• Do ground the aluminum / stainless steel enclosure properly with a PE wire as indicated
to the Protective Earth terminal. It is the responsibility of the installer to install, connect
and test the Protective Earth connections in accordance with the local and (inter)national
Rules and Regulations.
• The installation must comply with (inter)national requirements and local ordinances.
Within the United States all field wiring must conform to the National Electric Code, NFPA
70, Article 501-4(b). Within Canada all field wiring must conform to Section 18-156 of the
Canadian Electrical Code for installations within Canada.
4.5.1 ELECTRICAL SAFETY
Please consult the table with environmental conditions and safety parameters shown at the
beginning of this chapter.
General directions:
• Use (separate) cable glands with effective IP67 / TYPE 4(X) seals for all wires.
• For unused cable entries, fit blind plugs with effective IP67 / TYPE 4(X) seals.
• Make a reliable ground connection to the metal enclosure.
• Use effective screened cable for the input/output signals and provide grounding of its screen to
the “┴ “ terminal (for isolated signals the corresponding – terminal) or at the external device itself,
whichever is appropriate to the application. Be careful not to create ground loops!
• All wiring must be in accordance with local codes and regulations.
• In case this instrument is connected to a supply by means of a permanent connection a switch or
circuit-breaker shall be included in the installation. This shall be in close proximity to the
equipment and within easy reach of the operator. It shall be marked as the disconnecting device
for the equipment. Furthermore, a protective over-current device with a maximum rating of 0.5A
(e.g. fuse or circuit breaker) must be inserted in the positive supply line in safe area.
• The external power supply must be an approved ELV source, insulated from AC mains by double
/ reinforced insulation per CSA C22.2 No. 61010-1 / UL61010-1.
All other inputs and outputs shall at least be reinforced insulated from mains.
• The installation must comply with (inter)national requirements and local ordinances.
Within the United States all field wiring must conform to the National Electric Code, NFPA 70,
Article 501-4(b). Within Canada all field wiring must conform to Section 18-156 of the Canadian
Electrical Code for installations within Canada.
4.5.2 PROTECTIVE EARTH CONNECTIONS
Inside the F103-P, different types of bonding and earthing are used. The common ground is mostly
used for termination of the wire shields and the Protective Earth (PE) is used for electrical safety.
For DC-powered installations, route the Protective Earth (PE) grounding conductor into the
enclosure together with the incoming power conductors.
Risk of damage to equipment!
Be very careful when connecting terminal 00 / GND to Protective Earth (PE).
This terminal is internally connected to the common ground of the system and (especially
when multiple power supplies are connected) the PE connection can cause ground loop
currents that could damage the equipment.
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