KEPCO KLN 750W Operator's Manual
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KEPCO KLN 750W Operator's Manual

Programmable d-c power supply low profile
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OPERATOR'S MANUAL
PROGRAMMABLE D-C POWER SUPPLY
KEPCO INC.
An ISO 9001 Company.
IMPORTANT NOTES:
1)
This manual is valid for the following Firmware Versions:
FIRMWARE VERSION
Main Control 1.70 and higher
2)
A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num-
bers. Before using this Instruction Manual, check your equipment firmware version num-
ber to identify your model. If in doubt, contact your nearest Kepco Representative, or the
Kepco Documentation Office in New York, (718) 461-7000, requesting the correct revision
for your particular model and firmware version number.
3)
The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.
Data subject to change without notice.
©2014, KEPCO, INC
P/N 243-1339-r10a
KEPCO, INC.  131-38 SANFORD AVENUE  FLUSHING, NY. 11355 U.S.A.  TEL (718) 461-7000  FAX (718) 767-1102
KLN 750W, 1500W, 3000W
LOW PROFILE
MODEL
KLN 750W, 1500W, 3000W

POWER SUPPLY

ORDER NO.
email: hq@kepcopower.com  World Wide Web: http://www.kepcopower.com
NOTE.
KEPCO
THE POWER SUPPLIER™
®

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  • Page 1: Power Supply

    Data subject to change without notice. KEPCO ® ©2014, KEPCO, INC P/N 243-1339-r10a THE POWER SUPPLIER™ KEPCO, INC.  131-38 SANFORD AVENUE  FLUSHING, NY. 11355 U.S.A.  TEL (718) 461-7000  FAX (718) 767-1102 email: hq@kepcopower.com  World Wide Web: http://www.kepcopower.com...

  • Page 3: Safety Instructions

    Service must be referred to authorized personnel. Using the power supply in a manner not specified by Kepco. Inc. may impair the protection provided by the power supply. Observe all safety precautions noted throughout this manual. Table 1-6 lists symbols used on the power supply or in this manual where applica- ble.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS SECTION PAGE SECTION 1 - INTRODUCTION Scope of Manual ............................. 1-1 General Description..........................1-1 Specifications ............................1-2 Local Control ............................1-12 Remote Control ............................1-12 Analog Control............................1-12 Features ..............................1-12 1.7.1 Digital Calibration..........................1-12 1.7.2 Protection............................1-12 1.7.3 Saving and Recalling Settings ......................
  • Page 6 TABLE OF CONTENTS SECTION PAGE 3.3.4 OVP/OVC Operation and Recovery....................3-9 3.3.5 Enabling/Disabling DC Output Power ....................3-9 3.3.6 Storing Power Supply Output Settings....................3-9 3.3.7 Recalling Power Supply Output Settings ..................3-10 3.3.8 Output Mode (Voltage Set: Direct or Enter) ..................3-10 3.3.9 Power On Setting..........................
  • Page 7 TABLE OF CONTENTS SECTION PAGE 3.5.3 Remote Control of Output Voltage Using an analog signal ............... 3-30 3.5.4 Remote Control of Output Current Using an analog signal ............... 3-30 3.5.5 Recalling Previously Stored Setting Using Programming Control Port..........3-30 3.5.6 Monitoring Output Status Using Programming Control Port ..............
  • Page 8 TABLE OF CONTENTS SECTION PAGE OUTP Command..........................B-3 B.10 OUTP Query ............................. B-3 B.11 OUTP :PON Command ........................B-3 B.12 OUTP :PON? Query..........................B-3 ection B.13 OUTP :PROT :CLE Command ....................B-3 B.14 SOUR :CURR Command....................... B-4 ent? B.15 SOUR :CURR Query ........................
  • Page 9 KLN Power Supply, Automatic Crossover Characteristics................1-1 KLN 750W Power Supply, Outline Drawing ....................1-7 KLN 750W Power Supply, Outline Drawing (two units Mounted in Rack) ..........1-8 KLN 1500W Power Supply, Outline Drawing sd ..................1-10 KLN 3000W Power Supply, Outline Drawing ....................1-11 KLN 750W Series Rear Panel ........................
  • Page 10 LIST OF TABLES TABLE TITLE PAGE KLN Series Model Parameters ........................1-2 KLN General Specifications ........................1-3 Equipment Supplied ........................... 1-13 Accessories ..............................1-14 Safety Symbols ............................1-15 Rear Panel Connector Functions ....................... 2-2 RS-485 Port Input/Output Pin Assignments ....................2-2 GPIB (IEEE 488) Port Input/Output Pin Assignments ................

  • Page 11: Section 1 - Introduction

    This manual contains instructions for the installation and operation of the KLN series of 750, 1500W, and 3000W Watt programmable, voltage and current stabilized d-c power supplies, hereafter referred to as KLN, from Kepco, Inc., Flushing, New York, U.S.A. GENERAL DESCRIPTION KLN Series power supplies are voltage and current stabilized d-c sources with a sharp cross- over between the constant voltage and constant current mode of operation.

