© EPS Stromversorgung in 2022, this information is subject to change without notice
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30000800_manual_psb_10000_4u_30kw_en_04
1.9
Construction and function
1.9.1
General description
The power supplies of the PSB 10000 4U series are so-called bidirectional devices, incorporating the function of a laboratory
power supply (source) and an electronic load (sink) into one unit. They allow for easy setup of applications according to the
source-sink principle with a minimum of required hardware and cabling. Switching between source and sink operation is
seamless and without delay at zero point.
The sink feature furthermore includes an energy recovery function, same as the one in series ELR 10000, which inverts the
consumed DC energy with an efficiency of up to 96% and feeds it back into the local mains.
Apart from basic functions of power supplies, set point curves can be generated by the integrated function generator (sine,
rectangular, triangular and other curve types). Arbitrary generator curves (99 points) can be saved to and loaded from a USB
stick. Some of the functions even offer to dynamically switch between source and sink operation mode by setting up positive
(for the source) or negative (for the sink) current set values.
For remote control the devices are provided as standard with USB and Ethernet ports on the rear side, as well as a galvani-
cally isolated analog interface. Via optional plug-in interface modules, another digital interface such as for RS232, Profibus,
ProfiNet, ModBus TCP, CAN, CANopen or EtherCAT can be added. These enable the devices to be connected to standard
industrial buses simply by changing or adding a small module. The configuration, if necessary at all, is simple.
In addition, the devices offer as standard the possibility for parallel connection in so-called Share bus operation for constant
current sharing, plus a true master-slave connection with totaling of all actual values is also provided as standard. Operating
in this way allows for up to 64 units to be combined to a single system with a total power of up to 1920 kW.
Alternatively to the air-cooled versions there are also water-cooled version available which are usually configured and offered
in cabinet systems with a complete water cooling distribution inside. For DIY water-cooled systems single units can also be
obtained upon request.
1.9.2
Block diagram
The block diagram illustrates the main components inside the device and their relationships.
There are digital, microprocessor controlled components (KE, DR, HMI), which can be target of firmware updates.
Controller
(DR)
Commu-
nication
(KE)
HMI
MS
USB
USB
Ana
log
Share &
Sense
PSB 10000
Block diagram
=
≈
=
≈
AC
DC
Commu-
nication
(KE)
Power block
Any
bus
ETH