3.1.10 Remote housing
The remote cable must be installed separately from the power supply lines
to avoid immunity interferences The minimum bending radius of 2 in. (50
mm) must be observed.
3.1.11 Relay and transistor protection
Provide protection for relay contacts and output transistors to protect the
device against inductive load surges.
3.1.12 Static charging
The Rosemount 2555 must be grounded to avoid a static electrical build-up.
This is particularly important for applications with pneumatic conveying and
non-metallic containers.
3.1.13 Opening the lid
Before opening the lid, ensure no dust deposits, no airborne dusts, and no
hazardous atmosphere are present.
Do not remove the lid (cover) in hazardous areas while circuits are alive.
3.2
Wiring the level switch
Figure 3-1: Connections Overview for Standard Housing
1 1 2 3 4 5 6 7 8
B
C
A
A. Connection terminals
B. Internal Protective Earth (PE) terminal
C. External Protective Earth (PE) terminal
October 2020
Quick Start Guide
Quick Start Guide
17
