Related Manuals for BK Precision 1737
Summary of Contents for BK Precision 1737
- Page 1 Model 1737 Dual Range DC Power Supply INSTRUCTION MANUAL 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com...
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Page 2: Safety Summary
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. - Page 3 WARNING and CAUTION statements, such as the following examples, denote a WARNINGS AND CAUTIONS hazard and appear throughout this manual. Follow all instructions contained in these statements. A WARNING statement calls attention to an operating procedure, practice, or condition, which, if not followed correctly, could result in injury or death to personnel.
- Page 4 Compliance Statements Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) This product is subject to Directive 2002/96/EC of the European Parliament and the Council of the European Union on waste electrical and electronic equipment (WEEE), and in jurisdictions adopting that Directive, is marked as being put on the market after August 13, 2005, and should not be disposed of as...
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Page 5: Table Of Contents
Contents Safety Summary ............1 Introduction ..............5 Quick Reference ............6 Front Panel ..................6 Rear Panel ..................7 Operating Instructions ..........8 Instrument Hook-Up ................9 Typical Constant Voltage Operation ..........11 Setting Current Limit ................ 12 Typical Constant Current Operation ..........13 Constant Voltage/Constant Current Characteristic ...... -
Page 6: Introduction
The 1737 provides 0-60 V DC output, adjustable with both coarse and fine voltage controls for precise setting. The current output for the 1737 is 0-3 A for the 0-30 V range, and 0-2 A for the 30-60 V range, adjustable with both coarse and fine current controls. -
Page 7: Quick Reference
Quick Reference 3.1 Front Panel Figure 1 - Front Panel INDICATORS Either the CV or CC LED indicators will be lit whenever the unit is operating. The unit automatically changes from CV to CC operation when the preset current limit is reached. -
Page 8: Rear Panel
CURRENT CONTROL 7) Current Coarse Control. Coarse adjustment of current limit. Read value on the red LED display. 8) Current Fine Control. Fine adjustment of current limit. Read value on the red LED display. POWER CONTROLS 9) Power ON-OFF Switch. OUTPUT TERMINALS 10) “-”... -
Page 9: Operating Instructions
Operating Instructions Safety Precautions Use only a polarized 3-wire AC outlet. This assures that the power supply chassis, case, and ground terminal are connected to a good earth ground and reduces danger from electrical shock. There is little danger of electrical shock from the power supply output, which produces a maximum of 60 volts dc. -
Page 10: Instrument Hook-Up
4.1 Instrument Hook-Up 1. Turn off the power supply and the equipment to be powered during hook- 2. Connect the positive polarity of the device being powered to the red (+) terminal of the power supply. 3. Connect the negative polarity of the device being powered to the black (-) terminal of the power supply. - Page 11 Figure 3 (A and B) - Grounding Possibilities Figure 3 (C and D) - Grounding Possibilities...
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Page 12: Typical Constant Voltage Operation
4.2 Typical Constant Voltage Operation 1. Before connecting the device to be powered to the power supply, determine the maximum safe load current for the device to be powered and set the current limit value (see Setting Current Limit procedure in this section). 2. -
Page 13: Setting Current Limit
4.3 Setting Current Limit 1. Determine the maximum safe current for the device to be powered. 2. Temporarily short the (+) and (-) terminals of the power supply together with a test lead. 3. Adjust the coarse and fine current control for the desired current limit. Read the current value on the current LED display. -
Page 14: Typical Constant Current Operation
4.4 Typical Constant Current Operation Before connecting the device to be powered to the power supply, determine the maximum safe voltage to be applied, and set the voltage controls to obtain that voltage reading on the voltage LED display. Determine the desired constant current value. Set the coarse and fine current control to minimum (1 mA). -
Page 15: Constant Voltage/Constant Current Characteristic
4.5 Constant Voltage/Constant Current Characteristic The working characteristic of this power supply is called a constant voltage/constant current automatic crossover type. This permits continuous transition from constant current to constant voltage modes in response to the load change. The intersection Figure of constant voltage and constant current modes is called the crossover point. -
Page 16: Saving The Power Supply's Current State
4.6 Saving the Power Supply’s Current State The current state of the power supply is saved after 2 seconds from the last adjustment or after the “SAVE” command is received through the RS232 interface. 4.7 Connecting Two Power Supplies in Series Two power supplies may be connected in series to provide a variable 0-120 V output. -
Page 17: Connecting Two Power Supplies In Parallel
