BENSHAW RSi H2 Series - Low Voltage Fault; Selecting Low Voltage 2 Fault During Operation; Low Battery Voltage Warning

Parameter Descriptions
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5.8.17 PRT-81 Low Voltage Fault
When the internal DC bus voltage drops due to a power loss, the inverter turns off the output and
a low voltage fault occurs after the delay time set in PRT-81 (Low voltage fault delay time). When
the voltage recovers, the fault clears, and the inverter is ready to resume operation. Relay 1~5
(OUT-31~35) or Q1 (OUT-36) can be set to 11 (Low Voltage) to provide an output signal.
Group
Code
Name
LCD Display
Parameter Setting
Setting range
Unit
PRT
81
Low voltage trip
decision delay time
LVT Delay
0.0
0–60.0
sec
OUT
31~35
Multi-function relay 1–5
Relay 1–5
11
Low
Voltage
0-43
-
36
Multi-function output 1
Q1 Define
Low Voltage Fault Setting Details
Code
Description
PRT-81
LVT Delay
If the parameter value is set to ‘11 (Low Voltage)’, the inverter stops the output
first when a low voltage trip condition occurs, then a fault occurs after the low
voltage trip decision time elapses. The warning signal for a low voltage fault can
be provided using the outputs. However, the low voltage trip delay time (LVT Delay
time) does not apply to warning signals.
5.8.18 PRT-82 Selecting Low Voltage 2 Fault During Operation
Group
Code
Name
LCD Display
Setting
Setting range
Unit
PRT
82
Low voltage trip
decision during
operation
LV2 Trip Sel
0
No
0–1
-
Setting PRT-82 to ‘1 (Yes)’ which makes a low voltage condition a latched fault requiring a manual
reset. If the internal DC voltage decreases lower than a certain voltage, the inverter disconnects the
output and displays low voltage ‘2 (Low Voltage 2)'. Even if the voltage increases and goes back to
the normal state, unlike a low voltage fault, it remains in a fault state until manually reset.
5.8.19 PRT-90 Low Battery Voltage Warning
The H2 series has a battery used for the Real Time Clock (RTC). If the low battery voltage
warning function is set to ‘Yes,’ a low battery voltage warning occurs when the battery voltage is
lower than 2 V (normal voltage is 3 V). Replace the battery when the low battery warning is
displayed.
Group
Code
Name
LCD Display
Parameter Setting
Setting Range
Unit
PRT
90
Low battery
voltage detection
Low Battery
0
None
0
None
-
1
Warning