Parker Hannifin S.p.A. - Divisione S.B.C. LVD User’s Manual24TXRX/TX/RX+BR-BR0 V0 VRS-422MASTER X3 X3 X3NODE 1 NODE "n" FINAL NODE2.12 BackupWhen you need to keep the drive electronics powered up during mains losses, for exampleto preserve the simulated encoder function, it is sufficient to maintain power on terminals 1and 2 of connector X8.If bit b99.8 is set to one, the undervoltage alarm will be reset automatically when power isrestored.2.13 Status LEDsWhen the programming keypad is not connected, there are two LEDs visible on the drivepanel; the first indicates the presence of the electronics power supply, the secondcommunicates the following drive status information.LED OFF - Drive disabled with no active alarms.LED ON - Drive enabled.LED flashing at high frequency (10Hz) - Drive enabled, no active alarms, but control of I2tis active.LED flashing slowly with pause between 2 sets of flashes - Drive disabled with activealarm; you can identify the type of alarm by counting the number of LED flashes between thepauses.