Rosemount 6888Xi, Reference Manual, Page: 23 / 114

Installation 15
Reference Manual Section 2: Installation
00809-0100-4892 January 2019
2.3 Electrical Installation
Rosemount 6888Xi Advanced Electronics
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.
NOTE
Line voltage, signal, and relay wiring must be rated for at least 105 °C (221 °F).
NOTE
If metal conduit is used with the 6888Xi the conduit should be reliably bonded to protective
earth. The grounding plate inside the 6888Xi is not bonded to PE and does not provide adequate
grounding.
1. Remove cover screws from the front cover of the 6888Xi. Swing down the front cover of the
interface box.
2. Pull out the I/O board on the right-hand side of the card rack inside the 6888Xi. If your sys-
tem is configured to operate two transmitter probes there are two I/O interface boards.
3. See Figures 2-5, 2-6 and 2-7. Connect the 4-20 mA signal wires at J4 of the I/O board. Attach
the supplied ferrite clamp over the 4-20 mA OUT wires that extend past the shield.
NOTE
Installation of the ferrite clamp over the 4-20 mA OUT wires is required for compliance with the
European EMC Directive.
4. Terminate the shield of the 4-20 mA signal wires at the designated ground terminal of the
6888Xi. Do not allow bare shield wires to contact the circuit boards. Insulate the shield wires
prior to termination.
5. Connect the signal wires from the SPS or IMPS (if used) to the applicable terminals of J3.
Refer to the SPS or IMPS instruction manual for wiring details.
WARNING
Disconnect and lock out power before connecting the power supply.
WARNING
Install all protective covers and safety ground leads after installation. Failure to install covers and ground
leads could result in serious injury or death.
WARNING
To meet the Safety Requirements of IEC 61010 (EC requirement), and ensure safe operation of this equip-
ment, connection to the main electrical power supply must be made through a circuit breaker (min 10A)
which will disconnect all current-carrying conductors during a fault situation. This circuit breaker should
also include a mechanically operated isolating switch. If not, then another external means of disconnecting
the supply from the equipment should be located close by. Circuit breakers or switches must comply with a
recognized standard such as IEC 947.