KEPCO EL Series Electronic Load Operator Manual P/N 243-1295 Firmware Version 3.12 (Unit Rev 2) - Manual (Page 23)

SERIES EL 070110
2-5
TABLE 2-2. REAR PANEL CONNECTIONS
FIG. 2-3 or 2-4
INDEX NO.
NAME DESCRIPTION
1 120VAC 50/60HZ/
250VAC 50/60HZ/ POWER: IEC 60320-C13 line cord connector to connect
mains power (either 120 VAC 50/60 Hz or optional 240V AC
50/60 Hz). NOTE: changing mains power voltage requires
internal connector changes (see PAR. 2.3.1).
2 FUSE FUSE: 120 V, 3AG, 3 Ampere Slo Blow (or 240V, 3AG, 1.5
Ampere Slo Blow)
3 LOAD (–)
Bus bar
UUT Connections. (–) Negative and (+) Positive: High cur-
rent connections to UUT. Connections to ±LOAD are typically
made using the supplied 3/8” low-resistance hardware (2
sets: bolt, nut and lockwasher).
4 LOAD (+)
Bus bar
5 LOAD (–)
terminal
(–) Negative Load Voltage Monitor. (CAUTION: Do not
attempt to pass load current through this connector—it is
only for UUT voltage measurement)
6 RS (–)
terminal
Remote Sense (voltage) Negative Connection (CAUTION:
Do not attempt to pass load current through this connector—
it is only for UUT sense connection)
7 RS (+)
terminal
Remote Sense (voltage) Positive Connection (CAUTION: Do
not attempt to pass load current through this connector—it is
only for UUT sense connection)
8 LOAD (+)
terminal
(+) Positive Load Voltage Monitor. (CAUTION: Do not
attempt to pass load current through this connector—it is
only for UUT voltage measurement)
9 ANALOG PGM
Isolated BNC
Connector
A 0 to 10V analog programming signal can alter the digital
setpoint of the CONTROL parameter (depending on mode
selection and digital setpoint) from 0 to full scale. See PAR.
3.12 for details and an example.
10 ANALOG I LOAD
Isolated BNC
Connector
This signal is 0 to 10V d-c corresponding to 0A to the config-
ured/calibrated full scale current. Output at center pin when
the load is drawing current from the UUT.
11 LAN Not shown.
12 MSTR
Master Out
connector
Standard RS-522 connector. Connects from Master Out to
Slave In (SL-I) for multiple units in parallel (see Figure 2-9).
See PAR. 3.13 for master/slave configurations. See Table 1-
5 to order RJ 22 master/slave cable.
13 RS-232
connector
Standard RS-232. Connects with a remote device using RS
232 protocols and SCPI commands (see Figure 2-3).
14 USB
connector
Connection to remote device for command, monitoring or
calibration. Use USB connector of master to communicate
with multiple loads in a master/slave configuration. (see Fig-
ure 2-7).
15 SL-O
Slave Out
connector
Standard RS-522 connector. Connects Slave Out to SL-I
(Slave In) of next slave if unit is a slave in a parallel configu-
ration using more than two units. Only use Kepco cable (see
Table 1-5) for master/slave connections (Figure 2-9).
16 SL-I
Slave In
connector
Standard RS-522 connector. Connects Slave Out to SL-I
(Slave In) of next slave if unit is a slave in a parallel configu-
ration using more than two units. Only use Kepco cable (see
Table 1-5) for master/slave connections (Figure 2-9).
17 GPIB
IEEE 488 connector
Optional. When installed, connects user GPIB card with EL
load using standard GPIB cable (not supplied).