HCS-3400/3402/3404 USB
Remote Programmable Laboratory Grade Switching Mode Power Supply
User Manual
1. INTRODUCTION
This family of efficient, upgraded SMPS with small form factor, auto cross over CV CC, 3 VI presets, remote control
offers unique solution for various loading conditions and applications.
The dual action (coarse/fine tune) rotary encoder tuning with MCU makes setting the voltage and current levels ever so
smooth, precise and fast. Setting, changing, and checking the current limit level can be done easily without sparking the
output poles.
The remote control functionality allows the output power on/off, voltage ¤t be adjusted without touching the
front panel of the power supply.
The USB port is added for access to computer to run cyclical operation with Max. 20 programmable sets of preset of
voltage and current with different time duration and up to 999 cycles.
It is suitable for a wide range of applications such as laboratory, telecommunication, production testing, field test of
voltage critical distant load, powering of dc network and etc...
The 3 user defined presets facilitate quick access to frequently used VI settings.
2. WARNING
• Do not use this power supply near water.
• Do not operate or touch this power supply with wet hands.
• Do not open the casing of the power supply when it is connected to ac mains.
• Refer all servicing to qualified service personnel only.
• Before replacing the AC fuse at AC socket, find out and clear up the cause first.
• Replace the AC fuse with the same type and rating as the original fuse.
• The max. output voltage of Model HCS-3404 is over 60VDC, avoid touch the metal contact part of the output
terminals.
3. CAUTION
• Use a grounded 3 pin AC source.
• This unit is for indoor use only.
• Do not operate or place this unit in a humid, dusty, in direct sunlight location or near any heat source.
• Before plugging into local AC mains, check with the rating label at the back of the unit.
• Do not block any ventilation openings of the unit.
• This unit must be used within the specified rating, regular excessive continuous loading may cause damage to the
power supply.
• The gauge size of input power cable must be at least 0.75mm
2
and the total length of power cable must not exceed
3m.
4. OPERATION ENVIRONMENTAL CONDITION
• 10-80% R.H.
• Altitude up to 2000m
• Installation category: CAT 2
• Pollution degree: 2
• Mains supply voltage fluctuation up to ±10% of the normal voltage
