Siemens APACS+ - EAM Installation; MODULRAC Mechanical Keying

SD39EAM-1r4 Installation
September 2005 2-17
1). Interconnect I/O Cable Assembly (P2 installed)
Connect P2 (Figure 2-7) to the “A” (J1) connector on the Marshalled Termination Assembly
(Figure 1-1). A keying pin projecting from the face of P2 ensures a correct mating. Press P2 firmly
onto J1 and torque
the securing screw on the top of P2’s connector shell to 50 inch-pounds
maximum.
2). Unterminated I/O Cable Assembly (P2 not installed)
Refer to Table 2-3 for color code identification and function of each unterminated wire. Refer to
user wiring diagrams to make the proper cable connections to the termination assembly.
6. Redundant EAMs only.
Connect the redundant Interconnect I/O Cable’s P2 connector to “B” (J2) of the Marshalled
Termination Assembly as described in the above step 5.
2.7 EAM Installation
Modules are shipped individually packaged in protective, sealed, static shielding bags. Refer to section
2.4 for module handling considerations.
Each MODULRAC slot and each module must be keyed to prevent accidental installation of a module
into an incompatible slot, which may impair system performance. Keying is highly recommended; see
Figure 2-8.
• Modules are keyed at the factory. The keying pattern is unique to each module type (e.g. ACM,
EAM, SDM). See Figure 2-8 for the EAM keying pattern.
• A MODULRAC installed in a cabinet by the factory is keyed at the factory. A user-installed
MODULRAC is keyed by the user according to the module type assigned to each slot. This keying
pattern complements the module’s keying pattern. Stop plugs are supplied with the MODULRAC.
• When adding a module to a MODULRAC, be sure to key the MODULRAC slot. Section 2.7.1
describes keying a MODULRAC slot. Section 2.7.2 describes installing the module in the
MODULRAC.
2.7.1 MODULRAC Mechanical Keying
1. Get the MODULRAC Keying Kit supplied with the MODULRAC.
2. Refer to Figure 2-8 and note the MODULRAC keying pattern. Also, locate the MODULRAC top
and bottom rails. Press the stop plugs into the holes identified by the solid dots.