  • Page 12: Specifications

    SPECIFICATIONS Table 1-1 below indicates parameters that vary for different KLN models; Table 1-2 lists general specifications that apply to all KLN models. TABLE 1-1. KLN SERIES MODEL PARAMETERS (5)(10) (10) Remote d-c Output Range Ripple Line Regulation Load Regulation Response Time Sense Constant...

  • Page 13: Kln General Specifications

    TABLE 1-1. KLN SERIES MODEL PARAMETERS (CONTINUED) (5)(10) (10) d-c Output Range Remote Ripple Line Regulation Load Regulation Response Time Sense Constant Constant Full Full Voltage Model Voltage Current Load Load Load drop (8)(9)(11)(12) Down Down (max.) (CV) (CC) 0.05% 0.1% 0.05% 0.1%...
  • Page 14 TABLE 1-2. KLN GENERAL SPECIFICATIONS (CONTINUED) SPECIFICATION RATING/DESCRIPTION OUTPUT CHARACTERISTICS Type of Stabilizer Constant Voltage (CV)/Constant Current (CC), automatic crossover Adjustment Range Voltage: 0 to 100% of rated voltage Current: 0 to 100% of rated current Protective functions Programmable overvoltage (OVP), Programmable overcurrent (OCP), Overtemperature (OTP), Fuse blown...
  • Page 15 TABLE 1-2. KLN GENERAL SPECIFICATIONS (CONTINUED) SPECIFICATION RATING/DESCRIPTION PROGRAMMING CHARACTERISTICS - DIGITAL Command setting resolution ±0.002% of full scale Command reading resolution ±0.002% of full scale Command and D/A Voltage: ±0.1% ± 3C at rated voltage setting accuracy Current: ±0.5% ± 3C at rated current ±0.2% ±...
  • Page 16 TABLE 1-2. KLN GENERAL SPECIFICATIONS (CONTINUED) SPECIFICATION RATING/DESCRIPTION PHYSICAL CHARACTERISTICS - CONTINUED Programming Control port 26-pin connector SER IN port 2-position Euroblock (mating connector supplied) Sense port 3-position Euroblock (mating connector supplied) RS-485 port 3-position Euroblock (mating connector supplied) LAN port (optional) RJ 45 connector GPIB port (optional) Standard IEEE 488.2 GPIB connector...
  • Page 17 KLN Series 022014...

  • Page 18: Kln 750W Power Supply, Outline Drawing (Two Units Mounted In Rack)

    FIGURE 1-2. KLN 750W POWER SUPPLY, OUTLINE DRAWING (TWO UNITS MOUNTED IN RACK) (SHEET 1 OF 2) KLN Series 022014...
  • Page 19 NOTE: 150V MODELS SHOWN. FIGURE 1-2. KLN 750W POWER SUPPLY, OUTLINE DRAWING (SHEET 2 OF 2) KLN Series 022014...
  • Page 20 1-10 KLN Series 022014...
  • Page 21 1-11 KLN Series 022014...

  • Page 22: Local Control

    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. 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).

  • Page 23: Miscellaneous Features

    • Approved as compliant to LXI Version 1.4, Device Specification 2011. EQUIPMENT SUPPLIED Equipment supplied with the KLN power supply is listed in Table 1-3. TABLE 1-3. EQUIPMENT SUPPLIED KEPCO PART ITEM DESCRIPTION NUMBER Power Cable, (125V/15A) (750W only) Connects unit to 115V a-c source power.

  • Page 24: Accessories

    Accessories (not supplied) for the KLN Power Supply are listed in Table 1-4. TABLE 1-4. ACCESSORIES ITEM FUNCTION PART NUMBER Rack Mount Kit Allows mounting of one half-rack KLN 750W unit in RA 81-1 (750W models only) standard 19-inch rack (L-type brackets supplied with (Kepco) unit, not included in Kit).

  • Page 25: Safety

    Service must be referred to authorized personnel. Using the power supply in a manner not specified by Kepco. Inc. may impair the protection provided by the power supply. Observe all safety precautions noted throughout this manual (see listing on Safety page A, preceding the Table of Contents).

  • Page 27: Section 2 - Installation

    Front Panel: Refer to Figure 3-1 (750W), 3-2 (1500W) or 3-3 (3000W) and Table 3-1. b) Rear Panel: Refer to Figure 2-1 (750W), 2-2 (1500W) or 2-3 (3000W) and Table 2-1. FIGURE 2-1. KLN 750W SERIES REAR PANEL FIGURE 2-2. KLN 1500W SERIES REAR PANEL FIGURE 2-3.

  • Page 28: Lan Ethernet Connector (Lan Interface Only)

    TABLE 2-1. REAR PANEL CONNECTOR FUNCTIONS NUMBER (FIGURE 2-1, CONNECTOR/TERMINAL FUNCTION 2-2 or 2-3) RS-485 Allows connection to RS-485 bus. See Table 2-2 for details. 3-pin pluggable terminal block Optional: Allows connection to GPIB bus or LAN (optional) when installed. See Table 2-3 for either 24-pin GPIB GPIB connector details.

