Pepperl+Fuchs LB2104A Digital Output with Position Feedback

Pepperl+Fuchs LB2104A
Item Number: LB2104A
  • 1 digital output, 2 digital inputs
  • Inputs and output Ex ia
  • Mounting in Zone 2, Class I/Div.2 or in the safe area
  • Positive or negative logic selectable
  • Simulation mode for service operations (forcing)
  • Line fault detection (LFD)
  • Permanently self-monitoring
  • Output with watchdog
  • Module can be exchanged under voltage
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  • Datasheet
  • Alternative numbers
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  • Comments
Open loop voltage22 V
Shock resistanceEN 60068-2-27
Electromagnetic compatibilityNE 21
Connectionremovable front connector with screw flange (accessory)
wiring connection via spring terminals (0.14 ... 1.5 mm2) or screw terminals (0.08 ... 1.5 mm2)
Power dissipation1 W
Codingoptional mechanical coding via front socket
UL approvalE106378
EU-type examination certificatePTB 03 ATEX 2042 X
EAC approvalRussia: RU C-IT.MIII06.B.00129
Dimensions16 x 100 x 102 mm (0.63 x 3.9 x 4 inch)
Vibration resistancefrequency range 10 ... 150 Hz; transition frequency: 57.56 Hz, amplitude/acceleration В± 0.075 mm/1 g; 10 cycles
frequency range 5 ... 100 Hz; transition frequency: 13.2 Hz amplitude/acceleration В± 1 mm/0.7 g; 90 minutes at each resonance
Occupied slots1
Vibration resistanceEN 60068-2-6
Connectionbackplane bus
Voltage8.2 V
Ambient temperature-20 ... 60 В°C (-4 ... 140 В°F)
Massapprox. 110 g
IECEx approvalBVS 09.0037X
Supplementary informationEC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see
Power consumption2 W
Connectionchannel I: 2+, 5-; channel II: 3+, 6-
Degree of protectionIP20 when mounted on backplane
System informationThe module has to be mounted in appropriate backplanes (LB9***) in Zone 2 or outside hazardous areas. Here, observe the corresponding declaration of conformity.
For use in hazardous areas (e. g. Zone 2, Zone 22 or Div. 2) the module must be installed in an appropriate enclosure.
Environmental testEN 60068-2-14
Line fault detectioncan be switched on/off for each channel via configuration tool
Number of channels1
Interfacemanufacturer-specific bus to standard com unit
CertificatePF 08 CERT 1234 X
Connectionchannel I: 1+, 4-
Current limit52 mA
Rated voltage12 V DC , only in connection with the power supplies LB9***
Storage temperature-25 ... 85 В°C (-13 ... 185 В°F)
Rated valuesacc. to EN 60947-5-6 (NAMUR)
LED indicationLED green: supply
LED red: line fault, per channel
LED yellow: signal (status), per channel
Line fault detectioncan be switched on/off for each channel via configuration tool , also when turned off (every 2.5 s the valve is turned on for 2 ms)
Watchdogwithin 0.5 s the device goes in safe state, e.g. after loss of communication
ATEX approvalPF 08 CERT 1234 X
PTB 03 ATEX 2042 X
Relative humidity95 % non-condensing
Shock resistanceshock type I, shock duration 11 ms, shock amplitude 15 g, number of shocks 18
Damaging gasdesigned for operation in environmental conditions acc. to ISA-S71.04-1985, severity level G3
Switching point/switching hysteresis1.2 ... 2.1 mA / В± 0.2 mA
Internal resistor1 kΩ
Minimum pulse duration1 ms
Damaging gasEN 60068-2-42
Internal resistor220 Ω
Response time20 ms (depending on bus cycle time)
Number of channels2
Degree of protectionIEC 60529
Relative humidityEN 60068-2-56
Connectionbackplane bus


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