Endress+Hauser Gammapilot FMG50 - Overvoltage Protection (Optional); Rated Cross-Section; Fieldbus Connectors; Pin Assignment for Connector M12-A

Gammapilot FMG50 Electrical connection
Endress+Hauser 31
1
A0038024
1 Ground terminal for connecting the potential matching line
L
CAUTION
‣
Please refer to the separate documentation on applications in hazardous areas for the
safety instructions
For optimum electromagnetic compatibility, the potential matching line should be as
short as possible and at least 2.5 mm
2
(14 AWG) in cross-section.
5.6 Overvoltage protection (optional)
Product structure, feature 610 "Accessory mounted", option "NA"
• Overvoltage protection:
• Nominal functioning DC voltage: 600 V
• Nominal discharge current: 10 kA
• Surge current check î = 20 kA satisfied as per DIN EN 60079-14: 8/20 μs
• Arrester AC current check I = 10 A satisfied
NOTICE
Device could be destroyed!
‣
Devices with integrated overvoltage protection must be grounded.
5.7 Rated cross-section
Protective ground or grounding of the cable shield: rated cross-section > 1 mm
2
(17 AWG)
Rated cross-section of 0.5 mm
2
(AWG20) to 2.5 mm
2
(AWG13)
5.8 Fieldbus connectors
In the case of device versions with a fieldbus connector, the housing does not have to be
opened to establish the connection.
5.8.1 Pin assignment for connector M12-A
2
1
34
A0011175
Pin 1: Signal +
Pin 2: Not used
Pin 3: Signal –
Pin 4: Ground
Material: CuZn, contacts for plug-in jack and connector are gold-plated