External Valve

PC19688-UN-11JUN14

A - Hydraulic Control Block

B - Electronic Valve Body

C - External Valve Control Lever

D - Remote Mount Electronic SCV Control Lever

E - LED Indicator

External valve gives Application Controller 1100 the ability to control machine hydraulics. John Deere external valve design and functionality varies for open- and closed-center hydraulic systems. Use external valve:

• If Application Controller 1100 does not have the ability to control machine hydraulics. Typically, older machine models or non-John Deere models equipped with John Deere guidance system and an ISO connector.
• To conserve machine selective control valve (SCV) connections. External valve can connect to an open SCV on machine or can use power beyond as a hydraulic power source from machine.

John Deere External Valve Components

Hydraulic control block (A) directs hydraulic flow to hydraulic cylinders for implement position.

Electronic valve body (B) receives commands from application controller and communicates them to hydraulic control block.

CAUTION: To avoid serious injury, keep area around equipment clear.

Moving external valve control lever (C) may cause implement to move.

External valve control lever manually controls hydraulic control block.

Remote mount electronic SCV control lever (D) manually controls hydraulic control block from operator’s station.

LED Indicator (E) provides system status of electric valve body.

• Green – Valve is receiving command from controller.
• Orange – Valve is powered up. No command from controller.
• Red – Indicates a problem.

  (Reference Troubleshooting section.)