SYSTEM / Control System Attachment Operation Speed Increase Control (Only Machine Equipped with Front Attachment Parts) Purpose: Increases the maximum engine speed to the attachment (breaker) operating engine speed set by Dr. ZX when the attachment is operated. Operation: 1. When the following conditions exist and the at- tachment is operated, the 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 increased 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 faster (+) attachment (breaker) operating speed in the service mode. Engine Control Dial: Fast Idle Speed Position Power Mode Switch: HP Mode Attachment: Operated Work Mode: Attachment Mode Set the attachment selected by Dr. ZX to faster (+). NOTE: When the P mode engine speed is preset to a slower speed in Dr. ZX service mode, the maximum engine speed will not be in- creased when operating the attachment. T2-2-16