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Revolution time / available torque diagrams P26 cam timers
Available torque in Ncm 123456810203040506080100 Revolution timesecondsminutes 405060801003,356,68,31015 50 Maximum number of contacts,according to the rotation speed
Cam timers Other cam timers Example of a P25 cam timer with screw adju-stable cams.Required torque for contact tripping:6.5 Ncm. Sliding friction torque of a tripped contact:1Ncm. Example 1 Given an 8-second program with 2 contactsoperated simultaneously, find the maximum number of contacts- a) For a revolution speed of 8 seconds, theavailable torque is 21 Ncm.(see diagram) b) The required torque for simultaneous trip-ping of 2 contacts is:2 x 6,5 = 13 Ncm. 8 Ncm are still available. c) 8 Ncm:1 = 8 contacts.With a revolution time of 8 s, the maximumnumber of available contacts is 10, of which 2 with simultaneous tripping.
Available torque in Ncm Example 2 Given 6 programmable circuits of which 2 withsimultaneous tripping, find the minimum pro- gram time. a) b) The required torque for simultaneous trip-ping of 2 contacts is 2 x 6,5 mm= 13 Ncm; for the remaining 4 circuits the required tor- que is 4 x 1 = 4 Ncm.
123456810203040506080100 The total required torque is 17 Ncm.As a result, the minimum time of the programwill be 6 seconds (see diagram).
123456810203040506080100 Revolution time in seconds Cam timers with higher torque motor
Available torque in Ncm 123456810203040506080100 123456810203040506080100 Revolution time in seconds

CAM TIMERS - 11607 9.28