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Summary of Contents for BK Precision 19*00
- Page 1 Model 1900, 1901, 1902 Switching 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 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 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 Controls and Indicators ................6 Front Panel ..................6 Rear Panel ..................7 Operating Instructions ................8 Using the Power Supply ..............9 4.1.1 Connection ................9 4.1.2 Self Test Sequence ..............9 4.1.3 Control Knobs ................ -
Page 6: Introduction
Introduction B&K Precision models 1900, 1901, and 1902 are laboratory grade switching mode DC power supplies with high current output in a small form factor and lightweight package. The 1900 Series provide different configurations of high output voltage or high output current and make setting voltage and current levels fast and precise through its dual action, course/fine rotary encoder control. -
Page 7: Controls And Indicators
Controls and Indicators Front Panel Figure 1 - Front Panel LED panel meter display with CV/CC indicator Rear Control Indicator (lights up when using Preset/Remote Control/Set mode) Output Voltage Control Knob (control main and auxiliary output voltage) Output Current Control Knob (control main and auxiliary output current limit) Power ON/OFF Switch Auxiliary Output Terminal (max 5 A) Section 4.1.4... -
Page 8: Rear Panel
Rear Panel Figure 2 - Rear Panel Main Output Terminal (max 60 A for 1900 / 30 A for 1901 / 15 A for 1902) Section 4.1.4 Note: Please see for more details on using both main and auxiliary output terminals together. Remote Sensing Terminal (model 1900 only) Mode Selection Switch (Normal, Preset, Remote Control, Set Modes) (10) -
Page 9: Operating Instructions
Operating Instructions Safety Precautions ● Never short the remote sensing terminal. ● This power supply is for indoor use only. ● Do not expose the power supply to sun, high humidity, or dusty environments. ● Never remove the metal cover of the power supply while AC power is connected. -
Page 10: Using The Power Supply
Using the Power Supply 4.1.1 Connection To connect the equipment to the power supply, follow the steps below. 1. Check the rating label of the power supply and confirm that it complies with your AC mains voltage. 2. Connect the power supply to the AC mains using the provided power cord and make sure the Mode Selection Switch is in the Normal position. - Page 11 Front Panel Display Test Segment check C.V. indicator check C.C. indicator check Rear control indicator check Return to C.V. Start power supply checks Overvoltage protection check Overload protection check...
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Page 12: Control Knobs
Front Panel Display Test Overtemperature protection check Fan check Output off (remote control mode) Table 2 - Self Test Sequence The LED and other indicators on the front panel will be turned on. When the cooling fan is being checked, a loud fan noise can be heard. After the self checks, the CV, V, and A LED indicators are lit up displaying voltage and 0.0 current. -
Page 13: Using Both Main And Auxiliary Outputs
4.1.4 Using Both Main and Auxiliary Outputs The power supply has a main output in the rear and an auxiliary output in the front that can be used separately or together. The main and auxiliary output both share the same voltage and current control knobs and will output the same voltage and current up to the maximum output ratings of the power supply and terminals. -
Page 14: Normal Mode
Note: The power supply is factory preset to Normal Mode with maximum current level. 4.2.1 Normal Mode This is the factory preset mode and the power supply output voltage and current are controlled by the dual action dial knobs. Push the knobs to toggle the coarse and fine tuning. You will notice the subtle change in brightness of LED. -
Page 15: Set Mode
4.2.3 Set Mode First, enter Set Mode by pushing Mode Selection Switch to “Set” position. To define the preset output P1/P2/P3 1. Select the Recall Switch to the position you want to set: P1, P2, or P3. 2. Adjust the front panel voltage control knob to set your desired voltage value. -
Page 16: Remote Control Mode
4.2.4 Analog Remote Control Mode Select this mode to control the output voltage and current by Remote Control Section 4.4 Connector. Please refer to for more details. Remote Sensing (Model 1900 Only) WARNING: Never short the remote sensing terminal. Never connect the remote sensing terminal in reverse polarity. Always disconnect the remote sensing terminal first after use. -
Page 17: Disconnection
4.3.2 Disconnection WARNING: Wrong disconnect sequence will damage the power supply. 1. Disconnect the remote sensing connections. 2. Disconnect the power connections between the power supply and equipment. Analog Remote Control There are two methods to remote control voltage and current. Note: Both methods require the remote control connector plug to be set up in order for analog remote control mode to be functional;... - Page 18 Figure 5 - Pin Numbers Make sure the load is disconnected and the power supply is OFF. Plug the remote connector plug into the analog remote control terminal of the power supply. Secure the remote connector plug to the terminal socket by locking the Figure 6 connector ring ( Figure 6 - Connector Ring...
