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Table 16 — MS/TP Wiring Recommendations
LEGEND
Table 17 — Open System Wiring Specifications and Recommended Vendors
LEGEND
SPECIFICATION
RECOMMMENDATION
Cable
Single twisted pair, low capacitance, CL2P, 22 AWG (7x30), TC foam FEP, plenum rated cable
Conductor
22 or 24 AWG stranded copper (tin plated)
Insulation
Foamed FEP 0.015 in. (0.381 mm) wall 0.060 in. (1.524 mm) O.D.
Color Code
Black/White
Twist Lay
2 in. (50.8 mm) lay on pair 6 twists/foot (20 twists/meter) nominal
Shielding
Aluminum/Mylar shield with 24 AWG TC drain wire
Jacket
SmokeGard Jacket (SmokeGard PVC) 0.021 in. (0.5334 mm) wall 0.175 in. (4.445 mm) O.D.
Halar Jacket (E-CTFE) 0.010 in. (0.254 mm) wall 0.144 in. (3.6576 mm) O.D.
DC Resistance
15.2 Ohms/1000 feet (50 Ohms/km) nominal
Capacitance
12.5 pF/ft (41 pF/meter) nominal conductor to conductor
Characteristic Impedance
100 Ohms nominal
Weight
12 lb/1000 feet (17.9 kg/km)
UL Temperature Rating
SmokeGard 167°F (75°C), Halar -40 to 302°F (-40 to 150°C)
Voltage
300 Vac, power limited
Listing
UL: NEC CL2P, or better
Fig. 65 — BT485 Terminator Installation
AWG
—
American Wire Gage
CL2P
—
Class 2 Plenum Cable
DC
—
Direct Current
FEP
—
Fluorinated Ethylene Polymer
NEC
—
National Electrical Code
O.D.
—
Outside Diameter
TC
—
Tinned Copper
UL
—
Underwriters Laboratories
WIRING SPECIFICATIONS
RECOMMENDED VENDORS AND PART NUMBERS
Wire Type
Description
Connect Air
International
Belden
RMCORP
Contractors
Wire and Cable
MS/TP
Network (RS-485)
22 AWG, single twisted shielded pair, low capacitance, CL2P,
TC foam FEP, plenum rated. See MS/TP Installation Guide for
specifications.
W221P-22227
—
25160PV
CLP0520LC
24 AWG, single twisted shielded pair, low capacitance, CL2P,
TC foam FEP, plenum rated. See MS/TP Installation Guide
for specifications.
W241P-2000F
82841
25120-OR
—
Rnet
4 conductor, unshielded, CMP, 18 AWG, plenum rated.
W184C-2099BLB
6302UE
21450
CLP0442
AWG
—
American Wire Gage
CL2P
—
Class 2 Plenum Cable
CMP
—
Communications Plenum Rated
FEP
—
Fluorinated Ethylene Polymer
TC
—
Tinned Copper
Содержание MINIMUM LOAD CONTROL ACCESSORY 30RB060-390
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