6
Control Unit Ethernet Interface Connector (J17)
RJ45
RJ-45 Pin
Wire Color
10BaseT Signal Name
1
White/Orange
T
2
Orange
Transmit-
3
White/Green
4
Blue
Un-used
5
White/Blue
Un-used
6
Green
Receive-
7
White/Brown
Un-used
8 Brown
Un-used
1.2.3 CONVERTER CONNECTIONS TO THE NSU
NSU Connections
J1-J13
DNB/UPB
Block
Converter
9400/9600
Converters
9700/9800
9900
Converter
1/3rd Rack
Converters
Unit Normally-Open
Pin 1
J7-1 J7-1 J3-1 J7-4
Unit Status Common
Pin 2
J7-2 J7-2 J3-2 J7-2
Unit Normally-Closed
Pin 3
J7-3 J7-3 J3-3 J7-6
RS485 Data-
Pin 5
N/A
J6 orJ10
Pins –3 and
5
J6 Pins –3
and 5
J6 Pins –3
and 5
RS485 Data+
Pin 9
N/A
J6 orJ10
Pins 7 and 9
J6 Pins 7
and 9
J6 Pins 7
and 9
Table 1-3. Converter Connections to the NSU
The table above lists the MITEQ converters, their Redundant switch connections and
RS485 remote connections (where available) and where to connect them to the NSU
Control Unit.
NOTE: For NSU1-R mating cable assembly is provided to mate Redundant Plate
assembly to the NSU controller.
The minimum requirement for any converter connected to the NSU is a Form-C set of
contacts, which are used to indicate the fault status. In addition, any converter capable
of remote control must have its RS485 port wired to the NSU. The RS485 connection
between a Primary Converter and the NSU will enable the Primary Converter settings to
be stored automatically in the NSU. In the absence of a Serial Link between the Primary
Converter and the NSU, the Primary Converter settings must be manually stored in the
NSU. When a Primary Converter fails, its settings are transferred to the Backup
converter via the RS485 connection between the NSU and the Backup Converter. In the
case where the NSU-Converter Serial Link is disabled for the Backup Converter a fault
in a Primary Converter will cause the transfer switches to switch but none of the settings
of the Backup Converter will be changed. Converters with an RS485 connection to the
NSU should have their NSU-Converter Serial Link option enabled in the NSU.
Converters without an RS485 connection to the NSU should have their associated NSU-
Converter Serial Link option disabled in the NSU. The NSU-Converter Serial Link
options operation is described later in this document.