Honeywell |CC-PAIL51|Analog Input Module for Temperature (RTD & TC)

Description

The CC-PAIL51 is a low-level analog input module designed for industrial automation and process control, specifically for temperature measurement. It accepts up to 16 channels of temperature inputs from RTD (Resistance Temperature Detectors) and thermocouples (TC). The module supports remote cold junction compensation and provides fast, reliable temperature data with built-in open thermocouple detection (OTD) protection.

Features

• TC and RTD Operation: Supports both thermocouple and RTD inputs.
• Remote Cold Junction Compensation: Ensures accurate thermocouple measurements by compensating for ambient temperature variations.
• 1 Second PV Scanning with OTD Protection: Rapid 1-second update rate for temperature variables, including configurable open thermocouple detection.
• Configurable OTD Protection: Detects open thermocouples before propagating the temperature variable, preventing inappropriate control actions based on invalid data.
• Fully Isolated Channels: Channel-to-channel, channel-to-DCS, and channel-to-power supply common isolation for enhanced safety and accuracy.

Technical Specifications

• Model: CC-PAIL51 - Low Level Analog (Temperature) Input
• IOTA Model:
  • DC-TAIL51: Non-redundant, 9 inches
• Input Type: Thermocouple and/or RTD
• Channels: 16 fully-isolated channels
• Input Scan Rate: 1 second (fixed by IOM)
• Channel Bandwidth: 0 to 4.7 Hz (-3 dB)
• Nominal Input Range (TC only): -20 to +100 millivolts
• Maximum Normal Mode Continuous Input (Non-Damaging):
  • Thermocouple: -10 to +10 volts
  • RTD: -1 to +2 Volts @ 100 milliamps
• Gain Error (-20 to +100 millivolt range): 0.050% full scale max
• Temperature Stability:
  • Thermocouple, millivolt inputs: ±20 ppm per deg C max
  • RTD inputs: ±20 ppm per deg C max
• Long-Term Drift: 500 ppm
• Input Impedance: 1 megohm at dc (thermocouple only)
• Common Mode Voltage (CMV) with respect to Power System Common, dc to 60 Hz: ±250 VDC or VAC RMS

Sampling and Open Sensor Detection

• Open Sensor Detect (OTD): Configurable parameter that checks for open thermocouples before propagating the process variable (PV).
• PV Sampling/Reporting: No added delays from OTD processing. If OTD is positive, the PV is set to NAN, and the input channel soft failure is set, preventing inappropriate control actions based on invalid data.