Yaskawa iQpump Controller User Manual - Manual (Page 247)

G.5 Utility Delayed Start Function
YASKAWA TM.iQp.06 iQpump Controller User Manual 247
G.5 Utility Delayed Start Function
The following is a summary of a set-up procedure and application examples included in this section.
• Utility Delayed Start Function
The Utility Start Delay function allows multiple iQpump drives to be supplied from the same utility source. Using this function, it is
possible to program staggered restart times to eliminate inrush surging on the power source upon restoration of power following a power
outage. This function is used in conjunction with either the HOA keypad or an external run command.
◆ Set-Up Example for the Utility Delayed Start Function
Three 150 HP iQpump drives are connected to the same utility pole. The engineering requires that the drives automatically restart on loss
of power, however the drives must stagger restart by 30 seconds each to eliminate inrush.
Required Parameter Changes:
Note: All other parameters are at factory default settings.
◆ Related Parameters
Parameter Drive A Drive B Drive C
P4-11 0.5 min 1.0 min 1.5 min
Parameter
No.
Addr.
Hex
Parameter Name
Digital Operator Display
Description Setting Range
Factory
Setting
Menu
Location
P4-11 82A
Utility Start Delay
Utility Delay
Sets the amount of time the drive will delay starting if a run
command is present at power up. A setting of 0.0 disables this
function.
0.0 ~ 1000.0 min 0.2 min Programming