Brooks Instrument 5850i - Manual (Page 17)

2-7
Brooks ® Model 5850i
Section 2 Installation Installation and Operation Manual
X-TMF-5850i-MFC-eng
Part Number: 541B108AAG
December, 2008
Chassis Ground
Connect earth ground to pin 14 of the D-connector.
Valve Override (connection optional)
The valve override function allows full opening and closing of the valve
independent of the setpoint:
To open the valve, apply +15 to +28 Vdc to pin 12
To close the valve, connect pin 12 to ground.
Isolating pin 12 (no connection) returns the
controller to normal operation.
NOTE: For normal operation, pin 12 must be left open (floating).
Figure 2-5 Recommended I/O Wiring Configuration for Current Signals (Non-Isolated Power Supply)