Rs-485 point-to-point typical wiring – Rockwell Automation 1408-EMxx PowerMonitor 1000 Unit User Manual

Page 22

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22 PowerMonitor 1000 Unit

Rockwell Automation Publication 1408-IN001E-EN-P - September 2013

RS-485 Point-to-point Typical Wiring

Terminals

Wire Range

(1)

(1) 75 °C Cu wire only, 1 to 2 conductors per terminal (sol-sol or str-str).

Tightening Torque

V1, V2, V3, VN, I1+ I2+, I3+, I1-, I2-,

I3-, S1, S2, SCOM, NC, CR, CF1, L1, L2, Y,

K, Z

0.32…4 mm

2

(22…14 AWG)

0.8 N•m (7 lb•in)

RS-485 Communication

0.32…4 mm

2

(22…14 AWG)

0.56 N•m (5 lb•in)

Nine-pin Null Modem Cable

(Female/Female)

To Computer

RS-485 Wiring:
2 /C Shielded Cable
Connect A to -, B to +
Connect shield at one end only

RS-485 to RS-232 Converter

Examples:

TERM

RS-232

A

B

COM

SHLD

CHS GND

CHS GND

DC NEUT

24V DC

+

-

SHLD

PowerMonitor 1000

RS-485

GRND

24V DC (by user)

*

*

* 150 W Terminating Resistor (if used)

0.32…4 mm

(22…14 AWG)

Allen-Bradley 1761-NET-AIC (shown)
B&B Electronics 485SD9TB

2

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