KEPCO KLP Series (older -1200 models) Operator Manual - Manual (Page 51)

KLP073008
3-11
3.2.11.2 DISPLAY MODEL
Enter UTIL menu and rotate either VOLTAGE or CURRENT control until status display reads
MODL (see PAR. 3.2.11).
• The DC VOLTS display shows the model voltage rating (e.g, 75 for KLP 75-33-1200).
• The DC AMPS display shows the model current rating (e.g, 33 for KLP 75-33-1200).
3.2.11.3 RELAY CONTROL
Enter UTIL menu and rotate either VOLTAGE or CURRENT control until status display reads
RELY (see PAR. 3.2.11). Press DC OUTPUT switch to enter Relay Control menu.
• The DC VOLTS display indicates whether the relay is currently ON (energized) or OFF
(deenergized).
• Rotate either VOLTAGE or CURRENT control to see the available relay control modes
in the status display. The list of modes in the order they appear are:
FLT (factory default) - Relay is set to energize automatically upon detection of one of
three preselected conditions:
NORM: (factory default) relay energizes immediately upon detection of a system
(fatal) error:
V->C: relay energizes immediately upon detection of a system (fatal) 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 (fatal) error and,
after a user-programmable delay, the relay energizes upon a transition
from constant current (CC) to constant voltage (CV) mode.
MAN - Relay on/off is controlled manually, directly from the front panel (see below).
LIST - Relay on/off is controlled remotely using LIST commands via GPIB or RS 232
interface (see PARs. B.10 and B.11).
1. 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. Pro-
ceed to step 2 if FLT is selected, proceed to step 4 if MAN is selected, otherwise skip to step
5.
2. If FLT is selected, rotate VOLTAGE or CURRENT control to select NORM, V->C, or C->V. in
the status display. If NORM is selected, press the DC OUTPUT switch to save selection and
skip to step 5. If V->C, or C->V is selected, proceed to step 3.
3. While V->C or C->V is in the status display, the DC AMPERES display shows the delay in
seconds, from 000.5 to 128.0: NNND, where NNN is an integer from 0 to 128 and D will be
either .0 or .5 (000.0 is not permitted). The delay determines the length of time that the unit
must be operating in the new mode before energizing the relay.
The factory default delay time is set to 1.0 seconds to prevent false tripping of the relay dur-
ing application of output power to low impedance or highly reactive loads. If false tripping
occurs, this delay may be increased as needed.
To change the delay, press in and rotate either the VOLTAGE or CURRENT control; release
the control when the desired delay is showing in the DC AMPERES display. Press the DC
OUTPUT switch to save selection and skip to step 5.