User manual

ManualsBrandsB&K Precision Manualselectrical equipment & supplies1657

Model: 1657

AC Power Source

USER MANUAL

Summary of content (34 pages)

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Model: 1657 AC Power Source USER MANUAL
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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.
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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).
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TABLE OF CONTENTS Safety Summary ..................................................................................................................................................... 1 CHAPTER 1 ................................................................................................................................................ 4 1.1 INTRODUCTION ................................................................................................................................ 5 1.2 FEATURES ....
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CHAPTER 1 General Information 1.1 INTRODUCTION 1.2 FEATURES 1.
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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. A RS232 interface port is provided in the rear panel for remote programmability. 1.
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Low Range High Range Accuracy Resolution Distortion 0 - 135 Vrms 0 - 270 Vrms +/- 1% of F.S. 0.1 V < 2% @ 220 VAC, 50 Hz Full Load Worse case: < 5% @ 270VAC, 450 Hz, Full Load +/- 0.1% of F.S. +/- 1% of F.S. 0.05% per °C from 25 °C Line Regulation Load Regulation Temp Coefficient Output Current Low Range (135 V) 12 Arms (Limited to 1500 VA) High Range (270 V) 6 Arms (Limited to 1500 VA) Accuracy +/- 1% of F.S. Resolution 0.01 A Crest Factor 3 Power Factor 0.8 Lag to 0.
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CHAPTER 2 Installation 2.1 2.2 2.3 2.4 2.5 2.
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2.1 INTRODUCTION The 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.
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2.4 1. INSTALLATION 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 operating range. b) The available line supply is capable of supplying the maximum peak current and power of the power supply.
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NOTE: Allow sufficient OFF time once the output is TRIP’ed by abnormal condition (Over temperature and/or Over load) before operating again. e) 2.5 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. TEST EQUIPMENT REQUIREMENTS The following instruments will be required to test the complete installation of the unit. 1) A 4.
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CHAPTER 3 Operating Instructions 3.1 3.2 3.3 3.
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3.1 FRONT PANEL DESCRIPTION 5 2 3 6 4 7 1 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 11 10 9 8 Power ON/OFF switch VFD display Adjustment knob V-SET button FREQ-SET button LOCAL button RANGE button Output ON/OFF button RESET button Alarm LED indicator Output On/Off LED indicator 3.2 REAR PANEL DESCRIPTION 1 3 2 1. 2. 3. 4. 5. RS232 DB-9 serial port Universal socket AC output (1500 VA Max.
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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 POTENTIAL SHOCK HAZARD. 3.3.
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V 10.0 A 60.0 Hz RANGE HI LOC W REM/LOC After 1 second V 0.0 A 0.00 60.0 0.00 Hz W RANGE LOW LOC 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.
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V 10.0 A RANGE 0.05 HI 50.0 Hz 1 W LOC 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.
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3.4.2 Local Mode setting. The operation mode of the unit 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.
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CHAPTER 4 Remote Interface 4.1 RS232C INTERFACE 4.2 CONNECTION DETAILS 4.
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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 BIT PARITY NO PARITY HANDSHAKING NO HANDSHAKING The Data format is shown as: ONE START BIT 4.2 NO PARITY BIT 8 DATA BITS 1 STOP BIT CONNECTION DETAILS The RS232 interface is a 9 pin D-type male connector (DB-9) on the rear panel.
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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 0x0A).
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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] Parameters: 0 to 270 | MAX | MIN Unit: V (Volts) Examples: VOLT230; VOLT:LEV230; VOLT:AMP120 VOLT23.22; VOLT230.12; VOLT230.1; Query Syntax: [SOUR:]VOLT[:LEV][:IMM][:AMP]? Returned Parameters: V Related Commands: None.
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MEAS:[SCAL:]POW:AC[:REAL]? This query returns the power in watts. Query Syntax: MEAS:[SCAL:]POW:AC[:REAL]? Parameters: None Unit: W (Watt) Examples: MEAS:SCAL:POW:AC?; MEAS:POW:AC? Returned Parameters: 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: A MEAS:[SCAL:]FREQ? This query returns the output current in amperes.
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-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.
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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.
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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: (register value) Related Commands: STAT:OPER:COND? STAT:QUES:ENAB This command sets or reads the value of the Questionable Enable register.
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Command Syntax: *ESE Parameters: 0 to 255 Examples: *ESE 129 Query Syntax: *ESE? Returned Parameters: *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: *ESE? Parameters: None Returned Parameters: (register value) Related Commands: *CLS *ESE *ESE? *OPC *IDN? This query requests the ac source to identify itself.
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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 Service (RQS) summary bit.
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Returned Parameters: 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 (V), current(A) ,range mode (HI /LOW),frequency (Hz), power(W), instrument mode (REM/LOC), output status (ON/OFF).
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CHAPTER 5 Maintenance 5.1 MAINTENANCE 5.
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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 Poor measurement of V, I and W.
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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 2. Over voltage may damage internal circuitry. Contact B&K Precision for service information. 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 initializing the serial port.
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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 #.
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