20
16-11
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H-System – Isolated Barriers and Termination Boards for HIMA
Technical Specifications
6
Technical Specifications
6.1
Technical Data
6.1.1
Electrical Data
Power Supply to the Isolated Barriers
• HiC devices: 19.6 V DC to 30 V DC
• HiD devices: 20.4 V DC to 30 V DC
The voltage drop on the termination board via the decoupling diodes must be
considered.
Each isolated barrier is internally protected. The termination boards have
redundant power supply connections with fuses that can be replaced by the
customer.
Non-Ex Signals or Signals in the Drive Circuit
• 0/4 mA to 20 mA signal level according to NE43
• 0/2 V to 10 V signal level according to NE43
• 0/1 V to 5 V signal level according to NE43
• Current output HART compatible
• Current input HART compatible
• Digital output: active or passive electronic output 100 mA/30 V, short-circuit
protected
• Relay output 2 A, minimum load 1 mA/24 V
• Logic level 24 V according to IEC 60946
• Functional isolation or safe isolation according to IEC 61140 and
NAMUR NE23
Ex Signals or Signals in the Field Circuit
• Transmitter power supply up to 17 V DC
• Current output HART compatible
• Pt100, 2-, 3-, (4)-wire technology
• Resistor 0
to 400
with freely definable characteristic
• Potentiometer
• Thermocouples of all types, internal cold junction, external reference
• Current output HART compatible
• Digital input according to NAMUR EN 60947-5-6
• Digital output for standard Ex-i valves, short circuit-protected
Characteristic Safety Values
• MTBF:
M
ean
T
ime
B
etween
F
ailures
System Description H-System
–
Isolated Barriers and Termination Boards for HIMA
