Low Suction Pressure

What does LOSUC mean?

The suction pressure has fallen below the level set in Q5-09 for longer than the time set in Q5-10. This fault is effective only when Q5-11 (Low Suction Pressure Behavior Select) is set to 2 (fault).

• System suction pressure has fallen below the configured threshold.

Click steps to track your progress.

1. 1

   Increase the system pressure.

2. 2

   Set the Low Suction fault characteristics using parameters Q5-09, Q5-10, and Q5-18.

3. 3

   Control drive response to this condition using Q5-11 (Low Suction Pressure Behavior Select).

4. 4

   Control auto-restart of this fault using Q5-11 (Low Suction Pressure Behavior Select) and Q5-15 (Suction Pressure Auto-restart Time).