Advertisement
3.5.2 Waterproof Motor Connections
The waterproof motors are provided with NPT (National Pipe Tapered Threads) for easy
connection to waterproof conduit fittings. The motor power wiring can be either a cable
assembly or discrete wires. Shielded motor power cables are highly recommended for
best system performance and for minimum EMI radiation from the high frequency
switching of the amplifier. Emerson EMC has shielded power cable available in bulk
under part number HPS-XXX (XXX is the length in feet). If a shielded motor power cable
is used, the shield should be connected to ground at both ends of the cable. If discrete
motor power wires are used, the power wires should be twisted or braided together but
not twisted with the ground wire. All wiring must be done with industrial grade insulated
stranded wire capable of withstanding the environmental conditions of the application.
See Table 3-C for recommended motor power and ground wire gauge sizes.
3.5.3 Resolver Wiring
The resolver cable must be comprised of twisted and shielded pair with an overall
braided shield. The resolver cable conductors should be 18 to 24 gauge. The use of
larger gauge wire will prematurely fatigue the terminals and make installation difficult.
Emerson EMC has resolver cabling available in bulk for ease of installation (PN
250224-09). The resolver shield should be connected only at the controller (excitation)
end of the cable.
Table 3-C – Power wire recommendations
Motor
DX-208
DX-316
DX-340
DX-455
DX-490
DX-4120
Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com
Minimum Wire Size
20 AWG
20 AWG
18 AWG
18 AWG
16 AWG
16 AWG
Recommended Wire Type
300V, 105° C
300V, 105° C
300V, 105° C
300V, 105° C
300V, 105° C
300V, 105° C
Section 3– Page 10
Advertisement
