Siemens MICROMASTER 440 - How to Remove I;O Card to Get at Switches

Issue 08/03
34 Quick Start Guide MICROMASTER 440
6SE6400-5GA00-0BP0
3.1 How to Remove I/O Card to Get At Switches
The 50/60Hz DIP switch is located underneath the I/O card on ALL frame sizes of MM440. In the top
right hand corner of the I/O board there is a clip that can be released using a flat bladed screwdriver.
Using the plastic bulge (over the relays on the I/O board), you can hold the I/O board and remove it
easily once the clip has been released.
See following illustrations for instructions on removing the I/O boards in the different frame sizes.
3.1.1 Frame Size A to Frame Size C
1 Remove SDP or
BOP by pressing
button.
2 Slide down
terminal cover
3 Use flat blade
screwdriver to
remove I/O board
50/60 Hz DIP
switch is on right.
Down = 50Hz,
Up = 60Hz
4 Move DIP switch
2(2) according to
nominal motor
frequency
DIP2(1) has
no function
Figure 3-1 Removing the I/O board on Frame Size A to Frame Size C MM440
NOTE
Example shown is Frame Size A; Frame Size B & Frame Size C are similar.
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