
4.6 U1000 iQpump Presets and Functions............................................................................104
Pump Down Level Control Application Preset................................................................................. 104
Suction Control via Constant Pressure w/Well Draw Down ............................................................ 106
General Purpose Mode Application Preset ..................................................................................... 107
Well Draw Down Control Application Preset ................................................................................... 109
Low City or Low Suction Inlet Pressure........................................................................................... 112
Water Level / Suction Pressure Control .......................................................................................... 114
Delta Data Entry .............................................................................................................................. 114
Current Limit.................................................................................................................................... 115
Vertical Turbine Controller (VTC) .................................................................................................... 116
Pre-Charge Function with One Lag Pump ...................................................................................... 119
Setpoint Boost after Lag Pump De-staging ..................................................................................... 122
Frequency Reduction after Lag Pump Staging ............................................................................... 123
Using the DO-A3 Option for Additional Lag Pumps ........................................................................ 124
De-Scale/De-Ragging ..................................................................................................................... 125
Flow Rate Limiter ............................................................................................................................ 127
Multi-function Digital Input On/Off Time Delay ................................................................................ 132
PI Auxiliary Control.......................................................................................................................... 132
Hybrid Sequence Control ................................................................................................................ 137
Differential Level Detection ............................................................................................................. 138
4.7 Basic U1000 iQpump Setup and Application Preset Parameters .................................139
4.8 Test Run with No Load......................................................................................................175
No-Load Operation Test Run .......................................................................................................... 175
4.9 Test Run with Load Connected........................................................................................176
Test Run with the Load Connected ................................................................................................. 176
5. TROUBLESHOOTING.......................................................................................... 177
5.1 Motor Performance Fine-Tuning......................................................................................178
Fine-Tuning V/f Control ................................................................................................................... 178
Fine-Tuning Open Loop Vector Control .......................................................................................... 178
5.2 Drive Alarms, Faults, Errors, and Messages ..................................................................180
Types of Alarms, Faults, and Errors................................................................................................ 180
5.3 Fault Detection ..................................................................................................................181
Fault Displays, Causes, and Possible Solutions ............................................................................. 181
5.4 Alarm Detection.................................................................................................................198
Alarm Codes, Causes, and Possible Solutions ............................................................................... 198
5.5 Operator Programming Errors .........................................................................................212
Operator Programming Error Codes, Causes, and Possible Solutions........................................... 212
5.6 Auto-Tuning Fault Detection ............................................................................................216
Auto-Tuning Codes, Causes, and Possible Solutions..................................................................... 216
5.7 Copy Function Related Displays .....................................................................................219
Tasks, Errors, and Troubleshooting ................................................................................................ 219
5.8 HOA Keypad Display Messages ......................................................................................221
Fault Reset Methods ....................................................................................................................... 222
5.9 Auto-Tuning .......................................................................................................................223
Types of Auto-Tuning ...................................................................................................................... 223
Auto-Tuning Interruption and Fault Codes ...................................................................................... 224
Auto-Tuning Operation Example ..................................................................................................... 224
Table of Contents
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual 5