1657 1500VA AC Power Source
Contents
1. 18 4 3 REMOTE PROTOCO Sicuani Rn 19 CHARTER DS rei TI 28 5 1 MAINTENANCE 29 5 2 TROUBLESHOOT GUIDE illo 29 SERVICE INFORMATION cc Rn V Oi 31 LIMITED ONE YEAR WARRANTY un 31 CHAPTER 1 General Information 1 1 INTRODUCTION 1 2 FEATURES 1 3 SPECIFICATIONS 1 1 INTRODUCTION The 1657 is an AC power source that provides high conversion efficiency and low distortion output It has a universal line output terminal and has a built in PFC to provide an input power factor of 0 99 at full load The output AC provides up to 1500 VA and can be set to two voltage ranges 135 V and 270 V Front panel buttons and control knob is available for quick voltage and frequency set RS232 interface port is provided the rear panel for remote programmability 1 2 FEATURES e Low distortion sine wave output with programmable frequency and voltage Selectable two output voltage ranges 135VAC or 270VAC Settable frequency from 45Hz to 450 Hz Built in torroidal isolation transformer Automatic protection against overload short circuit and over temperature Bright VFD display Remote Programming through RS 232 serial interface Built in PFC provides 0 99 input power factor Conforms to EN 55022 class A safety standard EN 609502. lt NR1 gt Digits with an implied decimal point assumed at the right of the least significant digit Example 273 lt NR2 gt Digits with an explicit decimal point Example 0273 lt NR3 gt Digits with an explicit decimal point and an exponent Example 2 73E 2 lt Bool gt Boolean Data Example 0 1 0 OFF 1 lt Nrf gt Extended format that includes lt NR1 gt lt NR2 gt and lt NR3 gt Examples 273273 2 73E2 lt Nrf gt Expanded decimal format that includes lt NRf gt and MINMAX Examples 273 73 2 73E2 MAX MIN and MAX are the minimum and maximum limit values that are implicit in the range specification for the parameter Notations lt sp gt Indicates a null or space character 0x20 OUTPUT SUBSYSTEM OUTP This command enables or disables the output Turns the output ON or OFF Command Syntax OUTP STAT lt bool gt Parameters 0 1 ON OFF Examples OUTP lt sp gt OFF OUTP lt sp gt 1 OUTP lt sp gt 0 OUTP lt sp gt ON Query Syntax OUTP STAT Returned Parameters ON OFF SOURCE SUBSYSTEM SOUR VOLT LEV IMM AMP This command programs the ac rms output voltage level of the ac source 19 Note Any value programmed above or below the valid range of the instrument would not be accepted and would be reported as error Command Syntax SOUR VOLT LEV IMM AMP lt Nrf gt Parameters 0 to 270 MAX MIN Unit V Volts Examples VOLT lt sp gt 230 VOLT LEV l
3. Model 1657 AC Power Source USER MANUAL BK PRECISION gt sur Y 2 L V A RANGE 1657 AC POWER SOURCE 1500 a 2 x foe EA 2 2 N LOCAL E gt gt Hz W RANGE c gt c EN 270V POWER OUTPUT O Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of operation service and repair of this instrument Before applying power follow the installation instructions and become familiar with the operating instructions for this instrument If this device is damaged or something is missing contact the place of purchase immediately This manual contains information and warnings that must be followed to ensure safe operation as well as maintain the meter in a safe condition GROUND THE INSTRUMENT To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground This instrument is grounded through the ground conductor of the supplied three conductor ac power cable The power cable must be plugged into an approved three conductor electrical outlet Do not alter the ground connection Without the protective ground connection all accessible conductive parts includi
4. register value Related Commands STAT GUES COND STAT OPER ENAB This command and its guery set and read the value of the Operation Enable register This register is a mask for enabling specific bits from the Operation Event register to set the operation summary bit OPER of the Status Byte register The operation summary bit is the logical OR of all enabled Operation Event register bits Command Syntax STAT OPER ENAB lt sp gt lt NRf gt Parameters 0 to 32767 MAX MIN Default Value 0 Examples STAT OPER ENAB lt sp gt 32 STAT OPER ENAB lt sp gt 1 Query Syntax STAT OPER ENAB Returned Parameters lt NR1 gt register value Related Commands STAT OPER STAT QUES EVEN This query returns the value of the Questionable Event register The Event register is a read only register which holds latches all events that are passed by the Questionable NTR and or PTR filter Reading the Questionable Event register clears it Query Syntax STATus QUEStionable EVEN Parameters None Examples STAT QUES EVEN Returned Parameters lt NR1 gt register value Related Commands CLS 23 STAT QUES COND This query returns the value of the Questionable Condition register That is a read only register which holds the real time unlatched questionable status of the ac source Query Syntax STAT QUES COND Parameters None Examples STAT QUES COND Returned Parameters lt NR1 gt register value Related Commands
