KEPCO KLP Series User Manual, Rev 4 - Manual (Page 59)

KLP091313
3-17
• ANRB - Analog Output Full Scale calibration voltages (see PAR. 3.2.17.4)
• ANPR - Analog Input Full Scale calibration voltages (see PAR. 3.2.17.5)
• LBT - [Standard models only] Loop Back Test used to isolate RS 232 communication
problems (see KLP Developer’s Guide).
• CAL - Display last calibration date and/or begin Calibration (see PAR. 3.2.17.6)
• RTN - Exit any submenu and return to previous menu
3.2.17.1 INTERNAL RELAY CONTROL
The internal relay contacts available at the Analog I/O connector can be configured from the
front panel to operate in either Fault, Manual or List mode. If FAULT mode (the factory default) is
selected, the relay energizes automatically upon detection of a user-selected condition. The
default selection is NORM (normal), triggering the relay for any system fault (see PAR. 1.5.9).
Two additional selections are available: a) V->C, adding a fault indication when the unit transi-
tions from Constant Voltage (CV) to Constant Current (CC) mode; and b) C->V, adding a fault
indication when the unit transitions from CC to CV mode. If V->C (or C->V) is selected, the
amount of time the unit must be in CC (or CV) mode before the relay energizes may be pro-
grammed from the front panel (see step 2a) or via the CONFIGURE INSTRUMENT web page
(E-series models only).
1. Enter UTIL menu (see PAR. 3.2.17, steps 1 through 3) and rotate either VOLTAGE or CUR-
RENT control until status display reads RELY. The DC VOLTS display indicates whether the
relay is currently ON (energized) or OFF (deenergized). Tap DC OUTPUT switch to enter
Relay Control menu.
• Rotate either VOLTAGE or CURRENT control to see the available relay control modes in
the status display. The modes are:
FLT (factory default) - Relay is set to energize automatically upon detection of one of
three preselected conditions (tap DC OUTPUT to access FLT submenu):
NORM: (factory default) relay energizes immediately upon detection of a system
error:
V->C: relay energizes immediately upon detection of a system error and, after
a user-programmable delay, the relay energizes upon a transition
from constant voltage (CV) to constant current (CC) mode.
C->V: relay energizes immediately upon detection of a system error and, after
a user-programmable delay, the relay energizes upon a transition
from constant current (CC) to constant voltage (CV) mode.
RTN: Return to FLT menu.
MAN - Relay on/off is controlled manually, directly from the front panel (see below).
Relay state is not retained; relay will be off when unit is turned on
LIST - Relay on/off is controlled remotely using LIST commands via GPIB or RS 232
interface (see KLP Developer’s Guide).
RTN - Return to RELY menu.
2. To select mode rotate either VOLTAGE or CURRENT control until status display reads FLT
(factory), MAN (manual), or LIST. Then press DC OUTPUT switch to save selection.