4 Start-up
X-AI 32 51
Page 46 of 58
HI 801 181 E Rev. 4.00
4.4.4 Ex-Protection
with Zener Barriers
Zener barriers can be used for EX-protection, e.g., barriers of MTL, Type 7787+ or
Fuchs, Type Z787.
Connector Board
X-AI 32 51
AI-
S-
S+
AI+
1
2
3
Barriers
Transmitter Supply
Analog Input
Figure 19:
Single-Channel Transmitter Connection with Barrier
4.4.5 EX-Protection
with
Repeater Power Supply
Analog power supply isolators such as the H 6200A from HIMA can be implemented for
EX-protection. The module's transmitter supply is not used when a power supply isolator is
wired.
Connector Board
AI-
S-
AI+
X-AI 32 51
1
S+
2
3
Analog Repeater Power Supply
Transmitter Supply
Analog Input
Figure 20:
Single-Channel Wiring of One Analog Power Supply Isolator
Summary of Contents for X-AI 32 51
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