iSMA CONTROLLI iSMA-B-24I Manual

iSMA-B-24I
DIGITAL INPUTS
Dry contact
I1 I2 I3
Shielded
Twisted Cable
Output current ~1 mA
RS485 TERMINATION
Jumpers
must be
shorted to
enable
biasing
The performances stated in this sheet can be modifi ed without any prior notice.
Status of digital inputs
Status of digital inputs
I4 G0
Bottom view of the board
www.ismacontrolli.com
Power supply DC: 24 V ± 20%, 1 W; AC: 24 V ± 20%, 3.2 VA
Digital inputs 24 dry contact inputs, high-speed pulse counter up to 100 Hz
Interface RS485 half duplex, Modbus or BACnet, up to 128 devices on the bus
Address Set by switch in the range from 0 to 99
Baudrate Set by switch in the range from 4800 to 115200 bps
Ingress protection
IP20 - for indoor installation
rating
Operating: -10°C to +50°C (14°F to 122°F)
Temperature
Storage -40°C to +85°C (-40°F to +185°F)
Relative humidity 5 to 95% RH (without condensation)
Connectors Separable, max 2.5 mm
Dimensions 106.30 x 113.60 x 62.00 mm (4.19 x 4.47 x 2.44 in)
Mounting DIN rail mounting (DIN EN 50022 norm)
Housing material Plastic, self-extinguishing PC/ABS
TOP PANEL
mini USB
RS485 communication
Switch for setting baudrate, protocol,
and restoring the default settings
Switches for setting the device address
Address = S2*10 + S1
Power supply
COMMUNICATION
DIM476en | 1
SPECIFICATION
(18–12 AWG)
2
POWER SUPPLY
BLOCK DIAGRAM
+3.3V
to μP
Digital Inputs
Digital Inputs
+3.3V
to μP
Issue rev. 2 | 12/2024
st
page 1