5.7 L: Protection Functions Note: When output frequency is 6 Hz or less, Stall Prevention During Run is disabled regardless of the setting in L3-05/06. Setting 0: Disabled Drive runs at the set frequency reference. A heavy load may cause the motor to stall and trip the drive with an oC or oL fault. Setting 1: Decelerate Using C1-02 If the current exceeds the Stall Prevention level set in parameter L3-06, the drive decelerates at Decel Time 1 (C1-02). Once the current level drops below the value of L3-06 minus 2% for 100 ms it accelerates back to the frequency reference at the active acceleration time. Setting 2:
Decelerate Using C1-04 Same as setting 1 except the drive decelerates at decel time 2 (C1-04). n L3-06: Stall Prevention Level During Run Sets the current level for Stall Prevention During Run. Depending on the setting of parameter L3-23 the level is automatically reduced in the constant power range (speed beyond base speed). The upper limit and default for this setting is determined by C6-01 and L8-38. u L4: Speed Agree These parameters set up the speed agree and speed detection functions which can be assigned to the multi-function output terminal MA-MB-MC. n L4-01:
Speed Agreement Detection Level Parameter L4-01 sets the detection level for the digital output functions “Speed Agree,” “Frequency Detection 1,” and “Frequency Detection 2.” Refer to H2-01: Terminal MA/MB/MC Function Selection on page 95 , Settings 2, 4, and 5. n L4-07: Speed Agreement Detection Selection Determines when frequency detection is active using parameter L4-01. Setting 0: No Detection During Baseblock No detection. Setting 1: Detection Always Enabled Detection always enabled. n Notes on Controlling the Brake for the Hoist Application • The frequency detection function is used for controlling the brake.
When an external Baseblock command is present while a Run command is active, the frequency reference will be kept as long as the Run command is active. To avoid improper brake operation make sure that frequency detection is set so that the brake does not open during Baseblock (L4-07 = “0”, default). If the load slips during stop, make it greater than E1-09 or 2.0 Hz until the load no longer slips. 106 SIEP C710606 33A OYMC AC Drive – J1000 User Manual No. Name Setting Range Default L3-05 Stall Prevention Selection During Run 0 to 2 1 No. Name Setting Range Default L3-06 Stall Prevention Level During Run 30 to 150 No.
Name Setting Range Default L4-01 Speed Agreement Detection Level 0.0 to 400.0 Hz 0.0 Hz No. Name Setting Range Default L4-07 Speed Agreement Detection Selection 0 or 1 0 Brake Open/Close Brake Activation Level Function Parameter Signal Parameter Frequency Detection Conditions L4-07 = 0 Frequency Detection Level L4-01 = 2.0 to 3.0 Hz Frequency Detection 2 H2-01 = 5 Frequency Detection Width 2.0 Hz (fixed)