  • Page 29: Gpib (Ieee 488) Port Input/Output Pin Assignments

    TABLE 2-3. GPIB (IEEE 488) PORT INPUT/OUTPUT PIN ASSIGNMENTS SIGNAL NAME FUNCTION I/O Line I/O Line I/O Line I/O Line End or Identify Data Valid NRFD Not Ready for Data NDAC Not Data Accepted Interface Clear Service Request Attention SHIELD Shield I/O Line I/O Line...

  • Page 30: Preliminary Operational Check

    TABLE 2-4. PROGRAMMING CONTROL PORT I/O PIN ASSIGNMENTS (CONTINUED) SIGNAL NAME FUNCTION (FIGURE 2-6) Input signal. External voltage to control output voltage of unit. 0 to 10V d-c corre- EXT CV sponds to zero to full scale output voltage (see PAR. 3.3.39 to enable). Output signal.
  • Page 31 5. Rotate encoder to change the digits for adjustment. Turn clockwise to increase the value, counterclockwise to decrease the value. Tap encoder to move to the next digit. Continue until the maximum OVP value is displayed (e.g., 33.00 for 30V model). 6.

  • Page 32: Installation

    RACK MOUNTING 750W MODELS One or two (side by side) KLN 750W units can be mounted in a standard 19-inch rack (see Fig- ure 1-2 for outline dimensions). The units are 1U high and do not require any gaps between equipment above and below.

  • Page 33: Rack Mounting 1500W Models

    2. Separate the two units. Install two shoulder screws, flat washers and lockwashers (supplied with Kit) at two locations on one unit (two threaded holes, A, Figure 1-2). 3. Move the two units together and insert the shoulder screws into the keyhole-shaped opening in the other unit (two holes, B, Figure 1-2).

  • Page 34: Source Power Connections

    all applicable electric codes for safety grounding requirements are met. As a precaution, always connect the screw marked at the rear panel to proper earth ground. 2.5.2 SOURCE POWER CONNECTIONS Source power is connected to the power supply via three-wire input power using the source power cable supplied (see Table 1-4).

  • Page 35: Power Supply/Load Interface

    It is hoped that the preceding paragraphs will be of some assistance in most cases. For help in special applications or difficult problems, consult directly with Kepco's Application Engineering Department. 2.5.4...

  • Page 36: Load Connection Terminals For 1500W Models

    FIGURE 2-9. LOAD CONNECTION TERMINALS FOR 1500W MODELS FIGURE 2-10. LOAD CONNECTION TERMINALS FOR 3000W MODELS 2-10 KLN Series 022014...

  • Page 37: Load Connection Using Local Sensing

    Kepco strongly recommends the use of stranded (not solid) wire with (+) and (–) wires tightly twisted to reduce self-inductance; wire end ferrules are suggested to prevent fraying of the strands. NOTE REGARDLESS OF OUTPUT CONFIGURATION, EITHER LOCAL OR REMOTE OUT- PUT SENSE LINES SHOULD BE CONNECTED FOR OPTIMUM OPERATION.

  • Page 38: Load Connection Using Remote Sensing

    FIGURE 2-12. LOAD WIRE VOLTAGE DROP, EQUIVALENT SCHEMATIC DIAGRAM TABLE 2-5. MAXIMUM LOAD WIRE LENGTH FOR VOLTAGE DROP LESS THAN 1V Maximum Load Wire Length for Voltage drop less than 1V Wire Resistance* Diameter Load Current Load Cur- Load Current Load Cur- Load Current SIZE...

  • Page 39: Cooling

    COOLING The power devices used within the power supply are maintained within their operating tempera- ture range by means of internal heat sink assemblies and variable speed fans with air flow from front to back. There are no intake or exhaust ports at the top or bottom, permitting stacked rack mounting with no air gaps between stacked units.

  • Page 40: Setup For Remote Operation Via Usb)

    FIGURE 2-14. RS-485 CONNECTIONS 2.7.3 SETUP FOR REMOTE OPERATION VIA USB) Operation via a USB port is possible using the RS-485 port of the KLN and a commercially available USB to RS-485 adapter, isolated (not supplied) as shown in Figure 2-15. See PAR. 2.7.2 and Figure 2-14 for RS-485 operation.

  • Page 41: Setup For Remote Operation Via Lan

    SCPI programming is described in PAR. 3.7; Appendices A and B provide syntax for SCPI com- mon and subsystem commands and queries implemented in this unit. All the features described for Local Mode operation can be accomplished using remote SCPI commands. FIGURE 2-16.

  • Page 42: Multiple Unit Configurations

    MULTIPLE UNIT CONFIGURATIONS Parallel and series configurations of identical KLN units increase the rated current or voltage range of the power supply. Up to five units (including the master) can be connected in parallel to increase the current: I where N = number of units in MAX (one unit) MAX (parallel combination)

  • Page 43: Optional Series Connector Board

    FIGURE 2-19. OPTIONAL SERIES CONNECTOR BOARD FIGURE 2-20. PROGRAMMING CONTROL PORT CONNECTIONS FOR SERIES OPERATION 2-17 KLN Series 022014...

