Summary of the content on the page No. 1
E6581364②
TOSVERT VF-AS1/PS1
Commercial Power Supply Backup and
Commercial Power Supply/Inverter Switching
Instruction Manual
Technical information described in this document is used to explain typical operations and
applications of products, and this is not intended to grant warranty or licensing right on its
use regarding TOSHIBA group or a third party intellectual property and other right.
Summary of the content on the page No. 2
E6581364 - Contents - 1. Commercial Power Supply Backup..................................................................................... 2 1.1. Standard connection diagram...................................................................................................... 2 1.1.1. Switching circuit connection diagram, Time chart, Parameter settings .................................... 3 1.2. Standard connection diagram (Star-delta switching start) ..................................
Summary of the content on the page No. 3
E6581364 1. Commercial Power Supply Backup When the inverter’s protective function is activated, switching power to commercial power supply makes the motor run immediately. 1.1. Standard connection diagram *2 MC1 PO PA/+ PC/- PB For motor protection *4 *3 *2 THR MCCB MC2 MC3 R/L1 U/T1 Motor S/L2 V/T2 Main circuit I M T/L3 W/T3 Run F Control power supply command *1 backup option R *7 Stand-by ST +SU *6 RES Reset FLA S1
Summary of the content on the page No. 4
E6581364 1.1.1. Switching circuit connection diagram, Time chart, Parameter settings Inverter Inverter protective F L trip occurs Speed detection time action signal FLA FLC Setting FLX frequency Frequency after speed is detected ON OFF 0Hz X Inverter-side switching wait *2 P24-OUT1(RY1) time for inverter run ON ON output X Commercial power switching wait time RY1 P24-OUT2(RY2) (Inverter) for commercial ON MC2 power run output
Summary of the content on the page No. 5
E6581364 1.2. Standard connection diagram (Star-delta switching start) This is the circuit to switch the motor to commercial power supply Star Delta (star-delta) connection startup when the inverter’s protective function is activated. *2 MC1 PO PA/+ PC/- PB For motor protection *4 *3 THR *2 MCCB MC2 MC3 MCY R/L1 U/T1 Motor S/L2 V/T2 Main circuit I M T/L3 W/T3 MCD Run F Control power supply command *1 backup option R *7 Stand-by ST +SU *6 Reset RES FLA FLB S1 Contro
Summary of the content on the page No. 6
E6581364 1.2.1. Switching circuit connection diagram, Time chart, Parameter settings Inverter protective Inverter F L action signal trip occurs Speed detection time FLA FLC FLX Setting frequency Frequency after speed is detected ON OFF X 0Hz Inverter-side switching *2 wait time P24-OUT1(RY1) for inverter run ON ON output X Commercial power switching wait time RY1 P24-OUT2(RY2) (Inverter) for commercial ON MC2 power run output Run s
Summary of the content on the page No. 7
E6581364 Title Function Adjustment range Setting value Output signal selection of commercial 1 (Automatic switching when 0 to 3 power/inverter switching tripped) *3 Inverter side switching waiting time 0.1 to 10.0 seconds Different for each model Commercial power side switching waiting *3 0.37 to 10.0 seconds 0.62 time 20 *1 Input terminal selection #6 (S2) 0 to 135 (Emergency stop) 46 Output terminal selection #1 (OUT1) 0 to 119 (Commercial po
Summary of the content on the page No. 8
E6581364 2. Commercial Power Supply/Inverter Switching The motor runs on commercial power supply under rated operating conditions and when the motor runs in energy saving mode with its input power frequency lowered, this circuit switches the motor to the inverter power without stopping the motor. 2.1. Standard connection diagram *2 MC1 PO PA/+ PC/- PB For motor protection *4 *3 *2 THR MCCB MC2 MC3 R/L1 U/T1 Motor S/L2 V/T2 Main circuit I M T/L3
Summary of the content on the page No. 9
E6581364 2.1.1. Switching circuit connection diagram, Time chart, Parameter settings Commercial power switching Inverter protective frequency hold time F L Commercial power action signal Speed detection time switching frequency FLA FLC FLX Frequency after speed is detected Setting frequency (Commercial (Inverter) 0Hz power) Inverter-side switching S3 *2 P24-OUT1(RY1) wait time for inverter run ON ON output S3 Commercial power sw
Summary of the content on the page No. 10
E6581364 2.2. Precautions 1. Make sure to interlock the magnetic contactor (MC3) on the inverter output side with the commercial power supply magnetic contactor (MC1). 2. Magnetic contactor (MC2) can be omitted for normal operation but this is needed to isolate the inverter circuit in case a short-circuit fault occurs inside the inverter. Examine whether it should be installed or not considering the importance of the system concerned. 3. Check to make sure the phase sequence of the
