Short description
I/O module 8 digital outputs 24 VDC for 1-wire connections
General information
B&R ID code 0xF321
Status indicators I/O function per channel, operating state, module status
Module run/error Yes, using LED status indicator and software
Outputs Yes, using LED status indicator and software (output error status)
Supply voltage monitoring Yes, using LED status indicator and software (output error status)
Power consumption
Bus 0.26 W
Internal I/O -
External I/O 0.81 W
Additional power dissipation caused by actuators (resistive) [W] +0.336
CE Yes
UL cULus E115267
Industrial control equipment
Digital outputs
Variant Current-sourcing FET
Number of output groups 2
Nominal voltage 24 VDC
Switching voltage 24 VDC -15% / +20%
Nominal output current 2 A
Total nominal current 8 A
Connection type 1-wire connections
Output circuit Source
Output protection Thermal shutdown in the event of overcurrent or short circuit (see value "Short-circuit peak current")
Internal freewheeling diode for switching inductive loads (see section "Switching inductive loads")
Reverse polarity protection of supply voltage
Actuator power supply
Supply External
Fuse Required line fuse: Max. 10 A, slow-blow
Diagnostic status Output monitoring with 18 ms delay
Leakage current when the output is switched off 5 µA
RDS(on) 21 mΩ
Peak short-circuit current 90 A for 200 µs
Switch-on in the event of overload shutdown or short-circuit shutdown 300 ms
Switching delay
0 → 1 <300 µs
1 → 0 <300 µs
Switching frequency
Resistive load Max. 500 Hz
Inductive load See section "Switching inductive loads".
Braking voltage when switching off inductive loads Typ. 64 VDC
Insulation voltage between channel and bus 500 Veff
Additional functions Outputs can be connected in parallel to increase the output current.
Electrical properties
Electrical isolation Channel isolated from bus and I/O power supply
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitation
>2000 m Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529 IP20
Ambient conditions
Horizontal mounting orientation -25 to 60°C
Vertical mounting orientation -25 to 50°C
Derating See section "Derating".
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
Transport 5 to 95%, non-condensing
Mechanical properties
Note Order 1x terminal block X20TB12 separately.
Order 1x bus module X20BM11 separately.
Pitch 12.5+0.2 mm
Material number:
  • 8 digital outputs with 2 A
  • Source circuit
  • 1-wire connections
  • Power supply integrated in the module
  • Integrated output protection

The module is equipped with 8 outputs for 1-wire connections. The nominal output current is 2 A.

The output power supply is fed directly into the module. An additional power supply module is therefore not necessary. There is no connection between the module and the I/O power supply potential on the bus module.

Mandatory Accessories
Bus modules
X20BM11 X20 bus module, 24 VDC keyed, internal I/O power supply connected through
X20BM15 X20 bus module, with node number switch, 24 VDC keyed, internal I/O power supply connected through
Terminal blocks
X20TB12 X20 terminal block, 12-pin, 24 VDC keyed
Automation Studio HW Upgrades Version (Date) Download
V3.0 HW Upgrade (X20DO8332-1) EXE / 2 MB
V4.0 HW Upgrade (X20DO8332-1) EXE / 999 KB
Certificates Version (Date) Download
E115267 UL CoC X20 PDF / 654 KB
Documentation Version (Date) Download
Data sheet X20DO8332-1 PDF / 277 KB
Installation- / EMC-Guide PDF / 20 MB
X20 System User´s Manual PDF / 7 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X20 EPLAN P8 from V2.4 EXE / 158 MB
M-CAD (Mechan. Templates) Version (Date) Download
3D File DXF/STEP X20 Electronic module ZIP / 10 KB
3D File STEP X20 I/O-Slice ZIP / 872 KB
Dimensions PDF X20 Electronic module PDF / 3 KB

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