Signal Isolation Card

For constant tension winding systems - using the large series (KB, POB, PLB) brakes or (KC, POC, PHC) clutches, ultrasonic sensor, signal isolation card, and your  power supply that accepts a 0-10 volt control signal.

Signal Isolation Card
Signal Isolation Photo
Dimensions, L x W x H:  7" x 4.5" x 2",   See drawing.


Constant Tension Winding System
 SIC-Ultrasonic Unwind Drawing

The Signal Isolation Card 'SIC' powers the ultrasonic sensor.   The ultrasonic sensor measures the diameter of the roll, to keep tension constant as the roll size changes, & sends a 0-10 VDC signal to the 'SIC'.   The SIC 0-10 volt DC output signal controls a Placid Industries PST your constant current D.C. power supply. Web tension is adjusted by the Tension Adjustment Potentiometer.


Signal Isolation Card Specifications

A.C. Input . . . . . . . .  110 / 220 VAC, user selectable, 50/60 Hz., 6.8 V.A. max.
A.C. Input Fuse . . . . .   0.5 amps  (External, supplied by customer) 
Output. . . . . . . . . .   0 to 12 volts D.C., max.
                            Adjustable to standard 0-10v limit & lower.
0-10v Input Impedance  . .  1 Meg Ohms
Input-Output Isolation . .  Yes

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