070113
228-1616 REV 7
7
KEPCO, INC.
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131-38 SANFORD AVENUE
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FLUSHING, NY. 11355 U.S.A.
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TEL (718) 461-7000
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FAX (718) 767-1102
http://www.kepcopower.com
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email: [email protected]
ANALOG I/O CONNECTIONS.
The Analog I/O Port connector, located on the rear panel of the KLP
power supply (see Figure 2), provides access to analog programming inputs, status signal outputs and
an external trigger input available for use with SCPI *TRG and TRIG commands.
GPIB CONNECTIONS.
Your computer must have a GPIB interface card installed. Connect the power
supply to the computer’s GPIB interface card. Use a standard GPIB interface cable at the GPIB port on
the rear panel (see Figure 2). The default GPIB address is 6. Refer to the User manual to change it from
the front panel, or to the Developer’s Guide to change it using SCPI commands.
RS 232 CONNECTIONS (STANDARD MODELS).
Connect the KLP to a modem using a Null Modem
patch cable at the RS 232 port located on the rear panel (See Figure 2). A Null Modem cable is not
required for older MAC computers with D-sub serial port in which the RXD and TXD line transposition is
accomplished via external hardware. The default baud rate is 38400. Refer to the User manual to
change it from the front panel, or to the Developer’s Guide to change it using SCPI commands.
LAN CONNECTIONS (E-SERIES MODELS).
The LAN interface allows the KLP to communicate via a
built-in web port (using web pages from a standard browser), as well as through other built-in LAN ports.
Connect the KLP to the LAN via the RJ 45 LAN port located at the rear panel (See Figure 2). Refer to the
User manual to configure the LAN interface from the front panel or through the web interface. Refer to
the Developer’s Guide for the associated SCPI commands
OPERATION.
Additional features covered in the User Manual are: Quick Boot (eliminating the power-
up displays), use of the internal relay, operation via the LAN interface or analog signals and setting
coarse/fine adjustment preference of the VOLTAGE and CURRENT controls. An Installation/Operation
Summary is also included in the User manual. The Developer’s Guide covers the GPIB and RS 232 and
LAN interfaces, including the use of the drivers downloadable from:
www.kepcopower.com/drivers/drivers-dl3.htm#klp.
TURNING THE POWER SUPPLY ON.
To turn the power supply on, set POWER ON/OFF circuit
breaker (Figure 1) to ON. If an error occurs, an error code is displayed in the status display (see User
Manual.)
1 When the power supply is turned on, it performs a self-test and displays the following information:
• Status display flashes
KLP
for 2 seconds while
DC VOLTS
and
DC AMPERES
displays show the max-
imum voltage and current capability of the unit.
• Status display flashes
LXI
for 2 seconds if unit is an E-Series model
• Status display flashes
RODC
for 2 seconds if unit has the Rapid Output Discharge Circuit option
installed.
• Status display flashes
VIRT
for 2 seconds while
DC VOLTS
and
DC AMPERES
displays show the
maximum voltage and current allowed for a previously programmed virtual model.
• Status display flashes
PROT
for 2 seconds while
DC VOLTS
and
DC AMPERES
displays show previ-
ously stored OVP and OCP trigger levels.00
2 After a successful self test, the default conditions upon power up are as follows:
• Status display shows SET,
• Output is disabled (green DC OUTPUT indicator is off).
• DC VOLTS and DC AMPERES displays show programmed output conditions: 0 Volts, minimum
Amperes (if DIP switch position 3 was ON when the unit was turned off, previously saved setpoint val-
ues are displayed).
NOTE: A minimum programmed current is required to ensure proper operation of the power supply under all
load conditions. Programmed current is automatically set to be at least the minimum current (actual
value depends on model, see Table 1).
• Since the output is off, Constant Voltage (CV) mode indicator (green LED) and Constant Current (CC)
indicator (amber LED) are off.
