Manual No. 21-115527-017
Table of Contents
1
INTRODUCTION ........................................................................................................................................ 1
1.1
D
ESCRIPTION
........................................................................................................................................... 1
1.2
F
RONT
P
ANEL
LED I
NDICATORS
.............................................................................................................. 1
2
TRANSMISSION METHODS..................................................................................................................... 2
2.1
F
IBER
O
PTIC
T
RANSMISSION
..................................................................................................................... 2
2.2
W
IRE
T
RANSMISSION
............................................................................................................................... 2
2.2.1
RS-232 ............................................................................................................................................ 2
2.2.2
RS-485 ............................................................................................................................................ 3
3
COMMUNICATION PROTOCOLS .......................................................................................................... 4
4
INSTALLING THE COMMUNICATIONS MODULE IN MJ-X
L
CONTROL PANELS....................... 5
4.1
R
EMOVING THE
MJ-X
L
R
EAR
C
OVER
........................................................................................................ 5
4.2
M
OUNTING THE
C
OMMUNICATIONS
M
ODULE
............................................................................................ 6
4.3
S
ETTING THE
C
OMMUNICATIONS
M
ODULE
J
UMPERS
.................................................................................. 6
4.3.1
Fiber Optic Version ........................................................................................................................ 6
4.3.2
RS-232/485 Version ........................................................................................................................ 7
4.4
R
EPLACING THE
MJ-X
L
R
EAR
C
OVER
........................................................................................................ 8
4.5
M
OUNTING THE
C
OMMUNICATIONS
M
ODULE
L
ABEL
................................................................................. 8
5
INSTALLING THE COMMUNICATIONS MODULE IN MJ-X CONTROL PANELS ......................... 9
5.1
S
ETTING THE
C
OMMUNICATIONS
M
ODULE
J
UMPERS
.................................................................................. 9
5.1.1
Fiber Optic Version ........................................................................................................................ 9
5.1.2
RS-232/485 Version ...................................................................................................................... 10
5.2
M
OUNTING THE
C
OMMUNICATIONS
M
ODULE IN
MJ-X C
ONTROL
P
ANELS
................................................ 10
6
VERIFYING THE COMMUNICATIONS MODULE INSTALLATION ............................................... 14
6.1
P
ERFORMING THE
I
NITIAL
D
IAGNOSTIC
C
HECKOUT
................................................................................. 14
6.2
P
ERFORMING THE
L
OOPBACK
D
IAGNOSTIC
T
EST
..................................................................................... 14
7
CABLING THE COMMUNICATIONS MODULE TO THE POWER SYSTEM ................................. 15
7.1
F
IBER
O
PTIC
C
ABLE
T
YPE
...................................................................................................................... 15
7.1.1
Fiber Optic Cable Lengths ............................................................................................................ 15
7.1.2
Fiber Optic Connector .................................................................................................................. 16
7.1.3
Fiber Optic Connections ............................................................................................................... 16
7.2
RS-485 T
WISTED
-
PAIR
C
ABLE
................................................................................................................ 16
7.2.1
RS-485 Cable Type ....................................................................................................................... 16
7.2.2
RS-485 Cable Grounding .............................................................................................................. 17
7.2.3
RS-485 Connector......................................................................................................................... 17
7.2.4
RS-485 Cabling Considerations .................................................................................................... 18
7.3
RS-232 C
ONNECTIONS
.......................................................................................................................... 20
7.3.1
RS-232 Multi-drop Wiring............................................................................................................. 21
7.4
RS-232/485 C
ONNECTIONS
.................................................................................................................... 21
7.5
C
OMMUNICATIONS
M
ODULE
C
ONFIGURATION
........................................................................................ 22
7.5.1
Communications Menu Item Descriptions ..................................................................................... 24
7.6
T
ROUBLESHOOTING
C
OMMUNICATIONS
P
ROBLEMS
................................................................................. 24
7.6.1
Using LEDs to Help Diagnose Communications Problems ............................................................ 25
7.6.2
Using MJXplorer to Troubleshoot Communications Problems....................................................... 25
8
SPECIFICATIONS .................................................................................................................................... 27
8.1
P
HYSICAL
D
IMENSIONS
.......................................................................................................................... 27
8.2
F
IBER
O
PTIC
L
INK
M
ODULE
S
PECIFICATIONS
........................................................................................... 28
8.3
RS-232/RS-485 M
ODULE
S
PECIFICATIONS
............................................................................................. 28
