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General| Brand | Yale |
|---|---|
| Model | 781N |
| Category | Controller |
| Language | English |
Installation compliance for C-UL Listed applications and certified transformer models.
Securely fastening the 781N enclosure and positioning it correctly.
Connecting 120VAC power input, wire gauge, and grounding requirements.
Chart for wire gauge, max cable length, and connection for exit devices.
Two methods: single system (sequential) or dual system (independent control).
Adjusting latch pullback delay using pots R2/R4 for different switch types.
Explanation of the pulse module, coils, and sensor in exit devices.
Using the 781N outputs to control automatic door operators.
Wiring to fire alarm contacts and enabling interface via jumper PJ2.
Two power-limited outputs, voltage ranges, isolation, and voltage compatibility caution.
Check for binding latches and understand output behavior during faults.
Common causes for devices failing to pull back, including wiring and component issues.
Causes for devices pulling back immediately upon power application, like wiring shorts.
Reasons for a buzzing sound from the exit device, such as binding latches or module issues.
Further troubleshooting for no pulse, immediate pullback, and buzzing sounds.
Unit's UL294 listing and the fail-secure design of the power output.
