number alone.
Global Sourcing & Live-Test SOP
Inbound Verification
For an FC-, incoming inspection should establish both electrical identity and physical condition.
Record:
- marking
- FS/FC type designation where visible
- Hardware revision, including V1.1 if present
- Serial number and manufacturing information
- Input connector condition
- Backplane/interface contacts
- Mounting hardware and locking mechanism
- Enclosure condition
- Evidence of corrosion, contamination, overheating, or unauthorized repair
The supplied listing currently describes the unit as New – Open Box. That is a sales-condition statement, not evidence that the PSU has been tested under rated load.
Live Simulation
The correct test environment is an appropriate Honeywell Safety Manager controller chassis.
A meaningful acceptance test should include:
- Verify the 24 VDC input is within Honeywell’s specified range.
- Confirm correct module seating and mechanical retention.
- Power the authentic controller chassis.
- Monitor both 5 V_LOAD and 5 V_R supply rails.
- Verify controller startup and diagnostic status.
- Introduce an appropriate controlled load where the test setup permits it.
- Observe voltage stability during startup and sustained operation.
- Check for PSU or controller diagnostic alarms.
A bench test showing “5 V present” is not sufficient. The important question is whether the PSU remains stable while the actual Safety Manager chassis draws its required load.
Diagnostics
Use calibrated instrumentation when checking the output rails.
At minimum, record:
- 24 VDC input voltage
- 5 V_LOAD output
- 5 V_R output
- Startup behavior
- Output behavior under representative load
- Controller diagnostic status
- Any abnormal thermal behavior
The <1 ms hold-up time is particularly important when evaluating the PSU as part of the complete Safety Manager power architecture. It should not be interpreted as an independent ride-through or UPS function.
Final Preparation
Before the unit is released as a maintenance spare:
- Photograph the complete identification label.
- Record the hardware revision.
- Record measured input/output values from the test.
- Attach the functional-test record.
- Package using ESD-safe materials.
- Protect the connectors and mechanical interfaces from impact.
- Store according to Honeywell’s environmental limits.
Honeywell’s preventive-maintenance guidance also recommends increased attention to Safety Manager power supplies after 10 years of service, noting that failure probability increases with service age and recommending annual inspection under normal operating conditions.
Field Engineer’s Pitfall Guide
❗ Do not confuse the input voltage with the output voltage
The FC- accepts 24 VDC input. Its principal regulated outputs are 5 V_LOAD and 5 V_R, not 24 VDC output rails. Honeywell specifies up to 16 A on each 5 V rail.
This is an easy sourcing mistake because many industrial power supplies are described by their output voltage. Here, “24” in the model’s technical context should not be interpreted as “24 V output.”
Field lesson: Before energizing a replacement, trace the cabinet’s actual incoming supply and the PSU’s output rails. Never infer the electrical topology from the model name.
❗ Do not replace it with a generic 24 VDC-to-5 V converter
The FC- is mechanically and electrically integrated into the Safety Manager controller architecture. The relevant specifications include two 5 V supply rails, defined current capacity, chassis interface, environmental requirements, and safety-system approvals.
A generic converter may produce 5 V on a meter and still be unsuitable for the controller chassis.
Field lesson: This is one of those situations where “the voltage matches” is not a valid replacement criterion.
❗ Check the V1.1 marking before declaring a revision mismatch
Honeywell states that V1.1 contains modified components but no functional changes. That means the suffix deserves documentation, but it should not automatically be treated as a different electrical product.
Field lesson: Record the exact revision from the installed and replacement modules. Do not reject a V1.1 spare merely because the failed unit has an earlier marking; verify the applicable Honeywell hardware baseline first.
Intent-Driven FAQ
What is the Honeywell FC-?
The is a Honeywell Safety Manager controller power-supply module. It accepts 24 VDC and provides regulated 5 V_LOAD and 5 V_R rails for the Safety Manager chassis.
Is FC- a 24 VDC output power supply?
No. 24 VDC is the input. Honeywell specifies the output rails as 5 V_LOAD and 5 V_R, each with a maximum rated load of 16 A.
What is the maximum output current?
Honeywell specifies 16 A maximum for 5 V_LOAD and 16 A maximum for 5 V_R. The two rails should not be casually interpreted as one 32 A output; they are separate specified supply rails within the Safety Manager power architecture.
What is the operating temperature range?
Honeywell specifies -5°C to +70°C operating temperature and -40°C to +85°C storage temperature, with 10–95% relative humidity, non-condensing.
What does the V1.1 version mean?
Honeywell states that modules with the V1.1 suffix contain modified components, but there are no functional changes. The complete revision marking should nevertheless be recorded during replacement and maintenance documentation.
Is FC- suitable for a generic PLC cabinet?
Not as a general-purpose substitution. It is a Honeywell Safety Manager system power module with a dedicated chassis interface and defined dual 5 V supply architecture. Use the exact Honeywell hardware reference and installed chassis configuration when determining compatibility.
Does the open-box listing prove the PSU is functional?
No. The supplied listing identifies the unit as New – Open Box, but that describes its sales condition. It does not establish that the PSU has been tested at representative load inside a Safety Manager controller chassis.
Procurement Verdict
Honeywell FC- is a Safety Manager controller PSU built around a 24 VDC input and dual 5 V supply architecture. The numbers that matter most are 24 VDC input, 5 V_LOAD, 5 V_R, up to 16 A per rail, and <1 ms hold-up time.
For a brownfield Safety Manager installation, I would approve this part as a replacement candidate only after confirming:
- Exact FC- identification
- Hardware revision/V1.1 status
- Correct Safety Manager chassis compatibility
- 24 VDC source capacity
- 5 V_LOAD and 5 V_R loading
- Functional test under representative chassis load
