PeakTech 6227 Laboratory Switching Mode Power Supply - Operation Manual
1. Safety Precautions
This product complies with the requirements of the following European Community Directives: 2014/30/EU (Electromagnetic Compatibility) and 2014/35/EU (Low Voltage) as amended by 2014/32/EC (CE-Marking).
To ensure safe operation of the equipment and eliminate the danger of serious injury due to short-circuits (arcing), the following safety precautions must be observed. Damages resulting from failure to observe these safety precautions are exempt from any legal claims whatever.
- Check the mains voltage setting before connecting the device.
- Connect the mains plug of the equipment only to a mains outlet with earth connection.
- The instrument must be set up so that the power plug can be removed from the socket easily.
- Prior to connection of the equipment to the mains outlet, check that the available mains voltage corresponds to the voltage setting of the equipment.
- Do not place the equipment on damp or wet surfaces.
- Do not cover the ventilation slots of the cabinet to ensure that the air is able to circulate freely inside.
- Do not insert metal objects into the equipment by way of the ventilation slots.
- Do not place water-filled containers on the equipment (danger of short-circuit in case of knock over of the container).
- Replace a defective fuse only with a fuse of the original rating. Never short-circuit fuse or fuse holding.
- Check test leads and probes for faulty insulation or bare wires before connection to the equipment.
- Never touch the tips of the test leads or probe.
- Comply with the warning labels and other info on the equipment.
- Do not subject the equipment to direct sunlight or extreme temperatures, humidity or dampness.
- Do not subject the equipment to shocks or strong vibrations.
- Do not operate the equipment near strong magnetic fields (motors, transformers etc.).
- Keep hot soldering irons or guns away from the equipment.
- Allow the equipment to stabilize at room temperature before taking up measurement (important for exact measurements).
- Periodically wipe the cabinet with a damp cloth and mild detergent. Do not use abrasives or solvents.
- The device is suitable for indoor use only.
- Do not operate the meter before the cabinet has been closed and screwed safely as terminals can carry voltage.
- Do not store the meter in a place of explosive, inflammable substances.
- Do not modify the equipment in any way.
- Do not place the equipment face-down on any table or work bench to prevent damaging the controls at the front.
- Opening the equipment and service and repair work must only be performed by qualified service personnel.
- Laboratory power supplies are not battery chargers and do not have special protection against reverse voltage and false polarity. Do not use for charging batteries!
- Do not operate the device to power inductive loads, such as electric motors, which act as a generator during overrun and thus can produce a reverse voltage!
- Electronic devices should only be operated by qualified personnel.
Cleaning the cabinet
Prior to cleaning the cabinet, withdraw the mains plug from the power outlet. Clean only with a damp, soft cloth and a commercially available mild household cleanser. Ensure that no water gets inside the equipment to prevent possible shorts and damage to the equipment.
2. Introduction
The DC power supply P 6227 is equipped with a high-quality code potentiometer to achieve high stability of the DC voltage and the DC output. It is a constant voltage power supply, which provides a freely adjustable output voltage between 0V and 60V DC.
The output current adapts to the output voltage and can be up to 6A at 25V DC or only 2.5A at 60V DC. If the voltage is regulated via 25V DC, the maximum current drops continuously up to 60V DC, so regulation follows the output voltage. The coarse and fine adjustment can be switched as required by pressing a button. The voltage gradation is precise with 1V or 10mV and the current setting in 100mA or 1mA steps.
The model also has two 5V / 1A USB interfaces, which are used e.g. to power single-board computers and development boards.
- Modern laboratory power supply in switching power supply technology
- 4-digit color LCD display for current and voltage
- Voltage and current presetting
- Main output can be switched on and off
- USB outputs can be switched on and off
- Coarse (1V / 100mA) and fine adjustment (10mV / 1mA)
- Temperature controlled fan
- Constant current and short circuit proof
- 4mm safety sockets
3. Technical Data
| Specification | Value |
|---|---|
| Operation voltage | 115 / 240 V AC (+/- 10%); 50/60 Hz switchable extern |
| Protection | Constant current and short-circuit protection |
| Main Display | 2 x 4-Digits Color-LCD for Voltage & Current |
| Safety | Protection Class 1; EN-61010-1 |
| Dimensions (WxHxD) | 80 x 160 x 260 mm |
| Weight | 1.6 kg |
| Accessories | Power cable and manual |
| Output voltage | 0 ~ 60 V DC |
| Output current | 0 ~ 6 A DC |
| Output capacity | 150 W (max.) |
| Line regulation | ≤ 0.1% ± 3 mV |
| Load regulation | ≤ 0.05% ± 5 mV |
| Ripple and noise (CV) | ≤ 5 mV rms |
| Voltage indication accuracy | ± 0.5 % + 5 digits |
| Current indication accuracy | ± 0.5 % + 5 digits |
| Current limit accuracy (CC) | ≤ 0.2% ± 3 mA |
| Current limit accuracy (CV) | ≤ 0.5% ± 5 mA |
| Ripple and noise (CC) | ≤ 20 mA rms |
4. Operation
4.1. Controls and description of front-panel
Rear Panel:
- (1) Switch: Power On/Off
- (2) Power Plug: AC Input Socket with fuse holder
- (3) Fuse: Closed Fuse Holder
Front Panel:
- (4) Voltage setting: Press the "V" key to enter voltage setting mode. Use the turning knob (11) to adjust the voltage. Tap the knob to switch between coarse and fine adjustment.
