SDM-CD16AC 16 Channel AC/DC Controller
3
FIGURE 3-1. Connection block diagrams
4. Installation
•
The SDM-CD16AC must be installed in an enclosure that provides a
pollution degree 2 environment (normally, only nonconductive pollution;
however, a temporary conductivity caused by condensation may be
expected). All Campbell Scientific enclosures meet this requirement.
•
Use copper conductors only.
•
Wire Range: 30
−
14 AWG
•
Tightening Torque: 5
−
7 in/lb
•
Use minimum 60/75 °C wire.
•
Input power must be connected to a class 2 supply only. All Campbell
Scientific power supplies meet the class 2 supply requirements.
Cables connecting the terminals of the data logger and SDM
device should be kept as short as possible to minimize the
risk of corruption of the signals and damage from induced
surges. Where long cable runs (>3 m) are unavoidable and
the cables run outside, some extra protection may be
required for the SDM control terminals. Please contact
Campbell Scientific for further advice. When connecting
wires to the SDM signal terminals, please ensure they are
at ground potential before making the connection, by
touching them to the earth terminal.
For data logger connections, see TABLE
CAUTION
