Overview
The Honeywell 621-1160R is a 16-point digital input module engineered for use in Honeywell 620/621 series process control systems and distributed control architectures. Rated for 115VAC operation with DATA 3 wiring classification, this module reliably acquires digital signals from field-mounted sensors, switches, and discrete devices. The 621-1160R integrates directly into the Honeywell backplane without requiring external wiring changes, making it a cost-effective upgrade path for aging systems.
Key Features
- 16 discrete digital inputs for sensor and switch monitoring
- 115VAC signal level detection with DATA 3 classification
- Direct backplane integration into 620/621 series controllers
- Proven reliability in power generation, refining, and manufacturing applications
- Minimal footprint with standard DIN rail or panel mounting
- IEEE 518 DATA 3 signal class compliance
Technical Specifications
- Input Points: 16 digital inputs
- Input Voltage Rating: 115VAC
- Signal Classification: IEEE 518 DATA 3
- Compatible Controllers: Honeywell 620/621 Series, TDC 2000/3000
- Mounting: Plug-in module for 620/621 backplane
- Operating Temperature: -10°C to +55°C (industrial standard)
- Weight: 280 grams
- Certification: 94V-0 flame rating
Typical Applications
- Process control and monitoring in refinery operations
- Power generation and utility automation systems
- Discrete manufacturing and machine control
- HVAC and building automation logic
- Alarm and status aggregation from remote field devices
- Legacy system integration and modernization
Compatibility & Replacements
Compatible With
- Honeywell 620 Series distributed control systems
- Honeywell 621 Series logic controllers
- Honeywell TDC 2000 process control system
- Honeywell TDC 3000 process control system
- Standard 620/621 I/O backplane architecture
Replaces / Drop-In Replacement For
- Original Honeywell 621-1160R units (direct equivalent)
- Legacy 16-point 115VAC input configurations in 620/621 systems
Works With
- Honeywell 621 Series I/O module family (input and output modules)
- Honeywell Logic Manager software for programming and configuration
- Standard industrial discrete signal protocols
- Field wiring per IEEE 518 DATA 3 classification standards
