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Watlow EZ-ZONE

PM Integrated Controller • 41 • Chapter 2 Install and Wire

Warning: Óç

Use National Electric (NEC) or other

country-specific standard wiring and

safety practices when wiring and

connecting this controller to a power

source and to electrical sensors or

peripheral devices. Failure to do so

may result in damage to equipment

and property, and/or injury or loss

of life.

Note:

Maximum wire size termination and

torque rating:

• 0.0507 to 3.30 mm

(30 to 12

AWG) single-wire termination or

two 1.31 mm

(16 AWG)

• 0.8 Nm (7.0 lb.-in.) torque

Note:

Adjacent terminals may be labeled

differently, depending on the model

number.

Note:

To prevent damage to the control-

ler, do not connect wires to unused

terminals.

Note:

Maintain electrical isolation between

analog input 1, digital input-outputs,

switched dc/open collector outputs

and process outputs to prevent

ground loops.

Note:

The control output common termi-

nal and the digital common terminal

are referenced to different voltages

and must remain isolated.

Note:

This Equipment is suitable for use in

CLASS I, DIVISION 2, Groups A, B,

C and D or Non-Hazardous locations

only. Temperature Code T4A

Warning:

Explosion Hazard - Dry contact clo-

sure Digital Inputs shall not be used

in Class I Division 2 Hazardous Loca-

tions unless switch used is approved

for this application.

Warning:

Explosion Hazard – Substitution of

component may impair suitability

for

CLASS I, DIVISION 2.

Warning:

Explosion Hazard - Do not discon-

nect while the circuit is live or

unless the area is known to be free

of ignitable concentrations of flam-

mable substances.

Connecting a Computer to PM Controls Using B&B 485 to USB Converter

Address 2

Address 1

Data Format

38,400 baud

8 data bits

no parity

1 start bit

1 stop bit

PC Software Protocol - Standard Bus

EZ-ZONE Congurator software

0847-0326-0000

USB

Port

Use twisted pair wires such as Cat 5 cabling. Do not route with power carrying

conductors. Daisy chain wire up to 16 EZ-ZONE devices.

Slot A

Slot B

Slot C

Slot A

Slot B

Slot C

Note:

Do not leave a USB to EIA-485 converter connected to Standard Bus with-

out power (i.e., disconnecting the USB end from the computer while leaving

the converter connected on Standard Bus). Disturbance on the Standard

Bus may occur.

Note:

When connecting the USB converter to the PC it is suggested that the La-

tency Timer be changed from the default of 16 msec to 1 msec. Failure to

make this change may cause communication loss between the PC running

ZE-ZONE Configurator software and the control.

To modify Latency Timer settings follow the steps below:

1. Navigate to Device Manager.

2. Double click on Ports.

3. Right click on the USB serial port in use and select Properties.

4. Click the tab labeled Port settings and then click the Advance button.