Electrical Installation - Emerson Rosemount 6888C Quick Start Manual

October 2019
1.2

Electrical installation

All wiring must conform to local and national codes. Multiple wiring
diagrams are shown in this section. Always refer to the diagrams that apply
to your transmitter configuration and disregard all other wiring diagrams.
WARNING
Electrical shock
Failure to install covers and ground leads could result in serious injury or
death.
Disconnect and lock out power before connecting the power supply.
Install all protective covers and ground leads after installation.
To meet the safety requirements of IEC 61010-1 (EC requirement) and
ensure safe operation of this equipment, connect the main electrical
power supply through a circuit breaker (min 10 A) which will disconnect
all current-carrying conductors during a fault situation.
This circuit breaker should also include a mechanically operated isolating
switch. If it does not, keep another external means of disconnecting the
power supply from the equipment located close by. Circuit breaks or
switches must complay with a recognized standard such as IEC 947.
To maintain proper earth grounding, ensure a positive connection exists
between the transmitter housing and earth. The connecting ground wire
must be 14 AWG minimum.
Line voltage, signal, and relay wiring should be rated for at least 221 °F
(105 °C).
1.2.1 Wire Rosemount
Xi Electronics)
The Rosemount 6888 Transmitter Probe has built-in electronics that control
the heater temperature and amplify the raw O
4-20 mA.
You can run the 4-20 mA signal lines can be run directly to the control room
and also power the transmitter electronics. There is no O
on the probe, so you must set up the transmitter through HART
communications via a Field Communicator or Asset Management Solutions
(AMS).
Procedure
1. Remove the cover from the probe.
2. Connect the line (L1 wire) to the L1 terminal, the neutral (L2 wire) to
the L2/N terminal, and the ground wire to the ground lug.
Quick Start Guide
™
6888 Transmitter Probe only (no Rosemount 6888
Quick Start Guide
millivolt signal to a linear
2
display or keypad
2
®
9