User Instructions

ManualsBrandsPulsar ManualsAccessories for series: EN54C/LCDInterface RS485-TTL EN54C-LCD

www.pulsar.pl INTR-C

1. General description.

The RS485-TTL „INTR-C” interface is intended for cooperation with PSUs of the EN54C-LCD series.

Interface enables connecting of PSU to RS485 bus remaining galvanic isolation. Communication in RS485 bus is

due to a two-way channel, differential in a half-duplex system where transmitting and receiving data is alternate.

Construction of an RS485 bus enables implementation of a remote PSU monitoring system in the

PowerSecurity application or in a master system, in accordance with the diagram below.

Fig. 1. A block diagram of a remote PSU monitoring system.

The diagram above shows PSUs connected to a RS485 bus ending with an INTRE-C Ethernet interface.

Up to 247 INTR-C interfaces may be connected to a single RS485 bus.

TABLE OF CONTENTS

1. General description. ................................................................................................................................ 2

2. Components arrangement. ..................................................................................................................... 3

3. Connection to RS485 bus. ....................................................................................................................... 3

3.1 System structure in the RS485 bus. ..................................................................................................................................... 3

3.2 Connecting the interface to the bus. .................................................................................................................................... 3

4. Specifications. .......................................................................................................................................... 4

Features :

 power supply via „SERIAL” socketc

 permission of Scientific and Research Centre for Fire Protection - National Research Institute for use with

power supplies of EN54C-LCD series

 connection of PSU of EN54C-LCD series with RS485 bus

 a possibility of connection of up to 247 interfaces to a RS485 bus

 communication speed up to 115200 bauds

 galvanic isolation

 half-duplex communication system

 cooperation with the PowerSecurity web application

 optical indication

 warranty: 3 years from production date