Product Description
Product Overview
- The Honeywell CC-PSP401 51454122-175 Speed Protection Module (SPM) is a Series C I/O module engineered for over-speed protection in turbomachinery applications within Honeywell’s Experion Process Knowledge System (PKS). This module accepts up to four speed probe signals, performing onboard signal conditioning and two-out-of-three voting to ensure accurate speed regulation through a C300 controller’s control loop. It provides limit value monitoring to trigger an over-speed trip protection relay on its IOTA (Input/Output Termination Assembly), alongside versatile I/O capabilities for fast applications like centrifugal compressor anti-surge control.
Features
- Accepts up to four pulse input signals with two-out-of-three voting and computes speed and acceleration
- Accepts up to eight digital input signals, configurable as "trip" inputs in protection logic
- Provides up to four digital output signals on activation of protection criteria
- Multiple configurable trip limits for speed and acceleration
- Overall loop latency from input change to triggering protection device within 40 ms
- Accepts up to eight analog input signals
- Provides one analog output signal
- Point processing at 2.5 ms (pulse inputs) and 10 ms (analog inputs)
- Supports redundant solution
- Supplies non-incendive field power
- Field diagnostics supported: zero speed, reverse rotation, missing/deformed tooth, open wire detection (AI and DI), current readback (AO)
- Hardware/software diagnostics: PV qualification for AI and DI
I/O Interfaces Supported
- Analog Inputs: 8 channels
- Analog Outputs: 1 channel
- Digital Inputs: 8 channels
- Digital Outputs: 4 channels
- Speed (Active/Passive Probes) Inputs: 4 channels
Technical Information
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Model/Part Number | CC-PSP401 51454122-175 |
| Description | Speed Protection Module (SPM) |
| Input/Output Model | CC-PSP401 - Speed Protection Module CC-TSP411 Redundant 18" |
| Speed (Active/Passive Probes) Inputs | |
| Input Channels | 4 |
| Galvanic Isolation (any input terminal voltage referenced to common) | ±1000 VDC for passive probes interface |
| Isolation Technique | Isolation transformer (on IOTA) for passive probes interface |
| Input Type | Magnetic pickup: min. > 0.5 Vpk, max. < 42 Vpk Active pickup: OFF < 1 VDC, ON > 3.5 VDC (TTL); OFF < 6 V, ON > 10 V @ 24 V |
| Input Frequency Range | Magnetic pickup: 150 Hz to 25 kHz Active pickup: 1 Hz to 10 kHz |
| Active Input Excitation | 5 or 24 V DC |
| Resolution | 0.015% of upscale |
| Accuracy | 0.05% of the reading |
| Input Impedance | Passive: 2 kΩ @ 1 kHz Active: > 1.5 kΩ |
| Input Scan Rate | 2.5 ms |
| Digital Outputs | |
| Output Channels | 4 isolated Form A (SPST/NO) or Form B (SPST/NC) contacts (jumper selectable per output) |
| Contact Type | Gold-clad silver nickel |
| Maximum Load Voltage | 230 VAC (RMS) / 24 VDC |
| Maximum Steady State Load Current per Output | 0.5 A @ 230 VAC (resistive load, inductive load with 0.4 power factor) 2 A @ 24 VDC (resistive load) |
| Minimum Load Voltage | 5 VDC |
| Minimum Load Current | 10 mA |
| Isolation (Channel-to-channel, and channel-to-logic common) | 1500 VAC RMS or ±1500 VDC |
| Turn On Time | 20 ms maximum |
| Turn Off Time | 20 ms maximum |
| Contact Life | 10,000,000 operations (mechanical life) 200,000 @ 3 A (100% load) |
| Surge Absorber for Coil | 120 Ω + 0.03 µF for each channel |
| Analog Inputs | |
| Input Type | Voltage, current (2-wire or self-powered transmitters) |
| Input Channels | 8 |
| Common Mode Voltage, DC to 60 Hz | -6 to +5 V peak |
| A/D Converter Resolution | 16-bits |
| Input Range | 0 to 5 V, 1 to 5 V, 0.4 to 2 V, 4-20 mA (through 250 Ω) |
| Maximum Normal Mode Input (differential inputs, no damage) | ±30 V |
| Input Impedance (voltage inputs) | > 10 MΩ powered |
| Maximum Input Voltage (any input referenced to common, no damage) | ±30 V |
| Input Scan Rate | 10 ms |
| Hardware Accuracy (@ CMV = 0 V) | ±0.075% of full scale (23.5°C ± 2°C) ±0.15% of full scale (0 to 60°C) |
| Analog Output | |
| Output Type | 4-20 mA |
| Output Channels | 1 |
| Output Ripple | < 100 mV across 250 Ω load |
| Output Temperature Drift | 0.005% of full scale/°C |
| Output Readback Accuracy | ±4% of full scale |
| Output Current Linearity | ±0.05% of full scale nominal |
| Resolution | ±0.05% of full scale |
| Calibrated Accuracy | ±0.35% of full scale (25°C) including linearity |
| Directly Settable Output Current Range | 0 mA, 2.9 mA to 21.1 mA |
| Maximum Resistive Load (24 V supply = 22 VDC through 28 VDC) | 760 ohms |
| Maximum Output Compliant Voltage (24 V supply = 22 VDC through 28 VDC) | 16 V |
| Maximum Open Circuit Voltage | 18 V |
| Response Time (DAC input code to output) | 1 ms |
| Gap (0 mA) of Output to Field on Switchover | 15 ms maximum |
| Digital Inputs | |
| Input Channels | 8 |
| DI Power Voltage Range | 22 to 28 VDC |
| ON Sense Voltage/Current | 13 VDC (min.) or 6.12 mA (min.) |
| OFF Sense Voltage/Current | 5 VDC (max.) or 2.1 mA (max.) |
| Input Impedance | 4.6 kΩ |
| Absolute Delay Across Input Filter and Isolation | 1.78 ms |
| Field Resistance for Guaranteed ON Condition | 300 Ω max. @ 15 VDC |
| Field Resistance for Guaranteed OFF Condition | 30 kΩ min. @ 30 VDC |
Specific Configuration
- Model/Part Number: CC-PSP401 51454122-175
- Configuration Details:
- No suffix or option codes specified beyond model number, indicating a standard configuration