BENSHAW RSi H2 Series - Overload Trip and Early Warning

Parameter Descriptions
197
890053-00-02
5.8.5 PRT-17 Overload Trip and Early Warning
The inverter provides motor overload protection and will trip on an Overload Fault based on
amount of current (% motor amps) and time. The inverter responds to an overload fault based on
the setting of parameter PRT-20 (OL Trip Select). Select ‘1 (Free-Run)’ or ‘2 (Dec)’ to activate the
overload function and to determine the stop method when an overload fault occurs. Relay1~
Relay5 (OUT-31~35) or Q1 (OUT-36) can be set to ‘5 (Overload)’ to provide an output signal.
The inverter can also provide an overload warning (OLW) based on the settings of parameters
PRT-17 (OL Warn Select), PRT-18 (OL Warn Level) and PRT-19 (OL Warn Time). Set parameter
PRT-17 to ‘1 (Yes)’ to activate the overload warning function. Set the output current level in
parameter PRT-18, set the time in PRT-19. Relay1~ Relay5 (OUT-31~35) or Q1 (OUT-36) can be
set to ‘5 (Overload)’ to provide an output warning signal. The inverter does not trip when
warning levels are reached.
Group
Code
Name
LCD Display
Parameter Setting
Setting range
Unit
PRT
04
Load Level Setting
Load Duty
0
Normal Duty
0-1
-
1
Heavy Duty
17
Overload warning
selection
OL Warn Select
1
Yes
0–1
-
18
Overload warning
level
OL Warn Level
110
30–120
%
19
Overload warning
time
OL Warn Time
10.0
0–30
sec
20
Motion at overload
trip
OL Trip Select
1
Free-Run
-
-
21
Overload trip level
OL Trip Level
120
30–150
%
22
Overload trip time
OL Trip Time
60.0
0–60.0
sec
OUT
31~35
Multi-function
relay1–relay5 item
Relay 1–5
5
Over Load
-
-
36
Multi-function output
Q1 item
Q1 Define
A fault or warning occurs when the motor reaches an overload state based on the motor’s rated
current and the PRT settings. The amount of current for trips and warnings can be set separately.