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V2 AC500 Hardware 1-18 System data AC500 / Issued: 05.2007
By wall mounting, the Terminal Unit is earthed through the screws. It is necessary that
• the screws have a conductive surface (e.g. steel zinc-plated or brass nickel-plated)
• the mounting plate is earthed
• the screws have a good electrical contact to the mounting plate
Mechanical dimensions AC500
2828
59 (2.32)
70.5 (2.78)
135 (5.31)
67.5 (2.66)
(1.10)(1.10)
95.5 (3.76)
(2.27)
57.7
(1.59)
40.3
4.9 (0.19)
TB511
123.5 (4.86)TB521
179.5 (7.07)TB541
28
(1.10)
28
(1.10)
135 mm
(5.31) inches
Dimensions:
Figure: Dimensions of the AC500 CPU Terminal Bases TB511, TB521 and TB541