Yaskawa iQpump Controller Programming Manual - Manual (Page 141)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 141
P1 Pump Basic
◆ P1-01 Pump Mode
Lead-Lag Operation P1-01 Setting 1 & 2
The iQpump drive can be configured to specify the number of pumps to be controlled by programming the Pump Mode (P1-01). The
maximum number of pumps that can be controlled is 3 pumps (1 lead and 2 lag). The iQpump can be configured for lead-lag operation
where 1 pump is controlled by the iQpump drive's output (lead) and the other two pumps controlled by the drive's digital outputs (M1-
M2, M3-M4) or lag operation.
To control the two lag pumps requires the multi-function digital outputs (H2-0x) to be programmed for Pump 2 Control (H2-01 = 40) and
Pump 3 Control (H2-01 = 41).
Note: The factory defaults for the digital outputs (H2-0x) are programmed for Pump 2 and Pump 3 Control.
Auxiliary Pump Control P1-01 Setting 1 & 2
The iQpump drive can be configured to control multiple pumps with multiple iQpump drives by programming the Pump Mode (P1-01).
The maximum number of pumps that can be independently controlled is 3 pumps.
To configure an Auxiliary Pump Control system requires the first drive to be programmed for drive + 1 (P1-01 = 1) and the second drive
(last) for drive only (P1-01 = 0). The multi-function digital output (M1-M2) needs to be programmed for Pump 2 Control (H2-01 = 40).
The first drive starts to run and brings the second drive online based on the pump system demand. The moment the second drive starts
running, the multi-function digital output (M1-M2) closes.
The multi-function digital output provides an input command (Terminal S7 and SN) to the first iQpump drive and initiates a Fixed Speed
Auto function on the first drive (H1-05 = 86).
When the Fixed Speed Auto input is closed, the first drive will run at a fixed speed without PID control. When the second drive goes to
sleep, the Fixed Speed Auto input opens and the first drive starts operating under normal pump control.
When using the iQpump drive to control 3 pumps, all of the drives need to be daisy chained in a similar configuration. The last drive
always has to be programmed for drive only (P1-01 = 0) and the other drives for duplex mode (P1-01 = 1).
Setting Description
0 Drive only (Simplex) ( factory default )
1 Drive + 1 Pump (Duplex)
2 Drive + 2 Pumps (Triplex)
3 MEMOBUS / Modbus Network <0034>