  • Page 44: Parallel Connections

    Board (see Table 1-4) illustrated in Figures 2-21 and 2-22. When connecting two units in paral- lel, connections can be further simplified by using the optional Parallel Connection Cable, Kepco P/N 518-0121 which replaces the optional Parallel Connector Board and two Programming Port cables shown in Figure 2-21.

  • Page 45: Optional Parallel Connector Board

    FIGURE 2-22. OPTIONAL PARALLEL CONNECTOR BOARD FIGURE 2-23. PROGRAMMING CONTROL PORT CONNECTIONS FOR PARALLEL OPERATION 2-19/(2-20 Blank) KLN Series 022014...

  • Page 47: Section 3 - Operation

    SECTION 3 - OPERATION GENERAL This section explains how to operate the KLN Power Supply. KLN Power Supplies feature three modes of operation: • Local Mode (see PAR. 3.3): This is the default operating mode, providing full access to all programming and readback functions via front panel displays, controls, and indica- tors.

  • Page 48: Power Supply Basics

    Refer to Table 3-1 and Figure 3-1 (750W), Figure 3-2 (1500W) or Figure 3-3 (3000W) for a description of front panel controls and indicators. FIGURE 3-1. KLN 750W SERIES FRONT PANEL FIGURE 3-2. KLN 1500W SERIES FRONT PANEL FIGURE 3-3.

  • Page 49: Front Panel Controls And Indicators

    TABLE 3-1. FRONT PANEL CONTROLS AND INDICATORS NUMBER CONTROL/INDICATOR FUNCTION (FIGURE 3-1) POWER ON/OFF Applies source power to unit circuit breaker A7CB1 Green LED, lights when unit is under remote control. Press SHIFT/LOCAL key to REMOTE status LED restore local control. Red LED, lights if a) OVP, OCP or OTP are triggered, b) command error, c) front ALARM panel operation error, d) emergency shutdown, or e) power supply failure.

  • Page 50: Turning The Power Supply On

    TABLE 3-1. FRONT PANEL CONTROLS AND INDICATORS (CONTINUED) NUMBER CONTROL/INDICATOR FUNCTION (FIGURE 3-1) Overvoltage Protection indicator. Lights if overvoltage error has occurred. Blinks while OVP indicator setting overvoltage protection value. CV indicator Lights when unit is in Constant Voltage mode Displays output current or setting value in Amperes.

  • Page 51: Factory Defaults

    • If an error occurs, the red (alarm) LED goes on. Refer to PAR. 3.3.50 to view the error code. 5. When the unit is turned on for the first time, the factory default conditions upon power up after a successful self test are as shown in Table 3-2. TABLE 3-2.

  • Page 52: Menu Structure

    3.2.2 MENU STRUCTURE Many of the KLN functions are accessed via MENU mode (see Table 3-3 for complete list of MENU functions). 1. Press SHIFT key to enter SHIFT mode. Verify blue LED lights, then press ENTER key to enter MENU mode. NOTE: Only limited Menu functions can be changed if the output is set to ON (see PAR.

  • Page 53: Menu Functions

    TABLE 3-3. MENU FUNCTIONS Voltage Display Current Display Description Reference 000 ~ 999 Error Code PAR. 3.3.50 DIR or ENT Output Mode Setting PAR. 3.3.8 P.ON LAST or OFF Power ON Mode PAR. 3.3.9 R.UPT 00.0 ~99.9 Ramp Up Time PAR.

  • Page 54: Front Panel Lockout

    TABLE 3-3. MENU FUNCTIONS Voltage Display Current Display Description Reference CC.M LOC or EXT Current set, either LOC (Local) using the front panel or EXT (External) PAR. 3.3.40 using the analog signal from the Programming Control port. 0000 Calibration password. PAR.

  • Page 55: Ovp/Ovc Operation And Recovery

    3.3.4 OVP/OVC OPERATION AND RECOVERY If the unit detects an overvoltage or overcurrent condition, the OVP or OCP indicator and the red ALARM indicator on the front panel light, the unit starts beeping and the output is set to OFF (output voltage and current are zero).

  • Page 56: Recalling Power Supply Output Settings

    3.3.7 RECALLING POWER SUPPLY OUTPUT SETTINGS To recall the setting previously stored in one of 16 memory locations (see PAR. 3.3.6) proceed as follows. When settings are recalled they can not exceed the OVP/OCP values in effect at the time of recall. Power supply settings can also be recalled using the Programming Control port (see PAR.

  • Page 57: Power On Setting

    3.3.9 POWER ON SETTING When the unit is powered on or recovering from a loss of mains supply, the output can be con- figured to restart with output status LAST or OFF. When set to LAST, output status is restored to the last output status (ON or OFF) before the unit was turned off.

