Brooks Instrument 5861i - Manual (Page 13)

2-5
Installation and Operation Manual
X-TMF-5861i-MFC-eng
Part Number: 541B111AAG
November, 2008
Brooks ® Model 5861 i
Section 2 Installation
2-7 Electrical Interfacing
To insure proper operation the Model 5861 i must be connected per Figures
2-2, 2-3, and 2-4 and configured according to Section 2-7.
Note: There are several functions on the printed circuit board which are not
used by the Model 5861
i. Avoid making connections marked in Figure 2-2
which are marked *.
The following minimum electrical connections must be made for new
installations:
Chassis Ground
Voltage and/or Current Signal Output
Signal Output Return
+15 to +28 Vdc Supply
Supply Common
Electrical Hook-Up
Signal Output
A 0-5 Vdc flow signal output is always available. The current signal output
is jumper - selectable for either 0-20 mAdc or 4-20 mAdc. The flow signal
output can be measured as a voltage and a current simultaneously on two
different pins of the D-connector. Pin 2 indicates the flowrate with a 0-5
Vdc signal proportional to the mass flow rate. Pin 4 indicates the flowrate
with either a 0-20 mAdc or 4-20 mAdc current signal as determined by the
jumpers on the printed circuit board (Refer to Section 2-7 for jumper
positions). Both the current and voltage signals are returned on Pin 10 of
the D-connector.
Figure 2-3 Maximum Allowable Loop Resistance