Honeywell 8C-PAIMA1 Analog Input Modules
The Honeywell 8C-PAIMA1, also cataloged as the 8C-PAIMA1 Low Level Analog Input Module, operates as a dedicated hardware component for direct temperature transmitter and millivolt signal acquisition within Experion Series C C300 controller systems. It accepts millivolt-level field inputs directly from Resistance Temperature Detectors (RTD) and Thermocouples (TC), conditioning and digitizing low-level primary signals onto the Experion Series C I/O backplane bus.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 8C-PAIMA1 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 3 kg (Shipping Weight) |
| Dimensions | Standard Series C I/O module form factor |
| Operating Temp | -20 to +60 deg C |
| Power Consumption | Powered via I/O Termination Assembly (IOTA) backplane |
| Input Types | RTD (Pt100, Cu10, Ni120) and Thermocouple (J, K, T, E, R, S, B, N) / mV |
| Signal Resolution | 16-bit analog-to-digital conversion |
| Channel Isolation | Galvanic isolation between field wiring and internal logic |
Cold Junction Compensation & Channel-to-Channel Isolation
The 8C-PAIMA1 incorporates high-accuracy Cold Junction Compensation (CJC) algorithms paired with onboard isothermal block sensors on the I/O Termination Assembly (IOTA) to eliminate thermoelectric thermal drift during thermocouple signal conversion. High-density channel-to-channel isolation prevents stray ground currents and common-mode voltage offsets from corrupting low-level millivolt measurements. When integrated alongside standard 4-20 mA HART loop protocol modules on shared C300 I/O racks, the isolated analog front-end prevents electrical crosstalk across signal conditioning channels.
Frequently Asked Questions
Q: Does the 8C-PAIMA1 support hot-swapping while the Experion Series C node is energized?
A: Yes, the 8C-PAIMA1 module supports live insertion and removal (hot-swapping) directly on the active Series C IOTA carrier without interrupting adjacent module operation or disrupting backplane bus communication.
Q: How does the module compensate for lead wire resistance on RTD temperature sensors?
A: The module supports 3-wire and 4-wire RTD wiring configurations, using constant current excitation and internal ratiometric voltage sensing to automatically cancel lead resistance errors up to specified line limits.
Field Installation Guidelines
- IOTA Mounting & Enclosure Environment: Mount the module on its designated Series C IOTA block secured to standard DIN rails inside IP54 or NEMA 12 rated control enclosures. Maintain a minimum vertical clearance of 50 mm above and below the assembly to allow unimpeded natural thermal convection.
- Low-Level Signal Shielding: Wire thermocouples and RTDs using twisted, shielded instrumentation pairs. Connect cable drain shields to the dedicated panel ground bar at a single point to preserve galvanic isolation barriers and suppress common-mode EMI noise.
- Terminal Wiring Engagement: Strip conductor ends to 7 mm and insert them into the screw terminals of the IOTA base. Torque terminal screws to 0.5 Nm to maintain stable electrical contact without applying excessive mechanical strain to internal terminal PCB traces.
Honeywell 8C-PAIMA1 Analog Input Modules
Honeywell 8C-PAIMA1 Analog Input Modules
The Honeywell 8C-PAIMA1, also cataloged as the 8C-PAIMA1 Low Level Analog Input Module, operates as a dedicated hardware component for direct temperature transmitter and millivolt signal acquisition within Experion Series C C300 controller systems. It accepts millivolt-level field inputs directly from Resistance Temperature Detectors (RTD) and Thermocouples (TC), conditioning and digitizing low-level primary signals onto the Experion Series C I/O backplane bus.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 8C-PAIMA1 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 3 kg (Shipping Weight) |
| Dimensions | Standard Series C I/O module form factor |
| Operating Temp | -20 to +60 deg C |
| Power Consumption | Powered via I/O Termination Assembly (IOTA) backplane |
| Input Types | RTD (Pt100, Cu10, Ni120) and Thermocouple (J, K, T, E, R, S, B, N) / mV |
| Signal Resolution | 16-bit analog-to-digital conversion |
| Channel Isolation | Galvanic isolation between field wiring and internal logic |
Cold Junction Compensation & Channel-to-Channel Isolation
The 8C-PAIMA1 incorporates high-accuracy Cold Junction Compensation (CJC) algorithms paired with onboard isothermal block sensors on the I/O Termination Assembly (IOTA) to eliminate thermoelectric thermal drift during thermocouple signal conversion. High-density channel-to-channel isolation prevents stray ground currents and common-mode voltage offsets from corrupting low-level millivolt measurements. When integrated alongside standard 4-20 mA HART loop protocol modules on shared C300 I/O racks, the isolated analog front-end prevents electrical crosstalk across signal conditioning channels.
Frequently Asked Questions
Q: Does the 8C-PAIMA1 support hot-swapping while the Experion Series C node is energized?
A: Yes, the 8C-PAIMA1 module supports live insertion and removal (hot-swapping) directly on the active Series C IOTA carrier without interrupting adjacent module operation or disrupting backplane bus communication.
Q: How does the module compensate for lead wire resistance on RTD temperature sensors?
A: The module supports 3-wire and 4-wire RTD wiring configurations, using constant current excitation and internal ratiometric voltage sensing to automatically cancel lead resistance errors up to specified line limits.
Field Installation Guidelines
- IOTA Mounting & Enclosure Environment: Mount the module on its designated Series C IOTA block secured to standard DIN rails inside IP54 or NEMA 12 rated control enclosures. Maintain a minimum vertical clearance of 50 mm above and below the assembly to allow unimpeded natural thermal convection.
- Low-Level Signal Shielding: Wire thermocouples and RTDs using twisted, shielded instrumentation pairs. Connect cable drain shields to the dedicated panel ground bar at a single point to preserve galvanic isolation barriers and suppress common-mode EMI noise.
- Terminal Wiring Engagement: Strip conductor ends to 7 mm and insert them into the screw terminals of the IOTA base. Torque terminal screws to 0.5 Nm to maintain stable electrical contact without applying excessive mechanical strain to internal terminal PCB traces.
