Trane TR150 Programming Manual page 88

Parameters
No-flow detection
This function is used for detecting a no-flow situation in pump systems where all valves can be closed. Can be used both
when controlled by the integrated PI controller in the frequency converter or an external PI controller. Program the actual
configuration in parameter 1-00 Configuration Mode.
Configuration mode for
•
Integrated PI controller: Closed loop.
•
External PI controller: Open loop.
NOTICE
Carry out no-flow tuning before setting the PI controller parameters.
Table 3.11 No-flow Detection
No-flow detection is based on the measurement of speed and power. For a certain speed, the frequency converter calculates
the power at no-flow.
This coherence is based on the adjustment of 2 sets of speed and associated power at no-flow. Monitoring power enables
detection of no-flow conditions in systems with fluctuating suction pressure, or of the pump having a flat characteristic
towards low speed.
22-23 No-Flow Function
Option:
[0] Off
*
[1] Sleep Mode
[2] Warning
[3] Alarm
22-24 No-Flow Delay
Range:
10 s [1 - 600 s]
*
BAS-SVP16B-EN
Programming Guide
3.15.3 22-3* No-flow Power Tuning
Function:
Tuning sequence:
Function:
02/2017 All rights reserved.
1. To stop flow, close the main valve.
2. Run with motor until the system has reached
normal operating temperature.
3. Press [Hand On] key on the LCP and adjust speed
for approximately 85% of the rated speed. Note
the exact speed.
4. Read power consumption either by looking for
actual power in the data line in the LCP or call
parameter 16-10 Power [kW] in the Main Menu.
Note the power readout.
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