Mitsubishi Electric Q26UD(E)HCPU User Manual page 78

(3) Installation and removal of on/from QA6B
(a) Installation of module on QA6B
Insert the two module fixing projections
into the module fixing hole (B) in the
base unit.
Mount the module into the base unit by
pushing it in the direction of the arrow.
Check if the hook of the module is
securely inserted in the module fixing
hole (A) in the base unit.
For use in an environment with particularly frequent vibrations and/or shock, secure the module to the base with screws.
Module fixing screw: M4 × 0.7 × 12mm (User-prepared)
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Module fixing hole (B)
Completed
Module fixing hole (A)
Base unit
Module
connector
Hook
Module
Two module
fixing
projections