SV-iS7 User Manual - Inverter Drive Supermarket

Chapter 10 Protective Functions
10-15
If the internal DC voltage goes down below a certain degree because of the inverter input voltage being blocked, the
inverter blocks output and displays low voltage failure(Low Voltage). If PRT-81 LVT Delay time has been set, in case of
a low voltage failure, the inverter output is blocked and it is handled as a failure after the set period of time.
A warning signal of a low voltage failure can be released using multi-function output or relay. However, in case of a
warning signal, the LVT Delay time does not apply.
10.1.16 Output blocking by multi-function terminal
Group Code No. Function Display Setting Display Unit
IN 65~75 Px Define 5 BX -
If you set the function of the multi-function output terminal at No. 2 BX and input it during operation, the inverter blocks
output and displays BX on the keypad display. The information on the frequency and current at the time of BX input is
to be monitored.
Acceleration resumes when the BX terminal is OFF with an operating command input.
10.1.17 How to terminate failure state
Group Code No. Function Display Setting Display Unit
IN 65~75 Px Define 3 RST -
To terminate the failure state, press the Reset key on the keypad or use the multi-function input terminal. The failure
state is terminated if you input the terminal in case of a failiure after setting the function of the multi-function input
terminal at No. 2 RST.
10.1.18 Selection of action in case of option card failure
Group Code No. Function Display Setting Display Unit
PRT 80 Opt Trip Mode
0 None
1 Free-Run
2 Dec
1:Free-Run
If there is a problem with the communication between the option card and the main body of the inverter or the option
card is separated from during operation, select the inverter action status. In case of No. 1 Free-Run, the inverter output
is blocked and the failure information is displayed on the keypad. In case of No. 2 Dec, it decelerates at the value set in
PRT-07.