The Inputs
CUB Input and Output Setup • 9
4
CUB Input and Output
Setup
4.1. The Inputs
4.1.1. Connecting Sensors to the
MultiFlex CUB
Wiring an input to the input points on a Mul-
tiFlex board requires three steps:
1. Connect the sensor’s signal wires to the two
terminals of an input point.
2. Set the input type dip switch that corre-
sponds to the point being connected.
3. If necessary, connect the sensor to one of the
5V or 12V power terminals.
4.1.1.1.
Wiring
An input point on a MultiFlex board consists
of two terminals, as shown in
Figure 4-1
. One of
these terminals, labeled
SIG
, reads the signal
from the sensor, while the other, labeled
0v
is
where the sensor’s ground and/or cable shield
wire is connected.
4.1.1.2.
Sensor Wiring Types
Specific wiring types are required for each
type of sensor used with E2, Einstein, or RMCC.
All Analog Temperature Sensors and Air Flow Sen-
sors
Temperature and air flow sensors are to be
wired with shielded, 2 conductor, at least 22 GA
wire (Belden # 8761 or equivalent).
All Pressure Transducers, Humidity Sensors, and Re-
frigeration Transducers
Pressure and refrigeration transducers and
humidity sensors are to be wired with shielded, 3
conductor, at least 22 GA wire (Belden #8771 or
equivalent).
Dewpoint and Light Level Sensors
These sensors are to be wired with shielded,
4 conductor at least 22 GA wire (Belden # 8729
or equivalent).
4.1.1.3.
Input Type Dip Switches
Each MultiFlex input point has an input type
dip switch that must be set. Input type dip
switches are located in the switch banks labeled
S1 and S2.
The input type dip switch tells the input
board whether or not the sensor connected to the
point is a resistive type sensor. Generally, if the
sensor or transducer supplies its own voltage
signal to the point, the dip switch should be set
to the LEFT position. If the sensor uses variable
resistance and requires voltage to be supplied to
it from the input point, set the dip switch to the
RIGHT position. Dip switches for unused points
should be set to the RIGHT position.
Figure 4-1 - Input Board Points
Figure 4-2 - Input Type Dip Switches for CUB Board
