KEPCO KLN Series (750W, 1500W, 3000W), Main Contro Firmware Version 1.70 and higher - Manual (Page 22)

1-12 KLN Series 051614
1.4 LOCAL CONTROL
The front panel encoder can set and adjust output voltage and current under local control. The
display uses two 4-digit LED displays to provide a digital readout of output voltage and current.
1.5 REMOTE CONTROL
The KLN Power Supply can be remotely controlled directly via the built-in RS-485 interface
using SCPI commands (see Appendix A and B). Most features available in local mode can also
be accessed remotely via the RS-485 (standard), and GPIB (optional) or LAN (optional) digital
interfaces. The transmission rate of RS-485 can be up to 115.2K bps. The RS-485 interface can
be used to connect multiple power supplies, up to a maximum of 254 units. The maximum effec-
tive control distance can be up to 1000m.
Digital remote control is also available via optional GPIB (suffix G) and LAN (suffix E) interfaces.
1.6 ANALOG CONTROL
External reference signals, provided through the Programming Control port (see Table 2-4), can
be used to control the output voltage and current of the KLN. The Programming Control port
allows control of output on/off and permits emergency shutdown of the output. Output signals
allow remote monitoring of whether the unit is powered on, output on/off, alarm condition, output
voltage and current, and operating mode: Constant Current (CC) or Constant Voltage (CV).
Refer to PAR. 3.5 for further details on using external signals to control and monitor the output.
1.7 FEATURES
1.7.1 DIGITAL CALIBRATION
The KLN Power Supply features high stability and long intervals between calibration. The unit
contains no user-required internal adjustments. Calibration is done by means of software (see
Section 4).
1.7.2 PROTECTION
The following protection is provided: OVP (Overvoltage protection), OCP (overcurrent protec-
tion), OTP, (overtemperature protection) and blown fuse.
1.7.3 SAVING AND RECALLING SETTINGS
The KLN offers 16 memory locations accessible from the front panel that can be used to store a
set of operating parameters for later use. For each location, the user can store voltage and cur-
rent values. The stored settings can then be recalled to quickly program the unit to the predeter-
mined setting. Refer to PAR. 3.3.6 and 3.3.7 for further details.
1.7.4 PARALLEL AND SERIES CONFIGURATIONS
Identical KLN units may be configured in series (up to two units including master) or parallel (up
to five units including master) configurations. Parallel configurations provide for automatic cur-
rent sharing (see PAR. 2.8 for details).