Guidelines
The 171 CBU 78090, 171 CBU 98090 and 171 CBU 98091 processor and I/O base assembly can be mounted either on a DIN rail or on a panel. The processors are designed as open equipment per IEC 1131-2, 1.4.20. Install open equipment in industry-standard enclosures, and restrict access to authorized personnel.
Mounting on a DIN Rail
The numbers in the following illustration refer to the steps in the procedure below.
The processor assemblies are mounted on a DIN rail in the same manner as other TSX Momentum assembles, as follows:
Step |
Action |
|---|---|
1 |
Hook the plastic tabs on the back of the device onto the DIN rail and swing the module down to rest against the rail. |
2 |
Push the locking tab upward to hold the device in place. |
Mounting on a Panel
To mount the processor assemblies on a panel or wall, you need to obtain 2 mounting screws for each unit. The body of the screws should be 4 mm (0.16 in) in diameter and at least 25 mm (0.97 in.) long. Confirm that the head of the screw does not exceed 8 mm (0.31 in) in diameter.
1 4 x 25 mm (0.16 x 0.99 in.) mounting screw