Function description
Operating Manual PMCprotego S2-2(-C)
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}
The SDI delay time can be used to optimise the time taken to switch the direction of ro-
tation. The new direction can be activated while the SDI delay time t
m
is running. Only
then is monitoring of the old direction of rotation deactivated (see Case B in the illustra-
tion and timing diagram).
NOTICE
Please note that the direction of rotation may only ever be monitored in one
direction. The safety function SS1 will trigger if monitoring in both directions
is activated simultaneously.
v
t
SDI
SDI Neg Activate
SDI Pos Activate
SDI
v
t
SDI
SDI Neg Activate
SDI Pos Activate
SDI
tm
A
B
tm = 0
Fig.: Changing the direction of rotation
