TM 5-3895-374-24-1 Commissioning terminal Fault display In the event of the speed controller locking, the nature of the fault appears on the screen However, the display of electrical quantities remains possible by pressing keys                   and Faults which may appear Speed Explanations on the screen controller code Phase failure PHF Mains phase failure Undervoltage USF Mains supply too low Overvoltage OSF Mains supply too high OverterPerat. OhF Speed controller overheated Motor overload OLF Motor overload, thermal protection tripped Motor Phase OLF Current loss in a motor phase Overbraking U ObF Overbraking (overvoltage) Overbraking 1 ObF Overbraking (overcurrent) Overcurrent 1 OcF Transient overcurrent or short-circult Overcurrent 2 OcF Transient overcurrent or short-circuit Cap. relay CrF Capacitor charge relay closure command fault Overspeed SPF Speed regulation fault, incorrect setting or Tacho failure SPF No TG feedback signal Serial link SLF Serial link communication fault Intern InF Internal connection fault Store fault InF EEPROM memory storage fault: recall the factory settings (p. 110) or the customer settings (p. 111) Autotest  inval InF Autotest invalid  the AUTOTEST switch has been moved to the ON position during speed controller operation (page 3-255)