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Posi- and synchronous operating

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".

● Dene 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.

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KEB COMBIVERT F5-A Specifications

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