Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CC-PSP401 |
| Part Number | 51454122-175 |
| Brand | Honeywell |
| Module Type | Speed Protection Module (SPM) |
| System Platform | Honeywell Experion PKS / Series C |
| Associated IOTA | CC-TSP411 Speed Protection IOTA |
| Origin | USA |
| Operating Temp | -40 deg C to +70 deg C |
| Power Consumption | 24 VDC backplane supply, value not specified |
| Speed Input Channels | 4 channels for passive magnetic probes and active 24 V probes |
| Frequency Range | 1 Hz to 25 kHz |
| Digital Input Channels | 8 configurable channels, 22-28 VDC |
| Analog Input Channels | 8 channels, 0-5 V or 4-20 mA |
| Relay Outputs | 4 channels, Form A/B selectable |
| Relay Output Rating | 230 VAC at 0.5 A / 24 VDC at 2 A |
| Analog Output | 1 channel, 4-20 mA |
| Speed Measurement Accuracy | +/- 0.05% of reading, 16-bit resolution |
| Trip Response Time | Less than 1 ms internal logic, less than 40 ms total cycle |
| Input Isolation | +/- 1000 VDC passive probe isolation, 1500 VAC channel isolation |
| Diagnostics | Zero speed detection, reverse rotation monitoring, missing tooth detection, loop integrity checking |
| Mounting Method | Series C chassis mounting through IOTA |
Process Control Signal Isolation and Speed Monitoring
The CC-PSP401 applies isolated input processing for rotating equipment speed signals and converts probe frequency data into protection logic actions. The module accepts magnetic pickup signals and active speed sensor inputs while maintaining channel separation for safety-related measurements.
In addition, the module supports channel-to-channel isolation for electrical separation between field circuits and internal processing electronics. The design allows integration with industrial protection loops where 4-20 mA feedback signals and discrete trip contacts require controlled signal handling.
The module executes speed supervision functions including overspeed detection, zero-speed monitoring, reverse rotation detection, and missing tooth identification. Therefore, the protection logic can evaluate abnormal rotor conditions and initiate trip outputs through configured relay channels.
Frequently Asked Questions
Q: Does the CC-PSP401 support redundant operation in a Series C chassis?
A: Yes. The module supports redundant configurations when installed with the compatible CC-TSP411 Speed Protection IOTA arrangement. The redundancy function depends on the configured chassis architecture and system settings.
Q: What type of field speed signals can the CC-PSP401 process?
A: The module accepts passive magnetic probe signals and active 24 V speed sensor inputs. It processes frequency-based speed signals within the specified input range.
Q: Does the module provide isolated protection outputs?
A: Yes. The CC-PSP401 provides relay outputs with selectable Form A/B configuration and maintains electrical separation between field circuits and module processing sections.
Field Installation Guidelines
Install the CC-PSP401 in the designated Honeywell Series C chassis position with the correct IOTA assembly. Verify that the module seating mechanism fully engages before applying system power.
Route speed probe wiring separately from high-voltage power conductors and switching circuits to reduce electrical interference. Use shielded signal cables where required, and terminate cable shields according to the plant grounding practice.
Confirm probe polarity, signal type, and field wiring continuity before commissioning. Check speed input signals, relay output states, and diagnostic indicators through the Experion PKS engineering interface before placing the protection channel into service.
Maintain proper grounding between the chassis, IOTA, and field instrumentation circuits. Avoid unauthorized wiring changes because incorrect field connections can affect speed measurement accuracy and trip response behavior.
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