HEIDENHAIN MSE 1201 Guide D'utilisation page 21

Mounting a module
Notice
A power supply module must always be to the left of any modules it is
powering in the module chain. Once the maximum power consumption rating
of a power supply module is reached, install another power supply module into
the module chain.
To mount a module:
Verify all power switches are in the off position (if applicable) and power is removed
X X
from all power supply modules in the module chain
Align the bottom edge of the DIN rail with the bottom channel 16 of the module
X X
Gently apply upward pressure, depressing the DIN rail spring 15 and inserting the DIN
X X
rail into the bottom channel 16 of the module
While maintaining upward pressure, rotate the top of the module towards the DIN rail
X X
until the top channel 14 of the module is aligned above the DIN rail
Gently release the upward pressure, locking the module onto the DIN rail
X X
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Mounting a module
21