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BAS-2520
20-channel Softlogic Digital Controller

BAS-2520 Introduction

BAS-2520 is a 20-channel stand-alone controller for for building automation control applications. Designed as a typical DDC (Direct Digital Controller), but customized for use in buildings, it is designed with universal I/O, a thin wall mountable case, and comes with embedded control algorithms for HVAC, lighting, security and other algorithms that are used
in building automation applications.

BAS-2520 Features

 Stand-alone programmable controller
 Pre-built BA Control Function Blocks
 Supports IEC61131-3 control languages
 Supports Modbus/RTU and BACnet protocols
 Up to 115.2 kbps communication speed
 Max. I/O expansion up to 80 points for unique controller
 Built-in Watchdog Timer
 Wall mounting panel case


BAS-2520 Specification

General
 Certifications CE, FCC class A
 Channels Analog Inputs: 4
Analog Outputs: 4
Digital Inputs: 8
Digital Outputs: 4
(Local bus for expansion up to 80 channels)
 Dimensions (WxLxH) 171 x 242 x 35 mm
 LED Indicators Battery, power, communication (for RS-485), DO
 Mounting Wall
 Power Consumption 15 W
 Power Input 24 VAC or 18 ~ 36 VDC
 Watchdog Timer Yes (Programmable)
Communications
 Analog Input Signals 4 ~ 20 mA, 0 ~ 20 mA, 0 ~ 10 VDC,
RTD (PT100/PT1000), Thermistor (3k)
(Software configurable)
 Analog Output Signals 4 ~ 20 mA, 0 ~ 20 mA, 0 ~ 10 VDC
 Digital Input Signals Dry Contact Logic level 1 : close
Logic level 0 : open
Wet Contact Logic level 1 : 10 ~ 30 VDC
Logic level 0 : 3 VDC max.
 Digital Output Signals Relay Output (Rating : 240 VAC, 3 A), LED indicator,
manual switch for ON/AUTO/OFF selection
 Interface Port 1 : RS-232 for programming,
Port 2 : RS-485 for network
Plug-in screw terminal (#14~22 AWG)
1 x expansion bus connector
 Network Nodes Up to 64
 Transmission Distance 1.2 km (4000 feet)
 Transmission Protocol Modbus/RTU, Bacnet MS/TP
 Transmission Speed 1200, 2400, 9600, 19200, 38.4 k, 57.6 k, 115.2 kbps
Environment
 Humidity 5 ~ 95% non-condensing
 Operating Temperature -10 ~ 60 C (14 ~ 140 F)
 Storage Temperature -25 ~ 85 C (-13 ~ 185 F)

BAS-2520 Ordering Information

 BAS-2520-A 20-Channel Softlogic Digital Controller


BAS-2520
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