Xantrex Technology XDC manual Toggle, To shift from local to remote control, Local/Remote

Operation

Power Supply Operation

Shutdown vs Protection Alarm

If a protection setpoint is exceeded, the system does the following:

1.If S/D if tripped? Y has been selected, the unit shuts down. If it is an OVP alarm, the unit shuts down.

2.If S/D if tripped? N has been selected, and it is not an OVP alarm, the unit does not shut down but does create an alarm message.

3.If the unit is not shutting down, the system still sets the appropriate status bits in the questionable status register, which can be queried remotely. See “Status Registers” on page 142 for more information.

Set Up The power supply can be controlled locally with the front panel or remotely through Remote several different interfaces. The remote interfaces are discussed in Section 4, Control “Remote Operation”, Appendix B. “SCPI Command Reference”, and Appendix D.

“GPIB”.

The factory default remote control setting is RS-232. It has a default configuration of 9600 baud.

Toggle	The LCL/RMT key allows you to shift between local and remote control.
Local/Remote	To shift from local to remote control:
	Do This	You Will See
	LCL/RMT	RS-232

In the case shown, the power supply has changed from local, front panel control to remote control through its RS-232 port. The remote control options are RS-232, Analog V and I, Analog V, Analog I, GPIB, and Linked. You can change the remote control source through the REMOTE SELECT menu option. (See “Select Remote Control Source” below.)

There are 2 exceptions to this function:

•If the power supply has Local Lockout (LLO) active, it will not let you shift from remote to local control. Instead, the display will show LLO on, and the system will remain in remote control.

•If the system is using GPIB, it will shift to remote control only when the Remote enable line, REN = 1 and a command is sent from the remote controller.

74 Operating Manual for XDC Series Power Supply