CCC IOC-555-DP Digital I/O Module with Line Interface

Product Description

IOC-555-DP is a Profibus‑DP digital I/O module of CCC IOC-555 series, a rack-mounted signal acquisition and output card for centrifugal compressor control systems. It provides isolated digital inputs, relay outputs, on-board channel diagnostics and watchdog fault detection. With Profibus‑DP fieldbus interface, it communicates with main controllers to collect discrete machine status and drive solenoid valves & interlock relays. Hot-swap capable and EMC-hardened, it is widely used for anti-surge and machinery protection control of compressors in oil & gas and petrochemical industries.

Specifications

• Part Number: IOC-555-DP (Profibus-DP variant, base PN:17-550555-001)
• Manufacturer: CCC (Compressor Controls Corporation)
• Communication: Profibus‑DP, up to 12 Mbps
• I/O allocation: 8 isolated digital inputs, 8 relay digital outputs
• Power Supply: 24 VDC ±10%, reverse polarity & short-circuit protection
• Isolation: Galvanic isolation between channels and bus
• Diagnosis: Per-channel LED indicator, built-in self-test, watchdog
• Mounting: CPCI rack form factor, hot swap supported
• Operating Temperature: -40℃ ~ +85℃
• Humidity: 5%~95% RH, non-condensing
• Protection: PCB conformal coating, IP20 for cabinet installation
• Bus Role: Profibus‑DP Slave

Application

1. Anti-surge control system for centrifugal compressors in oil, gas and refinery plants
2. Compressor start/stop interlock, ESD emergency shutdown signal acquisition and output
3. Natural gas pipeline boosting units and process gas compressor packages
4. Refrigeration and chiller compressor pack control
5. Networking with CCC main controllers, interfacing to DCS and SCADA host systems

Series Part Numbers (CCC IOC-555 Family)

• IOC-555-D (RS485 / Modbus version)
• IOC-555-DP (Profibus-DP version, this item)
• TIOC-555HD (High-density IOC board)
• MCP-1004 (Main processor module)
• PSMU-350-3 (Power supply module)