Description
Product Overview
The Honeywell 05701-A-0145 is a 4-channel isolated analog input / control card belonging to the Honeywell System 57 DCS platform. It acquires 4–20mA field process signals, supplies loop power to transmitters, and performs closed-loop control for critical plant parameters. Widely deployed in petrochemical, power generation and oil & gas facilities, this legacy control card is commonly used for plant maintenance, spare part replacement and system retrofit of existing System 57 installations.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | 05701-A-0145 |
| Brand | Honeywell |
| Type | Four-Channel Control Card |
| Compatible System | Honeywell System 57 DCS |
| Input Signal | 4–20mA, 0–25mA full range |
| Loop Supply | Isolated 24V DC ±5%, max 25mA per channel |
| Typical Power Consumption | 7.5W |
| Max Power Consumption | 8.3W |
| Circuit Protection | Short-circuit & open-circuit protection, withstand up to ±50V |
| Max Line Resistance | 500Ω including field sensor |
| Operating Temperature | -20°C ~ +60°C |
| Storage Temperature | -25°C ~ +70°C |
| Humidity | 5~95% RH, non-condensing |
| Certifications | CE, UL |
Key Features
- Four independent control channels for 4-20mA process transmitters
- Built-in isolated 24V loop power supply for field instruments
- Per-channel wiring fault detection: open circuit and short circuit alarm
- Onboard signal filtering to reduce electrical noise interference
- Front panel LED indicators for channel status and module health
- Rugged rack-mount design for continuous 24/7 process operation
- Galvanic isolation between field wiring and system backplane
Installation & Testing Notes
- Install the card into the designated rack slot of Honeywell System 57 chassis
- Verify field wiring resistance and check for short circuits before applying power
- Complete hardware self-test after power on; confirm front panel LED status
- Perform loop calibration with 4–20mA signal source to validate input accuracy
- For replacement, power down the rack slot; this module does NOT support hot swap
- After replacement, download control configuration and run full loop test with field transmitters
FAQ
Q: Which DCS system does 05701-A-0145 belong to? A: Honeywell System 57 legacy DCS control system.
Q: Does it provide loop power for 4-20mA transmitters? A: Yes, it supplies isolated 24V DC loop power for each channel.
Q: Is hot swap available for this card? A: No, slot power must be isolated before removal or replacement.
Q: How many channels on this control card? A: 4 channels.
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