LS ELECTRIC SV-iS7 Series, User Manual

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Using Protection Features
345
Code Description
voltage trip will occur. If the PRT-81 LVT Delay time is set, the inverter blocks
output first when a low voltage trip condition arises, then a fault trip will
occur after the low voltage trip decision time has passed. The warning signal
for a low voltage fault trip can be provided using the multi-function output
or a relay. However, the low voltage trip delay time (LVT Delay time) does not
apply to warning signals.
OUT-33 Q1 Define,
OUT-31
– 32 Relay1,
2
S et to “ 11 (Low Voltage) ” . The inverter stops the output first when a low
voltage trip condition occurs, then a fault trip occurs after the low voltage
trip decision time elapses.
10.2.13 Output Block via the Multi-Function Terminal
Group Code LCD Display Parameter Setting Setting Range Unit
IN 65 – 72 Px Define 5 BX - -
PRT 45 BX Mode - 0.0 0.0 – 600.0
Output Block by Multi-function Terminal Setting Details
Code Description
IN-65 – 71 Px
Define
When the operation of the multi-fun ction input terminal is set to “5 (BX)” and is
turned on during operation, the in verter blocks the output and “BX” is
displaye d on the keypad display. While “BX” is displayed on the keypad, the
inverter’s operation information including the operation frequ ency and current
at the time of the BX signal can be monitored. The inverter resumes operation
when the BX terminal turns off and operation command is input.
PRT-45
The default setting value of BX mode (PRT-45) is 0.0 [sec], and it allows the
inverter to operate in free-run mode. If the BX terminal receives input, the
inverter will block output immediately.
If BX mode (PRT-45) is set to 0.1 [sec], the motor will decelerate by value set at
PRT-45.
If PRT-45 set value is too small, the inverter cannot decelerate at that value and
OVT may occur. Set the PRT45 time according to the inverter capacity and load.