SECTION 5: COMMUNICATIONS

5.5 Communications Between Multiple ROBERTS GORDON® ULTRAVAC™ Controllers

If more than one ROBERTS GORDON® ULTRA- VAC™ Controller is installed in a building, the controllers’ RS-485 communications must be wired in series. See Page 25, Figure 18. Connect the RS-485 terminal on controller #1 to the RS-485 terminal on controller #2 and so on in a daisy chain fashion. For communication cable requirements, See Page 12, Section 3.3.5

From a PC, by dialing into the modem on controller #1 or by connecting to controller #1 via RS-485 converter or TCP/IP communication module, the

system status and settings can be viewed for any of the controllers on the network.

The control board identification dip switch must be set on each ROBERTS GORDON® ULTRAVAC™ Controller. See Page 25, Figure 18 for dip switch settings. Contact Roberts-Gordon or your ROBERTS GORDON® independent distributor, if more than 20 controllers are connected.

FIGURE 18: Communications Between Multiple Controllers

Central Controller

(controller #1)

RS 485

Satellite Controller

(controller #2)

Satellite Controller

(controller #3)

To Additional Controllers

NC

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

-

8

+

 

-

7

+

 

-

6

+ - +

UNIVERSAL 5

-

INPUTS 4

 

NC

 

C

 

NO

 

NC

 

C

 

NO

 

NC

 

C

 

NO

 

NC

 

C

 

NO

24VAC

L2 L1

 

PWR

RS232 DIRECT

OUT IN

 

G

AUX

+32 +5

 

G

Wiring

To RJ11

connection on

TCP/IP

Module

(optional)

Ground

NC

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

-

8

+

 

-

7

+

 

-

6

+ - +

UNIVERSAL 5

-

INPUTS 4

 

NC

 

C

 

NO

 

NC

 

C

 

NO

 

NC

 

C

 

NO

 

NC

 

C

 

NO

24VAC

L2 L1

 

PWR

RS232 DIRECT

OUT IN

 

G

AUX

+32 +5

 

G

NC

C

NO

NC

C

NO

NC

C

NO

NC

C

NO

-

8

+

 

-

7

+

 

-

6

+ - +

UNIVERSAL 5

+ -

INPUTS 4

 

NC

 

C

 

NO

 

NC

 

C

 

NO

 

NC

 

C

 

NO

 

NC

 

C

 

NO

24VAC

L2 L1

 

PWR

RS232 DIRECT

OUT IN

 

G

AUX

+32 +5

 

G

Join Shields - Do Not Ground

Dedicated

Outside

Phone Line

(optional)

℡

 

+

 

 

-

 

 

3

 

+

 

 

-

 

 

2

 

+

 

 

-

 

 

1

 

+

 

OFF ON

OUT IN

CPU

ADDRESS

RESET

10VDC

499 OHM

 

 

OH

 

 

 

 

CD

 

 

 

 

RI

POWER

 

G

 

 

 

 

G

 

 

 

 

 

 

RS485

OUT

+-REF

 

 

 

 

COMM

IN

-REF

 

 

 

 

+

 

 

 

 

 

 

 

4

-

 

 

 

+

 

 

 

 

 

 

METER

3

+ -

 

 

INPUTS

2

+ -

 

 

 

1

-

 

 

 

+

 

 

 

 

 

 

 

 

 

 

Shield

Wiring

to RS 485 Converter at PC (optional)

 

+

 

 

-

 

 

3

 

+

 

 

-

 

 

2

 

+

 

 

-

 

 

1

 

+

 

OFF ON

OUT IN

CPU

ADDRESS

RESET

10VDC

499 OHM

 

 

OH

 

 

 

 

CD

 

 

 

 

RI

 

POWER

 

G

 

 

 

G

 

 

 

 

 

RS485

OUT

+-REF

 

COMM

IN

-REF

 

 

 

+

 

 

 

 

 

 

4

-

 

 

+

 

 

 

 

METER

3

+ -

 

INPUTS

2

+ -

 

 

1

-

 

 

+

 

 

 

 

 

 

 

 

 

 

 

Join Shields - Do Not Ground

 

-

 

3

 

+

 

-

 

2

 

+

 

-

 

1

 

