Siemens SIPROTEC 7SD610 - Reassembly; Mounting; Panel Flush Mounting

3.1 Mounting and Connections
283
7SD610 Manual
C53000-G1176-C145-4
3.1.2.5 Reassembly
The assembly of the device is done in the following steps:
• Insert the modules carefully in the housing. The mounting locations are shown in
figure 3-3. For the model of the device designed for surface mounting, use the metal
lever to insert the C-CPU-2 board. The installation is easier with the lever.
• First insert the plug connectors of the ribbon cable on the input/output boards C-
I/O–11 and then on the processor board C-CPU-2. Do not bend any connector pins!
Don´t use force!
• Connect the plug connectors of the ribbon cable between the processor board C-
CPU-2 and the front panel to the front panel plug connector.
• Press plug connector interlocks together.
• Put on the front cover and screw it onto the housing.
• Put the covers back on.
• Re-fasten the interfaces on the rear of the device housing. This activity is not nec-
essary if the device is designed for surface mounting.
3.1.3 Mounting
3.1.3.1 Panel Flush Mounting
For 7SD610 (Picture 3-12) 4 covers and 4 holes exist.
• Remove the 4 covers at the corners of the front cover. Thus, 4 elongated holes are
revealed in the mounting bracket and can be accessed.
• Insert the device into the control panel section and tighten it with 4 screws. For di-
mensions refer to Section 4.17.
• Replace the 4 covers.
• Connect the earth on the rear plate of the device to the protective earth of the panel.
Use at least one M4 screw for the device earth. The cross-sectional area of the
earth wire must be equal to the cross-sectional area of any other control conductor
connected to the device. The cross-section of the earth wire must be at least
2.5 mm
2
.
• Connections are realized via the plug terminals or screw terminals on the rear side
of the device according to the circuit diagram.
For screw connections with forked lugs or direct connection, before inserting wires
the screws must be tightened so that the screw heads are flush with the outer edge
of the connection block.
A ring lug must be centred in the connection chamber, in such a way that the screw
thread fits in the hole of the lug.
The SIPROTEC 4 System Description has pertinent information regarding wire
size, lugs, bending radii, etc. Installation notes are also given in the brief reference
booklet attached to the device.
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