Eaton Power Xpert PXM 4000, User And Installation Manual

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Page 252
IM02601004E
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E Option Cards
E.6. Communications Expansion Card (PXMCE card)
The Power Xpert Meter can be equipped with a Communications Expansion card. The
Communications Expansion card can be ordered with a new meter or as a field upgrade.
This card includes a 100FX fiber port , a 10/100Base T RJ45, an RS485 and RS232 ports.
The user must select either the 100FX fiber port or the 10/100Base T RJ45 port for the
Ethernet network connection. This configuration option is described in the Setup chapter.
For field upgrade, de-energize equipment.
The Power Xpert Meter includes sensitive electronic components. Caution should be used
to avoid electrostatic discharge to prevent equipment damage.
1. Remove the power supply and verify that the health LED is no longer illuminated before
proceeding. Remove the main communications board.
2. Carefully insert Communication Expansion card using card slot provided. Care should
be taken that the card alignment is correct before seating the card into the connector
socket.
4. Reassemble cards in appropriate order, securing retaining screws on all cards.
CE
4
PXCE-B
100 Fx (ST)
LAN/WAN
10/100 T (RJ45)
TXD/RXD
Com 2 RS485
Link
Com 3 RS232
1
C
E
3
-
2
3
DA
RXD TXD
DTE
TXD RXD
SH
DB
CE
2
Tx
C
E
1
-
Rx
CW
100FX ST-type Ethernet
(multi-mode 62.5/125 or
50/125 µ
m
)
10/100Base-T Ethernet RJ45
COM2 RS485
Terminal Block CE3-
Terminals:
CE3-3 SH
RS485 Shield
CE3-2 DB RS485 Data B*
CE3-1 DA RS485 Data A*
* Twisted pair
COM3 RS232 DB9 DTE
Connector CE4
Pinout
1 CD Carrier Detect
2 RX Receive
3 TX Transmit
4 DTR Data Terminal Ready
5 GND Ground
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear To Send
9 RI Ring Indicator
CE Com 2 (Terminal CE 3)
Each RS 485 link requires a set of fail safe bias re-
sistors to guarrantee that the line goes to a marked
state while the line is idle.
The Power Xpert Meter convention is to set the 750
ohm bias resistors at the Master node only.
The RS 485 Com port on the CE card defaults to
Master Gateway function. The bias resistors are
engaged via the jumper.
Com 2 can be programmed alternatively to be a
Slave Gateway or Modbus Slave RTU and there-
fore would need the bias resistors dissengaged via
jumpers onthe circuit board. To dissengage the bias
reisitors, the CE board must be removed form the
meter. See general card removal guidelines.
Com 2 two bias jumpers, A and B; one for each data
line. Both data lines should be treated the same.
The jumper designators are stenciled as CN# with
the following positions:
Jumper Setting: N=No Bias (slave); Rb=Bias
(master)
NOTE: Care should be taken to keep jumpers A
and B set to the same value.
CE Com 3
Com 3 RS 232 port can be programmed to be a
master or Slave Gateway or a Modbus slave RTU.
Note: The Power Xpert Meter must be equipped with a Communications Expansion card
in order to interface to the NTP Time Server.