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Honeywell CC-PSP401 Speed Protection Module

Configured for speed monitoring and overspeed trip execution in Honeywell Experion PKS and Series-C C300 platforms, the Honeywell CC-PSP401 51454122-175 (CC-PSP401 Speed Protection Module) provides direct physical/electrical execution for rotating equipment protection circuits.

Hardware Specifications

Parameter	Specification
Model	CC-PSP401
Brand	Honeywell
Origin	USA
Weight	Approx. 0.5 kg
Dimensions	Approx. 172 mm x 102 mm x 41 mm
Operating Temp	0 deg C to 60 deg C
Power Consumption	24 VDC input, less than 10 W typical module load
Product Type	Speed Protection Module (SPM)
Part Number	51454122-175
System Compatibility	Honeywell Experion PKS, Series-C C300
Input Channels	4 speed pulse input channels
Digital Inputs	Up to 8 configurable digital inputs
Digital Outputs	4 isolated relay outputs, Form A/Form B selectable
Output Rating	2 A @ 24 VDC, 0.5 A @ 230 VAC resistive
Isolation Voltage	Greater than or equal to 1500 VAC RMS between field channels and backplane
Mounting Type	Series-C IOTA vertical mounting assembly
Trip Response Time	Approx. 40 ms from speed condition detection to trip output execution

Channel Isolation and Process Signal Handling

The CC-PSP401 integrates dedicated speed signal processing channels for frequency-based input measurement from rotating equipment sensors. The module performs pulse detection, signal conditioning, and hardware trip evaluation before activating configured relay outputs.

Honeywell Series-C architecture applies channel-to-channel isolation techniques to separate field wiring signals from internal backplane communication paths. This isolation design reduces electrical interference coupling between independent measurement circuits and supports stable operation in industrial control environments.

The module supports configurable voting logic for speed protection applications, including 2oo3 style protection schemes when implemented within the associated control architecture. Input filtering and signal validation functions are used to maintain consistent trip decision processing under variable field signal conditions.

Frequently Asked Questions

Q: What type of field signals can the CC-PSP401 process?
A: The module is designed for speed-related pulse input signals from active or passive speed sensing devices. It processes frequency changes and executes configured protection outputs based on application logic.

Q: Can the CC-PSP401 be replaced while the Series-C system is operating?
A: The module supports hot-swap operation when installed in a compatible redundant Series-C IOTA configuration. Replacement procedures must follow Honeywell system maintenance requirements.

Q: What output interface is provided for shutdown commands?
A: The module provides isolated relay contact outputs configured as Form A (normally open) or Form B (normally closed) contacts for external trip circuits.

Field Installation Guidelines

• Install the module only in the designated Honeywell Series-C IOTA mounting assembly.
• Verify backplane connection alignment before module insertion or removal.
• Use properly shielded field wiring for speed pulse input circuits where electromagnetic interference may affect signal quality.
• Connect cable shields according to the site grounding standard to prevent unwanted signal noise coupling.
• Separate low-level speed measurement wiring from high-voltage power and motor drive cables.
• Confirm relay output contact configuration before connecting external shutdown circuits.
• Check field terminal assignments and application configuration parameters before commissioning.

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