Wiring Diagrams - Emerson Rosemount 3051S Reference Manual

Rosemount 3051S ERS System
Warnings
Setting the Loop to
Manual

WIRING DIAGRAMS

3-2
Failure to follow these installation guidelines could result in death or serious injury:
• Make sure only qualified personnel perform the installation
Explosions could result in death or serious injury:
• Do not remove the transmitter covers in explosive atmospheres when the circuit is live.
• Before connecting a Field Communicator in an explosive atmosphere, make sure the
instruments in the loop are installed in accordance with intrinsically safe or non-incendive
field wiring practices.
• Both transmitter covers must be fully engaged to meet flameproof / explosion-proof
requirements.
• Verify that the operating atmosphere of the transmitter is consistent with the appropriate
hazardous location certifications.
Electrical shock could cause death or serious injury. If the ERS system is installed in a high-voltage
environment and a fault or installation error occurs, high voltage may be present on the transmitter
leads and terminals:
• Use extreme caution when making contact with the leads and terminals.
Process leaks could result in death or serious injury:
• Install and tighten all four flange bolts before applying pressure.
• Do not attempt to loosen or remove flange bolts while the transmitter is in service.
• Replacement equipment or spare parts not approved by Emerson Process Management
for use as spare parts could reduce the pressure retaining capabilities of the transmitter
and may render the instrument dangerous.
• Use only bolts supplied or sold by Emerson Process Management as spare parts.
Improper assembly of manifolds to traditional flange can damage the device:
• For the safe assembly of the manifold to the transmitter flange, bolts must break the back
plane of the flange web (i.e. bolt hole) but must not contact the sensor module.
Static electricity can damage sensitive components:
•
Observe safe handling precautions for static-sensitive components.
Whenever sending or requesting data that would disrupt the loop or change
the output of the transmitter, set the process application loop to manual. The
Field Communicator or AMS will prompt you to set the loop to manual when
necessary. Acknowledging this prompt does not set the loop to manual. The
prompt is only a reminder; set the loop to manual as a separate operation.
Connect a Field Communicator or AMS using a wiring configuration as shown
in Figure 2-9, Figure 2-10, or Figure 2-11. The Field Communicator or AMS
may be connected at "PWR / COMM" on the terminal block of the ERS
primary transmitter, across the load resistor, or at any termination point in the
signal loop.
The Field Communicator or AMS will search for a HART-compatible device
and indicate when the connection is made. If the Field Communicator or AMS
fail to connect, it indicates that no device was found. If this occurs, refer to
Section 5: Troubleshooting.
Reference Manual
00809-0100-4804, Rev AA
January 2011