CPS-EC1000(R2) MANUAL
The Camtec CPS-EC series is a high precision switch mode power supply for an upscale demand. The unit is
C/V adjustable. It is engineered and manufactured by CAMTEC in Germany. The designed meets challenging
applications like railway, complex drives, battery charging for DC-UPS, test-stands, machine-building and
professional LED lighting. The power supply provides a low ripple-noise, a precise load-regulation and high
efficiency up to 94%. High-end long-life capacitors guarantee an extended hold-up-time and an extraordinary
lifetime of the power supply. The circuit design starts complex loads easily. The internal control circuit manages
illegal operating conditions to prevent your system from damages. The CPS-EC series features active high input
transients with suppressor diodes, X2-capacitors and varistors. All inputs, outputs and feature connections are
galvanic isolated. The design rules set value on extended interference immunity and safety. The unit is designed
in accordance with the EN60950-1, EN62368-1, EN61010-1, EN61010-2-201 and the EMC-compatibility with
EN55032.
Design Conception
The CPS-EC power supply series realizes very high-power efficiency in a
space-saving housing. Latest generation electrical devices relate to the
high reliability of all CAMTEC products. The CAMTEC philosophy is, to
employ 125°C low ESR ultra long-life capacitors where expedient to
achieve a superior lifetime of the product. The CPS-EC power supply is
made for high reliable and demanding industrial applications, railway,
unbreakable power supply charger (DC-UPS), professional high-power
lighting (floodlight, production hall) and for telecom & demanding IT
applications.
Voltage Setting Potentiometer
The output voltage limit can be adjusted with a 15 turns high precision
potentiometer. The listed values are guaranteed by the factory. The
tolerance of the upper margin is -0/+5%. The tolerance of the lower margin
is -5%/+0%. The output voltages cover the typical cell voltage range of
standard lead acid batteries.
Current Setting Potentiometer
The output current limit can be adjusted with a 15 turns high precision
potentiometer. The listed values are guaranteed by the factory. The
tolerance of the upper margin is -0/+5%. The tolerance of the lower margin
is -5%/+0%.
Output Current Monitoring
The CPS-EC power supply features a 0-5Vdc signal output. It is a real-
time linear signal and indicates the current consumption of the load. The
measuring point is directly at the output connection of the device.
Sensing
The device has a sense operation mode to compensate a voltage drop at
the load line.
Inhibit contact (Interlock)
The inhibit inputs can be connected to a safety contact or a safety relay.
When the contact is open the power supply will remain in a completely
locked shut down mode. The unit powers up as soon as the contact is
closed.
External Shutdown feature
All CPS-EC units are featured with a shutdown (open collector).
DC-ok Power Good Relay
The PG Relay connection indicates over temperature, low DC-voltage at
the output, low AC supply voltage at the input, the inhibit and the shutdown
mode.
Galvanic Isolation
The power supply is galvanic isolated between the input and the output. All
features like Shut Down, Inhibit, Power Good Relay, Sensing and the Current
Monitoring are connected to the DC power outputs.
Thermal shutdown
The CPS-EC series is featured with a thermal overload shut down and auto
recovery behaviour.
Over Voltage Protection
Ticker mode and auto recovery
Short Circuit Protection
A continuous short circuit does not cause damage to the power supply. The CPS-
EC delivers constant current and 0 output voltage.
It recovers automatically after the short circuit is released.
Open Circuit Protection
The CPS-EC series is continuously open circuit protected. The device delivers a
stable output voltage and no current. If a load is immediately connected to the
device, the power supply stabilizes within 1ms. It does not overshoot the output
voltage.
Power Up Ramp
The devices have a soft start ramp when powering up. The device does not either
overshoot the voltage nor does the output flutter – independent if a load is
connected or not.
Inrush Limiter
The power supply provides an electronic inrush current limiter that works absolute
accurately with a low inrush of only 9,8A RMS value. The limiter works
independent from the ambient temperature and its tolerance is only ±10%.
Current Voltage Chart, CV & CC mode
The CPS-EC series provides a perfect current voltage chart. It has no fold back or
other abnormalities. The output voltage can drop down to zero volts when the
power supply is overloaded. The unit delivers a stable and constant current to the
outputs. The device can be used either in the CV or in the CC mode (auto switch).
