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Installing 505 System Hardware SIMATIC 545/555/575 System Manual
3.3 Series 505 Bases
The 545/555 CPU is housed in a Series 505 base. A base has slots for the
power supply, the CPU or RBC, and the I/O modules. Four base models are
currently available; see Table 3-1.
Table 3-1 Series 505 Base Models
Model Number of I/O
Slots
Support for
Redundancy
Mounting
PPX:505–6504 4 No NEMA panel
PPX:505–6508 8 No NEMA panel
PPX:505–6511 11 Yes
1
NEMA panel or rack
PPX:505–6516 16 No NEMA panel or rack
1
The PPX:505–6511 base supports redundant power supplies and/or redundant RBCs. The
PPX:505–6660-A (or -B) and the PPX:505–6663 (or -A) power supplies can be used in either a
redundant or a non-redundant configuration. You do not have to use redundant RBCs with
dual power supplies; you can use a single RBC, or a single CPU.
A good grounding system is essential for proper operation of the system.
Follow the guidelines in Section 2.8 to ensure that the Series 505 base is
properly grounded.
Description
Grounding the
Controller Chassis
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