4.8 Connecting Two Power Supplies in Parallel Two power supplies may be connected in parallel to double the maximum load current. In this configuration, the two power supplies will provide 0-60 V output at up to 4 A or 0-30 V at 6 A (heavier gauge hook-up leads are advisable). Current Figure 9 . -
Page 18: Remote Operation
The power supply can be connected to the RS232 interface using the 9-pin (DB-9) serial connector on the rear panel. The 1737 uses a null modem RS232 cable. The cable pin diagram for the DB-9 connector is shown in the picture below:... -
Page 19: Rs232 Configuration Overview
5.1 RS232 Configuration Overview Baud Rate 9600 bps Parity Bits none Data Bits Start Bits Stop Bits Flow Control Xon / Xoff Termination Character Table 1 - RS232 Configuration 5.2 RS232 Commands 1.VOLT xx.xx<CR> This command sets the output voltage value. The output voltage takes the programmed value only if the power supply is in Constant Voltage mode. -
Page 20: Application Software
CC<CR> if the power supply is in Constant Current mode Application Software Remotely control your 1737 using B&K Precision’s application software, available for download at www.bkprecision.com. This software provides a virtual front panel and a simple data logging function to store and log data to a text or CSV file. RS232... -
Page 21: Maintenance
Maintenance WARNING The following instructions are for use by qualified personnel only. To avoid electrical shock, do not perform any servicing other than contained in the operating instructions unless you are qualified to do so. 6.1 Fuse Replacement If the fuse blows, the CV or CC indicators will not light and the power supply will not operate. -
Page 22: Calibration
6.3 Calibration Calibration is a procedure that ensures that the power supply will work properly, with parameters specified within the Specifications section. Before initiating the calibration procedure, the following conditions must be assured: • Disconnect any loads connected to the power supply and turn it on •... - Page 23 1. Turn on the power supply in calibrating mode a) Turn off the power supply. Disconnect the power cord and all loads connected to the power supply. b) Remove power supply’s cover. Figure 11 Set the calibration jumper as shown in d) Reassemble the power supply.
- Page 24 2. Zero voltage calibration a) Turn the current coarse knob to select “U 0” for zero voltage calibration and turn the voltage coarse knob. The power supply will display: Voltage display: Current display: hex number On the current display, a hexadecimal number between 0 and FFFFh is displayed.
- Page 25 A hexadecimal number between 0 and FFFFh will be shown on the current display. During the zero voltage calibration, the CV LED is lit. b) Connect a digital voltmeter to the output terminals of the power supply (B&K Precision 5491B or similar instrument). Use the current coarse and fine knobs to adjust the value displayed by the power supply until the voltmeter indicates the value to 60.882 V.
- Page 26 A hexadecimal number between 0 and FFFFh is shown on the current display. Use the current coarse and fine knobs to adjust the value displayed by the power supply until the ammeter indicates the closest value to 0 A. d) Turn the voltage coarse knob to finish the calibration. While performing the zero current calibration, the current display will show Adc.
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Page 27: Instrument Repair Service
A hexadecimal number between 0 and FFFFh is shown on the current display. Use the current coarse and fine knobs to adjust the value displayed by the power supply until the ammeter indicates the value to 3.0801 A. d) Turn the voltage coarse knob to finish the calibration. While performing the full current calibration, the current display will show Adc. -
Page 28: Error Messages
Error Messages The following types of errors may occur: • Self-test errors • Calibration errors • Command errors The first two types of errors are displayed on the voltage display as: Er xx, where xx is a number. The command errors are sent through the RS232 interface. 7.1 Self-Test Errors Er 01: EEPROM does not respond Er 02: CV not high... -
Page 29: Command Errors
Full voltage calibration errors: Er 30: CC not high Er 31: CV not low Er 32: DAC out of range Er 33: ADC out of range Er 34: ADC system calibration failed Er 35: DAC full voltage constant checksum failed Er 36: ADC full voltage constant checksum failed Zero current calibration errors: Er 40: CC not low... -
Page 30: Specifications
Specifications 1737 Output Ratings ( 0 °C~40 °C) 0-60 V Voltage 0-3 A (0-30 V), Current 0-2 A (30-60 V) Load Regulation ±(% of output+offset) 0.01% + 3 mV Voltage 0.2% + 3 mA Current Line Regulation ±(% of output+offset) 0.01% + 3 mV... - Page 31 Storage Humidity 85% R.H. Mechanical Specifications 10.5 lbs (4.8 kg) Weight 5.5” x 6.2” x 12.5" Dimensions (W x H x D) (140 x 158 x 318 mm) Power cord, instruction manual, Supplied Accessories RS-232 cable, shorting bar NOTE: All specifications apply to the unit after a temperature stabilization time of 30 minutes.
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Questions and answers
When testing lights I tested on with no issue the I plug in to the same light on a different independent fixture and the charger maxed voltage and current maxed out and threw 2 error codes 3 and 5 how do clear these errors and why would it do this.