Yaskawa iQpump1000 AC Drive Quick Start - Manual (Page 176)

Max Geothrm Speed
(Q2-04)
Min Geothrm Speed
(Q2-03)
Low Temp
@ Max
(Q2-05)
Low Temp
@ Min
(Q2-06)
High Temp
@ Min
(Q2-07)
High Temp
@ Max
(Q2-08)
Temperature ( ºF )
Frequency
Reference (Hz)
Figure 4.8 Normal Temperature Regulation
The drive can also be programmed for inverse operation by changing the parameter settings in Q2-03 to Q2-08 as
shown in Figure 4.9 .
Max Geothrm Speed
(Q2-04)
Min Geothrm Speed
(Q2-03)
Low Temp
@ Max
(Q2-05)
Low Temp
@ Min
(Q2-06)
High Temp
@ Min
(Q2-07)
High Temp
@ Max
(Q2-08)
Temperature ( ºF )
Frequency
Reference (Hz)
Figure 4.9 Inverse Temperature Regulation
8.
Set the response to temperature feedback signal loss. The drive will monitor the feedback signal for signal loss. This
function can be disabled by setting Q2-09 to 0. When a wire break is detected (or if no analog input is programmed
for Geothermal Temp), a “TLGI - Geothermal Input” fault or “Temp Lost – Geothermal Input” alarm will be triggered
depending on the setting of Q2-09. If Q2-09 is set to 2 (fault), the drive will only fault when running in AUTO Mode. It
will only display the alarm if not running or if it is running in HAND Mode.
9.
Set the Geothermal Sleep characteristics. The drive will sleep if the drive runs at the minimum speed (Q2-03) for the
time set in Q2-10. Setting Q2-11 to 0 disables the sleep function (default setting).
10.
Set the wake up characteristics. The drive will wake from Geothermal Sleep when Geothermal Temperature (U1-80)
is greater than the “High Temp @ Min” plus the Geothermal Wake Level (Q2-07 + Q2-11) or is less than “Low Temp
@ Min” minus the Geothermal Wake Level (Q2-06 – Q2-11) for more than the Geothermal Wake Delay Time
(Q2-12).
11.
The default settings will allow the drive to automatically restart after power loss if the drive was running at the time of
power loss. Set P4-10 to 1 to disable this function.
12.
Press the AUTO key to start the drive with PI control (water depth control). Press the OFF key to stop the drive.
4.5 iQpump Presets and Functions
176 YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide