KEB COMBIVERT F5-A, Applications Manual, Page: 297 / 552

Posi- and synchronous operating
© KEB, 2012-10 COMBIVERT F5-A, -E, -H Page 7.12 - 5
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7.12.2 Approach to reference point
For an approach to reference point, the following conditions must be met:
●
program and connect an input as reference point switch(PS.18). The same input can also be used
as a limit switch. Since the limit switches are "zero active" for protection against cable breakage, the
reference switch, in this case, is also "zero active". If the reference switch is connected to its own
input, it is "one active".
● Define an input for the start of the approach to reference point (with
PS.19/ only necessary in mode 1
approach to reference point).
●
connect the limit switches (forward = right limit switch / reverse = left limit switch) to the inputs which
are programmed in di.11...12 with the function "32: forward" and "64: reverse". If the limit switches
shall be omitted (e.g. at rotary table applications), no input may be assigned with the function "for-
ward" or "backward".
●
The approach to reference point must be activated in "approach to reference point mode" of parame-
ter PS.14.