5. compliant to SCPI standards Command Syntax SYST CONFIG Parameters HI LOW RST Value HI Examples SYST CONFIG lt sp gt HI Query Syntax SYST CONFIG Returned Parameters HI LOW Related Commands VOLT RANG STATUS SUBSYSTEM STAT TRIP This command returns the current status of Trip condition It returns 0 if no trip has occurred and returns a string response for appropriate trip condition Query Syntax STAT TRIP Parameters None Examples STAT TRIP Returned Parameters lt string NR1 gt 22 STAT PRES This command sets the registers of the status groups to their power on values These values are Enable Registers all bits set to 0 OFF Command Syntax STAT PRES Parameters None Examples STAT PRES STAT OPER EVEN This query returns the value of the Operation Event register The Event register is a read only register which holds latches all events that are passed by the Operation NTR and or PTR filter Reading the Operation Event register clears it Query Syntax STAT OPER EVEN Parameters None Examples STAT OPER EVEN Returned Parameters lt NR1 gt register value Related Commands CLS STAT OPER COND This query returns the value of the Operation Condition register That is a read only register which holds the real time unlatched operational status of the ac source Query Syntax STAT OPER COND Parameters None Examples STAT OPER COND Returned Parameters lt NR1 gt
6. 1 3 SPECIFICATIONS The operation specifications are listed below All specifications are tested at the output terminal with temperature at 25 C 5 C nominal input of 120V AC 230V and output of 250VAC 125VAC and at 50 2 60 2 with a resistive load Model 1657 INPUT Voltage 90 264 VAC single phase 100 264 VAC for continuous full load operation Frequency 47 63 Hz Current 20A Max Power factor 0 99 typical 115 VAC 60 Hz Full Load Efficiency gt 85 at full load amp nominal line input OUTPUT Output Power Maximum Power 1500 VA Accuracy 2 of F S Resolution 1W Output Voltage Low Range 0 135 Vrms High Range 0 270 Vrms Accuracy 1 of F S Resolution 0 1V Distortion lt 2 220 VAC 50 Hz Full Load Worse case lt 5 270VAC 450 Hz Full Load Line Regulation 0 1 of F S Load Regulation 1 of F S Temp Coefficient 0 05 per C from 25 C Output Current Low Range 135 V 12 Arms Limited to 1500 VA High Range 270 6 Arms Limited to 1500 VA Accuracy 1 of F S Resolution 0 01 Crest Factor 3 Power Factor 0 8 Lag to 0 8 Lead Output Frequency Range 45 450 Hz Accuracy 0 2 of F S Resolution 0 01 Hz Supplemental Characteristics Protections Output Trip with Alarm indication for OL SC OTP Output Connection Universal socket Cooling Inte
7. Power Source User Manual Power Cord type IEC320 C19 Please locate each item from the original packaging and contact B amp K Precision immediately if something is missing CHAPTER 3 Operating Instructions 3 1 FRONT PANEL DESCRIPTION 3 2 REAR PANEL DESCRIPTION 3 3 INITIAL CHECK 3 4 OPERATING INSTRUCTIONS IN LOCAL MODE 3 1 FRONT PANEL DESCRIPTION PRECISION o BK gt 1657 AC POWER SOURCE 1500 NO No A LOCAL Hz RANGE POWER lt O a o lt Power ON OFF switch VFD display Adjustment knob V SET button FREQ SET button LOCAL button RANGE button Output ON OFF button RESET button 10 Alarm LED indicator 11 Output On Off LED indicator VIANA 3 2 REAR PANEL DESCRIPTION JULUVUUU 2 RS232 DB 9 serial port Universal socket AC output 1500 VA Max Earth ground terminal Fuse holder 20 A type F AC Line input type IEC320 C19 AWN 3 3 INITIAL CHECK WARNING BEFORE TURNING ON THE INSTRUMENT ALL PROTECTIVE EARTH TERMINALS EXTENSION CORDS AND DEVICES CONNECTED TO THE INSTRUMENT MUST BE CONNECTED TO A PROTECTIVE EARTH GROUND ANY INTERRUPTION OF THE PROTECTIVE EARTH GROUND WILL CAUSE A POT
8. VOLTAGES MAY ALSO BE FLOATING ABOVE BELOW CHASSIS GROUND CAUTION Before applying power verify that the product is set to match with the line voltage Ensure that the AC power line ground is properly connected to the AC Source input connector Similarly other power ground lines including those to application and maintenance equipment MUST be properly grounded for both personnel and equipment safety Always ensure that AC input power is de energized prior to connecting or disconnecting the power cable Similarly the AC Source mains switch must be switched OFF prior to connecting or disconnecting LOADS In normal operation the operator does not have access to hazardous voltages within the chassis However depending on the application configuration HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally available on the output terminals if it is connected to a load The User must ensure that the Source Output lines are properly labeled as to the SAFETY HAZARDS and any that inadvertent contact with hazardous voltages is eliminated For authorized service technicians only Guard against risks of electrical shock during open cover checks by NOT TOUCHING any portion of the electrical circuits Even when power is OFF capacitors are well known to retain an electrical charge Please allow sufficient time for discharge of storage elements before opening the cover Use SAFETY GLASSES during open cover checks to avoid personal injury by any sudden
