SYSTEM / Control System Attachment Operation Speed Decrease Control (Only Machine Equipped with Front Attachment Parts) Purpose: Decreases the maximum engine speed to the attachment (breaker) operating engine speed set by Dr. ZX when the attachment mode is selected. Operation: 1. When the following conditions exist and the front attachment is operated, MC sends the signals equivalent to the target engine speed set by Dr. ZX to ECM by using CAN communication. 2. ECM increases engine speed to the attachment operating speed set by Dr. ZX. Engine Speed When all condi- tions exist, the maximum en- gine speed is reduced to the speed set by Dr. ZX.
Engine Con- trol Dial Posi- tion Slow Idle Fast Idle Conditions: Dr. ZX: Resets the maximum engine speed to a slower (-) attachment (breaker) operating speed in the service mode. Work Mode: Attachment Mode Set the attachment selected by Dr. ZX to slower (-) T2-2-18