American Power Conversion 240-320kW 400V manual Connections Without Converter

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6.4.1.1 Connections Without Converter

Connect a 25-pin female Sub-D and a 9-pin male Sub-D connector with a 3-wire shielded cable, as shown in the table below. Connect shield at one end only.

Pin Connection for Interconnection Cable (without converter):

Host (DTE)		Remote Display (DTE)
25-pin female		9-pin male
pin No.		pin No.
2	(TXD)	2	(RXD)
3	(RXD)	3	(TXD)
7	(GND)	5	(GND)
House (shield)		No Connection

6.4.1.2 Connections With Converter

Connections to be made according to converter manual.

Pinconnection example only:

Pin Connections for cable from host to ME800A-R2.

Host		ME800A-R2
(DTE)		(DCE)
25-pin female		25-pin male
pin No.		pin No.
2	(TXD)	3
3	(RXD)	2
7	(GND)	7
House (Shield)		No connection

Pin connection for cable from

ME800A-R2 to Remote Display

ME800A-R2	Remote Display
(DCE)	(DTE)
25-pin male	9-pin male
pin No.	pin No.
3	2	(RXD)
2	3	(TXD)
7	5	(GND)
No connection	House (Shield)

The ME800A-R2 must be set up as a DCE with no RTS/DTR control.

The interconnection cable between the two ME800A-R2 boxes is a 4-wire twisted pair telephone cable with or without shield. The shield improves noise immunity but reduces maximum communication distance.

990-4045a

58 Installation Guide APC Silcon 240-320kW 400V UPS