© EPS Stromversorgung in 2022, this information is subject to change without notice
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30000800_manual_psb_10000_4u_30kw_en_04
1.9.12
Master-Slave bus
There is a further set of connectors on the rear side of the device, comprising two
RJ45 sockets, which enables multiple compatible devices to be connected via a dig-
ital bus (RS485) in order to create a master-slave system. Connection is made using
standard CAT5 cables.
It’s recommended to keep the connections as short as possible and to terminate the
bus if required. The termination is done via digital switches and activated in the device
setup menu in group “Master-Slave”.
Figure 7 - Master slave bus ports
1.9.13
Ethernet port
The RJ45 LAN/Ethernet port on the rear side of the device is provided for communi-
cation with the device in terms of remote control or monitoring. The user has basically
two options of access:
1. A website (HTTP, port 80) which is accessible in a standard browser via the IP or the
host name given for the device. This website offers a configuration page for network
parameters, as well as an input box for SCPI commands to control the device remotely
by manually entering commands.
2. TCP/IP access via a freely selectable port (except 80 and other reserved ports). The
standard port for this device is 5025. Via TCP/IP and the selected port, communica-
tion to the device can be established in most of the common programming languages.
Using this LAN port, the device can either be controlled by commands from SCPI or
ModBus RTU protocol, while automatically detecting the type of message.
Figure 8- LAN port
Access via ModBus TCP protocol is only supported by the optionally and separately available ModBus TCP interface module.
See
”1.9.8. Interface module slot”.
The network setup can be done manually or by DHCP. Transmission speed and duplex mode are on automatic mode.
If remote control is in operation the Ethernet port has no priority over any other interface and can, therefore, only be used
alternatively to these. However, monitoring is always available.
1.9.14
Water cooling
Models with water cooling are optionally available as replacement of the default models with air-cooling. This option is built
in during the manufacturing process, so retrofitting isn’t possible. Cooling the device with water instead of air comes with a
few advantages:
•
Less ambient noise generated by the device
•
Better cooling at higher ambient temperatures
•
No direct dissipation of heat into the ambiance of the device
However, there also disadvantages:
•
The device isn’t allowed to run under load without active water flow
•
Water flow inside an electronic device includes a higher risk of damage caused by a leak or by condensation of water from
air humidity (bedewing)
The water taps are located on the rear side of the device, also see the rear view drawing in section
1.8.4. Details about the
connection, requirements and use of the water cooling can be found in section
