Black Box KV1416A-R2, KV1424A-R2 manual Power control port, To connect and address the switch boxes

Power control port

The ServSwitch CX with IP models provide a serial port for connection to one or more optional power control units. This allows you to control

the mains power being supplied to the connected server(s) so that an authorised user can, if necessary, perform a complete remote cold reboot on a failed server.

	LOCAL	REMOTE	GLOBAL
	USER	USER	USER
		CX R	IP
POWER	724-746-5500		MODEM
IN			/ISDN
	SAM
	SERVER		POWER
	SYSTEM		SWITCH

To connect and address the switch boxes

Note: The ServSwitch CX with IP unit can be powered on during this procedure, however, the switch boxes should be switched off.

1Mount up to four switch boxes in positions where they are close to the server systems that they will control and not too distant from the ServSwitch CX with IP unit (preferably within 2.5 metres).

2Use a serial cable with an RJ9 and a 9-pin D-type connector (see Appendix 7 for specification). Attach the RJ9 plug to the socket marked IN on the first switch box. Attach the other end to the socket marked POWER CONTROL on the ServSwitch CX with IP.

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The control connector of the first power switch is attached, via serial cable, to the rear panel of the ServSwitch CX with IP. Any additional power switches are then attached via a ‘daisy-chain’ arrangement to the first power switch. Each power switch box is then given a unique address and access to each power port (8 ports on each power switch box) is gained using a combination of the switch box address and the port number.

‘Daisy-chain’									Power
control									switch
connections									boxes
	IN	1	2	3	4	5	6	7	8
Box 1
	OUT
	IN	1	2	3	4	5	6	7	8
Box 2

OUT

Power to server

Box 2, port 6 - address: 26

IN	1	2	3	4	5	6	7	8
Box 3
OUT
IN	1	2	3	4	5	6	7	8
Box 4

The power ports are connected to the power inputs of each server system and the power switch box(es) are then connected to a mains power supply.

IMPORTANT: Power switching devices have a maximum current rating. It is essential to ensure that the total current drawn by the equipment connected to the power switching device does not exceed the current rating of the power switching device. You must also ensure that the current drawn from any mains socket does not exceed the current rating of the mains socket.

Setting up, configuring and using power switching requires three main steps:

•Connect and address the switch boxes 

•Configure the power strings

•Operate power switching via configuration menu or via viewer

ServSwitch CX rear

panel

Serial cable to first power switch box

3For each of the remaining switch boxes (if used), use a serial cable with RJ9 connectors at both ends (see Appendix 7 for specification). Attach one end to the socket marked OUT of the previous box and the other end to the socket marked IN of the next box.

4Set the addressing switches on each switch

box using the two micro switches marked Box Switch 1 Switch 2

‘Slct’ on the front panel. The box connected	1	Off	Off
directly to the ServSwitch CX with IP is Box 1	2	On	Off
and so on, down the daisy-chain line to Box	3	Off	On
4 at the end.
	4	On	On
5 Attach IEC to IEC power leads between
	Off = switch upwards
each port and the power input socket of
	On = switch downwards
each server system that requires power	Switch 1 is on the left side
switching. Carefully note to which power

ports, on which boxes, each server system is connected. If server systems have multiple power inputs, then each input must be connected via separate ports, which can be on the same, or different boxes.

6 Connect each box to a suitable mains power input.

Now proceed to the configuration stage covered in the Power switching configuration section within the Configuration chapter.

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