- (5) Current setting: Press the "I" key to enter current setting mode. Use the turning knob (11) to adjust the current. Tap the knob to switch between coarse and fine adjustment.
- (6) Output On/Off: After setting voltage and current, press the "Output" button to switch the output on or off.
- (7) Plus Terminal: Positive (+) output, Red color.
- (8) GND Terminal: PE Green color, connected to metal casing.
- (9) Minus Terminal: Negative (-) output, Black color.
- (10) USB output sockets: Press "V" (4) and "I" (5) simultaneously. The "USB" symbol will flash on the screen. Then press the "Output" button to control the USB interface output. If no operation occurs for 3 seconds, the USB control mode will exit, and the USB icon will display normally.
- (11) Voltage/Current adjustment: In Voltage/Current setting mode, press this knob to switch between coarse/fine adjusting mode. Turn clockwise to increase the setting value, and counterclockwise to reduce it.
- (12) USB display: Shows the real-time output of voltage and current from the USB interface. The displayed current value is the sum of both USB interfaces.
- (13) LCD Main Displays: 4-digit voltage and current meter, indication for (CV) Constant Voltage mode, (CC) Constant Current mode, Output Terminal on/off state, and Lock-in function status.
- (14) KeyLock: Press knobs (4) and (6) simultaneously for 3 seconds to activate the key lock. Press them again for 3 seconds to unlock.
4.2 Operation Details
4.2.1 Constant Voltage (CV) and Constant Current (CC)
The power supply acts as a constant voltage source (CV) as long as the load current is less than the preset current limit. When the load current is greater than or equal to the preset current limit, the power supply automatically switches to Constant Current mode. The voltage drops, (CC) is displayed on the LED display panel, and it operates as a constant current source. When the load current falls below the preset current limit, the power returns to the constant voltage (CV) mode.
4.2.2 Presetting the current limit value (CC)
If necessary, switch off the output using the Output button (6) until the symbol appears. Press the "I" button (5) to select the current until one digit of the power indicator flashes. If necessary, press the rotary control (11) to change the digit position. Turn the knob (11) to set the desired maximum current value. When the output is switched on with the Output button (6), the current display will change from the set maximum value to the actual value.
Note: A connected load only uses the actual required current, which may be less than what you have set. You cannot force a load to consume more power than it actually needs.
4.2.3 Connection and operation procedures
After comparing the voltage values with the nameplate, plug in the mains plug. Turn on the power; the LCD should light up simultaneously. The symbol (CV) should be displayed. If a lower current limit is not required, set the desired output voltage and connect your load to the jacks, positive to positive and negative to negative. Turn on the output and check if the display shows (CV). If the display shows (CC), either your preset current limit is too low, or your load requires more voltage and current. You must re-check your load's voltage and current requirements and increase the voltage or current accordingly until (CV) appears, otherwise the power supply will remain in CC current limit.
4.2.4 Overvoltage protection of the output (OVP)
This feature protects the connected load in case of a malfunction in the output voltage control circuit. The maximum output voltage during operation will not exceed 30% of the set voltage value.
5. Note
- If the power supply cannot be turned on while the mains supply is on, the fuse of the laboratory power supply may have triggered. Turn off the laboratory power supply, unplug the power cord, and replace the fuse. If fuse replacement is unsuccessful, a device defect may be present. Consult your dealer for an inspection.
- If the output voltage in constant voltage mode is lower than the preset voltage and the CC indicator lights, the power supply has automatically switched to constant current mode. Check the connected load or increase the output current.
- If the output current in constant current mode is lower than the preset current and the CV indicator lights, the power supply has automatically switched to constant voltage mode. Check the connected load or increase the output voltage.
- If the output voltage in constant voltage operation is not stable or jumps, it is likely that the mains supply voltage has dropped below 90% of the rated value. If the problem is not caused by the mains supply voltage, contact your dealer.
6. Caution!
The mains power must be switched off before servicing, and servicing should only be performed by qualified personnel. The unit should be stored in a dry and well-ventilated place, and the power cord removed if storing for long periods.
Laboratory Power Supplies are not designed for charging batteries. Any such use can cause serious damage to the device, for which claims are exempt.
Do not operate the device to power inductive loads, such as electric motors, which act as a generator during overrun and thus can produce a reverse voltage. This could damage the power supply.
Replace fuse only with an identical fuse.
7. General Information & Calibration
All rights, including translation, reprinting, and copying of this manual or parts thereof, are reserved. Reproduction of any kind (photocopy, microfilm, or other) is only permitted with written permission from the publisher.
This manual reflects the latest technical knowledge. Technical changes made in the interest of progress are reserved.
PeakTech herewith confirms that all devices meet the specifications mentioned in our documentation and are delivered factory-calibrated. A recalibration after one year is recommended.
PeakTech® 07/2019 / Pt / Ehr.
PeakTech Prüf- und Messtechnik GmbH - Gerstenstieg 4 – DE-22926 Ahrensburg / Germany
Phone: +49-(0)4102-973 98 80 | Fax: +49-(0)4102-973 98 99 | Email: info@peaktech.de | Website: www.peaktech.de
