KEPCO KLR Series User Manual - Manual (Page 22)

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KLR 091313
1.5.4 OVERVOLTAGE/OVERCURRENT PROTECTION
Overvoltage and Overcurrent protection values can be individually programmed. If the output
voltage/current exceeds the overvoltage/overcurrent protection value, the protection circuit
latches the output off, flashes an overvoltage (OVP) or overcurrent (OCP) error message on the
status display and sets a status bit that can be retrieved through the RS 232 [standard models
only], LAN [E-Series models only], or GPIB port. The N.O. and N.C. contacts of the relay pro-
vide status flags via the Analog I/O port connector. Refer to PAR. 3.2.17.1 for more information.
1.5.5 USER-DEFINED VOLTAGE/CURRENT LIMITS (LIMIT MODELS)
The KLR Power Supply can be programmed to User-defined values that can be lower than the
maximum values. A KLR power supply configured in this way is referred to as a Limit Model. For
example, the KLR 40-60 can be programmed for maximums of 40A@30V or 30A@35V. Once
the User-defined limits are set, programming of values exceeding the limit values will not be
accepted. Refer to PAR. 3.2.9 for more information.
1.5.6 STORAGE OF USER-PROGRAMMED ACTIVE SETTINGS
The KLR Power Supply contains 40 memory locations that can be used to store active settings.
This feature is only available via digital remote programming. Values are stored in the nonvola-
tile memory, and are retained when the unit is turned off (refer to PAR 3.3.2 for more informa-
tion).
1.5.7 USER-PROGRAMMED SEQUENCES
The KLR Power Supply contains 100 memory locations for programming sequences that can
program the KLR to produce a variety of sequential output operations. Each memory location
accommodates a value for voltage and current and a dwell time (how long the parameter is to
be in effect). Values are stored in the volatile memory, and are lost when the unit is turned off
(refer to PAR 3.3.2 for more information).
1.5.8 LAST SETTING RECALL
The KLR Power supply has the ability to retain the last voltage and current setpoints pro-
grammed before the unit is shut off. A DIP switch selection (position 3) allows the user to deter-
mine whether the power supply is set to 0V, minimum current or the retained voltage and current
setpoints upon the next power-up sequence. Refer to Table 2-2 and PAR. 3.2.10.3 for more
information.
1.5.9 BUILT-IN PROTECTION
KLR Series Power Supplies provide built-in protection against the system faults listed below. In
each case, a detected fault results in immediate latched shutdown of the power supply output.
In addition, the status display flashes the appropriate indication and the status bit is set for
retrieval through either of the digital programming ports. If the internal relay is configured for
FAULT mode (factory default setting, see PAR. 3.2.17.1) the relay will toggle to provide a com-
posite fault indication at the analog programming port. The indication time is limited by internal
hold-up capacity for PWR faults (as the unit shuts down, when power is no longer sufficient to
power the relay it de-energizes.
a. Overtemperature (OTP). Monitors heatsink temperature; trips if it exceeds factory set limit.
b. Overvoltage (OVP) or overcurrent (OCP) at the output. (See PAR. 3.2.11)