Pilz PMCprimo DriveP.01/AA0/4/0/0/208-480VAC - Manual (Page 46)

4.3 Safety functions
4 Function Description
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Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-28
If an SDI delay time t
m
has been configured, it will start when the new
direction of rotation monitoring is activated. In A, the SDI delay time
t
m
is shown = 0.
 The SDI delay time can be used to optimise the time taken to switch
the direction of rotation. The new direction can be activated while the
SDI delay time t
m
is running. Only then is monitoring of the old direc-
tion of rotation deactivated (see Case B in the illustration and timing
diagram).
Fig. 4-11: Changing the direction of rotation
Sicherheitsfunktion_SDI_S1_Diagramm_Umschalt
NOTICE
Please note that the direction of rotation may only ever be moni-
tored 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