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Product Describe:
Fail-safe 16-channel 24 Vdc digital input module for FSC. The input stage de-energizes to the safe processor state and is covered by system self-tests.
Honeywell 10101/2/1 is a 16-channel fail-safe 24 Vdc digital input module for FSC safety applications.
Acquires sixteen 24 Vdc safety-related field states.
Drives a de-energized processor input when the input stage fails.
Self-tests logic-zero, logic-one and input crosstalk response.
Supports documented non-redundant and redundant FSC wiring.
Direct use of the external 24 Vdc output pins without an FTA requires the manufacturer-specified 500 mA fuse. Preserve internal and external supply assignments.
Important Notice: Verify the complete 10101/2/1 identity, installed system position, connections and controlled functional result before release.
The first document records verified technical evidence. The second organizes controlled preparation, installation, commissioning and handover.
Emergency shutdown inputs
Acquires sixteen 24 Vdc safety-related field states.
Burner interlock contacts
Drives a de-energized processor input when the input stage fails.
Fire and gas trip inputs
Self-tests logic-zero, logic-one and input crosstalk response.
Fail-safe permissive monitoring
Supports documented non-redundant and redundant FSC wiring.
Honeywell 10101/2/1 installation checks must preserve the exact identity, system assignment and witnessed acceptance record.
1
Confirm the complete 10101/2/1 identity and 16-channel map.
2
Record internal and external 24 Vdc supply assignments.
3
Place the safety function in its approved maintenance state.
4
Use the documented 500 mA fuse when external output pins are used without an FTA.
5
Preserve input polarity, return and FTA terminal identity.
6
Check every channel against the documented HIGH and LOW thresholds.
7
Review module self-test and system diagnostics after energization.
8
Retain the witnessed safety-function acceptance record.
Technical notes
Direct use of the external 24 Vdc output pins without an FTA requires the manufacturer-specified 500 mA fuse. Preserve internal and external supply assignments.