Yaskawa iQpump1000 AC Drive Quick Start User Manual

Page 8

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Step

No.

Value

Description

Reference

Comments

b5-03

3.0 sec.

PI Integral Time

Decrease integral time to make iQpump more responsive.

Caution: can cause instability if

value is too low.

b5-12

(Fault)

PI Feedback Ref-
erence Missing
Detection Selec-
tion

Select what to do when the feedback device (transducer) fails or gets disconnected.

0: Disabled, continue running no message is displayed

1: Alarm, show warning on the keypad when the feedback device fails or is discon-

nected

2: Fault, stop pump system when the feedback fails or is disconnected

NOTE: Disable parameter b5-12

if no transducer is installed.

C1-01

20.0 sec.

See Note

Acceleration Time
1

Time it takes to accelerate the pump motor from zero to maximum speed.
NOTE: Factory default with Thrust Mode enabled is 12.0 sec, 20.0 sec when dis-
abled.

Adjusted depending on system
performance

C1-02

10.0 sec.

See Note

Deceleration
Time 1

Time it takes to decelerate the pump motor from maximum speed to zero.

NOTE: Factory default with Thrust Mode enabled is 5.0 sec, 10.0 sec when dis-
abled.

L5-01

Number of Re-
start Attempts

Determines the number of times iQpump will perform an automatic restart on the
faults listed in the comments column.

iQpump System Protection Faults that can be setup to restart are Low Level Feed-
back,
High Level Feedback, Transducer Loss, Not Maintaining Setpoint, Loss of Prime,
Pump Over Cycle. Refer to parameters P4-07 and P4-08. The number of restart at-
tempts is set by L5-01.

Overcurrent

Ground Fault

Output Phase Loss

Input Phase Loss

iQpump Overload

Motor Overload

Overtorque

DC Bus Fuse Blown

DC Bus Undervoltage

DC Bus Overvoltage

Overheat

L5-03

20 sec.

Maximum Restart
Time After Fault

If the restart fails (or is not attempted due to a continuing fault condition) iQpump
waits the Maximum Restart Time After Fault, before attempting another restart.

P1-06

40.0 Hz

Minimum Pump
Frequency

Minimum speed (Hz) the pump motor has to operate at.

Example: Base pump motor speed is 3600 RPM, minimum speed is 2400 RPM. Set

minimum pump frequency to 40.0 Hz. (2400 ÷ 3600 x 60 Hz = 40 Hz)

P1-06 should be set to the level

where the pump can produce the

minimum pressure even at zero

flow.

P2-03

5 sec.

Sleep Delay Time

Time it takes before the pump system goes to sleep when the selected signal level

(P2-01) falls below the specified sleep level (P2-02)

Adjust according to system
requirements.

P4-12

30.0 Hz

Thrust Bearing
Frequency

Sets the frequency reference used when the thrust bearing function is active. A
value of 0 disables this function.

Primarily used for submersible
pumps. Program P4-12 = 0.0 Hz
to disable function when iQpump is
used with a centrifugal pump.

P4-17

0.2 Min

Utility Start Delay

When utility power is restored and P4-10 is enabled (1), iQpump waits the time
specified in P4-11 before auto operation becomes active.

Note: Only active when P4-10 is
enabled (1) and operation
(start/stop) is from the
digital operator.

iQpump Factory Defaults Overview

(adjust certain settings specific to the application)

P1-03 = 200.0 PSI Feedback Scaling

P1-02 Feedback Unit

0: Inch of Water

8: Bar

1: PSI

9: Pascal

2: GPM

10: Degrees Celsius

3: Degrees Fahrenheit

11: Meter

4: CFM

12: Feet

5: CMH

13: Liters per Minute

6: Liters / Hr

14: cm per Minute

7: Liters/Sec

15: Inch Hg
25: No Unit

Feedback
Maximum

SYSTEM FEEDBACK UNIT /
FEEDBACK DEVICE SCALING

START / DRAW DOWN LEVEL

Start Pump System

Start

Delay

200

PSI

Start / Draw Down Level (P1-04)
(Example 100.0 PSI)

System Setpoint
(Example 150.0 PSI)

Feedback Signal from pressure
transducer (4 – 20 mA)

Time

Pressure

Start Level Delay (P1-05)

(Example 5.0 sec.)

System Units (P1-02)
(Example PSI)

Feedback Scaling (P1-03)
(Example 200.0 PSI)

WAIT

SYSTEM STARTS WHEN

PRESSURE SIGNAL FALLS

BELOW 100 PSI

Example: Absolute Level (Positive Start Level)

Example: Delta Level (Negative Start Level)

150