L0520
RH0170.001
19/24
ABB SACE
SACE PR212
2.3.
Putting into service
2.3.1.
Assembly instructions
Assembly on standard 35 mm guide (DIN EN50022 type TS 35 x 15mm).
For the front removable connectors, use cables with wire cross-section between 0.5 and 2.5
mm
2
(AWG 22 ... 12).
Earthing of the metallic enclosure must be carried out by means of connection, with 4 mm
2
cross-section wire with eyelet terminal, to the special M4 screw located on the rear of the
enclosure itself.
Special earthing terminals are available on the front connectors, to connect the electronic
circuit to the installation earth. These terminals must not be connected to the earthing
screw of the metallic box.
Dielectric Resistance tests are not allowed on the inputs and outputs of the PR212/D-L
unit.
Although the PR212/D-L can be installed in the circuit-breaker compartment, it is, in any
case, good practice to place it in the instrument compartment of the switchboard. For
further information (positioning of the communication device, maximum distance from the
circuit-breaker ), please consult the documents mentioned in par.1.
2.3.2.
Connections
To carry out cabling of each terminal, closely follow the electrical application diagrams as well
as all the indications given in the documents mentioned in par.1.
Since the inputs and outputs are dedicated, cabling to the various terminals other than the one
indicated in the official ABB SACE electrical diagrams is not allowed.
2.3.3. Setting dip-switch
After cabling all the front connections correctly and the earthing connection on the rear, the
dip switches referring to the type of termination on the Internal Bus and External Bus (LON
Ò
)
in the top part of the PR212/D-L device must be set.
