Varifan IC-610, User Manual

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2.3.2 Electrical Power 3 Phase, 208 VAC/Control Modules
Control modules which are connected to the IC-610
(VSM-2, CIP-1) require the same phase as the IC-610,
all other components can use a separate power source.
2.3.3 Electrical Cables.
All electrical cables must be installed according to
the local wiring code. Each control module must
be connected to the master control unit using a
two-wire low voltage cable. It is recommended to
use a shielded wire cable to interconnect the
different modules to the IC-610. The shielded
wire cable is very efficient to protect the IC-610
against any electromagnetic interference
generated by lightning or nearby operating
machinery. This principle applies especially when
the cable is longer than 3,5 meters (10 ft) and for
any probe extensions of the same length or
longer. See configuration document for wire and
cable gauges.
2.3.4 Electrical Grounding.
All cables shields should be connected to the
IC-610 power ground only, except for the cable
connected to a PC interface (SVPC-40), where
the shield should be connected as instructed in
the SVPC-40 manual.
Make sure that the IC-610 and both power lines of the
variable fan(s) are on the same phase. Otherwise the
control signal of the IC-610 will be too early or too late and
the fan will not rotate as expected.
CAUTION
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