Description
Honeywell 8C-PAONA1
Technical Specifications
- Channel count: 8 analog output channels
- Signal type: 4–20 mA DC
- Resolution: 12-bit DAC
- Isolation: Non-isolated field side, 500 VAC backplane isolation
- Maximum loop load: 600 Ω
- Backplane interface: C300 I/O subrack bus
- Operating temperature: 0 °C to +60 °C
- Hot swap support: Online card replacement
Functional Features Economical non-isolated design, reduces system cost for general purpose loops. Per-channel short circuit protection. Configurable fail-safe output value on controller stop. Digital output filter smooths control signals. On-board LEDs indicate card power and fault status. Software-configurable output range scaling.
Application Scenarios General purpose control valve drive loops in low-noise environments Non-critical process modulation applications Cost-optimized C300 system I/O configurations Spare part replacement for non-isolated analog output card faults
Performance Parameters
- Output accuracy: ±0.2% full scale
- Update rate: 10 ms per channel
- Short circuit current limit: 30 mA
- Common mode rejection ratio: ≥70 dB
- Mean time between failures: 500,000 hours
Material Composition FR4 PCB substrate 12-bit DAC chip Output operational amplifier array TVS protection diodes Gold-plated backplane edge fingers Flame retardant plastic front panel
Structural Features Standard C300 I/O card form factor. Front detachable terminal block for 8 channel wiring. Simplified circuit layout, fewer components than isolated variants. Front status LEDs for card run and fault.
Working Principle Controller setpoint values travel over the subrack bus to the card. Each channel routes values to the 12-bit DAC, converting digital commands to analog current signals that drive connected field actuators. Short circuit protection limits output current on overcurrent events. On controller stop, outputs revert to the pre-configured fail-safe value.
Installation Requirements Insert the card into a dedicated non-isolated analog output slot. Wire field actuators to labeled terminals. Configure output scaling and fail-safe values in Control Builder. Verify output operation during commissioning.
Usage Notes Do not use non-isolated cards in high-common-mode-voltage environments, ground loop interference causes output drift. Loop load must not exceed 600 Ω. Never use this card for surge-prone outdoor field loops; use isolated variants for exposed installations. Short circuit faults require field wiring inspection before resetting channel alarms.
