5.8 L: Protection FunctionsYASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 299Parameter Details5 L8-29: Current Unbalance Detection (LF2)Enables or disables output current imbalance detection when running in OLV/PM, AOLV/PM, or CLV/PM. Currentunbalance can heat up a PM motor and lead to demagnetization of the magnets. The current imbalance detection functionprevents such motor damage by monitoring output current and triggering the LF2 fault when current unbalance occurs.2A0004 to 2A0415, 4A0002 to 4A0630Setting 0: DisabledNo current unbalance protection is provided to the motor.Setting 1: Enabled (current and voltage detection)Setting 2: Enabled (current detection)The LF2 fault is triggered if an output current imbalance is detected. Drive output shuts off and the motor coasts to stop.Setting 3: Enabled (voltage detection)4A0930, 4A1200Setting 0: DisabledSetting 1: Enabled (current detection) L8-32 Cooling Fan Failure SelectionDetermines drive operation when a FAn fault occurs.Setting 0: Ramp to stopThe drive stops the motor using the deceleration time1 set in parameter C1-02.Setting 1: Coast to stopThe drive output is switched off and the motor coasts to stop.Setting 2: Fast stopThe drive stops the motor using the Fast stop time set in parameter C1-09.Setting 3: Alarm onlyThe operation is continued and a FAn alarm is displayed on the digital operator.Setting 4: Operation with reduced speedThe operation is continued but the speed is reduced to the level set in parameter L8-19.Note: FAn is detected as an error when setting 0 to 2 is selected. It is detected as an alarm when setting 3 or 4 is selected. L8-35: Installation Method SelectionSelects the type of installation for the drive and changes the drive overload (oL2) limits accordingly. Refer toTemperature Derating on page 447 for detail.Note: 1. This parameter is not reset when the drive is initialized.2. The value is preset to the appropriate value when the drive is shipped. Change the value only when using Side-by-Side installation orwhen mounting a standard drive with the heatsink outside the cabinet.Setting 0: IP00 enclosureFor an IP00 enclosure drive installed with at a minimum of 30 mm space to the next drive or a cabinet wall.Setting 1: Side-by-Side mountingFor drives mounted according to YASKAWA’s Side-by-Side specifications (requires 2 mm between drives).No. Name Setting Range DefaultL8-29 Current Unbalance Detection (LF2)2A0004 to 2A0415, 4A0002 to 4A0630:0 to 34A0930, 4A1200: 0, 11No. Name Setting Range DefaultL8-32 Cooling Fan Failure Selection 0 to 4 1No. Name Setting Range DefaultL8-35 Installation Method Selection 0 to 3 Determined by o2-04
