Rs-485 communications, Wrong communications wiring, Wcc iii technical guide 10-6 – WattMaster WM-WCC3-TGD-01B User Manual
Page 458
10. RS-485 COMMUNICATIONS
WCC III Technical Guide
10-6
Wiring of the WCC III RS-485 communications loop as represented
in Figure 10-5 is not recommend for the following reasons:
1. The use of “Wire Nuts” to connect the communications wire at
a central hub (the 4x4 handy box) and inside of a SAT III enclosure
is not a good idea. The connections will oxidize over time and the
resistance of the “Wire-Nutted” connections will increase over
time. Generally speaking, the use of “Wire Nuts” can and will
cause a problem with the WCC III communication loop at some
point. Also, tugging or pulling on the WCC III communications
wiring during troubleshooting or during routine maintenance can
and generally will cause these “Wire Nuts” connections to break
apart.
8
7
S AT ADDRES S
2
1
4
8
A 3 WIREROOM S ENS OR WILLNOT
REQUIREA LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
W attM as ter Co nt ro ls I nc.
BIN ARY
INPUTS
BIN ARY
INPUTS
L 8
ON OFF
1 28
32
1 6
64
L 4
L 3
L 2
L 1
L 6
L 5
L 7
L 11
L 12
ON OFF
L 10
L 9
ON OFF
L 15
L 16
L 14
L 13
C
H
4
3
5
6
2
1
LOCA LS ET
STA TUS 2
STA TUS 3
STA TUS 1
HSS XMIT
L O CAL SE T
L O CA L S ET DI SABL E
BA T T ON/ OFF
P UL SE I NPUT
O PT IO N1
T E ST
O PT IO N3
O PT IO N2
ON OFF
S TA TUS
HSS REC
S AT XMIT
S AT REC
ANAL OG INP UT
JUM P E R SE LE CT ION
A 2 WIREROOM S ENS OR WILLREQUIRE
A 30 0 OHM LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
A 4 TO2 0 mA SENS OR WILL REQUIREA
5 0 OHM LO AD RES ISTOR WHEN SETF OR
A 1 VOLTINP UT, ORA 25 0 OHMLOAD
RESIS TOR WHEN S ETF ORA 5 VOLTINP UT.
CURRE NT
INP UT
T HERM IS TOR
INP UT
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
0 -10 V
THERM
0 T O 10V
INP UT
0 T O 5V
INP UT
0 T O 1V
INP UT
0 -10 V
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
THERM
0 -1V
0 -5V
0 -10 V
THERM
PROGRAMM ABLE CONTROLLER
SAT III
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
D
8
7
S AT ADDRES S
2
1
4
8
A 3 WIREROOM S ENS OR WILLNOT
REQUIREA LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
W attM as ter Co nt ro ls I nc.
BIN ARY
INPUTS
BIN ARY
INPUTS
L 8
ON OFF
1 28
32
1 6
64
L 4
L 3
L 2
L 1
L 6
L 5
L 7
L 11
L 12
ON OFF
L 10
L 9
ON OFF
L 15
L 16
L 14
L 13
C
H
4
3
5
6
2
1
LOCA LS ET
STA TUS 2
STA TUS 3
STA TUS 1
HSS XMIT
L O CAL SE T
L O CA L S ET DI SABL E
BA T T ON/ OFF
P UL SE I NPUT
O PT IO N1
T E ST
O PT IO N3
O PT IO N2
ON OFF
S TA TUS
HSS REC
S AT XMIT
S AT REC
ANAL OG INP UT
JUM P E R SE LE CT ION
A 2 WIREROOM S ENS OR WILLREQUIRE
A 30 0 OHM LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
A 4 TO2 0 mA SENS OR WILL REQUIREA
5 0 OHM LO AD RES ISTOR WHEN SETF OR
A 1 VOLTINP UT, ORA 25 0 OHMLOAD
RESIS TOR WHEN S ETF ORA 5 VOLTINP UT.
CURRE NT
INP UT
T HERM IS TOR
INP UT
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
0 -10 V
THERM
0 T O 10V
INP UT
0 T O 5V
INP UT
0 T O 1V
INP UT
0 -10 V
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
THERM
0 -1V
0 -5V
0 -10 V
THERM
PROGRAMM ABLE CONTROLLER
SAT III
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
D
8
7
S AT ADDRES S
2
1
4
8
A 3 WIREROOM S ENS OR WILLNOT
REQUIREA LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
W attM as ter Co nt ro ls I nc.
