© Munters AB, 2016 19
5 Installation
The following sections details the installation and wiring procedures.
CAUTION If any problem arises with the hardware, do not open the box. Contact an
authorized electrician.
5.1 Mains voltage connections
Connect the input power of the controller to one or more circuit breakers in the electrical enclose
(fuse box).
•
Single wire supply: Recommended for applications in which the controller's outputs are
connected to low power contactors (for example those shown in Figure 7). In this case one
18 AWG cable should be used for Phase and Neutral.
•
Multi wire supply: Recommended for high power applications in which the outputs supply
up to 5 Amp each. In this case a separate 18 AWG wires should be connected from each
circuit breaker in the electrical enclose (fuse box) to each output and to the variable speed
fan. All the wires (from the separate circuit breakers) are from the same single phase.
WARNING!
Multi wire supply! Up to nine independent mains input may be present in the SMART-
8C/3MD Controller. Put all appropriate circuit breakers in the OFF position before
servicing.
5.2 SMART-8C/3MD wiring
The following drawings detail the SMART-8C/3MD wiring.
WARNING!
Before wiring the unit, disconnect the power!
•
Figure 6: Board Layout
•
Figure 7: Wiring Diagram of Low Voltage Section
•
Figure 8: Wiring Diagram of Main Voltage Section and Protection
•
Figure 9: Farm Dairy Communication RS-232 Wiring Diagram
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