Warner Electric CBC-450 - Manual (Page 11)

Input Switching CBC-400/CBC-450 Series
The CBC-400 and CBC-450 series controls
employ opto-coupled inputs for switching, and
as such allow for various switching input
options. With the various options the controls
can be operated in, this allows for replacing
many of the older Warner Electric controls no
longer available.
Switching on the CBC-400/CBC-450 inputs
can be with mechanical switches such as
push-button or maintained toggle, solid state
switch such as sensors, i.e., photoelectric, and
inductive or capacitive, or outputs from
Programmable Logic Controllers or computer
interfaces.
Because the CBC-400/CBC-450 use opto-
coupled inputs, switching can be three-wire
(momentary) or two-wire (maintained)
configuration depending on available switches
or outputs and can be either sinking or
sourcing.
NOTe: Sinking input generally refers to the
use of NPN type switching transistors
where the load (opto-coupler) is connected
between the voltage source (+) and the
collector of the output switching device.
The switching device is between the DC
common and low side (-) input of the
control.
NOTe: Sourcing input generally refers to
the use of PNP type switching transistors
where the load (opto-coupler) is connected
between the DC common (-) and the
collector of the output switching device.
The switching device is between the +
voltage source and the high side (+)
input of the control.
Wiring the Switching Inputs
1. Determine operating mode
a. Alternate (Single)
b. Simultaneous (Dual)
2. Determine type of switching
a. Three-Wire (separate Channel 1, Channel 2
input switches or sensors momentary
contacts) (Refer to Figures 9 & 11)
b. Two Wire (single input switch or
sensor-maintained contacts) (Refer to
Figures 10 & 12)
3. Determine type of switching device
a. Sinking (Refer to Figures 9 & 10)
b. Sourcing (Refer to Figures 11 & 12)
4. Record Type Operating Mode and Switching
Scheme
a. _____________________________________
Example: Alternating Mode (Single), Three
Wire, Sinking
5. Proceed to the appropriate section for detailed
switching input hook-ups and configurations.
Alternate/Simultaneous Mode, Three-Wire,
Sinking…Page 14
Alternate/Simultaneous Mode, Two-Wire,
Sinking…Page 23
Alternate/Simultaneous Mode, Three-Wire,
Sourcing…Page 32
Alternate/Simultaneous Mode, Two-Wire,
Sourcing…Page 41
P-239-23 • 819-0500 Warner Electric • 800-825-9050 11