Yaskawa iQpump Controller Programming Manual - Manual (Page 155)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 155
P2 Pump Protection
◆ P2-01 Sleep Level Type
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If P2-01 = “0: Output Frequency”
The iQpump drive can be configured to enter a “sleep” condition based on output frequency. The drive will enter the sleep mode when the
output frequency falls below the programmed Sleep Level (P2-02) for a time specified by the Sleep Delay Time (P2-03).
This function is only active during operation in the Auto Mode. The display will indicate “Sleep” alarm when active.
The Sleep Level Type works in conjunction with the Sleep Level (P2-02), Sleep Delay Time (P2-03), and Alternative Sleep Activate
Level (P2-20). A multi-function digital output can be programmed to enable sleep (H1-xx = 82).
The sleep boost feature will only operate in simplex mode (P1-01 = 0) or in multiplex mode (P1-01 > 0) with just one drive running.
Note: If the value programmed into Alternative Sleep Activate Level (P2-20) is greater than 0.0 Hz, the sleep function will
become active when the output frequency rises above the programmed Sleep Level (P2-02) and above the programmed
Alternative Sleep Activate Level (P2-20). It is recommended that P2-20 be programmed 1 or 2 Hz above the P1-06
value. The sleep level using P2-20 enables the sleep mode; however, the drive still enters sleep based on P2-20. With the
normal default sleep level programmed in P2-02, the sleep cycle will not activate until the output frequency is above
P2-02.
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Function Description:
<0034>
Sleep Level Type = Motor Speed (rpm): When parameter P2-01 = 3, the drive will respond exactly the same as if P2-01 = 0 (Output
Frequency), except the sleep level parameter will now display units of “rpm” instead of “Hz”.
Sleep Level Type = Low Flow: When parameter P2-01 = 4, the drive will go to sleep based on the flow meter input. See the portion of
the specification that describes the flow meter for details.
Sleep Boost: The Sleep Boost function is intended to be used with a pump / pressure-tank system. In order for the sleep boost function to
activate, the following conditions need to be met:
- PI control must be active (b5-01 > 0)
- PI control must NOT be inverted (b5-09
≠ 1)
- Sleep must be enabled (P2-02 > 0.0)
- Drive must be running in “AUTO MODE” (not Hand or Local control)
- Sleep Boost function must be enabled (P2-21 > 0.0)
- Must be in simplex mode (P1-01 = 0) or must have just one drive running in multiplex mode (P1-01 > 0)
When the sleep boost function is enabled and the conditions are met for the drive to go into sleep, the P2-03 timer will then complete. At
that time, the setpoint will be increased by the amount entered into parameter P2-21. In order for the drive to go into sleep, the system
must reach the boosted setpoint for at least 0.5 seconds, or the time set into parameter P2-22 must expire.
Note: The Sleep Boost Timer will NOT start timing until after the P2-03 sleep delay timer has expired.
Setting Description
0 Output Frequency ( factory default )
1 Output Current
2 Feedback
3 Output Speed (rpm) <0034>
4 Low Flow (Terminal A1 - Flow meter required) <0034>