Sierra InnovaMass 240i Series, Инструкция по эксплуатации, Страница: 29 / 115

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DC Power Wiring
The DC power wire size must be 26 to 16 AWG with the wire stripped 1/4 inch (6 mm). Connect
24 VDC +/- 10% (0.4 amp load, maximum) to the terminals marked on the terminal block.
Connect the earth ground wire to the safety ground log. Torque all connections to 4.43 to 5.31 in-
lbs (0.5 to 0.6 Nm).
If conduit seals are used, they must be installed within 18 inches of the enclosure. See Figure
12.
Figure 12: DC Input Power Connections
Output Signal Wiring
You must use metal cable glands that provide cable screen clamping. The cable screen
should be connected to the gland and shielded at both ends over 360 degrees. The
shield should be terminated to an earth ground.
For all installations not using metal conduit, two ferrite beads should be added, one
on each end of the I/O cable. This is to maintain CE related EMI/RFI protection.
Good quality (highest impedance at 100MHz) broadband ferrites should be used; a
solid cylindrical ferrite (recommended) usually has better performance than a clamp
on ferrite. The ferrites should fit as tight as possible to the OD of your cable. See
Figure 14.
All wiring procedures must be performed with the power off.