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Short description
I/O module 4 NAMUR inputs, special function
General information
B&R ID code 0xE221
Status indicators I/O function by channel, open line and short circuit detection by channel, operating status, module status
Module run/error Yes, using status LED and software
Short circuit Yes, using status LED and software
Open circuit Yes, using status LED and software
Power consumption
Bus 0.01 W
Internal I/O 1.5 W
Additional power dissipation caused by actuators (resistive) [W] -
CE Yes
ATEX Zone 2, II 3G Ex nA nC IIA T5 Gc
IP20, Ta (see X20 user's manual)
FTZÚ 09 ATEX 0083X
UL cULus E115267
Industrial control equipment
HazLoc cCSAus 244665
Process control equipment
for hazardous locations
Class I, Division 2, Groups ABCD, T5
DNV GL Temperature: B (0 - 55°C)
Humidity: B (up to 100%)
Vibration: B (4 g)
EMC: B (bridge and open deck)
KR Yes
Event counters
Quantity 4
Signal form Symmetrical square wave pulse or corresponding minimum pulse duration
Evaluation Every rising edge, cyclic counter
Counter size 8-bit
Input frequency
1 input active Max. 1600 Hz
2 inputs active Max. 1100 Hz
3 inputs active Max. 870 Hz
4 inputs active Max. 680 Hz
NAMUR inputs
Open-circuit detection <350 µA
Input circuit For NAMUR encoders in accordance with EN 60947-5-6
Isolation voltage between channel and bus 500 Veff
Short-circuit detection >7 mA
Open-circuit voltage 8.05 V ±0.33%
Switching amplifier internal resistance 1 kΩ ±1%
Max. short-circuit current 8.2 mA
Input delay
1 input active ≤310 µs
2 inputs active ≤450 µs
3 inputs active ≤570 µs
4 inputs active ≤735 µs
Switching threshold
Area 1.2 mA to 2.1 mA
Switching hysteresis Typ. 300 µA
Electrical properties
Electrical isolation
Channel isolated from bus

Channel not isolated from channel
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitations
>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"
Starting temperature Yes, -40°C
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation Up to 100%, condensing
Storage 5 to 95%, non-condensing
Transport 5 to 95%, non-condensing
Mechanical properties
Note Order 1x X20TB12 terminal block separately
Order 1x X20cBM11 bus module separately
Pitch 12.5+0.2 mm
Materiaal nummer:
  • 4 digital inputs
  • Input module for NAMUR encoders
  • Open line and short circuit detection
  • Each input can be used as a counter input

The module is used to transfer digital signals from NAMUR encoders according to EN 60947-5-6. In addition to NAMUR encoders, normal switches can also be used.

Verplichte accessoires
Bus modules
X20cBM11 X20 bus module, coated, 24 VDC keyed, internal I/O supply continuous
Terminal blocks
X20TB12 X20 terminal block, 12-pin, 24 VDC keyed
Automation Studio HW Upgrades Versie (datum) Download
V3.0 HW Upgrade (X20cDI4760) EXE / 1 MB
V4.0 HW Upgrade (X20cDI4760) EXE / 686 KB
Certificaten Versie (datum) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 56 KB
DNV GL Type Approval Certificate - X20 / Power Panel T30 PDF / 164 KB
E115267 UL CoC X20 PDF / 847 KB
FTZU 09 ATEX 0083X PDF / 697 KB
KR Type Approval Certificate MIL39390-AC003 (X20 System) PDF / 758 KB
Lloyds Register PDF / 506 KB
Documentatie Versie (datum) Download
Coated modules PDF / 60 KB
Data sheet X20(c)DI4760 PDF / 294 KB
X20 System User´s Manual PDF / 56 MB
E-CAD (Electro of EPLAN Templates) Versie (datum) Download
X20 EPLAN P8 from V2.4 EXE / 161 MB
M-CAD (Mechan. Templates) Versie (datum) 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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