Operating instructions

Pulsar
®
Remote monitoring (options: Wi-Fi, Ethernet, RS485, USB).
The PSU has been adjusted to operate in a system that requires a remote control of the parameters in a
monitoring centre. Transmitting data concerning PSU status is possible due to an additional, external
communication module responsible for communication in Wi-Fi, Ethernet or RS485 standard. It is possible to connect
the PSU and the computer via the USB –TTL interface.
Different connection topologies, presented later in this chapter, are only a part of possible communication schemes.
More examples can be found in the manuals dedicated to individual interfaces.
Communication via the USB-TTL interface.
The easiest way of communication between the PSU and the computer is provided by the USB-TTL "INTU”
interface. This interface allows direct connection between the computer and the PSU and is recognizable by the operating
system as a virtual COM port.
USB-TTL communication using the USB-TTL „INTU” interface.
RS485 network communication.
Another type of network communication is the RS485 communication using two-wire transmission path. To
achieve this kind of data exchange, the PSU should be equipped with the additional RS485 TTL "INTR" interface, converting
data from the PSU into the RS485 standard and the USB-RS485 "INTUR" interface, converting data from the RS485
network to the USB. Offered interfaces are galvanically isolated and protected against surges.
RS485 communication using the „INTR” and „INTUR” interfaces.
Interface USB-TTL
“INTU”
IInterface USB- RS485
“INTUR”
EN54/LCD series power supply unit
Power supply for fire alarm systems 27,6V DC
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