Description

Honeywell FC-SDI-1624 Safe Digital Input Module

Configured for safe digital signal acquisition in Honeywell safety control platforms, the Honeywell FC-SDI-1624 (FC-SDI-1624 Safe Digital Input Module) provides direct electrical input processing for 24 VDC field signals through 16 isolated digital channels.

Hardware Specifications

Parameter	Specification
Model	FC-SDI-1624
Brand	Honeywell
Product Type	Safe Digital Input Module
Origin	USA
Weight	0.46 kg
Dimensions	43.8 x 14.2 x 9 cm shipping size
Power Consumption	Maximum current consumption: 450 mA
Input Channels	16
Input Voltage Range	Maximum 36 VDC
Nominal Input Voltage	24 VDC
Input Current	7 mA at 24 VDC
Input HIGH Threshold	> 15 VDC
Input LOW Threshold	< 9 VDC (I < 2 mA)
Input Delay	Typically 10 ms
Mounting Space	4 TE, 3 HE (= 4 HP, 3U)
Supply Ripple Content	< 0.5 Vp-p (0-360 Hz)
Tariff Code	8537101190

Channel-to-Channel Isolation and Safety Signal Processing

The Honeywell FC-SDI-1624 processes 24 VDC field switching signals through 16 digital input channels. Moreover, the module monitors input voltage levels with defined HIGH and LOW thresholds to provide deterministic state recognition.

The module architecture follows Honeywell process safety and control hardware requirements, where digital field signals require controlled electrical behavior before system logic execution. In addition, the input design supports channel-to-channel isolation concepts used in industrial safety systems to reduce interference between external field circuits.

For process instrumentation interfaces, Honeywell digital modules commonly operate with discrete field devices such as switches, contacts, and binary transmitters. Therefore, proper signal wiring, shielding practices, and grounding methods remain important during installation.

Frequently Asked Questions

Q: What field voltage does the Honeywell FC-SDI-1624 accept?
A: The module accepts digital input signals up to 36 VDC and specifies 24 VDC operation with a typical input current of 7 mA.

Q: How many digital input points are available on the FC-SDI-1624?
A: The FC-SDI-1624 provides 16 digital input channels for safe field signal acquisition.

Q: What are the input recognition thresholds of this module?
A: The module recognizes HIGH input states above 15 VDC and LOW input states below 9 VDC with input current below 2 mA.

Field Installation Guidelines

Install the FC-SDI-1624 in the specified control cabinet slot position according to the system hardware configuration. Verify that field wiring matches the assigned digital input channels before applying operating voltage.

Separate digital signal wiring from high-current power cables to reduce electrical noise coupling. Furthermore, connect cable shields according to the cabinet grounding design and site electrical standards.

Confirm terminal connections, supply polarity, and field device contact conditions before commissioning. Avoid applying voltage levels beyond the specified input range to prevent hardware damage.

Specifications

• Brand: Honeywell

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems