Ametek Drexelbrook DR7000 Series Manuale di istruzioni supplementari - Pagina 16
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DR7000 SERIES
CAUTION!
Do not ground the positive connection.
3.6.3 Supply voltage
Current output terminal
1 Minimum voltage at output terminal for a current output of 22 mA
2 Optional. Use a second power supply. This power supply energizes current output terminal 2 only.
3.6.4 Electrical schema
CAUTION!
Make sure that you connect the load resistor to the positive side.
Figure 3-4: Electrical schema for Ex d[ia] / Ex tD[iaD]-approved equipment (with galvanic isolation)
Figure 3-5: Electrical schema for Ex d[ia] / Ex tD[iaD]-approved equipment (without galvanic isolation)
1 Galvanically-isolated power supply (use a second power supply for optional terminal 2)
2 Power supply (use a second power supply for optional terminal 2)
3 Resistor for HART
4 Non-Ex zone
5 Ex zone
6 |U| < 5 V
DR7000-LM IECEX, EDO# 9-10-104, Issue# 1
1 (U
)
S1
2 (U
)
2
S2
®
communication
ELECTRICAL CONNECTIONS
Minimum voltage at output
terminal [VDC]
www.drexelbrook.com
Maximum voltage at output
terminal [VDC]
20
1
10
1
3
36
1
30
1
16