Goodrive270 series VFD for fan and pump Basic operation guidelines
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Forward/reverse
run cycles for
pump cleaning
5.5.21 Water pipe break detection
This function can detect water pipe break and stop pump motors in time to reduce the loss. This
function is implemented as follows:
You can set P96.00 to 1 to enable this function. If water pipe break occurs and the water pressure
cannot reach the setting, the VFD running frequency boosts up to the upper limit or the PID output
upper limit frequency. You can determine the situation by setting P96.01. When the condition reaches
the time specified by P96.02, the VFD stops the motor.
Related parameter list:
Action upon water
pipe break
0: Normal running
1: Stop
Detection level of
water pipe break
After water pipe break, the VFD running
frequency boosts up to the upper limit or the PID
output upper limit frequency. When it is set to 0,
the water pipe break function is invalid.
Range: 0.0–100.0%
Detection time of
water pipe break
Used to check the detection time of water pipe
break.
Range: 0.0–6000.0s
5.5.22 Water pipe soft padding
In a water supply system, the rapid influx of water into the empty water pipe can cause a water
hammer effect, which damages the water pipe or valve. After water pipe soft padding is enabled, the
VFD implements water injection into the water pipe slowly and steadily for every startup, avoiding the
water hammer effect. If the VFD stops due to a fault during water injection, the VFD still runs the
function setting after restart. This function is implemented as follows: Set P96.03 to 1 to enable soft
padding. After the VFD is started, the VFD exits from the soft padding process when the motor
reaches any of the two conditions, and the PID takes over the frequency control:
Condition 1: The VFD runs at the frequency specified by P96.04, and the run time reaches the time
specified by P96.05.
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