BIN ARY
INPUTS
BIN ARY
INPUTS
L 8
ON OFF
1 28
32
1 6
64
L 4
L 3
L 2
L 1
L 6
L 5
L 7
L 11
L 12
ON OFF
L 10
L 9
ON OFF
L 15
L 16
L 14
L 13
C
H
4
3
5
6
2
1
LOCA LS ET
STA TUS 2
STA TUS 3
STA TUS 1
HSS XMIT
L O CAL SE T
L O CA L S ET DI SABL E
BA T T ON/ OFF
P UL SE I NPUT
O PT IO N1
T E ST
O PT IO N3
O PT IO N2
ON OFF
S TA TUS
HSS REC
S AT XMIT
S AT REC
ANAL OG INP UT
JUM P E R SE LE CT ION
A 2 WIREROOM S ENS OR WILLREQUIRE
A 30 0 OHM LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
A 4 TO2 0 mA SENS OR WILL REQUIREA
5 0 OHM LO AD RES ISTOR WHEN SETF OR
A 1 VOLTINP UT, ORA 25 0 OHMLOAD
RESIS TOR WHEN S ETF ORA 5 VOLTINP UT.
CURRE NT
INP UT
T HERM IS TOR
INP UT
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
0 -10 V
THERM
0 T O 10V
INP UT
0 T O 5V
INP UT
0 T O 1V
INP UT
0 -10 V
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
THERM
0 -1V
0 -5V
0 -10 V
THERM
PROGRAMM ABLE CONTROLLER
SAT III
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
D
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
D
8
7
SA T A DDRES S
2
1
4
8
A 3 WIREROOM S ENS ORWILLNOT
REQUIREA LOA DRESISTORWHEN SET
F ORA 1 VOLTINP UT.
W at tM as ter Co ntr ols I nc.
BIN ARY
INPUTS
BIN ARY
INPUTS
L 8
ON OFF
12 8
32
16
64
L 4
L 3
L 2
L 1
L 6
L 5
L 7
L 11
L 12
ON OFF
L 10
L 9
ON OFF
L 15
L 16
L 14
L 13
C
H
4
3
5
6
2
1
LO CAL SET
STATUS 2
STATUS 3
STATUS 1
HSS XMIT
L OCAL SE T
L OCA L S ET DI SABL E
BAT T ON / OFF
P UL SE IN PUT
O PT ION 1
T E ST
O PT ION 3
O PT ION 2
ON OFF
S TA TUS
HSS REC
S AT XMIT
S AT REC
ANAL OG INP UT
J UM PE R S E LE CT ION
A 2 WIREROOM S ENS ORWILLREQ UIRE
A 30 0 OHM LOA DRESISTORWHENSET
F ORA 1 VOLTINP UT.
A 4 TO2 0 mA SENS ORWILLREQUIREA
5 0 OHM LOAD RES ISTORWHEN SETFOR
A 1 VOLTINP UT,O RA 25 0 OHMLOAD
RESISTOR WHEN S ETF ORA 5 VOLTINP UT.
CU RRE NT
I NPUT
T H ERM IS TOR
I NPUT
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
0 -10 V
THERM
0 T O1 0V
I NPUT
0 T O5 V
I NPUT
0 T O1 V
I NPUT
0 -10 V
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
THERM
0 -1V
0 -5V
0 -10 V
THERM
P ROGRAMM ABLE CONTROLLER
SAT III
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
BASEMENT
1st Floor
2nd Floor
8
7
S AT ADD RE SS
2
1
4
8
A 3 WIRE RO OM S ENSOR WILLNOT
R EQUIRE ALOAD RESIS TOR WHENSET
F OR A1 V OLTINPUT.
Wat tM as ter Co ntr ols I nc.
BINARY
I NPUTS
BINARY
I NPUTS
L8
O N OF F
128
32
16
64
L4
L3
L2
L1
L6
L5
L7
L11
L12
O N OF F
L10
L9
O N OF F
L15
L16
L14
L13
C
H
4
3
5
6
2
1
LOCAL SET
STATUS 2
STATUS 3
STATUS 1
HS S X MIT
L OCAL S ET
L OCA L S E T DIS ABL E
BAT T ON/ OFF
PUL S E I NPUT
OPT I ON 1
TE ST
OPT I ON 3
OPT I ON 2
O N OF F
S TA TUS
HSS REC
SA T XMIT
SAT REC
ANA L OG INP UT
J UM PE R SE L E CT ION
A 2 WIRE RO OM S ENSOR WILLR EQUIRE
A 3 00 OHM LOAD RESIS TOR WHENS ET
F OR A1 V OLTINPUT.
A4 TO 20 mAS ENS ORWILLREQUIREA
5 0 OHM LOADRES IS TOR WHENSETFOR
A1 VOLT INPU T,O RA 25 0 OHMLOAD
RES ISTORWHEN S ETF ORA 5 VOLTINPUT.
