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Voltage/Contact
Switches
The XBN has 4 contact/voltage switch blocks containing 8 switches each,
for a total of 32. The switches are numbered (1-32) with each switch
defining a corresponding field input as either a contact input or voltage
input (frequency inputs are characterized by their source as either contact
or voltage). Set each switch according to the type of signal the addressed
point should receive. The switch set to the left (V) reads voltage; set to
the right (C) reads contacts, as shown in Figure 26.
IN
OU T
Switches Inside
Front Door of XBN
xbnmult
Figure 26: Example of V/C Settings for Switches 1-8
Voltage / Contact
Switches
Dry Contact (e.g., from
relay or fan starter)
V
C
1
Voltage (e.g., directly from
2
maintained fan starter coil)
3
4
Frequency as Voltage
5
(e.g., pulsed input < 10Hz;
6
flow meter for turbine)
7
8
Frequency as Contact
(e.g., accumulator
contacting rapidly; kW
meter)
Point Multiplex Modules—Multiplex Binary
31
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