  • Page 58: Memory Flag

    3.3.12 MEMORY FLAG There are 16 memory locations that can be used to store and recall power supply settings. MEM.F is used to limit the range of locations that can be accessed. For example, when the MEMORY FLAG is set as 05, it means that RECALL can only be executed from memory loca- tions 01 through 05.

  • Page 59: I/O Select

    3.3.15 I/O SELECT Used to select either RS-485 (standard) or optional GPIB or LAN interfaces for remote digital control. 1. Enter the menu (see PAR. 3.2.2 and Table 3-3) and rotate the encoder until Voltage display shows (I.O) to access I/O SELECT setting. 2.

  • Page 60: Rs-485 Address

    3.3.18 RS-485 ADDRESS Used to set the RS-485 address. Available addresses from A001 to A254. Default RS-485 address is A007. 1. Enter the menu (see PAR. 3.2.2 and Table 3-3) and rotate the encoder until Voltage display shows (485), then (GPIB) if GPIB option is installed, then (485) to access RS-485 ADDRESS setting.

  • Page 61: View/Set Address Commands Used With Dhcp And Dns Functions

    FIGURE 3-5. VIEW/SET ADDRESS COMMANDS USED WITH DHCP AND DNS FUNCTIONS 3-15 KLN Series 022014...

  • Page 62: Dns Function On/Off Control (Lan Interface Only)

    3.3.20 DNS FUNCTION ON/OFF CONTROL (LAN INTERFACE ONLY) Used to determine how the DNS address is assigned. Set this function to ON when connecting to the network via a DHCP server to allow the server to assign the DNS server address. Set this function to OFF when connecting the KLN directly to a computer.

  • Page 63: Set/View 2Nd Part Of Ip Address (Lan Interface Only)

    3.3.22 SET/VIEW 2ND PART OF IP ADDRESS (LAN INTERFACE ONLY) Used to set (if DHCP function is OFF) or view (if DHCP is ON) part 2 (nnn) of the 4-part IP address (xxx.nnn.xxx.xxx) where nnn can be set from 0 to 254. Refer to PAR. 3.3.19 to set DHCP on/off.

  • Page 64: Set/View 4Th Part Of Ip Address (Lan Interface Only)

    3.3.24 SET/VIEW 4TH PART OF IP ADDRESS (LAN INTERFACE ONLY) Used to set (if DHCP function is OFF) or view (if DHCP is ON) part 4 (nnn) of the 4-part IP address (xxx.xxx.xxx.nnn) where nnn can be set from 0 to 254. Refer to PAR. 3.3.19 to set DHCP on/off.

  • Page 65: Set/View 2Nd Part Of Subnet Mask Address (Lan Interface Only)

    3.3.26 SET/VIEW 2ND PART OF SUBNET MASK ADDRESS (LAN INTERFACE ONLY) Used to set (DHCP function is OFF) or view (DHCP is ON) part 2 (nnn) of the 4-part Subnet Mask address (xxx.nnn.xxx.xxx) where nnn is a number from 0 to 255. 1.

  • Page 66: Set/View 1St Part Of Gateway Address (Lan Interface Only)

    3.3.29 SET/VIEW 1ST PART OF GATEWAY ADDRESS (LAN INTERFACE ONLY) Used to set (DHCP function is OFF) or view (DHCP is ON) part 1 (nnn) of the 4-part Gateway address (nnn.xxx.xxx.xxx) where nnn is a number from 1 to 223. The default gateway address is 192.168.0.100.

  • Page 67: Set/View 4Th Part Of Gateway Address (Lan Interface Only)

    3.3.32 SET/VIEW 4TH PART OF GATEWAY ADDRESS (LAN INTERFACE ONLY) Used to set (DHCP function is OFF) or view (DHCP is ON) part 4 (nnn) of the 4-part Gateway address (xxx.xxx.xxx.nnn) where nnn is a number from 1 to 254. Enter the menu (see PAR.

  • Page 68: Set/View 3Rd Part Of Dns Address (Lan Interface Only)

    3.3.35 SET/VIEW 3RD PART OF DNS ADDRESS (LAN INTERFACE ONLY) Used to set (DNS function is OFF) or view (DNS is ON) part 3 (nnn) of the 4-part DNS address (xxx.xxx.nnn.xxx) where nnn is a number from 1 to 254. 1.

  • Page 69: External Control Of Output On/Off

    3.3.38 EXTERNAL CONTROL OF OUTPUT ON/OFF This function enables or disables external control of output on/off using the Programming Con- trol port. 1. Enter the menu (see PAR. 3.2.2 and Table 3-3) and rotate the encoder until Voltage display shows (EO.C) to access EXTERNAL OUTPUT ON/OFF CONTROL function.

  • Page 70: Calibration Access

    3.3.41 CALIBRATION ACCESS Allows access to calibration mode which is password protected. 1. Enter the menu (see PAR. 3.2.2 and Table 3-3) and rotate the encoder until Voltage display shows (CAL) to access CALIBRATION mode. 2. Press ENTER key to access setting (password). 3.

