Fig. 27 — BT485 Terminator Installation

 

Table 8 — MS/TP Wiring Recommendations

 

 

 

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

 

LEGEND

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

TO ADDRESS THE UPC OPEN CONTROLLER — The user must give the UPC Open controller an address that is unique on the BACnet network. Perform the following proce- dure to assign an address:

1.If the UPC Open controller is powered, pull the screw ter- minal connector from the controller's power terminals la- beled Gnd and HOT. The controller reads the address each time power is applied to it.

2.Using the rotary switches (see Fig. 25 and 28), set the controller's address. Set the Tens (10's) switch to the tens digit of the address, and set the Ones (1's) switch to the ones digit.

As an example in Fig. 28, if the controller’s address is 25, point the arrow on the Tens (10's) switch to 2 and the arrow on the Ones (1's) switch to 5.

9

0

1

 

8

 

2

10's

7

 

 

3

6

 

4

 

5

 

 

 

 

 

 

9

0

1

 

8

 

2

 

7

 

 

3

1's

6

 

4

 

5

 

 

 

 

 

 

Fig. 28 — Address Rotary Switches

BACNET DEVICE INSTANCE ADDRESS — The UPC Open controller also has a BACnet Device Instance address. This Device Instance MUST be unique for the complete BAC- net system in which the UPC Open controller is installed. The Device Instance is auto generated by default and is derived by

29

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Carrier 62E specifications MS/TP Wiring Recommendations, Specification Recommmendation, Nec

62E specifications

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