5.8.12 PRT-60 Pipe Break Detection
This function detects Pipe Breaks during PID operation. The fault or a warning signal will occur if
the feedback does not reach the level set by users during the operation with the maximum output
(PID maximum output or the maximum speed set).
Pipe Break Detection
setting
Pipe Break Detection
variation
Pipe Break Detection
time
Pipe Break Detection Details
Select the operation when detecting Pipe Breaks.
The inverter displays a warning message.
The inverter free-runs, then stops.
The inverter decelerates, then stops.
Sets the Pipe Break Detection level. Set the detect level by multiplying the set
value for PRT-61 by PID Reference.
Sets the detect delay time. Pipe Break operates if the Pipe Break situation is
maintained for a set amount of time.
An output relay or Q1 can be set to ’28 (Pipe Broken)’. When a Pipe Break
occurs, the Relay is activated.
In the graph above, Pipe Break detection occurs if the feedback is smaller than the value
calculated by multiplying the two values set at PID-04 and PRT-61 (PID-04 x PRT-61) at the
inverter’s maximum output (when PID output is the maximum set value, or the inverter is running
at the frequency set at MOT-02).