Modbus Rtu Interface; Adapting The Upstream Fuse /Transformer Options; Collective Fault Signal - Pfannenberg Premium Controller X Serie Instrucciones De Servicio

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3.5.4

Modbus RTU Interface

 Cooling units with an X-Series (XC) Premium Controller have a Modbus RTU Interface (X58). It allows for
integration into an industrial field bus system.
 The core function of the field bus is to ensure quick, cyclical transfer of input and output data. Each bus
subscriber within a network must have a unique address to allow it to be directly addressed and identified by
other bus subscribers.
 Function: The Modbus RTU interface (X58) is based on a Host/Client communication protocol
The host, such as a PC, can connect to multiple clients, such as measurement and control systems. In
general, the host initiates the communication. The host determines which data points should be read out by the
client and at which address the readout should begin. The readout data are sent from the client to the host in a
readable structure. If an error arises during the readout process, then an error code replaces the data at that
position. The error code is passed to the host.
 The data points can be read and written via an interface.
 The technical description and detailed functional description of the data points is an individual, option extension
available from Pfannenberg. The contact form can be found
3.5.5

Adapting the upstream fuse /transformer options

 Only cooling units with the rated operating voltage 400V / 460V can be optionally connected to a different mains
voltage.
 Cooling units with 230V / 115V do not have any transformer options. Therefore, adaptation of the upstream fuse
is not necessary.
 UL-conformity with the following fuses: Category "ClassCC", slow-burning.
3.5.6

Collective fault signal

 Two connections are provided for connection of the collective fault signal. They are marked with the item
designation SK; see
 The fault signaling contact is potential-free .
 Ensure that the contact is loaded with a maximum of 230V, 1 A.
Operating Manual DTS and DTI 6X1E Premium Controller X-Series (XC) 086100018 © Pfannenberg GmbH
Figure 12 – Modbus RTU Interface (X58)
Electrical connection.
HERE.
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