Overview
Configured for galvanically isolated 4-20 mA signal interfacing in Honeywell process control systems, the Honeywell MC-GAIH13 51304718-175 (MC-GAIH13 HLAI/STI galvanic isolator module) provides direct physical and electrical signal isolation across 16 channels. The module uses compression terminals, supports redundant installation arrangements, and provides isolated 4-20 mA input and output signal paths.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MC-GAIH13 51304718-175 |
| Base Model | MC-GAIH13 |
| Product Type | HLAI/STI Galvanic Isolator Module |
| Brand | Honeywell |
| Manufacturer | Honeywell |
| Origin | USA |
| Product Parameters | HLAI/STI Galvanic Isolator Module |
| Channels | 16 |
| Signal Type | 4-20 mA |
| Output Signal | 4-20 mA |
| Galvanic Isolation | 1500 V AC |
| Channel-to-Channel Isolation | 300 V AC |
| Redundancy | Supported |
| Terminal Type | Compression terminals |
| Size B | 12 inches (307 mm) |
| Compliance | CE compliant |
| Coating | Conformally coated |
| Operating Temp | -40 deg C to +85 deg C (-40 deg F to +185 deg F) |
| Humidity | 0-95% non-condensing |
| Weight | 0.3 kg |
| Dimensions | 15.2 x 12 x 8.2 cm estimated shipping size |
4-20 mA Signal Isolation and Channel Separation
The MC-GAIH13 51304718-175 handles 4-20 mA process signals through galvanically isolated circuits. The specified 1500 V AC galvanic isolation separates connected electrical domains, while 300 V AC channel-to-channel isolation limits electrical interaction between adjacent channels.
In addition, the 16-channel configuration concentrates multiple analog signal paths within one field termination assembly. The compression terminals provide direct field wiring termination. Therefore, installers should maintain separation between signal wiring and higher-energy conductors to preserve the specified isolation arrangement.
The conformal coating provides additional protection for circuit surfaces in industrial environments. However, field installation must still maintain the specified temperature and non-condensing humidity limits.
Frequently Asked Questions
Q: What signal range does the MC-GAIH13 51304718-175 support?
A: The supplied specification identifies 4-20 mA as both the input signal type and output signal range.
Q: Does the MC-GAIH13 51304718-175 provide electrical isolation between channels?
A: Yes. The supplied data specifies 1500 V AC galvanic isolation and 300 V AC channel-to-channel isolation.
Q: Is the module suitable for redundant configurations?
A: The supplied specification identifies redundancy support. The exact redundancy architecture and changeover behavior depend on the associated Honeywell system configuration and are not specified in the provided data.
Field Installation Guidelines
- Verify that the installed hardware identification matches MC-GAIH13 51304718-175 before applying field wiring.
- Isolate system power before connecting or disconnecting compression terminals unless the associated system documentation explicitly permits energized maintenance.
- Route 4-20 mA signal wiring separately from high-voltage power and switching conductors.
- Terminate cable shields according to the grounding arrangement specified for the associated Honeywell control system.
- Maintain correct channel identification during field wiring because the assembly supports 16 signal channels.
- Do not exceed the specified environmental range of -40 deg C to +85 deg C and 0-95% non-condensing humidity.
- Inspect terminal compression and conductor retention before energizing the connected signal loops.
- Confirm that redundant connections follow the applicable Honeywell system wiring documentation before commissioning.
- Do not assume hot-swap capability, power consumption, switching delay, or firmware compatibility when these parameters are not explicitly specified for this module.
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