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10. component failure Always replace the fuse with the appropriate rating only Do not operate the instrument in the presence of flammable gases or fumes TABLE OF CONTENTS Safety SUMMALY We ee Ros Ate Ree eget ae a Eee aie ee Be Bt Bie ee ee 1 CHAPTER lisa Sid ois oa oa 4 1 1 INTRODUCTION zisk ot ai rr 5 1 2 FEATURES cometiste 5 1 3 SPECIFICATIONS r ss 5 CHAPTER Binaria a ad HR 7 2 1 NAAA 82828 cheek ha DR 8 2 2 IN A e a i in nu 8 2 3 INPUT POWER REQUIREMENTS cusco aan een 8 2 4 INSTALLATION A deep eon nn 9 2 5 TEST EQUIPMENT REQUIREMENTS 10 2 6 PACKAGE CONTENTS i eile na ees 10 CHAPTER tie kts 11 3 1 FRONT PANE DESCRIPTION tii pee eee tae et 12 3 2 REAR PANEL DESCRIPTION NR 12 3 3 INITIAL CHECK a a a hh Ba 13 33 1 Default Settings iii V is 13 3 3 2 Initial Display ROO 13 3 4 OPERATING INSTRUCTIONS IN LOCAL MODE 14 34 1 Setting Voltage and til 14 34 2 Local Mode setting cisco aes oe Bie Rap RA AL En lesben 16 343 Range Selection cursa ek is eo ee a a i ae 16 344 iii 16 CHAPTER Ain nt nl b ethan ae eda 17 4 1 RS232 INTERFACE covers 18 4 2 CONNECTION ceil
11. is clearly indicated in the VFD display above REM LOC in which REM indicates remote mode and LOC indicates local mode If the unit received any of the set commands through the RS232 port it will automatically go into REM mode When this happens front panel keys will be disabled except for the LOC button To set instrument back to local mode press the LOC key The display will then show LOC to indicate local mode Note READ command will not automatically set instrument into remote mode 3 4 3 Range Selection User can select the output voltage range by using the RANGE switch This will allow the user to select between 135 V range or 270 Vrange The selected output voltage range is clearly displayed on the VFD display below RANGE label as LOW for 135V range and HI for 270V range CAUTION DISCONNECT THE LOAD CONNECTED TO THE OUTPUT TERMI NALS BEFORE CHANGING THE RANGE 3 4 4 Alarm This is a red LED indicating OL over load SC short circuit or OT over temperature status This LED will remain on even if any of the protection status disappears The alarm can be reset by pressing the RESET switch on the front panel CHAPTER 4 Remote Interface 4 1 RS232C INTERFACE 4 2 CONNECTION DETAILS 4 3 REMOTE PROTOCOLS 4 1 RS232C INTERFACE The 1657 AC power supply has a RS232 interface in the rear panel for remote communication The serial settings are shown below BAUD RATE 9600 DATA BITS 8 BITS STOP BITS 1 B
12. sequential and are completed before the next command is executed Overlapped commands are executed in parallel with other commands Commands that affect output voltage or state relays and trigger actions are overlapped with subsequent commands sent to the AC source command provides notification that all overlapped commands have been completed All triggered actions are completed and the trigger system returns to the idle state does not prevent processing of subsequent commands but Bit 0 will not be set until all pending operations are completed The query causes the interface to place an ASCII 1 in the Output Queue when all pending operations are completed Command Syntax OPC Parameters None Query Syntax OPC Example OPC Returned Parameters lt NR1 gt Related Commands RST This command resets the instrument to the following factory defined states without performing software reset 1 Voltage 10V 25 2 Frequency 50 Hz 3 Output Range HI 270V 4 Mode of Operation Local Note RST does not clear any of the status registers or the error queue and does not affect any interface error conditions Command Syntax RST Parameters None Example RST SRE This command sets the condition of the Service Request Enable Register This register determines which bits from the Status Byte Register are allowed to set the Master Status Summary MSS bit and the Request for Servic
13. ENTIAL SHOCK HAZARD 3 3 1 Default Settings The default factory setting for the output parameters are as follows VOLTAGE 10V FREOUENCY 50 Hz RANGE 270 V OUTPUT STATUS OFF OPERATION MODE LOC NOTE Whenever range is changed between 135 V and 270 V output will automatically switch to OFF for safety 3 3 2 Initial Display Flip the power switch to turn on the power and the front panel display will turn on It will first show the model number then firmware version then output status and then the actual output parameters after one second V A RANGE B amp K PRECISION ACS1657 Hz REM LOC After 1 second V A RANGE 2 REM LOC V A RANGE 10 0 HI 60 0 LOC Hz W REM LOC After 1 second V A RANGE 0 0 0 00 LOW 60 0 0 00 LOC Hz W REM LOC There is a small delay that follows to set the output voltage to the last set value Approx 3 to 5 Seconds After the output voltage gets stabilized users can then set the voltage and or frequency to their desired values NOTE Allow sufficient OFF time Minimum 2 Minutes before turning ON again if the output is TRIP ed by abnormal condition Over temperature and Over load 3 4 OPERATING INSTRUCTIONS IN LOCAL MODE 3 4 1 Setting Voltage and Frequency Setting Output Voltage To set the voltage for the output follow the steps below 1 Press V SET button on the front panel to go into Voltage
