CC-PAOH51 51410070-276 | Honeywell | HART Analog Output Module

The Honeywell CC-PAOH51 51410070-276, also cataloged as the CC-PAOH51 HART Analog Output Module, operates as a dedicated hardware component for 4-20 mA current loop control and digital HART data transmission within Honeywell Experion Series C I/O systems. It converts digital controller commands into precision analog control signals to drive final control elements, positioners, and actuators.

Hardware Specifications

4-20 mA HART Loop Protocol Integration

The Honeywell CC-PAOH51 module incorporates an integrated HART modem per channel to enable bi-directional FSK (Frequency Shift Keying) digital signal superimposition over the standard 4-20 mA analog output current loop. This architecture allows simultaneous transmission of primary analog control values while passing HART configuration, calibration, and valve positioner diagnostic status directly to the Experion control environment. Channel circuitry includes 2500 V isolation barriers between output loops and power supply commons, mitigating ground loop interference and maintaining signal linearity across variable field load impedances.

Frequently Asked Questions

Q: Does the CC-PAOH51 module require external HART multiplexers to communicate with field positioners?

A: No. The CC-PAOH51 features integrated onboard HART modems that allow the Experion DCS to communicate directly with smart field devices over the existing 4-20 mA wiring.

Q: Can the CC-PAOH51 module be hot-swapped while the Series C IOTA board is under power?

A: Yes. The module supports live insertion and removal (hot-swapping) on an energized IOTA board without disrupting adjacent active I/O channels or backplane traffic.

Q: What happens to the analog current output if backplane communication with the controller fails?

A: The module enters a predefined fail-safe execution state, driving the 4-20 mA current outputs to user-configured hold-last-value or low/high fault limits.

Field Installation Guidelines

1. Verify that the target card position on the I/O Termination Assembly (IOTA) is clean and free from pin obstruction.
2. Align the rear connector pins of the CC-PAOH51 module with the matching header on the Series C IOTA board.
3. Push the module securely into place until the retention mechanism latches completely to withstand industrial vibration.
4. Terminate field wiring leads for the 4-20 mA loop on the IOTA terminal strip using proper crimp ferrules, ensuring correct polarity.
5. Ground the cable shield drain wire at a single point on the designated enclosure ground bar to prevent circulating ground currents from degrading HART communication signals.