ABB 266 MODBUS User Manual page 37

Electrical guidelines
Since the transmitter has no on-board power switch, it is important to provide a means for disconnecting the power from a
remote source. This helps prevent an accidental electrical short of the power wires while making connections to the transmitter.
NOTICE - Property damage. Residual static electricity may be present in conductive components located inside
the open housing. Avoid leaving the housing cover open to protect against accidental contact. Use appropriate
measures to remove residual static charge before contacting the device. Do not directly touch conductive
components. Touching charged conductive parts can damage electronic components (in some cases beyond
repair) due to electrostatic discharge.
Consider the following during electrical installation:
— The existing supply voltage corresponds to that indicated on the name plate.
— The electrical connection is made via the cable entry 1/2-14 NPT port (optional M20 X 1.5).
— Appropriate conduit or cable glands must be selected for the application.
— The cable gland must be screwed into the housing using a suitable sealing compound to ensure Type 4X and IP 67 degree
of protection for the transmitter.
IMPORTANT NOTES: If cable glands are not used, the red transport screw plugs must be replaced with
suitable plugs when the transmitter is installed. The transport plugs are not EX (Explosion) rated. This
requirement is particularly relevant in hazardous areas.
Installation of the transmitter and associated devices must conform to the requirements of any national, state,
local, and company electrical codes that may apply for the installation type and location.
266 MODBUS® multivariable transmitter User manual 2105216 Rev. AB | 29
3 Installation