5.7 L: Protection Functions Time Output Frequency 2.0 Hz (fixed) L4-01 OFF ON Frequency Dectection 2 Figure 5.37 Frequency Detection 2 • The braking sequence should be designed as follows: • A normally open signal (N.O.) should be used to control the brake so that it is released when terminal MA-MC closes. • An external circuit should be added to ensure the brake is fully applied in case of a fault or emergency condition. • An additional external circuit should also be added to ensure the brake releases properly when an Up/Down Command is entered.
• When changing the speed using an analog signal, make sure that the source of the frequency reference is assigned to the control circuit terminals (b1-01 = 1). • A sequence to open and close the holding brake appears in the diagram below. UP S1-SC Output frequency 0 Time Output MA-MC (H2-01=5) Holding brake Figure 5.38 Holding Brake Time Chart u L5: Fault Restart The drive can be set up to perform a self-diagnostic check and resume the operation after a fault has occurred. When the self-check is successful and the cause of the fault has disappeared the drive will restart. The drive can attempt to restart itself following the faults listed below.
When L2-01 is set to 1 or 2 (continue operation during momentary power loss) Parameter Details Use parameter L5-01 to set up automatic fault restart. To output a signal during fault restart, set H2-01 to 1E. Sets the number of times that the drive may attempt to restart itself. n L5-01: Number of Auto Restart Attempts 5 The restart counter is incremented at each restart attempt, regardless of whether the attempt was successful. When the counter reaches the number set in L5-01 the operation stops and the fault has to be reset manually after correcting the cause. The number of fault restarts is reset back to zero when: • The drive operates normally for ten minutes following a fault restart.
• A fault is cleared manually after protective functions are triggered. • The power supply is cycled. SIEP C710606 33A OYMC AC Drive – J1000 User Manual 107 OFF ON b6-02 d1-01 d1-03 L4-01b6-01 ncy (Enabled when b1 b4-01 tection 2 DC Injection OFF Closed Fault Name Fault Name oC (Overcurrent) PF (Input Phase Loss) oL1 (Motor Overload) rH (Braking Resistor Fault) oL2 (Drive Overload) Uv1 (DC Bus Undervoltage) oL3 (Overtorque 1) No. Name Setting Range Default L5-01 Number of Auto Restarts 0 to 10 0