Mechanical Limit Switch Module - Siemens 6DR55 Series Manual

Setting the two limit values:
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2.6.6 Mechanical limit switch module

SIPART PS2 PA Manual
A5E00127926--05
11. Select the plates which already exist on the standard version of the
module cover from the set of plates enclosed. Stick the selected
plates according to the standard version to the mounted module
cover. In the case of the version which doesn't feature explosion
protection, stick the warning sign (figure 2) onto the side of the
ground plate opposite the typeplate.
12. Make the electrical connections.
NOTE
Connect a suitable display instrument such as the Initiator--Tester type
2/Ex made by Peperl+Fuchs to the terminals 41 and 42 or terminals 51
and 52 of the SIA module to be able to see the switching state of the
slot initiators.
1. Drive the actuator to the first desired mechanical position.
2. Adjust the top actuating disc (7.2) by hand until the output signal
on terminals 41 and 42 changes.
3. Drive the actuator to the second desired mechanical position.
4. Adjust the bottom actuating disc (7.3) by hand until the output si-
gnal on terminals 51 and 52 changes.
NOTE
If you turn the actuating disc beyond the switching point up to the next
switching point, you can set a high-low or a low-high change.
To avoid the actuating discs being accidentally adjusted during opera-
ting, they are relatively sluggish. The following remedy might be of help
if you are having trouble with the adjustment: open and close the ac-
tuator several times while holding the actuating discs. This temporarily
reduces the friction. This allows an easier and finer adjustment.
The mechanical limit switch module contains the following:
A binary output for the output of a group error message)
S
Two switches for signaling two limit values that can be set mechani-
S
cally. These two switches are electrically independent from the rest
of the electronic system
Design and method of operation
39