14. IT PARITY NO PARITY HANDSHAKI NG NO HANDSHAKING The Data format is shown as ONE NO 1 START 8 DATA BITS PARITY STOP BIT BIT BIT 4 2 CONNECTION DETAILS The RS232 interface is a 9 pin D type male connector DB 9 on the rear panel Users must use a Null modem or Cross over serial DB 9 cable in order to communicate with the instrument The instrument uses only 3 of the pins and their assignments are shown below PIN NUMBER DESCRIPTION PIN 2 Transmit Data TXD PIN 3 Receive Data RXD PIN 5 Ground GND 9 PIN D Type MALE Connector 190000 NOTE Since the RS232 communication does not use handshaking the DSR input of the controller should be tied to a signal that is always logical TRUE However this implies that your BUS CONTROLLER must always be ready to accept the data 4 3 REMOTE PROTOCOLS This section describes the complete command set for remote communication via RS232 interface It specifies the syntax of each command and all of them will explicitly take the unit to REM mode of operation TERMINATION CHARACTER All commands transmitted between the instrument and the computer are terminated with a Linefeed LF character n or Carriage Return CR character r or 0x0D can also be used to terminate commands sent to the instrument but all returned strings from query strings will terminate with LF character SCPI Commands Numerical data Formats
15. LT SYST CONFIG CAUTION ALWAYS DISCONNECT THE LOAD ON THE OUTPUT TERMINALS BEFORE CHANGING THE RANGE MEASUREMENT SUBSYSTEM MEAS SCAL VOLT AC This query returns the AC rms voltage being sourced at the output terminals Query Syntax MEAS SCAL VOLT AC Parameters None Unit V Volts Examples MEAS SCAL VOLT AC MEAS VOLT AC Returned Parameters lt NR2 gt V 20 MEAS SCAL POW AC REAL This query returns the power in watts Query Syntax MEAS SCAL POW AC REAL Parameters None Unit W Waitt Examples MEAS SCAL POW AC MEAS POW AC Returned Parameters lt NR2 gt W MEAS SCAL CURR AC This query returns the AC current in amperes Command Syntax MEAS SCAL POW AC REAL Parameters None Unit A amperes Examples MEAS SCAL CURR AC MEAS CURR AC Returned Parameters lt NR2 gt A MEAS SCAL FREQ This query returns the output current in amperes Query Syntax MEAS SCAL FREQ Parameters None Unit Hz Hertz Examples MEAS SCAL FREQ MEAS FREQ AC Returned Parameters lt NR2 gt Hz SYSTEM COMMANDS SYST ERR This query returns the next error number followed by its corresponding error message string from the remote programming error queue The queue is a FIFO first in first out buffer that stores errors as they occur As it is read each error is removed from the queue When all errors have been read the query returns 0 No Error If more errors are accumulated than th
16. Poor measurement As components age Periodic calibration is of V and W there will be deviation in required measurement accuracies as a result Contact B amp K Precision for service information Distorted output 1 The AC source output voltage is too low 2 Poor power factor load connected at the output 1 Program higher output voltage 2 Check the power factor of the load No Output and Alarm 1 Ambient temperature is too high 2 Air vent path obstructed 1 Operate the unit between 0 40 C 2 Remove any object or debris that may prevent proper ventilation through the air path No Output and Alarm 1 The output current is higher than specified limit 2 Output Short circuit 1 Remove the overload 2 Remove the short or Remove the load No Output No display The AC source line input voltage is too low or too high 1 Measure the input voltage and regulate it if it exceeds the specified input range 29 2 Over voltage may damage internal circuitry Contact B amp K Precision for service information Cannot control AC Source by remote RS232 interface RS232 cable is loose at the rear port or wrong serial port settings on the PC software or interface 30 Check connection and tighten the screws Be sure to use 9600 baudrate no parity 8 data bits 1 stop bit and no flow control as the serial settings for initial
