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SAFETY TERMS AND SYMBOLS
These terms may appear in this manual or on the product:
WARNING. Warning statements identify condition or practices that could result in injury or loss of life.
CAUTION. Caution statements identify conditions or practice that could result in damage to this
product or other property.
WARNING: This equipment is not for measurements performed for CAT II, III and IV.
Measurement category I is for measurements performed on circuits not directly connected to MAINS.
Measurement category II is for measurements performed on circuits directly connected to the low voltage installation.
Measurement category III is for measurements performed in the building installation.
Measurement category IV is for measurements performed at the source of the low-voltage installation.
The following symbols may appear in this manual or on the product:
www.valuetronics.com
DANGER
DANGER
High Voltage
Hot Surface
ATTENTION
Protective
refer to Manual
Conductor
Terminal
i
Earth(ground)
terminal
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Summary of Contents for Amrel SPS-1230
- Page 1 SAFETY TERMS AND SYMBOLS These terms may appear in this manual or on the product: WARNING. Warning statements identify condition or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practice that could result in damage to this product or other property.
- Page 2 FOR UNITED KINGDOM ONLY As the colours of the wires in main leads may not correspond with the colours marking NOTE identified in your plug/appliance, proceed as follows: This lead/appliance must only be wired by competent persons The wire which is coloured Green & Yellow must be connected to the Earth terminal marke WARNING with the letter E or by the earth symbol or coloured Green or Green &...
- Page 3 No.69 Lushan Road, Suzhou New District Jiangsu, China. declare, that the below mentioned products SPS-1230, SPS-1820, SPS-3610, SPS-2415, SPS-606 are herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States relating to Electromagnetic Compatibility (89/336/EEC, 92/31/EEC, 93/68/EEC) and Low Voltage Equipment Directive (73/23/EEC, 93/68/EEC).
- Page 4 CONTENTS INTRODUCTION..................................1 2. SPECIFICATION ..................................2 2-1. G ....................................2 ENERAL 2-3. C ............................3 ONSTANT URRENT PERATION 2-4. I ................................3 NDICATOR ETER 2-5. O ...............................3 OLTAGE ROTECTION 2-6. I ..................................3 NSULATION 3. PRECAUTIONS BEFORE OPERATION ..........................4 3.1 U ........................4 NPACKING THE WITCHING OWER UPPLY 3.2 C...
- Page 5 1. INTRODUCTION The series of switching power supplies for measuring instrument have ruled out the inconvenience of big volume and heavyweight of a traditional power supply possess. The output voltage and current is controlled by two variable resistors with coarse and fine regulation for more handy and precise adjustment.
- Page 6 FUSE STYLE & RATING WEIGHT Model Voltage Current Watts 115V 230V SPS-1230 SPS-1820 SPS-2415 T 10A 250V T 6.3A 250V SPS-3610 SPS-606 Dimensions：128(W) × 145(H) × 285(D) mm. WARNING: Voltage over 60V DC is a lethal shock hazard to the user. Be careful when connecting power supplies in series to achieve voltage higher than 60V DC totally or 60V DC between any connection and earth ground.
- Page 7 (1) Output current ranges from 0 to rating current with continuous adjustment. (2) Current regulation line regulation 3mA. load regulation 3mA. (3) Ripple & Noise SPS-606 SPS-3610 SPS-2415 SPS-1820 SPS-1230 3mArms 5mArms 10mArms 10mArms 30mArms 2-4. Indicator Meter 1)Voltage: Display : 3 1/2 Digits 0.39”...
- Page 8 3. PRECAUTIONS BEFORE OPERATION 3.1 Unpacking the Switching Power Supply The instrument has been fully inspected and tested before shipping from the factory. Upon receiving the instrument, please unpack and inspect it to check if there is any damages caused during transportation. If any sign of damage is found, notify the bearer and/or the dealer immediately.
- Page 9 3.3 Environment The normal ambient temperature range of this instrument is from 0° to 40°C (32° to 104°F). Operation of the instrument above this temperature range may cause damage to the circuits. Do not use the instrument in a place where strong magnetic or electric field exists as it may disturb the measurement.