CURRE NT
I NPUT
T HE RM IS TOR
I NPUT
0 -1 V
0 -5 V
0 -1 0V
THERM
0 -1 V
0 -5 V
0 -1 0V
THERM
0 TO 1 0V
I NPUT
0 TO 5 V
I NPUT
0 T O 1V
I NPUT
0 -1 0V
0 -1 V
0 -5 V
0 -1 0V
THERM
0 -1 V
0 -5 V
THERM
0 -1 V
0 -5 V
0 -1 0V
THERM
PROGRAM MABL E CONTROLLER
SAT III
100VA
TRANSFORMER
SWITCH
DISCONNECT
8
7
S AT ADD RE SS
2
1
4
8
A 3 WIRE RO OM S ENSOR WILLNOT
R EQUIRE ALOAD RESIS TOR WHENSET
F OR A1 V OLTINPUT.
Wat tM as ter Co ntr ols I nc.
BINARY
I NPUTS
BINARY
I NPUTS
L8
O N OF F
128
32
16
64
L4
L3
L2
L1
L6
L5
L7
L11
L12
O N OF F
L10
L9
O N OF F
L15
L16
L14
L13
C
H
4
3
5
6
2
1
LOCAL SET
STATUS 2
STATUS 3
STATUS 1
HS S X MIT
L OCAL S ET
L OCA L S E T DIS ABL E
BAT T ON/ OFF
PUL S E I NPUT
OPT I ON 1
TE ST
OPT I ON 3
OPT I ON 2
O N OF F
S TA TUS
HSS REC
SA T XMIT
SAT REC
ANA L OG INP UT
J UM PE R SE L E CT ION
A 2 WIRE RO OM S ENSOR WILLR EQUIRE
A 3 00 OHM LOAD RESIS TOR WHENS ET
F OR A1 V OLTINPUT.
A4 TO 20 mAS ENS ORWILLREQUIREA
5 0 OHM LOADRES IS TOR WHENSETFOR
A1 VOLT INPU T,O RA 25 0 OHMLOAD
RES ISTORWHEN S ETF ORA 5 VOLTINPUT.
CURRE NT
I NPUT
T HE RM IS TOR
I NPUT
0 -1 V
0 -5 V
0 -1 0V
THERM
0 -1 V
0 -5 V
0 -1 0V
THERM
0 TO 1 0V
I NPUT
0 TO 5 V
I NPUT
0 T O 1V
I NPUT
0 -1 0V
0 -1 V
0 -5 V
0 -1 0V
THERM
0 -1 V
0 -5 V
THERM
0 -1 V
0 -5 V
0 -1 0V
THERM
PROGRAM MABL E CONTROLLER
SAT III
INTER PANEL
100VA
TRANSFORMER
8
7
S AT ADD RE SS
2
1
4
8
A 3 WIREROOM S ENS OR WILLNOT
REQUIREA LOADRESISTOR WHENSET
F ORA 1 VOLTIN PUT.
WattM as ter Co ntro ls Inc.
BINARY
INP UTS
BINARY
INP UTS
L8
O N OFF
128
32
16
64
L4
L3
L2
L1
L6
L5
L7
L 11
L 12
O N OFF
L 10
L 9
O N OFF
L 15
L 16
L 14
L 13
C
H
4
3
5
6
2
1
LO CAL SET
STA TUS 2
STA TUS 3
S TATU S 1
H SS XMIT
L OCAL SET
L OCAL SE T DIS ABLE
BAT T ON /OF F
PU LS E I NPUT
OP TI ON 1
TE ST
OP TI ON 3
OP TI ON 2
O N OFF
STATUS
HSS REC
S AT XMIT
S AT REC
A NAL OG I NPUT
J UM PE R SE L E CTI ON
A 2 WIREROOM S ENS OR WILLREQUIRE
A 3 00 OHM LOADRESISTOR WHENSET
F ORA 1 VOLTIN PUT.
A4 TO 20 mA SENS OR WILLREQUIREA
50 OHM LOADR ES IS TOR WHENS ETFOR
A1 V OLTINPUT,OR A 25 0 OHM LOAD
RES IS TO RWH EN SETF OR A 5 VOLT INPUT.
CURREN T
I NPUT
T HE RMI ST OR
I NPUT
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
0 -10 V
THERM
0 TO 10V
I NPUT
0 TO 5V
I NPUT
0 T O 1V
I NPUT
0 -10 V
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
THERM
0 -1V
0 -5V
0 -10 V
THERM
PROGRAMM ABLE CONTROLLER
SAT III
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
8
7
S AT ADDRES S
2
1
4
8
A 3 WIREROOM S ENS OR WILLNOT
REQUIREA LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
W attM as ter Co nt ro ls I nc.
