KEPCO EL Series Electronic Load Operator Manual P/N 243-1295 Firmware Version 3.22 through 3.41 - Manual (Page 40)

3-6
SERIES EL 062011
3.11.1 POWER UP
Turn on power to all loads connected as Master/Slave. The units will go through power-up and
reset cycles until all slaves are recognized (this may take a few minutes). NOTE: Power-up time
can be reduced by powering up the slaves 10 to 20 seconds before powering up the master.
• The LOAD button on each Slave Load turns green once the Load completes its diagnos-
tic tests.
• The VOLTS display on the Slave(s) reads SLAU (Slave).
• The LOAD button on the Master Load turns green once the Master Load 1) completes its
diagnostic routine, 2) interrogates the Slave(s) for Master-Slave connection eligibility
and ratings, 3) establishes the overall Master-Slave Load configuration.
3.11.2 LOCAL (FRONT PANEL) OPERATION
The Load can be operated from the Master front panel as described in the previous paragraphs
for a single unit. Only the Master Load front panel is active
3.11.3 REMOTE (COMPUTER) OPERATION
If a computer is connected to the Master Load of a master/slave configuration in terminal display
mode, the information shown in Figure 3-2 is displayed at startup (boot).The Master-Slave con-
figuration responds to the SCPI command set described in Appendix A and B.
3.11.4 INDICATIONS DURING MASTER/SLAVE OPERATION
The Master Load displays:
• AMPS: Total Current drawn by the Master/Slave configuration
• VOLTS: Voltage applied to each of the Loads
• KW: Total power in kW drawn by the Master/Slave configuration
Slave Load(s) display:
• AMPS: Current drawn by the individual Slave
• VOLTS: reads SLAU showing unit is a slave connected to Master.
• KW: Power in kW drawn by the individual Slave.
3.11.5 MASTER/SLAVE CONTROLS AND INDICATORS
Controls and indicators function as described for a single unit, however controls are only active
on the Master Load. Indicators on the Master Load are for Master/Slave configuration. Indica-
tors on the Slave indicate individual Slave Load current and power and Slave status (VOLTS
display reads SLAU). Slave LOAD switch indicators show engaged (amber) or disengaged
(green) status of each slave. Fault indications are displayed on each slave, as well as the mas-
ter.