  • Page 71: View 2Nd Part Of Mac Address (Lan Interface Only)

    3.3.46 VIEW 2ND PART OF MAC ADDRESS (LAN INTERFACE ONLY) Used to view second two hex numbers (cc.dd) of the 6-character MAC address (aa.bb.cc.dd.ee.ff) where cc and dd are Hex numbers from 00 to FF. The default MAC address is 70.60.42.00.00.00. 1.

  • Page 72: Ip Address Reset (Rst1)

    3.3.49 IP ADDRESS RESET (RST1) The IP Address reset function resets the IP address to the default: 192.168.0.100/255.255.0.0 and clears both Gateway and DNS addresses. 1. Enter the menu (see PAR. 3.2.2 and Table 3-3) and rotate the encoder until Voltage display shows (RST1) to access RESET IP ADDRESS function.

  • Page 73: Discontinuing Series Operation

    • The alarm status function at pin 9 (ALARM) of the Control Programming port is functional for both Master and Slave. If the Master alarm status is active, the Master and Slave will be shut down. If the Slave alarm status is active, only the Slave will be shut down. •...

  • Page 74: Parallel Operation

    3.4.3 PARALLEL OPERATION • The front panel current displays of the Master and Slave(s) each show the output current of the individual units. The front panel voltage display of the Master shows the output voltage for the parallel combination. • Front panel keys of slave(s) are disabled, except that SHIFT and ENTER keys still allow access to the MENU functions (see PAR.

  • Page 75: Discontinuing Parallel Operation

    3.4.4 DISCONTINUING PARALLEL OPERATION To allow units connected in parallel to function independently, proceed as follows: 1. Turn off power to Slaves, then Master. 2. Disconnect all parallel connections shown in Figure 2-21. 3. If applicable, disconnect Programming Control Port connections shown in Figure 2-23. 4.

  • Page 76: Remote Control Of Output Voltage Using An Analog Signal

    3.5.3 REMOTE CONTROL OF OUTPUT VOLTAGE USING AN ANALOG SIGNAL Connect an analog voltage, adjustable from 0 to +10V d-c (corresponding to 0 to rated output voltage) between pin 16 (+) and pin 26 (–) of the Programming Control Port. The analog voltage will control the output only after the function is enabled by setting Constant Voltage control to EXT from the front panel (see PAR.

  • Page 77: Monitor Unit Status

    3.5.6.2 MONITOR UNIT STATUS The following status signals are open collector TTL signals via an optocoupler referenced to Programming Control port pin 8: maximum voltage is 30V, maximum current is 8mA. See Figure 3-7. Status noted in Figure 3-7 is present when signal is TTL high, absent when TTL low. STATUS PIN DESCRIPTION Unit power on...

  • Page 78: Ieee 488 (Gpib) Bus Protocol

    3.6.2.1 IEEE 488 (GPIB) BUS PROTOCOL Table 3-4 defines the interface capabilities of the KLN power supply (Talker/Listener) relative to the IEEE 488 (GPIB) bus (reference document ANSI/IEEE Std 488: IEEE Standard Digital Interface for Programmable Instrumentation) communicating with a Host Computer—Controller (Talker/Lis- tener).

  • Page 79: Ieee 488 (Gpib) Bus Command Mode Messages

    TABLE 3-5. IEEE 488 (GPIB) BUS COMMAND MODE MESSAGES MESSAGE MNEMONIC COMMENTS DESCRIPTION Attention Received Data accepted Received or Sent Data Valid Received or Sent Device Clear Received Interface Clear Received My Listen Address Received My Talk Address Received Other Talk Address Received Ready for Data Received or Sent...

  • Page 80: Lan Operation (If Option Installed)

    3.6.3 LAN OPERATION (IF OPTION INSTALLED) 1. Connect the KLN to the computer (see PAR. 2.7.5 for LAN connections) 2. At the KLN front panel, set the I/O interface to LAN (see PAR. 3.3.15) 3. At the computer, enter the KLN IP address in a web browser. The factory default IP Address is 192.168.0.100.

  • Page 81: Network Status

    3.6.3.1 NETWORK STATUS Clicking Network Status at the top left shows the Network Status Page (see Figure 3-9). Data displayed can not be changed from this page. FIGURE 3-9. NETWORK STATUS PAGE 3.6.3.2 VIEWING AND/OR CHANGING IP CONFIGURATION Clicking Network Configuration brings up the Log in screen (see Figure 3-10. Enter the pass- word (admin is the default password) and click SUBMIT to continue and view the Network Con- figuration Page (see Figure 3-11).

  • Page 82: Network Configuration Page

    FIGURE 3-11. NETWORK CONFIGURATION PAGE The four fields of the top section allow the user to set Host Name, Description and Domain as well as enable or disable mDNS Discovery. Using mDNS allows the KLN to determine the IP address of a given host (a host name) without the direct help of a centralised DNS server. Once changes have been made, immediately below the top section click on Cancel to revert to the previous settings, or Apply to apply the changes.

