2-3
Installation
Since the Model 5866 Control Valve is not a positive shut-off, a
separate solenoid valve may have been installed for that purpose.
It should be noted that a small amount of gas may be trapped
between the downstream side of the pressure controller and the
solenoid, resulting in a surge upon opening of the solenoid valve.
This surge can be reduced in magnitude by locating the controller
and solenoid valve close together or by moving the solenoid valve
upstream of the controller.
CAUTION
2-6 In-Line Filter
It is recommended that an in-line filter, such as the Brooks Model 5848, be
installed upstream from the controller to prevent the possibility of any
foreign material entering the meter. The filter porosity should be
approximately ten times smaller than the orifice used in the installation,
however, it is recommended that the minimum porosity that does not
restrict the flow rate being used. The filtering element should be
periodically replaced or cleaned.
2-7 Electrical Interface
To insure proper operation, the Model 5866 must be connected per Figure
2-1. As a minimum, the following connections must be made for new
installations.
Pin Number
Description
1
Command Common
2 or 4
Signal Output
5
+15 Vdc Supply
6
-15 Vdc Supply
8
Command Input
9
Supply Voltage Common
10
Voltage Signal Common
13
+15 Vdc Supply (Current I/O)
Note: The Command Return is internally connected to Signal Return and Supply
Voltage Common.
2-8 Remote Setpoint (Command) Input
If the pressure controller will be commanded by an external voltage or
current signal, the command potentiometer is not used.
The command hookup is as follows:
a. Voltage Signal: Connect the external command signal to Terminal 8 and
the external command return to Terminal 1. Refer to Figure 2-1 and
Table 2-1.
b. Current Signal: Connect the command signal to Terminal 8 and the
command return to Terminal 1. Jumper J4 should be ON. Refer to
Figure 2-1 and Table 2-1.
Note: The command return is internally connected to signal return and
power supply common. Current supplied by the device providing the set
point will not be returned on the current loop.
Summary of Contents for 5866
Page 20: ...3 3 Operation Figure 3 2 Proportional Control Figure 3 3 Integral Control ...
Page 21: ...Brooks Instrument Model 5866 Pressure Controller 3 4 Figure 3 4 P I Control ...
Page 23: ...Brooks Instrument Model 5866 Pressure Controller 4 2 ...
Page 32: ...5 9 Troubleshooting Figure 5 3 Valve Adjusting Spacer Locations ...
Page 34: ...5 11 Troubleshooting Figure 5 4 Valve Adjusting Spacer Locations Normally Open N O Valve ...
Page 43: ...Brooks Instrument Model 5866 Pressure Controller 6 6 ...
Page 45: ...Brooks Instrument Model 5866 Pressure Controller 7 2 Figure 7 1 Model 5866E Parts Drawing ...
Page 47: ...Brooks Instrument Model 5866 Pressure Controller 7 4 Figure 7 2 Model 5866M Parts Drawing ...
Page 48: ...7 5 Parts List Table 7 3 Model 5866M Parts List ...
Page 49: ...Brooks Instrument Model 5866 Pressure Controller 7 6 ...
Page 65: ......
