Yaskawa iQpump Controller Programming Manual - Manual (Page 81)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 81
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Function: Restart Enabled (Setting: 1E)
Depending on the setting of parameter L5-01, the iQpump drive may be configured to automatically attempt to restart itself after certain
faults. The Restart Enabled output will be closed once the restarts begin and will remain closed until a successful restart is accomplished
or the number of Auto Restart attempts as specified by L5-01 is reached.
A timing diagram for the Auto Restart function is contained in the parameter L5-01 description.
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Function: Overload (OL1) Alarm (Setting: 1F)
The OL1 fault function is designed to protect the motor. It estimates the motor’s winding temperature based on the output current, output
frequency, and time. The OL1 time is determined by the setting of parameters E2-01, L1-01, and L1-02. An Overload digital output will
close whenever 90% of the programmed OL1 time is exceeded.
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Function: OH Prealarm (Setting: 20)
The Overheat fault function (OH) is designed to protect the iQpump drive from excessive temperature damage. Thermistors attached to
the heatsink of the iQpump drive monitor the temperature near the devices attached to the heatsink (e.g. input diode modules, output
transistor modules) and will fault the drive if the temperature reaches 105oC.
An OH Prealarm digital output will close whenever the heatsink temperature reaches the level specified by parameter L8-02. Parameter
L8-03 will determine the drive’s response to reaching the OH Prealarm level, in addition to closing the configured digital output.
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Function: Drive Enabled (Setting: 38)
A iQpump drive Enable digital output will reflect the status of a digital input configured as an iQpump drive Enable input (H1-0x = 6A).
If the iQpump drive Enable digital input is closed then the iQpump drive Enabled digital output will also close.
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Function: Drive Waiting (Setting: 39)
A iQpump drive Waiting digital output will close during the time-out period between the input of a Run command and the expiration of
the delay time specified by b1-11.
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Function: Frequency Reduced, OH (Setting: 3A)
A Frequency Reduced, OH digital output will close when L8-03 = “4:OH Alarm and Reduce” and an overheat pre-alarm is detected.
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Function: Run from Serial Com (Setting: 3B)
A Run from Serial Com digital output will close when the drive run command is from embedded serial com or the com option card.
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Function: Pump 2 Control (Setting: 40)
The multi-function digital output is configured to enable a second lag pump based on the normal operating conditions of the iQpump,
which determines when the second lag pump should be activated or deactivated. The operation of the digital output is determined by the
programming of the Pump Mode selection (P1-01).
If P1-01 = 0, the iQpump is programmed for drive only; therefore, the Pump 2 Control output will be deactivated.
If P1-01 = 1 or 2, the iQpump will activate the Pump 2 Control output based on normal operating conditions.
Figure 1.70
Figure 70.