4-84 
Low Voltage Detection Level Function: 
 
Wiring: 
R/L1
S/L2
T/L3
3
~
S1~S8
24VG
AC Motor Drive
單相UPS或
電池
1-Phase UPS or Battery
440V Vac: 207~380
Vdc: 292~537
Execute Low Voltage 
Detection Level Input
Notes for the emergency power supply. Please be aware of the following condition 
when emergency power is ON:
1. Execute Low Voltage Function ON (DI=62),Fan doesn’t run.
2. Execute Low Voltage Function ON (DI=62),No phase loss.
3. Execute Low Voltage Function ON (DI=62),run frequency of motor depends on 
the value of07-31
1
2
1
2
3
3
電磁接觸器動作時序圖
Before inputting emergency power, magnetic contactor ①and ③ are ON and 
magnetic contactor ② should be OFF. Magnetic contactor ③ should be ON 
after magnetic contactor is ON. Before removing battery and turning magnetic 
contactor ② to be ON, Magnetic contactor  ①and ③ should be OFF. 
 
Relevant parameters: 
07-30 Low Voltage Level Selection set 0 (Enable) 
07-13
 Low Voltage Detection Level set to 250V in 400 Class. 
03-00~03-07 Set EPS input (62) enable. 
07-31
 Set Low Voltage Run Frequency 
 
UPS or 
Battery 
Timing Diagram of Magnetic 
Contactor