External alarm 1

What does A07850 mean?

An external condition has triggered "External alarm 1," typically via binector input p2112. This alarm indicates an external issue that requires attention but does not immediately stop the drive. Ignoring this alarm risks escalation of the external problem, potentially causing a subsequent fault, damage, or process disruption if the root cause remains unaddressed.

• External sensor (e.g., temperature switch, pressure switch, level sensor) connected to a digital input (e.g., P2112) has changed state.
• Auxiliary equipment (e.g., hydraulic pump, fan motor, cooling unit) connected to the machine has reported a minor issue.
• Loose or corroded wiring connection to the configured digital input, causing intermittent signal detection.
• Configuration error in parameter P2112 or associated parameters, leading to incorrect interpretation of the external signal.

Click steps to track your progress.

1. 1

   Identify the specific digital input (e.g., P2112) configured to trigger 'External Alarm 1' and the associated external sensor.

2. 2

   Inspect the external sensor's wiring for loose connections, damage, or proper shielding from EMI.

3. 3

   Verify the operational status of the external equipment or condition that the sensor is monitoring (e.g., check oil level, motor temperature, pressure gauge).

4. 4

   Test the digital input's state by manually actuating the associated sensor or shorting the input to common (if safe) to observe the drive's response (r0722).