  • Page 83: Changing Lan Password

    3.6.3.3 CHANGING LAN PASSWORD When operating the KLN via the LAN for the first time, click Security at the top left of the Wel- come Page to bring up the Change Password screen (Figure 3-12). If desired, change the old password from the default (admin) to one of your choosing.

  • Page 84: Operation Via Hyperterminal

    3.6.3.5 OPERATION VIA HYPERTERMINAL. HyperTerminal can be used to operate the unit remotely via the LAN connection or it can be used to verify the LAN connection is operating properly. 1. From the computer, launch HyperTerminal (e.g., Start - Programs - Accessories - Communi- cations - HyperTerminal) and key in the name of the connection, e.g., KLN 20-38E.

  • Page 85: Scpi Programming

    4. Send *idn? query to verify unit is operating properly via the LAN interface. A typical response for a successful LAN connection is: KEPCO,KLN 20-38E,500354,01.60 5. Send SCPI commands (see PAR. 3.7 and Appendix A and B) to drive the unit.

  • Page 86: Scpi Messages

    3.7.1 SCPI MESSAGES There are two kinds of SCPI messages: program messages from controller to power supply, and response messages from the power supply to the controller. Program messages consist of one or more properly formatted commands/queries and instruct the power supply to perform an action;...

  • Page 87: Understanding The Command Structure

    3.7.4 UNDERSTANDING THE COMMAND STRUCTURE Understanding the command structure requires an understanding of the subsystem command tree illustrated in Figure 3-17. The “root” is located at the top left corner of the diagram. The parser goes to the root if: •...

  • Page 89: Section 4 - Calibration

    SECTION 4 - CALIBRATION GENERAL This section contains the calibration instructions for the Power Supply. It is recommended that the user be familiar with Local Mode operation (PAR. 3.3) before calibrating the unit. CAUTION: IT IS RECOMMENDED THAT CALIBRATION BE PERFORMED ONLY BY AUTHORIZED PERSONNEL FAMILIAR WITH ELECTRONIC TEST AND CALI- BRATION EQUIPMENT.

  • Page 90: Calibration Setup

    FIGURE 4-1. CALIBRATION SETUP 4. Turn on power to the KLN power supply. 5. At KLN front panel, press SHIFT, then press V/OVP key. Use encoder to set Overvoltage protection (see PAR. 3.3.2) to maximum (110% of rated voltage). 6. Press SHIFT, then press A/OCP key. Use encoder to set Overcurrent protection (see PAR. 3.3.3) to maximum (110% of rated current).

  • Page 91: Current Calibration Procedure

    18. Enter the new Voltage Deviation ratio by rotating encoder until Current display shows desired setting for blinking digit. Tap encoder to go to next digit and repeat for all digits, then press ENTER to confirm. NOTE: If necessary to recalibrate, set Voltage Deviation Ratio to 1.000 and repeat Voltage Calibration procedure.

  • Page 93: Appendix A - Scpi Common Command/Query Definitions

    The character string contains the following fields: <Manufacturer>, <Model>, <Serial Number>, <Firmware revision> where: <Manufacturer> = KEPCO, <Model> = KLN model number, <Serial Number> = SSSSSS <Firmware revision=n.m, (e.g, 1.0).

  • Page 95: Numerical Values

    This appendix defines the SCPI subsystem commands and queries used with the KLN power sup- ply. Subsystem commands are defined in PAR. B.3 through B.62. Table B-1 provides a quick refer- ence of all SCPI subsystem commands and queries used in the KLN 750W. TABLE B-1. SCPI SUBSYSTEM COMMAND/QUERY INDEX COMMAND PAR.

  • Page 96: Disp:contrast? Query

    DISP:CONT? DISP:CONTrast? QUERY Syntax: Short Form: DISP:CONT? Long Form: DISPlay:CONTrast Description: Returns the brightness level set by DISP:CONT. Return Format: <NR1> FETC? FETCh? QUERY Syntax: Short Form: FETC? Long Form: FETCh? Description: Measures actual output voltage and current. The query performs a measurement and returns the value of DC output current in amperes and DC output voltage in volts.

  • Page 97: Pon Command

    OUTP OUTPut COMMAND Syntax: Short Form: OUTP { ON | OFF| 1 | 0 } Long Form: OUTPut { ON | OFF| 1 | 0 } Description: Enables or disables the power supply output. To enable DC power supply output: <ON> or 1. To disable DC power supply output: <OFF> or 0. Argument: <ON>...

  • Page 98: Ce :Curr Ent? Query

    SOUR:CURR B.14 SOURce:CURRent COMMAND Syntax: Short Form: SOUR:CURR <NRf> Long Form: SOURce:CURRent <NRf> Description: Sets the output current value. Maximum output current is rated current; minimum current is zero. Argument: <NRf> is a value in the range from 0 to rated current of unit. Rated voltage and current are defined by model (e.g., for KLN 6-100, rated voltage is 6V, rated current is 100A).

