Overview
The Honeywell FC-IOCHAS-0001S, also cataloged as the IOCHAS-0001S I/O chassis, operates as a dedicated hardware component for housing non-redundant I/O modules within distributed control system architectures. It provides mechanical mounting and electrical backplane routing for up to 18 active interface modules while maintaining a regulated 24 VDC input voltage rail and slot-to-slot isolation barriers.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-IOCHAS-0001S (Spare: IOCHAS-0001S) |
| Brand | Honeywell |
| Product Type | I/O Chassis for non-redundant I/O modules |
| Country of Origin | USA |
| Weight | 8.36 kg |
| Dimensions | 48.3 x 29.5 x 23.5 cm |
| Input Voltage | 24 VDC |
| Power Consumption | 25 W (base) |
| Isolation | 1000 VAC |
| Operating Temperature | -20 deg C to +60 deg C |
| Storage Temperature | -40 deg C to +85 deg C |
| Approvals | CE, UL, CSA, TUV, FM |
Channel-to-Channel Isolation and Loop Interface
The chassis engineering integrates rigid slot-to-slot electrical isolation rated at 1000 VAC, mitigating ground loop potentials across multi-module deployments. Operating from a nominal 24 VDC input rail, the backplane architecture supports channel signal conditioning paths designed for standard process instrumentation protocols, including 4-20 mA HART loops and discrete signal terminations. Backplane power distribution delivers controlled logic supply rails (such as the 5V-R 35 mA allocation referencing slot 21) to sustain module-level processing circuitry without signal degradation or cross-talk interference.
Frequently Asked Questions
Q: What is the maximum module capacity supported by the FC-IOCHAS-0001S chassis?
A: The chassis accommodates up to 18 non-redundant I/O modules in standard active slots, supported by dedicated backplane power distribution.
Q: What are the electrical isolation ratings between individual module slots?
A: The unit provides a slot-to-slot electrical isolation threshold of 1000 VAC to prevent common-mode voltage interference across instrumentation channels.
Q: Can the chassis operate outside standard ambient room temperatures?
A: Yes, the unit is rated for operational deployment within an ambient temperature range of -20 deg C to +60 deg C.
Field Installation Guidelines
- Mount the chassis securely onto a grounded industrial enclosure backplate using appropriate mechanical fasteners to withstand environmental vibration profiles.
- Ensure the 24 VDC input power source stays strictly within the 18 to 36 VDC tolerance band prior to wiring terminal connections.
- Verify proper shield grounding and cable segregation to maintain the 1000 VAC slot-to-slot isolation boundary and minimize electromagnetic interference.
- Inspect all module pin alignments carefully before insertion to avoid mechanical backplane damage.
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