Overview
The Honeywell 10106/2/1 is a 16-channel fail-safe digital input module designed to detect discrete field signals using the DIN 19234 (NAMUR) interface. It monitors input current levels, with a switching threshold of 1.4 to 1.9 mA and a hysteresis of 0.2 mA +/- 0.05 mA. The module operates with 5 VDC and 24 VDC power supplies and requires software version 510 or later.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 10106/2/1 |
| Brand | Honeywell |
| Module Type | Fail-Safe Digital Input Module |
| Origin | USA |
| Weight | 0.12 kg |
| Dimensions | 2 x 18.8 x 12.7 cm |
| Power Consumption | 5 VDC at 160 mA; 24 VDC at 110 mA |
| Number of Input Channels | 16 |
| Input Type | DIN 19234 (NAMUR) |
| Rated Input Voltage | 24 VDC |
| Switching Threshold | 1.4 to 1.9 mA |
| Input Hysteresis | 0.2 mA +/- 0.05 mA |
| Maximum Field Wire Resistance | 50 Ohm |
| Output Voltage | 7.9 to 8.7 V |
| Output Current | 170 mA (as specified; operating conditions not provided) |
| Space Requirements | 4 TE, 3 HE (4 HP, 3U) |
| Safety Class | AK1-6 |
| Minimum Software Version | 510 |
| Approvals | CE, UL, TUV, FM |
NAMUR Input Signal Processing and Fail-Safe Operation
The 10106/2/1 accepts discrete signals through a DIN 19234 (NAMUR) input interface. The input switching threshold of 1.4 to 1.9 mA defines the specified current range for state discrimination. The hysteresis of 0.2 mA +/- 0.05 mA provides a difference between switching thresholds to reduce repeated state changes near the switching point.
The maximum permitted field wire resistance is 50 Ohm. The specified output voltage is 7.9 to 8.7 V, with an output current rating listed as 170 mA. The exact fault response, channel isolation arrangement, and safety integrity level are not established by the supplied specifications and require confirmation from the applicable hardware manual.
Frequently Asked Questions (FAQ)
Q: How many digital input channels does the 10106/2/1 support?
A: The module supports 16 digital input channels using the DIN 19234 (NAMUR) interface.
Q: What power supplies does the module require?
A: The specified power requirements are 5 VDC at 160 mA and 24 VDC at 110 mA.
Q: Which software version is specified for this module?
A: The supplied specifications list software version 510 or later. Confirm system compatibility before replacing or installing the module.
Field Installation Guidelines
- Module placement: Verify the assigned rack position and confirm the available space supports the specified 4 TE and 3 HE dimensions.
- Power supply: Check the 5 VDC and 24 VDC supply rails against the module’s specified current requirements before energizing the system.
- Field wiring: Confirm that the field circuit uses the DIN 19234 (NAMUR) interface and that total field wire resistance does not exceed 50 Ohm.
- Signal verification: Test the input switching response against the specified 1.4 to 1.9 mA threshold and 0.2 mA +/- 0.05 mA hysteresis.
- Grounding and shielding: Follow the system installation manual for cable shielding, grounding, and segregation of signal wiring from power conductors.
- Fail-safe validation: Verify input fault detection and safe-state behavior against the approved system safety documentation. Do not infer SIL capability from the fail-safe designation alone.
- Replacement checks: Confirm hardware revision, software compatibility, terminal assignments, and rack configuration before commissioning.
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