The Honeywell 10101/2/3 is a high-reliability, fail-safe digital input module engineered for safety instrumented systems (SIS). It provides 16 digital input channels designed to operate at a nominal 48 VDC. The module features a fail-to-safe architecture, ensuring that in the event of an internal fault, all inputs transition to a de-energized state to maintain a defined safe condition. It is widely utilized in critical process control environments, including oil and gas facilities and power generation plants, where high availability and safety integrity are mandatory.
This module is designed for safety-critical applications requiring SIL-rated performance, including emergency shutdown systems (ESD), fire and gas monitoring, and critical process interlocks in industrial automation.
| Model | 10101/2/3 |
| Channels | 16 Digital Inputs |
| Rated Input Voltage | 48 VDC |
| Maximum Input Voltage | 70 VDC |
| Input Current | 4 mA at 48 VDC |
| Logic HIGH Level | > 30 VDC |
| Logic LOW Level | < 16 VDC (< 1.1 mA) |
| Input Delay | 10 ms (typical) |
| Power Consumption (5 VDC) | 8 mA |
| Power Consumption (24 VDC) | 80 mA |
| Power Consumption (48 VDC) | 65 mA |
| Operating Temperature | 0 to 60 deg C |
The 10101/2/3 is a digital input module used in safety-critical systems to monitor 48 VDC signals while providing continuous diagnostic coverage and fail-safe operation.
The module is designed to fail-to-safe, meaning all inputs are forced into a de-energized state to ensure the process remains in a safe condition.
Yes, the module requires a common 0 VDC reference between the internal 24 VDC logic supply and the external 48 VDC field supply for stable operation.
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