Warner Electric CBC-750 - Manual (Page 2)

Warner Electric • 800-825-9050 819-0494 2
The CBC-750 user selects either 120, 220, or 240 VAC
operation at the time of installation. Models with 6
volt, 24 volt, or 90 volt clutches and brakes are
available.
LED indicators on the faceplate of each control
tell the user the status of input signals, output
activation and any auxiliary inputs. A reset switch
resets the output should a short be detected.
Remote torque adjust potentiometer inputs are also
provided. Appropriate current range for each size
clutch or brake is selected by a dip switch. Constant
current for each level is assured by the control’s
design
Introduction
Warner Electric’s CBC-750 Series of Constant
Current Overexcitation Clutch-Brake Controls
are solid-state electronic controls designed to
increase the cycle rate capabilities and accuracies
of electromagnetic clutches and brakes. The controls
accomplish this by sending a momentary high
voltage overexcitation spike to the clutch and/or
brake magnetic coil to build a high density magnetic
flux field almost instantaneously. By using overexci-
tation, the response time is reduced as dramatically
as performance is increased. For example, the
current build up time of a 5 inch, 6 volt magnet is
reduced from 84 milliseconds to 2 milliseconds.
The CBC-750 printed circuit
board and control panel are
shown here. The seven individual
function switches and two range
switches evident in this photo
are detailed in Figure 8, page 10.
Releasing the lock pins and lifting the
top cover reveals the CBC-750’s lower
level where wire connections are
made. Schematic versions of these
terminal boards are found in this
manual on pages 8-10.