Yaskawa iQpump1000 AC Drive Quick Start - Manual (Page 184)

No. Parameter Name Setting Values
Q4-06 Wake-Up Water Level
Default: 30.0 ft
Min.: 0.0
Max.: 1200.0
Q4-07 Water Level Control Sleep Wake-Up Time
Default: 1 s
Min.: 0
Max.: 3600
Q4-08 Level Control Minimum Speed
Default: 0.00 Hz
Min.: 0.00
Max.: 400.00
Q4-09 Low Level Detection Level
Default: 0.0 ft
Min.: 0.0
Max.: 1200.0
Q4-10 Low Level Detection Time Delay
Default: 0.0
Min.: 0.0
Max.: 300.0
Q4-11 Low Level Behavior
Default: 1
Range: 0 to 3
Q4-12 Water Level Control Auto-Restart Time
Default: 5.0 min
Min.: 0.1
Max.: 6000.0
Q4-15 Low Water Level Detection Time Unit
Default: 0
Range: 0, 1
U1-01 Frequency Reference 10 V: Max frequency
U1-97 Water Level
Full scale:
10 V = Q4-02
u iQpump Functions
n Low City or Low Suction Inlet Pressure
This function is used with low suction inlet pressure switches on pressure booster systems for buildings that get their main
water supply from a municipality. This pressure switch enables and disables the pump system when the inlet supply is at a
low demand and when running the pump system in this condition will cause damage.
An inlet pressure switch is wired directly into the drive using one of the digital input terminals. If the pressure switch is active
and sufficient pressure is available, the drive system will operate normally. If the pressure switch indicates that incoming
pressure is too low, the drive will take the following actions:
• The drive will be forced into a sleep-like state (coast to stop).
• Any drives staged in multiplex mode will immediately coast to stop.
• The selected alarm “Low City Pressure”, “Low Suction Pressure”, or “Low Water In Tank” will be displayed (determined
by P4-24).
All drives will restart when sufficient pressure returns.
Required Control Wiring
Any one of the multi-function digital inputs (S1 to S8) must be wired and programmed with a low suction inlet pressure switch.
The appropriate terminal parameter (H1-oo) must be to set 73 (Low City Pressure). The action of the switch (normally open /
normally closed) is set in parameter P4-21.
Start Up Procedure
1.
Set all other parameters required for the application such as PI control loop, sleep, motor, and I/O parameters.
2.
Set one digital input for the low suction inlet pressure switch (H1-oo = 73). Wire the switch to this terminal.
3.
Configure the terminal for a normally open / closed switch type using parameter P4-21.
4.
Configure the delay times for activating and removing the alarm in parameters P4-23 and P4-24. This can be used to
stop the drive from cycling too frequently if the pressure varies a lot.
5.
Select the alarm message that will be displayed when a Low City condition is detected using parameter P4-24. Options
include “Low Cty Pressure”, “Low Suction Pres”, and “Low Watr In Tank”.
4.5 iQpump Presets and Functions
184 YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide