Endress+Hauser PROline promag 53 - Operation; 5.1 Quick Operation Guide

Proline Promag 53 FOUNDATION Fieldbus
30 Endress+Hauser
<
0
Checking the conditions:
Final consideration:
From a purely functional point of view the bus segment shown in the example can be
operated based on the positive results.
Technical safety considerations
using variant Promag 53***-***********G
Step 1 – compilation of technical values relevant to safety:
Fieldbus power supply (associated electrical apparatus)
FISCO Power Repeater KLD2-PR-Ex1.IEC1 (Pepperl+Fuchs):
• Nominal values:
U
o
=15 V
I
o
= 207.2 mA
P
o
=1.93 W
Described in the test certificate as “associated equipment”. Suitable for connection to
a fieldbus system based on the FISCO model.
Promag 53 (explosion protected electrical apparatus with intrinsically safe FF output):
• Nominal values:
U
i
=30 V
I
i
=500 mA
P
i
= 5.5 W
L
i
=10 µH
C
i
=5 nF
Suitable for connection to a fieldbus system based on the FISCO model.
Cerabar S (explosion protected electrical apparatus with intrinsically safe FF output):
• Nominal values FISCO:
U
i
= 17.5 V
I
i
=500 mA
P
i
= 5.5 W
L
i
=10 µH
C
i
=5 nF
Suitable for connection to a fieldbus system based on the FISCO model.
Bus cable type A (shielded bus cable):
• Nominal values:
R’ = 24 Ω/km (loop resistance)
C’ = 82 nF/km (capacitance per unit length)
L’ = 623 µH/km (inductance per unit length)
Consideration Condition met?
U
FG eff.
≥ 9 V
10.5 V ≥ 9 V
✓ Yes