17. STAT OPER COND STAT QUES ENAB This command sets or reads the value of the Questionable Enable register This register is a mask for enabling specific bits from the Questionable Event register to set the questionable summary QUES bit of the Status Byte register This bit bit 3 is the logical OR of all the Questionable Event register bits that are enabled by the Questionable Status Enable register Command Syntax STAT QUES ENAB lt NRf gt Parameters 0 to 32767 MAX MIN Default Value 0 Examples STAT QUES ENAB lt sp gt 32 STAT QUES ENAB lt sp gt 1 Query Syntax STAT QUES ENAB Returned Parameters lt NR1 gt register value Related Commands STAT QUES CLS This command clears the following registers 1 Standard Event Status 2 Operation Status Event 3 Questionable Status Event 4 Status Byte 5 Error Queue Command Syntax CLS Parameters None ESE This command programs the Standard Event Status Enable register bits The programming determines which events of the Standard Event Status Event register see ESR are allowed to set the ESB EventSummary Bit of the Status Byte register A 1 in the bit position enables the corresponding event All of the enabled events of the Standard Event Status Event Register are logically ORed to cause the EventSummary Bit ESB of the Status Byte Register to be set The query reads the Standard Event Status Enable register Bit Configuration of Standard Event Statu
18. Set mode The display should look like the figure below 14 V A RANGE 10 0 0 05 HI 50 0 1 LOC Hz REM LOC 2 Use the rotary knob to adjust the digit selected by the cursor which by default will appear under the least significant digit of the voltage parameter on display 3 To change cursor position press the rotary knob This only works while the unit is in Voltage Set mode and cursor is shown on the display 4 Once you set to the voltage you want press V SET button again to exit Voltage Set mode or leave the unit idle for 10 seconds and it will automatically exit out of Voltage Set mode Setting Output Frequency To set the frequency for the output follow the steps below 1 Press FREQ SET button on the front panel to go into Frequency Set mode The display should look like the figure below V A RANGE 10 0 0 05 HI 50 00 1 LOC Hz W REM LOC 2 Use the rotary knob to adjust the digit selected by the cursor which by default will appear under the least significant digit of the voltage parameter on display 3 To change cursor position press the rotary knob This only works while the unit is in Frequency Set mode and cursor is shown on the display 4 Once you set to the voltage you want press FREQ SET button again to exit Frequency Set mode or leave the unit idle for 10 seconds and it will automatically exit out of Frequency Set mode 3 4 2 Local Mode setting The operation mode of the unit
19. ating procedure practice or condition which if not followed correctly could result in injury or death to personnel A CAUTION statement calls attention to an operating procedure practice or condition which if not followed correctly could result in damage to or destruction of part or all of the product WARNING Do not alter the ground connection Without the protective ground connection all accessible conductive parts including control knobs can render an electric shock The power jack and mating plug of the power cable meet IEC safety standards WARNING To avoid electrical shock hazard disconnect power cord before removing covers Refer servicing to qualified personnel CAUTION Before connecting the line cord to the AC mains check the rear panel AC line voltage indicator Applying a line voltage other than the indicated voltage can destroy the AC line fuses For continued fire protection replace fuses only with those of the specified voltage and current ratings CAUTION This product uses components which can be damaged by electro static discharge ESD To avoid damage be sure to follow proper procedures for handling storing and transporting parts and subassemblies which contain ESD sensitive components WARNING HAZARDOUS VOLTAGES IN EXCESS OF 230 Vrms 400 V peak MAY BE PRESENT WHEN COVERS ARE REMOVED QUALIFIED PERSONNEL MUST USE EXTREME CAUTION WHEN SERVICING THIS EQUIPMENT CIRCUIT BOARDS TEST POINTS AND OUTPUT
20. e RQS summary bit A 1 in any Service Request Enable Register bit position enables the corresponding Status Byte Register bit and all such enabled bits that are logically OR to cause Bit 6 of the Status Byte Register to be set When the controller conducts a serial poll in response to SRQ the RQS bit is cleared but the MSS bit is not When SRE is cleared by programming it with 0 it cannot generate an SRO to the controller Command Syntax SRE lt NRf gt Parameters 0 to 255 Example SRE lt sp gt 128 Query Syntax SRE Returned Parameters lt NR1 gt register binary value Related Commands ESE ESR PSC STB This query reads the Status Byte register which contains the status summary bits and the Output Queue bit Reading the Status Byte register does not clear it The input summary bits are cleared when the appropriate event registers are read A serial poll also returns the value of the Status Byte register except that bit 6 returns Request for Service RQS instead of Master Status Summary MSS A serial poll clears RQS but not MSS Bit Configuration of Status Byte Register Bit 7 6 5 4 3 2 1 0 Position Name OPER MSS ESB MAV QUES ERR Not Not Used Used Total 128 64 32 16 8 4 2 1 Bits OPER Operation Status Message Available MSS Master Status QUES Questionable Status Summary bit ESB Event Status Byte Summary ERR Error Queue Bit Query Sy
