Warnings For Ul/Cul Marking; Rated Motor Current (N036); Motor Protection Functions (N037 And N038); Set Values - Omron SYSDRIVE 3G3MV Setup Manual

Warnings for UL/cUL Marking

• Do not connect or disconnect wiring, or perform signal checks while the power supply is turned ON.
• The Inverter internal capacitor is still charged even after the power supply is turned OFF. To prevent
electrical shock, disconnect all power before servicing the Inverter. Then wait at least one minute after
the power supply is disconnected and all indicators are OFF.
• Do not perform a withstand voltage test on any part of the Inverter. This electronic equipment uses
semiconductors and is vulnerable to high voltage.
• Do not remove the Digital Operator or the blank cover unless the power supply is turned OFF. Never
touch the printed control board (PCB) while the power supply is turned ON.
• The Inverter is not suitable for use on a circuit capable of delivering more than 5,000 RMS symmetrical
amperes, 250 volts maximum (200-V-class Units) or 18,000 RMS symmetrical amperes, 480 V maxi-
mum (400-V-class Units).
• Take measures against overcurrent, overload, and overheating by using the Motor Protection Set-
tings.
Use 75°C copper wires or equivalent.
Low voltage wires shall be wired with Class I Wiring.
H Motor Protection Settings

Rated Motor Current (n036)

• Check the rated current on the motor nameplate and set the parameter.
• This parameter is used for the electronic thermal function for motor overload detection (OL1). By set-
ting the correct parameter, the overloaded motor will be protected from burning.
n036 Rated Motor Current
Setting 0.0% to 150% (A) of rated
range output current of Inverter
Note 1. The standard rated current of the maximum applicable motor is the default rated motor cur-
rent.
Note 2. Motor overload detection (OL1) is disabled by setting the parameter to 0.0.

Motor Protection Functions (n037 and n038)

• This parameters setting is for motor overload detection (OL1).
n037 Motor Protection
Function Selection
Setting 0 to 2
range
D Set Values
Value
0 Protection characteristics for general-purpose induction motors
1 Protection characteristics for Inverter-dedicated motors
2 No protection
CAUTION
Register 0124 Hex
No.
Unit of 0.1 A
setting
Register 0125 Hex
No.
Unit of 1
setting
Description
Changes during No
operation
Default setting (see note 1)
Changes during No
operation
Default setting 0