Roberts Gorden NEMA 4 installation manual

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