  • Page 99: Ce :List:dtim E? Query

    SOUR:CURR:PROT:TRIP? B.20 SOURce:CURRent:PROTection:TRIPped? QUERY Syntax: Short Form: SOUR:CURR:PROT:TRIP? Long Form: SOURce:CURRent:PROtection:TRIPped? Description: Returns a 1 if the protection circuit is tripped and a 0 if it not tripped. Return Format: <NRf> Example: SOURce:CURRent:PROTection:TRIPped? Returns 0 if OCP was not executed, 1 if OCP was exe- cuted.

  • Page 100: Query

    SOUR:MEM:CURR:X? B.27 SOURce:MEMory:CURRent:X? QUERY Syntax: Short Form: SOUR:MEM:CURR:X? Long Form: SOURce:MEMory:CURRent:X? Description: Returns current value stored in memory location X (in amperes). Return Format: <NRf> Example: SOURce:MEMory:CURRent:5? returns 1.16000E+01 (Current stored in memory location 3 is 11.6A). SOUR:MEM:LIST:X? B.28 SOURce:MEMory:LIST:X? QUERY Syntax: Short Form: SOUR:MEM:LIST:X? Long Form: SOURce:MEMory:LIST:X?

  • Page 101: Ce :Volt Age? Query

    SOUR:VOLT? B.33 SOURce:VOLTage? QUERY Syntax: Short Form: SOUR:VOLT? Long Form: SOURce:VOLTage? Description: Indicates programmed output voltage (in volts). Return Format: <NRf> Example: SOURce:VOLTage? returns 3.00000E+01 to indicate output voltage is programmed to 30V. SOUR:VOLT:LIM:LOW B.34 SOURce:VOLTage:LIMit:LOW COMMAND Syntax: Short Form: SOUR:VOLT:LIM:LOW <NRf> { MIN | MAX } Long Form: SOURce:VOLTage:LIMit:LOW <NRf>...

  • Page 102: Beep ? Query

    SOUR:VOLT:PROT:TRIP? B.38 SOURce:VOLTage:PROTection:TRIPped? QUERY Syntax: Short Form: SOUR:VOLT:PROT:TRIP? Long Form: SOURce:VOLTage:PROtection:TRIPped? Description: Returns a 1 if the protection circuit is tripped and a 0 if not tripped. Return Format: <NRf> Example: SOURce:VOLTage:PROTection:TRIPped? Returns 0 if OVP was not executed, 1 if OVP was exe- cuted.

  • Page 103: Dns ? Query

    SYST:COMM:LAN:DNS? B.44 SYSTem:COMMunicate:LAN:DNS? QUERY Syntax: Short Form: SYST:COMM:LAN:DNS? Long Form: SYSTem:COMMunicate:LAN:DNS? Description: Returns the DNS Address. Return Format: “<address>” is text format in xxx.xxx.xxx.xxx Example: SYST:COMM:LAN:DNS? returns DNS address “8.8.8.8”. SYST:COMM:LAN:DNS:AUTO B.45 SYSTem:COMMunicate:LAN:DNS:AUTO COMMAND Syntax: Short Form: SYST:COMM:LAN:DNS:AUTO <bool> { ON | OFF | 1 | 0 } Long Form: SYSTem:COMMunicate:LAN:DNS:AUTO <bool>...

  • Page 104: Ip ? Query

    SYST:COMM:LAN:IP? B.50 SYSTem:COMMunicate:LAN:IP? QUERY Syntax: Short Form: SYST:COMM:LAN:IP? Long Form: SYSTem:COMMunicate:LAN:IP? Description: Indicates IP address assigned for communication vi the LAN interface. Return Format: <address> is text in the format xxx.xxx.xxx.xxx Example: SYST:COMM:LAN:IP? returns 192.168.0.100 to indicate the IP address is set to 192.168.0.100. SYST:COMM:LAN:IPAD B.51 SYSTem:COMMunicate:LAN:IPADdress COMMAND Syntax:...

  • Page 105: B-2 Error Codes

    SYST:COMM:LAN:SMAS? B.56 SYSTem:COMMunicate:LAN:SMAS? QUERY Syntax: Short Form: SYST:COMM:LAN:SMAS?Long Form: SYSTem:COMMunicate:LAN:SMAS? Description: Indicates Subnet Mask address assigned for communication via the LAN interface. Return Format: <address> is text in the format xxx.xxx.xxx.xxx Example: SYST:COMM:LAN:IP? returns 255.255.0.0 to indicate the Subnet Mask address is set to 255.255.0.0.

  • Page 106: Kloc K Command

    TABLE B-2. ERROR CODES (CONTINUED) 78, “Software OCP” Software overcurrent protection error: The output current exceeds the set OCP value (adjustable manually or remotely) for more than 1 second. 79, “AC Fault“ Ac line input abnormal One or more fan failed. 83, “FAN failed”...

  • Page 107: Loc Al Command

    SYST:LOC B.62 SYSTem:LOCal COMMAND Syntax: Short Form: SYST:LOC Long Form: SYSTem:LOCal Description: Sets the power supply to be in local mode. The front panel [REMOTE] indicator goes off and the front panel keys and encoder are enabled. Argument: None Example: SYSTem:LOCal puts the power supply in local mode.

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