2-7
Brooks
®
Models 0152/0154
Section 2 Installation
Installation and Operation Manual
X-SE-0152-0154-eng
Part Number: 541C052AAG
March, 2008
2-11 Jumper Settings and Functions
As a standard, the required I/O selections are done at the factory upon
ordering. When only 0-5 Vdc inputs and outputs are required, no optional
I/O board has to be installed. In this case the connectors between main
board and optional I/O board must be jumpered according to Table 2-5 and
Figure 2-2 below.
For use of input and output signals other than 0-5 Vdc ( 0-10 Vdc, 0-20 mA
and 4-20 mA), the optional I/O board has to be installed. This 4 channel
optional I/O board is mounted on top of the mainboard of the readout. Each
channel of the converter consists of a separate input (flow or pressure) and
output (setpoint) converter. The range can be configured separately for
each channel by means of jumpers. No additional adjustment of
potentiometers is necessary.
The microprocessor board uses 0-5 Vdc signals internally. As a result Flow
or Pressure inputs other than 0-5 Vdc are first converted by the optional
I/O board from either 0-10 Vdc, 0-20 mA or 4-20 mA to 0-5 Vdc. Setpoints
to be generated by the readout are converted by the optional
I/O board from 0-5 Vdc to either 0-10 Vdc, 0-20 mA or 4-20 mA.
NOTE:
Care has to be taken when using mA I/O. Flow and setpoint grounds of the
instrument are high impedance to eliminate voltage drop across long lines
for Volt I/O. The high impedance ground lines are not designed for sinking
mA signals. Sinking mA signals will result in faulty flow information.
Always connect the mA ground lines to power ground and connect the
readout’s high impedance ground lines to the same power ground as well.
When Brooks Mass Flow Controllers and Meters are connected, this is
automatically done at the controller or meter side.
Table 2-5 Jumper Settings for 0-5 Vdc I/O
Connector
Jumper positon
J4
No jumpers necessary
J5
1-2,3-4,5-6,7-8
J6-J9
1-2,3-4,5-6
Figure 2-2 Main Board: Jumper and Potmeter Locations