- Page 10 4. THEORY OF OPERATION (See Figure 4-1) Block Configuration of SPS- System The SPS-Series comprise a Bridge rectifier, a Pulse Width Modulation, a Driver Circuit, a Driver Transformer, a Rectifier Circuit, a Voltage Control Circuit, a Current Shunt, an Output Filter, a Voltage/Current Adjusting Circuit, a Buffer Circuit, an Error Amplifier, an Opto-Isolator, and an Auxiliary Switching Supply and etc.
- Page 11 Description of Circuit Theory 1) +10V Voltage reference circuit： Start up the circuits of R306 and D302 to ensure the output voltage of OPA U301, PIN 1 is in positive status when power is on. At this moment, the output voltage of PIN 1 will pass through R307 to maintain the voltage of both ends of ZENER DIODE ZD301(6.2V) to 6.2V.
- Page 12 Figure 4-1: Block Diagram www.valuetronics.com...
- Page 13 5. PANEL CONTROLS AND INDICATORS 5-1. Front panel CV Indicator Lights when the power is on and in constant voltage operation. CC Indicator Lights when in constant current operation. Voltage coarse For the coarse adjustment of the output voltage. Voltage fine For the fine adjustment of the output voltage.
- Page 14 Fig. 5-1 Front Panel www.valuetronics.com...
- Page 15 Fig. 5-2 Rear Panel www.valuetronics.com...
- Page 16 6. OPERATION INSTRUCTIONS 6-1. Precaution (1) AC input AC input should be within the range of line voltage±15% 50/60Hz. WARNING: To avoid electrical shock, the power cord protective grounding conductor must be connected to ground. (2) Installation Avoid using the power supply in a place where ambient temperature exceeds 40℃. The heat sink located at rear of the power supply must have sufficient space for radiation.
- Page 17 (3) Output Current/Temperature Cure Line Chart: 100% Output Current Environment Temperature (℃) www.valuetronics.com...
- Page 18 (4) Output Test lead Selection: The Selection of Output Test Lead and Feedback Test Lead: For safety assurance, please select the adequate output test lead according to the following list: Conductor Maximum Permissible (CSA) Conductive Current Wire No. Component Cross Section Area Outer Model Resistor...
- Page 19 6-2. 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) Rotate the COARSE VOLTAGE control away from zero sufficiently to have the CC indicator lightened. (4) Adjust the CURRENT control for the desired current limit.
- Page 20 Similarly, crossover from the constant current to the constant voltage mode automatically occurs from a decrease in load, a good example of this would be seen when charging a 12 volt battery. Initially, the open circuit voltage of the power supply may be preset for 13.8 volts. A low battery will place a heavy load on the supply and it will operate in the constant current mode, which may be adjusted for a 1 amp charging rate.
- Page 21 The function of the Remote Error Sensing can only be applied to the Constant Voltage mode as shown in Figure 6-3. The feedback point of power supply must start from the load terminal directly. Therefore, the power supply can display its function on the load terminal instead of output terminal.
- Page 22 6-6. Remote Control Short the Remote Control terminal for output ON, and open the Remote Control terminal for output OFF. 6-7. OVP Setting Firstly, adjust the OVP ADJ knob clockwise to the maximum OVP, then adjust output voltage to reach the voltage of OVP. Secondly, adjust the OVP ADJ knob counter-clockwise slowly until the OVP message appears.
- Page 23 7. MAINTENANCE WARNING The following instructions are used by qualified personnel only. To avoid electrical shock, do not perform any servicing other than the operating instructions of the manual unless you are qualified to do so. 7-1. Fuse Replacement If the fuse blown, the CV or CC indicators will not light and the power supply will not operate. The fuse should not normally blow unless a problem has developed in the unit.
- Page 24 C. Adjust trimmer VR301 for a reading on the multi-meter to be 18.50V for SPS-1820, 36.50V for SPS-3610, and 60.50V for SPS-606, 24.5V for SPS-2415, 12.5V for SPS-1230. D. Adjust trimmer pot VR2 to set the reading value of voltmeter as same as the one shown on the multi-meter..
- Page 25 Fig. 7-1 Adjustment Location Fig. 7-2 Adjustment Location Fig. 7-3 Adjustment Location www.valuetronics.com...
- Page 26 7-4 Cleaning To clean the power supply, use a soft cloth dampened in a solution of mild detergent and water. Do not spray cleaner directly onto the instrument, since it may leak into the cabinet and cause damage. Do not use chemicals containing benzene, benzene, toluene, xylem, acetone, or similar solvents.
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