Yaskawa iQpump Controller Programming Manual - Manual (Page 206)

206 YASKAWA TM.iQp.07 iQpump Controller Programming Manual
◆ P4-22 Low City Pressure Input Delay
<0034>
Setting Range: 1 ~ 1000 s
Factory Default: 10
Refer to parameter P4-22 in Appendix A for description details.
◆ P4-23 Lube Pump Delay Timer
<0034>
Setting Range: 0.0 ~ 300.0 s
Factory Default: 0.0
The Lube Pump Delay Timer parameter provides a digital output to trigger a lube pump or valve prior to starting the motor.
Whenever the drive is supposed to start turning the motor, the “Lube Pump” digital output will energize for a set amount of time before
the drive actually starts. This will allow a small lubrication pump or valve to pre-lubricate the pump seals prior to the main pump
starting.
If the drive is running but base-blocked via the multi-function digital inputs (H1-0x = 8 or 9), the lube pump output will not energize
when the base-block is released.
■
Function Description:
<0034>
Lube Pump: The Lube Pump function will operate anytime the drive is going to accelerate from zero speed. Instead of starting, the drive
will remain base-blocked at zero speed until the lube pump timer expires. The lube pump timer is configured by parameter P4-23. If
parameter P4-23 is set to zero then the lube pump feature is disabled. Whenever the lube pump timer is timing (after a start or re-start),
the Lube Pump digital output (H2-0x = 55) will be energized. This digital output is meant to connect to a small lubrication pump or
solenoid valve that will lubricate the main pump bearings.
If an Anti-Jam is detected, the Lube Pump will NOT activate between Anti-Jam retries.
Figure 1.156
Figure 160. Lube Pump Enabled
Internal Run
Command
Output
Frequency
P4-23
Lube Pump Time
Lube Pump
Running / DO
NOTE: Internal Run Command consists of the actual run command (auto run , hand , terminals , serial com, operator
etc..) and other Iqpump features , including : sleep, fault auto-restart, 2-motor alternate , multiplex control, run /stop
control, city pressure, etc...