Hitachi HIDIC MICRO-EH Applications Manual page 247

Securing the unit
DIN rail attachment mounting levers
Removing the unit from the DIN rail
2]
Chapter 10 PLC Installation, Mounting, Wiring
Secure the unit by installing DIN rail fixing brackets
from both sides. (The product may move out of place
if not secured with the fixing brackets.)
While lowering the DIN rail attachment mounting
lever 1], lift the unit upward to remove as shown by
2].
DIN rail attachment mounting levers
1]
10-2