Remote I/O Module ANTARES 4AIOH



  • 4 channels analog in/out
    HART Ex ia IIC
  • 4 channels freely configurable as
    In or Out
  • Inputs active or passive
  • 2-, 3-, 4-conductor technology
  • Integrated bus rail
  • Installation in ATEX Zone 1/2
    or Zone 21/22
  • Hot-Swap
  • Galvanic isolation between the
  • inputs/outputs and the system
  • Line break/short-circuit monitoring
  • Plug-in and codable spring clamps


Ex II 2(1)G Ex ib [ia IIC/IIB Ga] IIC T4 Gb
Ex II (1)D [Ex ia Da] IIIC
Ex ib [ia IIC/IIB Ga] IIC T4 Gb
[Ex ia Da] IIIC
Class I, Zone 1

Ambient temperature

-20 °C up to +50 °C
-20 °C up to +60 °C (in conjunction with a distance module)


PTB 11 ATEX 2018
IECEx PTB 11.0061
DNV A-13339
TC RU C-DE.BH02.B.00005
KCS KTL 13-KB4BO-0302
KCS KTL 13-KB4BO-0303
UL BR 13.0260


The ANTARES 4AIOH Remote I/O Module is operated and supplied with power by means of the Rail Control Unit (RCU) ANTARES. This module allows the direct linking of 4 intrinsically safe 2-, 3-, 4-conductor transmitters or the output of 0 up to 20 mA or 4 up to 20 mA signals. The hot-swap capability allows the electronic unit to be replaced without disconnecting from voltage even in an explosive atmosphere. The internal and galvanically isolated bus connection is established by simply plugging the modules to the RCU. A bus rail is not necessary. Open circuit/short circuit monitoring can be programmed for each channel. The bus status messages and individual messages per channel are displayed by the LEDs. This also enables diagnostics on the module. The Software ANTARES Designer allows parameters to be set for the signal range, channel type (in or out), HART function by DTM and a 4-stage input filter for each channel. See the system description for installation instructions.

Technical data *

Protection class (EN 60529)
Enclosure: IP 30 in the ANTARES system construction
Dimensions (W x H x D) 45 mm x 110 mm x 114.5 mm
Material Enclosure material: PA
Installation Mounting rail TH 35-15 DIN EN 60715 (steel, galvanised)
Storage temperature -25 °C up to +85 °C
Humidity 5 up to 95 %, non-condensing
Vibration (EN 60068-2-6)
2 g/7 mm; 5 Hz up to 200 Hz in all 3 axes
Shock resistance (EN 60068-2-27)
15 g/11 ms, ± 3 shocks per direction
Weight approx. 390 g
Display LEDs in enclosure front:
Status: PWR, ST, ERR1, ERR2
Inputs/Outputs: 2 LEDs per Channel
1 x LED yellow, Channel setting
1 x LED red, Channel error
Interface Number of channels
4 inputs or outputs Ex i (short-circuit-proof)
Inputs active/passive
Voltage Minimum voltage at 20 mA: 16 V
Resistance Input resistance: Ri = 10 Ohm
Signal range 0 to 20 mA or 4 to 20 mA
Connection plug-in tension spring-loaded clamps,
4-pole up to 2.5 mm²
optional coding and numbering

*Refer to the documentation for more detailed information


Data Sheet - Remote I/O Module ANTARES 4AIOH

Declaration of Conformity 11-6143-7C0005