Sierra INNOVA-MASS 241-VTP - Manual (Page 33)

Series 24-HP Instruction Manual Chapter 2 Installation
IM-24-HP 2-19
Wiring Connections
The NEMA 4X enclosure contains an integral wiring compartment with
one dual strip terminal block (located in the smaller end of the enclo-
sure). Two 3/4-inch female NPT conduit entries are available for sepa-
rate power and signal wiring. For all hazardous area installations, make
sure to use an agency-approved fitting at each conduit entry. If conduit
seals are used, they must be installed within 18 inches (457 mm) of the
enclosure.
Input Power Connections
To access the wiring terminal blocks, locate and loosen the small set
screw which locks the small enclosure cover in place. Unscrew the cov-
er to expose the terminal block.
AC Power Wiring
The AC power wire size must be 20 to 10 AWG with the wire stripped
1/2 inch (14 mm). The wire insulation temperature must meet or exceed
85°C (185°F). Connect 100 to 240 VAC (25 watts maximum) to the Hot
and Neutral terminals on the terminal block. Connect the ground wire to
the safety ground lug. Torque all connections to 4.43 to 5.31 in-lbs (0.5
to 0.6 Nm). Use a separate conduit entry for signal lines to reduce the
possibility of AC noise interference.
Figure 2-14. AC Power Connections
DC Power Wiring
The DC power wire size must be 20 to 10 AWG with the wire stripped
1/2 inch (14 mm). Connect 18 to 36 VDC (100 mA maximum current
draw) to the +Pwr and –Pwr terminals on the terminal block. Torque all
connections to 4.43 to 5.31 in-lbs (0.5 to 0.6 Nm).
Figure 2-15. DC Power Connections
Warning!
To avoid potential electric shock, follow
National Electric Code safety practices or
your local code when wiring this unit to a
power source and to peripheral devices.
Failure to do so could result in injury or
death. All AC power connections must be
in accordance with published CE direc-
tives. All wiring procedures must be per-
formed with the power off.
Caution!
The AC wire insulation tempera-
ture rating must meet or exceed
85°C (185°F).
DC Terminals
AC Terminals