- Page 19 Method A: Using Two External Variable DC Voltage Sources FUNCTIONS REMARKS Internal DC +5 V Less than 50 mA Voltage Adjust 0 – 5 V Current Adjust 0 – 5 V Ground Output OFF Short to Ground Table 4 – Remote Connector Plug Pin Assignment for External Variable Voltage Sources A variable external DC voltage source of 0 –...
- Page 20 5. Switch on the power supply. 6. Check the output voltage range of the power supply by varying the external voltage source for voltage adjustment from 0 to 5 V. 7. Short circuit the main output with an 8AWG gauge wire and check the display for CC setting by varying the external voltage source for current adjustment from 0 to 5 V.
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Page 21: Enable And Disable The Output
FUNCTIONS REMARKS Internal DC +5 V Resistor end Voltage Adjust Variable part of resistor Current Adjust Variable part of resistor Ground Resistor end Output OFF Short to Ground Table 5 – Remote Connector Plug Pin Assignment for Variable Resistors 3. Turn the remote control ON/OFF switch to ON position. 4. -
Page 22: Faults And Troubleshooting
Shorting Pin 5 to Pin 4 (ground) will turn the output off. When output is off, the CV and CC LED will flash. The current output voltage and current setting will show on the panel meter. You can also adjust the output by voltage and current control knob to your desired value when output is off. -
Page 23: Otp: Overtemperature Protection
OTP: Overtemperature Protection There is a thermo sensor inside the unit to monitor and prevent the unit from getting too hot. When OTP is triggered, there is no output and the following warning will appear on the LED display. Figure 9 - Overtemperature Protection When you get this warning, switch off the unit and remove all loading. -
Page 24: Fuse Replacement
Figure 10 - Overload Protection To reset this warning, switch off the unit and remove all connected devices. Switch the unit back on again and double check with caution. If the problem persists, please contact B&K Precision. Fuse Replacement If the fuse blows, the CV or CC indicators will not light and the power supply will not operate. -
Page 25: Specifications
Specifications Models 1900 1901 1902 Output Variable Output Voltage 1 – 16 V 1 – 32 V 1 – 60 V Variable Output Current 0 – 60 A 0 – 30 A 0 – 15 A Auxiliary Output Current Voltage Regulation Load (0-100% Load) ≤... - Page 26 Models 1900 1901 1902 Switching Frequency 65 – 85 kHz 75 – 95 kHz 65 – 85 kHz O/P 1-5 V: set O/P 1-5 V: set O/P 1-5 V: set voltage +2 V voltage +2 V Tracking Overvoltage voltage +2 V O/P 5-20 V: set O/P 5-20 V: set Protections...
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Page 27: Certification
Certification CE Compliant CE Declaration of Conformity The power supply meets the requirements of 2006/95/EC Low Voltage Directive and 2004/108/EC Electromagnetic Compatibility Directive. Low Voltage Directive EN 60950 EN 61010 Safety requirements for electrical equipment for measurement, control, and laboratory use. EMC Directive EN 55011 EN 55022... -
Page 28: Service Information
Service Information Warranty Service: Please go to the support and service section on our website at www.bkprecision.com to obtain an 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. -
Page 29: Limited Two-Year Warranty
Limited Two-Year Warranty B&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 two years from date of purchase. B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts.
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