Micro Motion 1700, 2700 Operating Manual
Micro Motion® Model 1700 and 2700
Installation Manual
Installation Manual
20001700, Rev CE
May 2015
Safety messages
Safety messages are provided throughout this manual to protect personnel and equipment. Read each safety message carefully
before proceeding to the next step.
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Contents
Contents
Chapter 1 Planning .........................................................................................................................1
1.1 Meter components ...................................................................................................................... 1
1.2 Installation types ..........................................................................................................................1
1.3 Maximum cable lengths between sensor and transmitter ............................................................ 6
1.4 Output options ............................................................................................................................ 7
1.5 Environmental limits .................................................................................................................... 8
1.6 Hazardous area classifications ......................................................................................................8
1.7 Power requirements .................................................................................................................... 8
1.8 Orientation .................................................................................................................................. 9
1.9 Accessibility for maintenance .....................................................................................................10
Chapter 2 Mounting and sensor wiring for integral installations ...................................................11
2.1 Mounting and sensor wiring .......................................................................................................11
2.2 Rotate the transmitter on the sensor (optional) ......................................................................... 11
2.3 Rotate the user interface on the transmitter (optional) .............................................................. 13
2.4 Ground the meter components ................................................................................................. 14
Chapter 3 Mounting and sensor wiring for 4-wire remote installations .........................................16
3.1 Mounting options ...................................................................................................................... 16
3.2 Prepare the 4-wire cable ............................................................................................................ 20
3.3 Wire the transmitter to the sensor ............................................................................................. 23
3.4 Rotate the user interface on the transmitter (optional) .............................................................. 25
3.5 Ground the meter components ................................................................................................. 26
Chapter 4 Mounting and sensor wiring for 9-wire remote installations .........................................28
4.1 Mounting options ...................................................................................................................... 28
4.2 Prepare the 9-wire cable ............................................................................................................ 30
4.3 Wire the transmitter to the sensor using jacketed cable .............................................................36
4.4 Wire the transmitter to the sensor using shielded or armored cable ...........................................39
4.5 Rotate the user interface on the transmitter (optional) .............................................................. 44
4.6 Ground the meter components ................................................................................................. 46
Chapter 5 Mounting and sensor wiring for remote core processor with remote sensor
installations ................................................................................................................. 48
5.1 Mounting options ...................................................................................................................... 48
5.2 Mount the remote core processor ..............................................................................................52
5.3 Prepare the 4-wire cable ............................................................................................................ 53
5.4 Wire the transmitter to the remote core processor .................................................................... 56
5.5 Prepare the 9-wire cable ............................................................................................................ 58
5.6 Wire the remote core processor to the sensor using jacketed cable ........................................... 64
5.7 Wire the remote core processor to the sensor using shielded or armored cable ......................... 67
5.8 Rotate the user interface on the transmitter (optional) .............................................................. 71
5.9 Ground the meter components ................................................................................................. 73
Chapter 6 Wiring the power supply ..............................................................................................76
6.1 Wire the power supply ............................................................................................................... 76
Chapter 7 I/O wiring for Model 1700 and Model 2700 transmitters with analog outputs ...............77
7.1 Basic analog wiring .................................................................................................................... 77
7.2 HART/analog single loop wiring ................................................................................................. 78
Installation Manual i
Contents
7.3 RS-485 point-to-point wiring ..................................................................................................... 79
7.4 HART multidrop wiring .............................................................................................................. 79
Chapter 8 I/O wiring for Model 1700 and Model 2700 transmitters with intrinsically safe
outputs ........................................................................................................................ 81
8.1 Safe area mA output wiring ........................................................................................................81
8.2 Safe area HART/analog single-loop wiring ..................................................................................82
8.3 Safe area HART multidrop wiring ............................................................................................... 83
8.4 Safe area frequency output/discrete output wiring .................................................................... 84
8.5 Hazardous area wiring ............................................................................................................... 84
Chapter 9 I/O wiring for Model 2700 transmitters with configurable input/outputs ......................90
9.1 Channel configuration ............................................................................................................... 90
9.2 mA/HART wiring ........................................................................................................................ 91
9.3 Frequency output wiring ............................................................................................................93
9.4 Discrete output wiring ............................................................................................................... 97
9.5 Discrete input wiring ................................................................................................................101
Chapter 10 I/O wiring for Model 2700 transmitters with Foundation fieldbus or PROFIBUS-PA ......103
10.1 Foundation fieldbus wiring .......................................................................................................103
10.2 PROFIBUS-PA wiring .................................................................................................................104
Chapter 11 Specifications ............................................................................................................. 105
11.1 Electrical connections .............................................................................................................. 105
11.2 Input/output signals ................................................................................................................ 106
11.3 Local display ............................................................................................................................ 110
11.4 Environmental limits ................................................................................................................111
11.5 Physical specifications ..............................................................................................................111
Index ................................................................................................................................................116
ii Micro Motion® Model 1700 and 2700
1 Planning
Topics covered in this chapter:
• Meter components
• Installation types
• Maximum cable lengths between sensor and transmitter
• Output options
• Environmental limits
• Hazardous area classifications
• Power requirements
• Orientation
• Accessibility for maintenance
Planning
1.1 Meter components
The transmitter is one component of a Micro Motion device. The other major component
is the sensor.
A third component, called the core processor, provides additional memory and processing
functions.
1.2 Installation types
The transmitter was ordered and shipped for one of up to eight installation types. The fifth
character of the transmitter model number indicates the installation type.
Installation type indication for Model 1700 and Model 2700 transmittersFigure 1-1:
The model number is located on the device tag on the side of the transmitter.