BIN ARY
INPUTS
BIN ARY
INPUTS
L 8
ON OFF
1 28
32
1 6
64
L 4
L 3
L 2
L 1
L 6
L 5
L 7
L 11
L 12
ON OFF
L 10
L 9
ON OFF
L 15
L 16
L 14
L 13
C
H
4
3
5
6
2
1
LOCA LS ET
STA TUS 2
STA TUS 3
STA TUS 1
HSS XMIT
L O CAL SE T
L O CA L S ET DI SABL E
BA T T ON/ OFF
P UL SE I NPUT
O PT IO N1
T E ST
O PT IO N3
O PT IO N2
ON OFF
S TA TUS
HSS REC
S AT XMIT
S AT REC
ANAL OG INP UT
JUM P E R SE LE CT ION
A 2 WIREROOM S ENS OR WILLREQUIRE
A 30 0 OHM LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
A 4 TO2 0 mA SENS OR WILL REQUIREA
5 0 OHM LO AD RES ISTOR WHEN SETF OR
A 1 VOLTINP UT, ORA 25 0 OHMLOAD
RESIS TOR WHEN S ETF ORA 5 VOLTINP UT.
CURRE NT
INP UT
T HERM IS TOR
INP UT
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
0 -10 V
THERM
0 T O 10V
INP UT
0 T O 5V
INP UT
0 T O 1V
INP UT
0 -10 V
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
THERM
0 -1V
0 -5V
0 -10 V
THERM
PROGRAMM ABLE CONTROLLER
SAT III
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
3rd Floor
8
7
S AT ADDRES S
2
1
4
8
A 3 WIREROOM S ENS OR WILLNOT
REQUIREA LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
W attM as ter Co nt ro ls I nc.
BIN ARY
INPUTS
BIN ARY
INPUTS
L 8
ON OFF
1 28
32
1 6
64
L 4
L 3
L 2
L 1
L 6
L 5
L 7
L 11
L 12
ON OFF
L 10
L 9
ON OFF
L 15
L 16
L 14
L 13
C
H
4
3
5
6
2
1
LOCA LS ET
STA TUS 2
STA TUS 3
STA TUS 1
HSS XMIT
L O CAL SE T
L O CA L S ET DI SABL E
BA T T ON/ OFF
P UL SE I NPUT
O PT IO N1
T E ST
O PT IO N3
O PT IO N2
ON OFF
S TA TUS
HSS REC
S AT XMIT
S AT REC
ANAL OG INP UT
JUM P E R SE LE CT ION
A 2 WIREROOM S ENS OR WILLREQUIRE
A 30 0 OHM LOADRESISTORWHENSET
F ORA 1 VOLTIN PUT.
A 4 TO2 0 mA SENS OR WILL REQUIREA
5 0 OHM LO AD RES ISTOR WHEN SETF OR
A 1 VOLTINP UT, ORA 25 0 OHMLOAD
RESIS TOR WHEN S ETF ORA 5 VOLTINP UT.
CURRE NT
INP UT
T HERM IS TOR
INP UT
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
0 -10 V
THERM
0 T O 10V
INP UT
0 T O 5V
INP UT
0 T O 1V
INP UT
0 -10 V
0 -1V
0 -5V
0 -10 V
THERM
0 -1V
0 -5V
THERM
0 -1V
0 -5V
0 -10 V
THERM
PROGRAMM ABLE CONTROLLER
SAT III
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
D
100VA
TRANSFORMER
SWITCH
DISCONNECT
INTER PANEL
D
4th Floor
4X4
HANDY BOX
WIRE
NUTS
WIRE
NUTS
TO
WCC III - MCD
SAT III IN A ENCLOSURE
SAT 3D IN A ENCLOSURE
2 - SAT III IN A DUAL ENCLOSURE
SAT III IN A ENCLOSURE
SAT 3D IN A ENCLOSURE
SAT III IN A ENCLOSURE
SAT 3D IN A ENCLOSURE
SAT III IN A ENCLOSURE
SAT III IN A ENCLOSURE
SAT 3D IN A ENCLOSURE
SAT 3D IN A ENCLOSURE
SAT III IN A ENCLOSURE
SAT III IN A ENCLOSURE
SAT 3D IN A ENCLOSURE
Figure 10-5: Typical WCC III System Communications Wiring – Not the recommended and preferred way
2. The haphazard way the WCC III communications wiring was
run in Figure 10-5 is also not recommended. In this example,
wiring was run from the 2nd fl oor to the 4th fl oor and then back
to the 2nd fl oor and then back to the 4th fl oor again. The WCC III
communications wiring should make sense and never jump fl oors
or go back down a fl oor and then go back up a fl oor. See Figure
10-6 which shows a diagram of how the WCC III communications
wiring should be run and to use for troubleshooting purposes.
3. A Power and Switchable RS-485 communication board
(PL102224) was not used on a fl oor-by-fl oor basis. Use of this
board will aid in initial startup and in future troubleshooting.
Wrong Communications Wiring