YASKAWA L1000A - Page 103

4 Start-Up Programming & Operation
YASKAWA ELECTRIC TOEP C710616 38H YASKAWA AC Drive-L1000A Quick Start Guide 101
Start-Up Programming & Operation
4
■ S4-07: UPS Power
Sets the capacity of the UPS.
■
S4-08: UPS Operation Speed Limit Selection
Determines how a speed limit should be applied to the Rescue Operation speed (S4-15) when operating from a UPS. The
drive calculates the appropriate speed limit based on the UPS capacity set in S4-07. This speed limit helps prevent voltage
saturation and motor stall during Rescue Operation.
Setting 0: Disabled
Setting 1: Enabled until Light Load Direction Search is complete
Setting 2: Enabled until stop
■ S4-12: DC Bus Voltage during Rescue Operation
Sets the DC bus voltage during Rescue Operation.
■
S4-13: Rescue Operation Power Supply Deterioration Detection Level
Determines at which level of backup power supply deterioration a PF5 fault is triggered. The following conditions will
trigger PF5:
• During Rescue Operation, DC bus voltage < [S4-12 × (S4-13 – 10%)]
• 100 ms after Rescue Operation has been triggered, the DC bus voltage does not rise above S4-12 × S4-13 before the
motor starts
■
S4-15: Speed Reference Selection at Rescue Operation
Note: Available in drive software PRG: 7016 or later.
Selects the speed reference used for Rescue Operation.
Setting 0: The setting of parameter d1-25 is used as speed reference for Rescue Operation
Setting 1: The speed selected by digital inputs is used as speed reference
No. Parameter Name Setting Range Default
S4-07 UPS Power 0.0 to 100.0 kVA 0.0 kVA
No. Parameter Name Setting Range Default
S4-08 UPS Operation Speed Limit Selection 0 to 2 2
No. Parameter Name Setting Range Default
S4-12 DC Bus Voltage during Rescue Operation 0 to 1150 V 0 V
No. Parameter Name Setting Range Default
S4-13 Rescue Operation Power Supply Deterioration Detection Level 10 to 100% 80%
No. Parameter Name Setting Range Default
S4-15 Speed Reference Selection for Rescue Operation 0, 1 0
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