Automated Logic ZN551 Teknik Talimatlar - Sayfa 5

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To address the ZN551

Wiring for communications

Wiring specifications

To wire the ZN551 for

communications

ZN551 Control Module • Rev. 3/17/2005

You can address the ZN551 before or after you wire the control module for

power.

If the ZN551 has been wired for power, pull the screw terminal connector

from the control module's power terminals labeled Gnd and 24 Vac. The

control module reads the address each time you apply power to it.

Using the rotary switches, set the control module's address to match the

Address in the control module's Device Properties dialog box in

SiteBuilder. Set the Tens (10's) switch to the tens digit of the address,

and set the Ones (1's) switch to the ones digit.

EXAMPLE If the control module's address is 35, point the arrow on the

Tens (10's) switch to 3 and the arrow on the Ones (1's) switch to 5.

10's

1's

The ZN551 communicates using BACnet on the following types of network

segments:

•

ARC156 communicating at 156 kbps

•

MS/TP communicating at 9600 bps, 19.2 kbps, 38.4 kbps, or 76.8 kbps

NOTE ARC156 is a unique implementation of the industry standard

ARCNET. For a summary of differences between ARCNET and ARC156, see

the ARC156 Wiring Technical Instructions (http://info.automatedlogic.com).

For...

Use...

ARC156

22 AWG, low-capacitance, twisted,

stranded, shielded copper wire*

MS/TP

A dedicated 22 AWG to 18 AWG

twisted pair wire (EIA-485)

* See the ARC156 Wiring Technical Instructions (http://info.automatedlogic.com).

Pull the screw terminal connector from the control module's power

terminals labeled Gnd and 24 Vac.

Check the communications wiring for shorts and grounds.

Connect the communications wiring to the control module's screw

terminals labeled Net +, Net -, and Shield.

NOTE Use the same polarity throughout the network segment.

Maximum Length

2000 feet (610 meters)

3000 feet (914.4 meters) for 9600

bps, 19.2 kbps, or 38.4 kbps

2000 feet (610 meters) for 76.8 kbps