Eaton Power Xpert PXM 4000, Руководство пользователя и инструкция по установке

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3 Installation
3.12. Communication Wiring
The Power Xpert Meter (PXM 4000/6000/8000) has inverted terminal blocks for CM4 - the
24V Auxiliary I/O Power and CM6 - the Display Power. These inverted terminal blocks
prevent the user from crossing 24v source and communication terminals.
RS485 fail safe biasing resistors are used at each master port.
Eaton strongly recommends using ferrules on wire ends when connecting to a terminal
block.
When connecting to a terminal block, the twisted pair sensitivity is critical for COM0,
COM1 and COM2. This means that the Data A wire must match up with Data A on the
terminal and the Data B wire must match up with Data B on the terminal.
**RS485 maximum cable length is dictated by baud rate. Above 38.4Kbaud the length is restricted to 2,000 ft.
Terminal Port Name Port
Type
Port
Connection
Cable Length Cable Type Max
Baud
Rate
Max
Number
of
Devices
End of Line
Termination
Star Tap Twisted Pair
Sensitivity
CM5 COM0 Display RS485
Terminal
Plug 2,000ft / 610 M
Shielded Twisted
Pair 115 K 16 120ohms NO NO YES
CM3 COM1RS485 RS485
Terminal
Plug
**4,000ft /
1,219.20 M
Shielded Twisted
Pair 115 K 32 120ohms NO NO YES
CE3 COM2RS485 RS485
Terminal
Plug
**4,000ft /
1,219.20 M
Shielded Twisted
Pair 115 K 32 120ohms NO NO YES
CE4 COM3RS232 RS232 DB9 50 ft / 15 M Shielded Cable 115 K 2(1:1) na NO NO YES
CE1 LAN/WAN 100Fx ST 2000 M
Multimode 62.5
m or 50 µm 100M 2(1:1) na NO NO NO
CE2 LAN/WAN 10/100 T RJ45
328 - 492
ft/100-150M
CAT5 Shielded
TwistedPair /
UTP* 100M 2(1:1) na NO NO NO
CM1
Local Configu -
ration 10/100 T RJ45 98 ft / 30 M
Cat 5 Shielded
Twisted Pair/
UTP 100M 2(1:1) na NO NO NO