Hach-Lange SC 60 User Manual
Page 18
14
Installation
3.3.3 Wiring for Power at the Controller
DANGER
Explosion hazard. Do not connect or disconnect electrical
components or circuits to the equipment unless power has
been switched off or the area is known to be non-hazardous.
DANGER
Do not connect AC power to a sc60 24 VDC powered model.
The sc60 can be purchased as either an 100–230 VAC powered
model or a 24 VDC powered model. Follow the appropriate wiring
instructions as per the purchased model.
Important Note: A protective earth (PE) ground connection is
required by the sc60 for both 100–230 VAC and 24 VDC wiring
applications. Failure to connect a good PE ground connection can
result in shock hazards and poor performance due to
electromagnetic interferences. ALWAYS connect a good PE ground
to the sc60 terminal.
The controller can be wired for line power by hard-wiring in conduit
or wiring to a power cord. Regardless of the wire used, the
connections are made at the same terminals. A local disconnect
designed to meet local electrical code is required and must be
identified for all types of installation. See
Figure 13
and
Figure 14 on
page 17
for suggested local disconnect configurations.
1.
Obtain appropriate fittings with NEMA 4X/IP66 environmental
rating.
2.
Loosen the screws using a phillips-head screwdriver and open
the hinged controller cover.
3.
Remove the high-voltage barrier (see
Figure 9 on page 13
).
4.
Insert the wires through the strain relief fitting or conduit hub
located in the right-rear access hole in the bottom of the
enclosure. Tighten the strain relief if used, to secure the cord.
5.
Properly prepare each wire (
Figure 11
) and insert each wire
into the terminal according to
Table 2:
or
Table 3: on page 15
.
Tug gently after each insertion to ensure the connection is
secure.
6.
Seal any unused openings in the controller box with conduit
opening sealing plugs.
7.
Reinstall the high-voltage barrier and latch to secure.