User Manual 08/2003 Edition

5
5 Description of the Functions 02.99 05.03
5.5 SIMODRIVE POSMO A functions
5.5.14 Limit switch monitoring functions
Description
Hardware limit
switch
(HW limit switch)
Traversing to a
hardware limit
switch?
5-178
For POSMO A, the following limit switch monitoring functions can be
used:
Hardware limit switch (from SW 2.0)
Software limit switch
The limit switch monitoring functions can be used to limit the operating
range or to protect the machine and are also available in the n–set
mode.
ÏÏ
ÏÏ
ÏÏ
ÏÏ
Mechanical ÏÏ
end of
traversing
range
ÏÏ
Hardware limit
switch
start
(NC contact)
Software limit
switch
start
P6
Input terminal
with function number 28
”hardware limit switch, start”
Fig. 5-19 Limit switch monitoring functions
Software limit
switch
end
P7
Hardware limit
switch
end
(NC contact)
ÏÏ
ÏÏ
ÏÏ
ÏÏ
Mechanical
end of
traversing
range
Input terminal
with function number 29
”hardware limit switch, end”
ÏÏ
ÏÏ
There is a hardware limit switch for every axis and every approach direction.
The hardware limit switches must be connected to an input terminal
(P31/P32) with the following function numbers.
Function ”hardware limit switch start” ––> function number 28
Function ”hardware limit switch, end” ––> function number 29
––> Refer to Chapter 5.6.2
When traversing to a hardware limit switch, the associated input signal
is set and the following response is automatically initiated:
The axis is braked down to the maximum velocity set using P28
(maximum velocity).
The following fault is signaled:
– Fault 706/707 software limit switch, start/end
– Supplementary info 911 hardware limit switch, passed/reached
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SIMODRIVE POSMO A User Manual (POS1) – 08.03 Edition