Overview
Configured for safe analog signal acquisition in Honeywell Safety Manager systems, the Honeywell FC-SAI-1620M (SAI-1620M Safe Analog Input Module) provides 16 analog input channels for 24 VDC field signal processing.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-SAI-1620M |
| Base Model | SAI-1620M |
| Brand | Honeywell |
| Product Type | Safe Analog Input Module / HDAI |
| System | Honeywell Safety Manager |
| Number of Input Channels | 16 |
| Input Signal Range | 0 to 25 mA |
| Typical Signal Configuration | 0-20 mA / 4-20 mA |
| Operating Voltage | 24 VDC |
| Input Resistance | 250 ohm +/- 1% |
| Output Voltage | 0 to 4 VDC |
| Output Resistance | 270 ohm +/- 5% |
| Channel Grouping | 2 groups of 8 channels with common 0 V |
| Safety Integrity | Supports safety applications up to SIL 3 loops, subject to system configuration |
| Mounting | Card mount; housing/rack installation according to Safety Manager configuration |
Process Signal Interface and Isolation
The FC-SAI-1620M processes analog current signals from field devices through its 16 input channels. The specified input range extends from 0 to 25 mA, while 0-20 mA and 4-20 mA configurations represent typical process signal ranges.
The module uses a 250 ohm input resistance with a tolerance of +/- 1%. Its specified output voltage range is 0 to 4 VDC, with an output resistance of 270 ohm +/- 5%. Channel grouping divides the inputs into two groups of eight with a common 0 V reference.
For safety-system installation, field wiring should maintain appropriate separation from high-voltage conductors and other noise-generating circuits. Shield termination and grounding should follow the Honeywell Safety Manager installation requirements for the associated rack and field termination hardware.
Frequently Asked Questions
Q: How many analog input channels does the FC-SAI-1620M provide?
A: The module provides 16 analog input channels arranged as two groups of eight channels with a common 0 V reference.
Q: What current signal range does the FC-SAI-1620M accept?
A: The specified input range is 0 to 25 mA. The supplied data identifies 0-20 mA and 4-20 mA as typical configurations.
Q: Does the module require a 24 VDC supply?
A: Yes. The supplied specifications identify 24 VDC as the operating voltage.
Field Installation Guidelines
- Install the module in the designated Honeywell Safety Manager card or rack assembly.
- Verify that the system configuration supports the FC-SAI-1620M before energizing the module.
- Confirm field signal polarity and terminal assignments against the applicable Honeywell wiring documentation.
- Keep analog signal wiring separated from high-voltage and high-current conductors.
- Route signal cables to minimize exposure to electromagnetic interference.
- Terminate cable shields according to the system grounding design and Honeywell installation requirements.
- Verify the 24 VDC supply before connecting field circuits.
- Check the common 0 V arrangement for each eight-channel input group before commissioning.
- Confirm each field loop remains within the specified 0 to 25 mA input range.
- Perform loop verification and channel diagnostics before placing the safety function into service.
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