Keysight Technologies E4360 Series User Manual

Also see for E4360 Series: Service guide Service guide

Contents

Using the Solar Array Simulator 4Series E4360 User’s Guide 61Using the Protection FunctionsEach output has independent protection functions. A front panel statusindicator will turn on when a protection function has been set. Protectionfunctions are latching, which means that they must be cleared once theyhave been set. As explained under “Couple Output Protection” you canconfigure the instrument so that when a protection fault occurs on oneoutput, ALL outputs will be turned off.Of the listed protection functions, OT, OS, and PF not programmable.OV Over-voltage protection is a hardware OVP whose trip level is aprogrammable value. The OVP is always enabled.OC Over-current protection is a hardware OCP whose trip level is aprogrammable value. The OCP is always enabled.OT Over-temperature protection monitors the temperature of each output andshuts down the output if any temperature exceeds the maximum factory-defined limits.OS Over-switching protection monitors the shunt switching frequency of eachoutput and shuts down the output if the switching frequency exceeds the 50kHz limit.PF PF indicates that a power fail condition on the AC mains has disabled theoutput.PROT Prot indicates that the output is disabled because of a coupled protectionsignal from another output.INH The Inhibit input (pin 3) on the rear panel digital connector can beprogrammed to act as an external shutdown signal. Refer to Appendix B forfurther information.Set the Over-Voltage and Over-Current ProtectionThe SAS has hardware over-voltage and over-current circuits thatprotect the unit if the output voltage or output current exceed a presetvalue. When tripped, the protection circuit shuts off the output and firesthe internal crowbar SCR in approximately 50 to 100 microseconds. Toset the protection circuits:Front Panel: SCPI Command:Select Protect\OVP. Enter a valuein the OVP level box and pressSelect.Select Protect\OCP. Enter a valuein the OCP level box and pressSelect.To set the OVP for outputs 1and 2:VOLT:PROT:LEV 10,(@1,2)To set the OCP for outputs 1and 2:CURR:PROT:LEV 1,(@1,2)Couple Output ProtectionProtection coupling lets you disable all output channels when aprotection condition occurs on a single output channel. To couple outputprotection: