YASKAWA iQpump Micro CIMR-PW Series User Manual page 233

No.
P4-11
While this parameter is active, the drive will display the message "Thrust Mode – Thrust Active" on the keypad and the digital
output associated with thrust mode (H2-0o = A9) will close. For output frequencies above P4-12, the drive standard
acceleration rates will apply and the message and digital output will clear. When this parameter is set to 0.0, the drive will use
the standard acceleration rate.
P4-12: Thrust Bearing Frequency
n
Sets the frequency used by the drive when determining which acceleration and deceleration time to use. The Thrust Bearing
function is used for applications using submersible motors. The function provides an alternate acceleration time (P4-11) and
deceleration time (P4-13) for protecting the pump bearings.
At start, the drive will use the P4-11 acceleration time until the P4-12 frequency is reached, at which time it will use the active
C1-oo acceleration and deceleration times. At stop, if the output frequency is above the P4-12 setting, the active C1-oo
deceleration time will be used until the P4-12 setting is reached at which time it will use the P4-13 time setting for the rest of
deceleration.
If P4-12 is set greater than P1-06 (minimum Pump Speed), P4-12 will become the frequency lower limit. The drive PID control
must be disabled (b5-01 = 0) for this function to work.
No.
P4-12
P4-13: Thrust Bearing Deceleration Time
n
Specifies the amount of time that the drive will decelerate from the value set in P4-12 until reaching 0.
No.
P4-13
While this parameter is active, the drive will display the message "Thrust Mode – Thrust Active" on the keypad and the digital
output associated with thrust mode (H2-0o = A9) will close. For output frequencies above P4-12, the drive standard
deceleration rates apply and the message and digital output will clear. When this parameter is set to 0.0, the drive will use the
standard deceleration rate.
P4-17: Utility Start Delay
n
Sets the delay time after power up until the drive will recognize a Run command present within one second of power up or
when the Run command is jumpered on the terminal strip.
This is useful in preventing a peak power surge when multiple drives power up and begin accelerating simultaneously. This
function works when the drives all have different P4-17 settings to spread out the power draw during acceleration.
If the Run command is removed and re-applied during the P4-17 time, the drive will cancel the utility start delay and
immediately begin running.
The Utility Start Delay is applied when the drive is auto-restarting after an Undervoltage (Uv) or an Overvoltage (ov) condition.
No.
P4-17
P4-21: Low City Input Select
n
Selects the type of pressure switch connected to the "Low City Press" digital input (H1-0o = 73).
No.
P4-21
Setting 0: Normally open
Setting 1: Normally closed
P4-22: Low City On-Delay Time
n
Sets the amount of time a "Low City Pressure" condition must be present before the drive will stop.
No.
P4-22
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Name
Thrust Bearing Acceleration Time
Parameter Name
Thrust Bearing Frequency
Name
Thrust Bearing Deceleration Time
Parameter Name
Utility Start Delay
Name
Low City Input Select
Name
Low City Input On-Delay Time
5.11 P: Pump
Setting Range
0.0 to 600.0 s
Setting Range
0.0 to E1-04
Setting Range
0.0 to 600.0 s
Setting Range
0.0 to 1000.0 min
Setting Range
0, 1
Setting Range
1 to 1000 s
Default
1.0 s
Default
30.0 Hz
Default
5.0 s
Default
0.2 min
5
Default
1
Default
10 s
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