21. e queue can hold the last error in the queue is replaced by 350 Too Many Errors The error queue buffer size is 9 Query Syntax SYSTem ERRor Parameters None Returned Parameters See below Examples SYST ERR Below are the error codes with messages ERROR NO ERROR MESSAGE 0 NO ERROR 100 COMMAND ERR 101 INVALID CHAR 102 SYNTAX ERR 104 DATA TYPE ERR 109 MISSINGPARAMETER 151 INVALID STRING 200 EXECUTION ERR 222 DATA OUT OF RANGE 223 TOO MUCH DATA 350 QUEUE OVERFLOW 21 420 QUERY UNTERMINATED 224 ILLEGAL PARAMETER SYST LOC This command sets the interface to Local state which enables the front panel controls of the instrument Command Syntax SYST LOC Parameters None Examples SYST LOC Returned Parameters None SYST REM This command sets the interface to Remote state which disables the front panel controls of the instrument Command Syntax SYST REM Parameters None Examples SYST REM Returned Parameters None SYST VERS This query returns the SCPI version number to which the AC source complies The value is of the form YYYY V where YYYY is the year and V is the revision number for that year Query Syntax SYST VERS Parameters None Examples SYST VERS Returned Parameters lt NR2 gt SYST CONFIG This command configures the mode of instrument like or LO This command is same as SOUR VOLT RANG but has been added to give the flexibility to user and at the same time to be
22. ent repackaging for return to the factory were required Repackaging is straightforward and is essentially the reverse of the unpacking Should only a sub assembly need to be repackaged for re shipment use the original containers Remove the Source module from its shipping container and inspect for any damage to the front panel switches and display module Check the rear of the instrument for damage to Sockets Fuse Holders and Terminals etc Also check for any optional parts which have been ordered by you If any of the part is damaged or broken then DO NOT switch ON the instrument Next you MUST become familiar with the unit configuration 2 3 INPUT POWER REQUIREMENTS The Model 1657 is configured at the factory to operate from 90 to 264 VAC 1 phase 47 63 Hz power line AC line input connector is type IEC320 C19 CAUTION THE AC SOURCE WILL BE DAMAGED IF IT IS OPERATED AT AN INPUT VOLTAGE THAT IS OUTSIDE ITS CONFIGURED INPUT RANGE FUSE The AC power source uses a Type F 20 A fuse that is located in the fuse holder at the rear panel of the unit Please check the fuse before powering on the instrument 2 4 INSTALLATION 1 AC Input Power Connection Connect the provided power cord into the input socket on the rear panel Before connecting to an electrical outlet ensure the following a The available line supply is compatible to your unit meaning the voltage and frequency must meet within the input specification operat
23. ing range b The available line supply is capable of supplying the maximum peak current and power of the power supply WARNING TO PROTECT THE OPERATORS THE WIRE CONNECTED TO THE GROUND TERMINAL MUST BE CONNECTED TO THE EARTH GROUND UNDER NO CIRCUMSTANCES SHOULD THIS AC SOURCE BE OPERATED WITHOUT AN ADEQUATE GROUND CONNECTION 2 Load Connections A universal socket is provided on the rear panel for the output load connections Selection of Input Power and Load connection cabling should follow good practice specific to the application An output cable should be able to handle the full load current and maximum voltage and power under worst case conditions of temperature humidity mechanical abuse and effects of long term aging 3 Turn On WARNING BEFORE TURNING ON THE INSTRUMENT ALL PROTECTIVE EARTH TERMINALS EXTENSION CORDS AND DEVICES CONNECTED TO THE INSTRUMENT MUST BE CONNECTED TO A PROTECTIVE EARTH GROUND ANY INTERRUPTION OF THE PROTECTIVE EARTH GROUNDING WILL CAUSE A POTENTIAL SHOCK HAZARD a Monitor the output voltage with a true RMS multimeter Keep the output ON OFF switch to OFF position b Turn the input power on through the input rocker switch This will light the front panel display The display will show the model No software version No last set values of parameters and the actual output parameters c There is a small delay between the time the last set values are displayed until they are available on
24. izing the serial port SERVICE INFORMATION Warranty Service Please go the support and service section on our website www bkprecision com to obtain a RMA Return the product in the original packaging with proof of purchase to the address below Clearly state on the RMA the performance problem and return any leads probes connectors and accessories that you are using with the device Non Warranty Service Please go the support and service section on our website www bkprecision com to obtain a RMA Return the product in the original packaging to the address below Clearly state on the RMA the performance problem and return any leads probes connectors and accessories that you are using with the device Customers not on an open account must include payment in the form of a money order or credit card For the most current repair charges please refer to the service and support section on our website Return all merchandise to B amp K Precision Corp with pre paid shipping The flat rate repair charge for Non Warranty Service does not include return shipping Return shipping to locations in North America is included for Warranty Service For overnight shipments and non North American shipping fees please contact B amp K Precision Corp B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 Include with the returned instrument your complete return shipping address contact name phone numbe
