Bimba PFC-LRT - Manual (Page 19)

Leaders in Actuation.
Bimba Manufacturing Company
Monee, IL 60449-0068
Telephone: 708.534.8544
Email: [email protected]
www.bimba.com
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The information presented is in Bimba’s best engineering opinion and should be used for reference only. Recommendations derived should be verified under
actual operating conditions. Bimba reserves the right to change specifications without prior notice.
19
When the cylinder is fully retracted, Relay 2 is turned on. Pushing the manual extend push button will
cause the cylinder to extend until it reaches the set point (14"). At this time, Relay 2 will turn off and
motion will cease. Relay 1 will be on and depressing the retract switch will cause the cylinder to retract
until Relay 1 turns off at 4". When Relay 1 turns off, motion will cease and the process can be repeated
whenever desired.
FIGURE 18 illustrates the relay operations and the ideal voltage output versus piston travel (seen at
Terminals 6 and 7). Control potentiometer 1 is used to set the inner limit (4") and control potentiometer
2 is used to set the outer limit (14"). Relay 1 is energized any time the cylinder is extended more than 4".
Relay 2 is energized any time the cylinder is less than 14". These two points are the boundaries of cylin-
der travel.
FIGURE 18