Deltabar PMD75B PROFINET with Ethernet-APL Electrical connection
Endress+Hauser 25
6 Electrical connection
6.1 Connecting requirements
6.1.1 Potential equalization
The protective ground on the device must not be connected. If necessary, the potential
matching line can be connected to the outer ground terminal of the device before the
device is connected.
A0045412
1 Ground terminal for connecting the potential matching line
L
WARNING
Explosion Hazard!
‣
Please refer to the separate documentation on applications in hazardous areas for the
safety instructions.
For optimum electromagnetic compatibility:
• Keep the potential matching line as short as possible
• Maintain a cross-section of at least 2.5 mm
2
(14 AWG)
6.2 Connecting the device
A0043806
1 Connection compartment cover
Housing thread
The threads of the electronics and connection compartment can be coated with an
anti-friction coating.
The following applies for all housing materials:
Do not lubricate the housing threads.
6.2.1 Supply voltage
APL power class A (9.6 to 15 V
DC
540 mW)
The APL field switch must be tested to ensure it meets safety requirements (e.g.,
PELV, SELV, Class 2) and must comply with the relevant protocol specifications.
6.2.2 Terminals
• Supply voltage and internal ground terminal: 0.5 to 2.5 mm
2
(20 to 14 AWG)
• External ground terminal: 0.5 to 4 mm
2
(20 to 12 AWG)
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