Xantrex Technology RS232-XHR manual User Options and Settings, OVP Control Mode Selection

Installation and Configuration

User Options and Settings

User Options and Settings

CAUTION

If you remove the unit's cover, use proper static control techniques to avoid damage to static-sensitive components on the printed circuit board.

You can customize remote operation settings for OVP (over voltage protection) control and TTL shutdown by changing jumper positions on the RS-232 PCB. Refer to the operating manual for information on how to use over voltage protection and TTL shutdown.

OVP Over voltage protection (OVP) on the RS-232 interface is set at the factory for Selection remote software operation. When operating the power supply in remote mode, you

control the OVP trip level using the OVSET software command. If you return the power supply to local operation by using the REN software command or the front panel LOCAL switch, control of the OVP trip level changes from software control to the front panel OVP potentiometer. The default OVP trip level is set as 110% of the power supply's rated output voltage. See Table 2.10, on page 28 for a complete list of remote power ON default settings.

You can isolate the location of OVP control by changing the positions of the Local OVP Control jumper J65 and the Remote OVP Control jumper J103, both on the RS-232 interface PCB. The default jumper settings allow control of OVP to depend on the operating state of the power supply. By physically changing the jumper settings, you can isolate the location of OVP control to software control only or front panel control only. Table 2.12, “OVP Control Mode Selection” shows a table of jumper settings and OVP programming selection. Refer to “Basic Setup Procedure” on page 23 for the positions of the jumpers on the RS-232 PCB.

Table 2.12 OVP Control Mode Selection

PCB Jumper	PCB Jumper	OVP Programming Selection
J65 Position	J103 Position
Closed (default)	Closed (default)	Software or Front Panel OVP control
		(dependent on the power supply operating state)
Closed	Open	Software OVP control only
Open	Closed	Front Panel OVP control only
Open	Open	Front Panel OVP control only

32 Operating Manual for RS-232 for XHR/XFR Series Power Supply