25. ng control knobs can render an electric shock The power jack and mating plug of the power cable meet IEC safety standards DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard KEEP AWAY FROM LIVE CIRCUITS Instrument covers must not be removed by operating personnel Component replacement and internal adjustments must be made by qualified maintenance personnel Disconnect the power cord before removing the instrument covers and replacing components Under certain conditions even with the power cable removed dangerous voltages may exist To avoid injuries always disconnect power and discharge circuits before touching them DO NOT SERVICE OR ADJUST ALONE Do not attempt any internal service or adjustment unless another person capable of rendering first aid and resuscitation is present DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT Do not install substitute parts or perform any unauthorized modifications to this instrument Return the instrument to B amp K Precision for service and repair to ensure that safety features are maintained WARNINGS AND CAUTIONS WARNING and CAUTION statements such as the following examples denote a hazard and appear throughout this manual Follow all instructions contained in these statements A WARNING statement calls attention to an oper
26. ntax STB Parameters None Returned Parameters lt NR1 gt register value Related Commands SRE ESR ESE TST This query causes the ac source to do a self test and report any errors Query Syntax TST Parameters None 26 Returned Parameters lt NR1 gt 0 indicates the ac source has passed selftest Non zero indicates an error code TRP RST This command resets the instrument to exit out of any trip related condition Command Syntax TRP RST Parameters None Examples TRP RST READ This command returns the run time status of parameters of the instrument It returns voltage lt value gt V current lt value gt A range mode HI LOW frequency lt Value gt Hz power lt value gt W instrument mode REM LOC output status ON OFF Command Syntax READ Parameters None Example Read Returned Parameters 280 0V lt SP gt 14 00A lt SP gt HI lt SP gt 115 00Hz lt SP gt 7W lt SP gt LOC lt SP gt 0OFF 27 CHAPTER 5 Maintenance 5 1 MAINTENANCE 5 2 TROUBLESHOOT GUIDE 5 1 MAINTENANCE Please always keep in mind the following preventive steps to ensure the proper operation of your instrument Allow enough ventilation around the unit Avoid keeping tools equipment or other objects on the top cover Do not exceed the input output limits in any condition 5 2 TROUBLESHOOT GUIDE Below is a list of common problems that may occur along with their solutions Problem Reason Solution
27. r and description of problem LIMITED ONE YEAR WARRANTY B amp K Precision Corp warrants to the original purchaser that its products and the component parts thereof will be free from defects in workmanship and materials for a period of one year from date of purchase B amp K Precision Corp will without charge repair or replace at its option defective product or component parts Returned product must be accompanied by proof of the purchase date in the form of a sales receipt To obtain warranty coverage in the U S A this product must be registered by completing a warranty registration form on our website www bkprecision com within fifteen 15 days of purchase Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs The warranty is void if the serial number is altered defaced or removed B amp K Precision Corp shall not be liable for any consequential damages including without limitation damages resulting from loss of use Some states do not allow limitations of incidental or consequential damages So the above limitation or exclusion may not apply to you This warranty gives you specific rights and you may have other rights which vary from state to state B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 31 32 BK PRECISION 22820 Savi Ranch Parkway Yorba Linda CA 92887 www
