Yaskawa iQpump1000 AC Drive Quick Start User Manual download pdf (Page 230)

No. Parameter Name Setting Range Default

P4-03 Pre-Charge Time 0.0 to 3600.0 min 0.0 min

The following conditions must be met to enter Pre-Charge Mode:

• Drive Ready or Sleeping (Run command, not faulted, not in program mode)

• NOT in HAND Mode

• “Disable Pre-charge” digital input NOT closed

• P4-03 > 0.0

• If P4-01, Pre-Charge Level, is greater than 0, the PID feedback must be below the P4-01 level. (Forward acting PID, b5-09

= 0, Reverse acting PID, b5-09 = 1).

When the drive enters Pre-Charge Mode 1 and 2, the drive runs at the Pre-Charge frequency set in P4-02/P4-06, the PID

controller is disabled and the Pre-Charge digital output (H2-0o = A4) closes.

When pre-charge is active, the message “Pre Chg Mode Exit in Xsec” appears on the keypad to show how long before pre-

charge exits via timers (P4-03 + P4-07).

Additionally, during Pre-Charge Mode:

• When Pre-charge Level 2 (P4-32) is set to 0, the system can exit Pre-charge when the PI Feedback goes above the Pre-charge

Level (P4-01) in normal PI operation, or below the P4-01 level in inverse PI operation.

However, when Pre-charge Level 2 (P4-32) is set to a non-zero value, the system goes into Pre-Charge 2 instead when Pre-

Charge 1 completes via timer (P4-03) or level (P4-01). At this point, the drive will run at Pre-charge Frequency 2 (P4-06).

The system can exit Pre-charge 2 when the PI Feedback goes above the Pre-charge Level 2 (P4-32) in normal PI operation,

or below the P4-32 level in inverse operation. Refer to Figure 4.45 and Figure 4.46 for more information.

• When P4-02, Pre-Charge Frequency, or P4-06, Pre-Charge Frequency 2, are set to a value less than P1-06, Minimum Pump

Speed, the alarm “Freq. Ref < Pump Min P1-06” is displayed and the drive runs at the minimum speed.

• When Pre-Charge Loss of Prime parameters P4-05 and P4-08 are set to 0, the Loss of Prime detection is disabled.

• When Pre-Charge Loss of Prime parameters P4-05 or P4-08 are set to a value greater than 0, Loss of Prime detection will

operate after the output speed reaches the Pre-Charge Frequency set in P4-02 or P4-06.

•

The “Low Water” fault (H1-0o = 8F) is disabled.

• The “Low Feedback” fault is disabled when forward-acting PID is selected (b5-09 = 0) and the “High Feedback” fault is

disabled when reverse-acting PID is selected (b5-09 = 1).

• The “Not Maintaining Setpoint” fault is disabled.

• The “Feedback Loss” detection (4 to 20 mA wire break) is enabled, however, the Pre-Charge frequencies will override and

the b5-13 “feedback loss goto speed”.

The drive will always exit Pre-Charge Mode when Pre-Charge times P4-03 and P4-07 have expired. The drive will also exit

Pre-Charge Mode when one of the following conditions are met:

• P4-03 and P4-32 are set to 0.0

•

The “Disable Pre-Charge” digital input (H1-0o = 8C) closes.

•

A digital input programmed to “Low Water” (H1-0o = 8F) is deactivated (open when P1-30 = 0 or closed when P1-30 =

1).

• The PID feedback satisfies both Pre-charge levels 1 and 2 (all must be true):

Pre-charge timers P4-03 and P4-07 have NOT expired

PID is enabled (b5-01 > 0).

PID is NOT disabled via digital input

Pre-Charge Level Set (P4-01 > 0) (and if used, P4-32 > 0)

Feedback is greater than Pre-Charge Level (P4-01) and Pre-charge Level 2 (P4-32) (forward-acting PID, b5-09 = 0) or less

than Pre-Charge Levels 1 and 2 (reverse-acting PID, b5-09 = 1)

Drive is NOT in a “Feedback Loss” condition (4 to 20 mA wire-break detection).

4.6 Basic iQpump Setup and Application Preset Parameters

230

YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide

1 2 ... 225 226 227 228 229 230 231 232 233 234 235 ... 469 470

Yaskawa iQpump1000 AC Drive Quick Start User Manual Page 230

Comments to this Manuals

Yaskawa iQpump1000 AC Drive Quick Start User Manual Page 230

Comments to this Manuals

Related products and manuals for Equipment Yaskawa iQpump1000 AC Drive Quick Start