Lindy CPU IP Access Switch Plus manual Power control port, 

Power control port

The CPU IP provides 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 host(s) so that an authorised remote user can, if necessary, perform a complete cold reboot on a failed host system.

The control connector of the first power switch is connected, via serial cable, to the rear panel of the CPU IP. Any additional power switches are then connected 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 (4 or 8 ports on each power switch box) is gained using a combination of the switch box address and the port number.

‘Daisy-chain’
control	IP		Power
connections
	Access Switch Plus	LOC REM VNC 100 LNK PWR	switch
			boxes

Box 1	IN	1	2	3	4	5	6	7	8
	OUT
Box 2	IN	1	2	3	4	5	6	7	8
	OUT
									Power to computer
									Box 2, port 6 - address: 26
Box 3	IN	1	2	3	4	5	6	7	8
	OUT
Box 4	IN	1	2	3	4	5	6	7	8

The power ports are connected to the power inputs of each computer 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 ð

•Configure the power strings

•Operate remote power switching

To connect and address the switch boxes

Note: The CPU IP 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 computers that they will control and not too distant from the CPU IP (preferably within 2.5 metres).

2Use a serial cable with an RJ10 and a 9-pin D-type connector (see Appendix 7 for specification). Connect the RJ10 plug to the socket marked ‘IN’ on the first switch box. Connect the other end to the socket marked ‘COM2’ on the CPU IP.

5V

COM2
POWER
CONTROL
	IN
KVM	CONSOLE

3For each of the remaining switch boxes (if used), use a serial cable with RJ10 connectors at both ends (see Appendix 7 for specification). Connect 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 micro switches according to the switch box manual.

5Connect IEC to IEC power leads between each port and the power input socket of each computer that requires power switching. Carefully note to which power ports, on which boxes, each computer 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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