iSMA-B-AAC20 Hardware User Manual
www.ismacontrolli.com
DMP239en | 1st Issue rev. 0 | 02/2022
page 6 of 42
Digital Outputs
(Relays)
Number of outputs
4
Contact material
AgSnO2
Resistive load
3 A at 230 V AC or 3 A at 30 V DC
Inductive load
75 VA at 230 V AC or 30 W at 30 V DC
COM1
RS485 interface
Up to 128 devices
Communication protocol
Modbus RTU/ASCII (client)
Port
RJ12
Baud rate
4800-115200
COM2
RS485 interface
Up to 128 devices
Communication protocol
Modbus RTU/ASCII (client/server)
BACnet MS/TP (client/server)
Port
Screw connector
Baud rate
4800-115200
ETH1
Ethernet interface
2 ports, switch mode
Baud rate
10/100 Mb/s
USB1
USB 2.0
Type A
Communication
Open protocols
Modbus RTU/ASCII
Modbus TCP/IP
BACnet MS/TP
BACnet IP
M-Bus IP
SOX protocol
oBIX
1-Wire
DALI (iSMA-B-AAC20-D, iSMA-B-AAC20-LCD-
D)
Free software: AAC20 Updater & iSMA Tool
Built-in web server
Ingress Protection
IP rating
IP40
Temperature
Storage
-40˚C to +85˚C
(-40°F to +185°F)
Operating
-10˚C to +50˚C (14°F
to 122°F)
