OPERATING INSTRUCTIONS RH 90 C E Operation Motor protective relay Layout (Fig. 2-52:)
A fault in the motor system triggers the motor protective relay shutting off the electric motor automatically. Depending on the fault, one of the warning lamps (10) lights up. After rectification of the fault:  depress key (6) ESC  depress key (7) ENTER; a menu appears on the display screen (1)  depress keys (2) or (3) until "RESET Trip / Target" appears  depress key (7) ENTER; preset option "YES" is displayed
Fig. 2-52:
 depress key (7) ENTER once again  indicator lamp (8) is lit up (motor protective relay functional)
1 Display (menu) 2 Key - Scrolling through display text 3 Key - Scrolling through display text 4 Cursor (Terex|O&K Service) 5 Cursor (Terex|O&K Service) 6 Key - Escape (starts the main menu) 7 Key - Enter (release of motor protective relay after a fault 8 Indicator lamp - Ready 9 Indicator lamp - Motor under tension 10 Warning lamps (fault indication)
2-48
BA RH90C(3 720 760.00)-EN
