Pepperl+Fuchs HiD2844
Switch Amplifier

Pepperl+Fuchs HiD2844
  • 4-channel isolated barrier
  • 24 V DC supply (bus powered)
  • Dry contact or NAMUR inputs
  • 4 passive transistor outputs
  • Line fault detection (LFD)
  • Up to SIL 2 acc. to IEC 61508
Item Number: HiD2844
Total price: 416.15
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A piezoelectric drive excites the vibrating rod of the device to its resonance frequency. If medium covers the vibrating rod, the rod's vibrating amplitude changes (the vibration is damped). The electronics of the device compare the actual amplitude with a target value and indicates whether the vibrating rod is vibrating freely or whether it is covered by medium.

Safety Integrity Level (SIL)SIL 2
ConnectionSL1: 8a(+), 7a(-); 8b(+), 7b(-); 10a(+), 9a(-); 9b(+), 10b(-)
CertificatePF 11 CERT 2109 X
Degree of protectionIEC 60529
ConnectionSL1: 1a(-), 1b(-); 2a(+), 2b(+)
Signal level1-signal: (external voltage) -1 V
0-signal: blocked output (off-state current max. 50 andmicro;A, typical 5 andmicro;A)
IECEx approvalIECEx TUN 04.0012
ConnectionSL2: 5a(+), 5b(-); 1a(+), 1b(-); 3a(+), 3b(-); 7a(+), 7b(-)
Rated current15 mA at 24 V (per channel)
Switching pointcontact open 0.2 ... 1.2 mA, contact closed 2.1 ... 6.5 mA
Power dissipation0.35 W at 24 V (per channel)
Massapprox. 140 g
Galvanic isolationEN 50178
Outputone optocoupled transistor per channel
Labelingspace for labeling at the front
Switching frequency< 2 kHz
Configurationvia DIP switches
Connection sidefield side
Degree of protectionIP20
Electromagnetic compatibilityNE 21:2006
For further information see system description.
Ambient temperature-20 ... 60 В°C (-4 ... 140 В°F)
Display elementsLEDs
EU-Type Examination CertificateCESI 02 ATEX 086
Connection sidecontrol side
Signal typeDigital Input
Line fault detectionbreakage 0 ... 0.2 mA, short-circuit 6.5 mA ... maximum value
Mountingon Termination Board
Dimensions18 x 106 x 128 mm (0.7 x 4.2 x 5 inch)
Output typeopen collector transistor (internal fault bus)
Rated voltage30 V
Rated current50 mA
Rated valuesacc. to EN 60947-5-6 (NAMUR)
Control elementsDIP-switch
Connectable sensor typespotential free contact or proximity sensor
ConnectionSL1: 6b
Rated voltage20.4 ... 30 V DC bus powered via Termination Board


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