+

OFF ON

OUT IN

10VDC

499 OHM

CPU

ADDRESS

RESET

 

 

OH

 

 

CD

 

 

RI

POWER

 

G

 

 

G

RS485

OUT

+-REF

COMM

IN

-REF

 

 

+

 

4

-

 

+

 

 

METER

3

+ -

INPUTS

2

+ -

 

1

-

 

+

 

 

1 2 3 4 5 6 7 8

Modem

Chip

Dip Switch #1

Set to ON (controller address #1)

1 2 3 4 5 6 7 8

Dip Switch #2

Set to ON (controller address #2)

1 2 3 4 5 6 7 8

Dip Switch

#1 and #2 Set to ON (controller address #3)

 

 

 

 

 

 

Controller

Dip

Switch Order

(1,2,3,4,5,6,7,8)

 

Number

 

Values (1=ON, 0=OFF)

 

 

 

1 (Central Controller)

10000000

 

 

 

 

2

01000000

 

 

 

 

3

11000000

 

 

 

 

4

00100000

 

 

 

 

5

10100000

 

 

 

 

6

01100000

 

 

 

 

7

11100000

 

 

 

 

8

00010000

 

 

 

 

9

10010000

 

 

 

 

10

01010000

 

 

 

 

 

 

 

 

 

 

 

Controller

 

Dip Switch

Order (1,2,3,4,5,6,7,8)

Number

Values (1=ON, 0=OFF)

 

 

 

11

 

11010000

 

 

 

12

 

00110000

 

 

 

13

 

10110000

 

 

 

14

 

01110000

 

 

 

15

 

11110000

 

 

 

16

 

00001000

 

 

 

17

 

10001000

 

 

 

18

 

01001000

 

 

 

19

 

11001000

 

 

 

20

 

00101000

 

 

 

 

25

Page 30 Page 32
Page 31
Image 31
Roberts Gorden NEMA 4 installation manual Controller, Switch Order, Number Values 1=ON, 0=OFF, Order 1,2,3,4,5,6,7,8
Page 30 Page 32

NEMA 4 specifications

The Roberts Gordon NEMA 4 is a leading example of industrial heating technology, specifically designed for demanding environments. Known for its ruggedness and efficiency, it meets the needs of various industries, including manufacturing, warehousing, and food processing. The robust design ensures that it can operate efficiently in harsh conditions, making it a popular choice for facilities where moisture, dust, and other contaminants are common.

One of the standout features of the Roberts Gordon NEMA 4 is its weatherproof and dust-tight enclosure, which adheres to the NEMA 4 classification. This means that the unit can withstand water splashes and rain, making it suitable for outdoor installations or areas where water exposure is likely. The housing is constructed from durable materials that resist corrosion, ensuring longevity and reliability.

In terms of technology, the Roberts Gordon NEMA 4 utilizes advanced infrared heating, which provides direct and efficient heat transfer. This type of heating warms objects and surfaces rather than the surrounding air, allowing for faster heat-up times and enhanced energy efficiency. The units are equipped with high-output infrared emitters, which are designed to maximize radiant heat output while minimizing energy consumption.

The operational characteristics of the Roberts Gordon NEMA 4 are also noteworthy. The units are designed to be user-friendly, featuring intuitive controls that allow for easy temperature adjustments and monitoring. Furthermore, they come equipped with automatic safety features, including over-temperature protection and fail-safe shutdown mechanisms, which enhance operational safety.

Another advantage of the Roberts Gordon NEMA 4 is its versatility. It can be configured for various applications, including ceiling-mounted installations or wall-mounted setups, depending on the specific heating needs of a facility. This adaptability allows for efficient space utilization in warehouses and production areas.

The energy efficiency of the Roberts Gordon NEMA 4 translates into cost savings for businesses. By providing targeted heating where it is needed most, the units help reduce overall energy expenditures. Additionally, the longevity of the unit minimizes the frequency of replacements, contributing to long-term value.

In summary, the Roberts Gordon NEMA 4 is a highly effective industrial heating solution characterized by its robust design, advanced infrared technology, versatility, and energy efficiency. It is well-suited for challenging environments and has been embraced by industries that demand reliable and efficient heating solutions.
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