28. rnal force cooling Note Provide sufficient space around air inlets and outlets for proper cooling Weight Approx Approx 24 kg 53 Ibs Dimensions 88 0 mm H x 482 6 mm W x 500 0 mm D 3 46 H x 19 W x 19 7 D Safety amp EMC EN 60950 amp EN55022 Class A Environmental Conditions Operating 0 45 C Temperature Storage 20 to 60 Temperature Humidity lt 90 non condensing CHAPTER 2 Installation INTRODUCTION UNPACKING INPUT POWER REQUIREMENTS INSTALLATION TEST EQUIPMENT REQUIREMENTS PACKAGE CONTENTS NNNNN O UA UN pp 2 1 INTRODUCTION 1657 is configured calibrated and tested prior to shipment This instrument is therefore ready for immediate use upon receipt The initial physical inspections should be made to ensure that no damage has been sustained during shipment 2 2 UNPACKING Inspect the shipping container before accepting it from the carrier If damage to the container is evident remove the instrument from the container and visually inspect it for damage to the instrument case and parts If damage to the instrument is evident a description of the damage should be noted on the carrier s receipt and signed by the driver or carrier agent Save all shipping containers and material for inspection Forward a report of any damage to the factory or the agent through which the unit is procured Retain the original packing container if subsequ
29. s Enable Register Bit 7 6 5 4 3 2 2 0 Position Name PON UREQ CME EXE DDE QYE Not OPC Used Total 128 64 32 16 8 4 2 1 bits PON Power DDE Device Dependent Error UREQ User Request QYE Query Error CME Command Error OPC Operation Complete EXE Execution Error 24 Command Syntax ESE lt NRf gt Parameters 0 to 255 Examples ESE 129 Query Syntax 5 Returned Parameters lt NR1 gt ESR This query reads the Standard Event Status Event register Reading the register clears it The bit configuration of this register is the same as the Standard Event Status Enable register see ESE Query Syntax 5 Parameters None Returned Parameters lt NR1 gt register value Related Commands CLS ESE ESE OPC IDN This query requests the ac source to identify itself It returns the data in three fields separated by commas Query Syntax ESE Parameters None Returned Parameters lt SRD gt Field Information B amp K Precision manufacturer ACSxxxx model number Vx xxRxx f irmware revision Example B amp K Precision ACS1657 V2 01 R06 This command causes the interface to set the OPC bit bit 0 of the Standard Event Status register when it has completed all pending operations Pending operations are complete when all commands sent before have been executed This includes overlapped commands Most commands are
30. t sp gt 230 VOLT AMP lt sp gt 120 VOLT lt sp gt 23 22 VOLT lt sp gt 230 12 VOLT lt sp gt 230 1 Query Syntax SOUR VOLT LEV IMM AMP Returned Parameters lt NR2 gt V Related Commands None SOUR FREQ CW IMM lt NRF gt This command sets the frequency in Hz as per the instrument model and the range limits Note Any value programmed above or below the valid range of the instrument would not be accepted and would be reported as error Command Syntax SOUR FREQ CW IMM lt NRF gt Parameters 45 to 450 MAX MIN Unit Hz Hertz Examples FREQ lt sp gt 120 FREQ CW lt sp gt 100 SOUR FREQ CW IMM lt sp gt 50 FREQ lt sp gt 50 22 Query Syntax SOUR FREQ CW IMM Returned Parameters lt NR2 gt Hz SOUR VOLT RANG lt NRf gt This command sets the voltage range of the ac source Two voltage ranges are available a 135 volt range and a 270 volt range Sending a parameter greater than 135 selects the 270 volt range otherwise the 135 volt range is selected When the range is set to 135 the maximum rms voltage that can be programmed for a sine wave is 135 volts Any value greater than the 270 volt range would indicate an DATA OUT OF RANGE error accordingly Command Syntax SOUR VOLT RANG lt NRf gt Parameters 135 270 MAX MIN RST Value 270 Examples VOLT RANG lt sp gt 270 VOLT RANG lt sp gt MIN Query Syntax SOUR VOLT RANG Returned Parameters lt NR2 gt V Related Commands VO
31. the output Approx 3 to 5 Seconds After the output voltage has stabilized set the voltage amp the frequency to the desired value amp turn the output ON d Load the output with a resistive load If the output current exceeds the maximum specified current limit the alarm LED will turn on and output will turn off Overload trip after some delay This can be reset by pressing the RESET button on the front panel 9 NOTE Allow sufficient OFF time once the output is TRIP ed by abnormal condition Over temperature and or Over load before operating again e Select the 135V range by using the front panel range button Repeat the above procedure and check that all output parameters are correct If all the above parameters are correct the unit is ready for operation 2 5 TEST EQUIPMENT REQUIREMENTS The following instruments will be required to test the complete installation of the unit 1 A 4 5 digit or better true RMS digital multimeter for verifying the input and the output voltage and frequency of the unit 2 Current meter for measurement up to at least 15 A or a standard current transformer with the suitable burden with a four and half digit or better digital multi meter with true RMS measurement 3 Power meter with suitable rating for input amp output parameter testing 4 Aload to test and verify the operation on full load 2 6 PACKAGE CONTENTS The AC source is shipped with the following contents 1657 AC
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