Installation types for Model 1700 and Model 2700 transmittersTable 1-1:
Model code Description
R Remote mount 4-wire
I Integral
Installation Manual 1
A
B
Planning
Installation types for Model 1700 and Model 2700 transmitters (continued)Table 1-1:
Model code Description
E Remote enhanced core processor (painted aluminum housing) with remote
transmitter
C Remote mount 9-wire (painted aluminum housing)
B Remote core processor with remote transmitter
M Remote mount 4-wire (stainless steel housing)
P Remote mount 9-wire (stainless steel housing)
(1)
H
Remote mount 4-wire (painted aluminum housing) for connecting to Compact Density Meter (CDM), Fork Density Meter (FDM), Fork Viscosity Meter
(FVM)
(1) This option is only available with the Model 2700 FOUNDATION Fieldbus™ transmitter
Integral installation (model code I)Figure 1-2:
The transmitter is mounted directly to the sensor. Integral installations do not require separate transmitter
installation. Power supply and I/O must be field wired to the transmitter.
A. Transmitter
B. Sensor
2 Micro Motion® Model 1700 and 2700
Planning
High-temperature meters with factory connection (model code I)Figure 1-3:
The transmitter is shipped with a flexible connection factory installed between the sensor and the
transmitter. The transmitter must be dismounted from its shipping location (spot-welded to the sensor
case) and then mounted separately. Power supply and I/O must be field wired to the transmitter.
A
B
C
A. Sensor
B. Transmitter or core processor
C. Factory-installed flexible connection
4-wire remote installation for Coriolis meters (model code R or M)Figure 1-4:
The transmitter is installed remotely from the sensor. The 4-wire connection between the sensor and
transmitter must be field wired. Power supply and I/O must be field wired to the transmitter.
A
B
C
D
A
A. Transmitter
B. Field-wired 4-wire connection
C. Core processor
D. Sensor
Installation Manual 3
Planning
Figure 1-5:
4-wire remote installation for density and viscosity meters (CDM, FDM,
or FVM with fieldbus only)(model code H)
The transmitter is installed remotely from the Compact Density Meter (CDM), Fork Density Meter (FDM), or
Fork Viscosity Meter (FVM). The 4-wire connection between the sensor and transmitter must be field wired.
Power supply and I/O must be field wired to the transmitter.
A
B
C
A. Transmitter
B. Field-wired 4-wire connection
C. Meter electronics
4 Micro Motion® Model 1700 and 2700
Planning
9-wire remote installation (model code P)Figure 1-6:
The transmitter and core processor are combined in a single unit that is installed remotely from the sensor.
The 9-wire connection between the transmitter/core processor and the sensor must be field wired. Power
supply and I/O must be field wired to the transmitter.
A
B
C
D
A
A. Transmitter
B. Field-wired 9-wire connection
C. Junction box
D. Sensor
Installation Manual 5
Planning
Figure 1-7:
Remote core processor with remote sensor installation (model code B or
E)
The transmitter, core processor, and sensor are all mounted separately. The 4-wire connection between
the transmitter and core processor must be field wired. The 9-wire connection between the core processor
and the sensor must be field wired. Power supply and I/O must be field wired to the transmitter. This
configuration is sometimes called double-hop.
C
D
A
B
A. Junction box
B. Sensor
C. Transmitter
D. Field-wired 4-wire connection
E. Core processor
F. Field-wired 9-wire connection
E
F
1.3 Maximum cable lengths between sensor and
transmitter
The maximum cable length between the sensor and transmitter that are separately
installed is determined by cable type.
Maximum cable lengths between sensor and transmitterTable 1-2:
Cable type Wire gauge Maximum length
Micro Motion 4-wire Not applicable • 1000 ft (300 m) without Ex-
approval
• 500 ft (150 m) with IIC rat-
ed sensors
• 1000 ft (300 m) with IIB rat-
ed sensors
Micro Motion 9-wire Not applicable 60 ft (20 m)
User-supplied 4-wire VDC 22 AWG (0.35 mm2) 300 ft (90 m)
6 Micro Motion® Model 1700 and 2700
Maximum cable lengths between sensor and transmitter (continued)Table 1-2:
Cable type Wire gauge Maximum length
1.4 Output options
The transmitter was ordered and shipped for one of up to 10 output options. You must
know your transmitter output option to correctly install the transmitter. The eighth
character of the transmitter model number indicates the output option.
Output option indication for Model 1700 and Model 2700 transmittersFigure 1-8:
VDC 20 AWG (0.5 mm2) 500 ft (150 m)
VDC 18 AWG (0.8 mm2) 1000 ft (300 m)
RS-485 22 AWG (0.35 mm2) or
larger
1000 ft (300 m)
Planning
The model number is located on the device tag on the side of the transmitter.
Output options for Model 1700 transmittersTable 1-3:
Letter Description
A Analog outputs – one mA, one frequency, one RS-485
D Intrinsically safe analog outputs – two mA, one frequency
Output options for Model 2700 transmittersTable 1-4:
Letter Description
A Analog outputs – one mA, one frequency, one RS-485
B Configurable I/O channels (default configuration of two mA, one frequency)
C Configurable I/O channels (custom configuration )
D Intrinsically safe analog outputs – two mA, one frequency
E Intrinsically safe Foundation fieldbus H1 with standard function blocks
G PROFIBUS-PA
N Non-incendive Foundation fieldbus H1 with standard function blcoks
2 WirelessHART – one mA, one frequency, one RS-485
Installation Manual 7
Planning
Output options for Model 2700 transmitters (continued)Table 1-4:
Letter Description
3 WirelessHART – one mA, two configurable I/O channels (custom configura-
tion)
4 Intrinsically safe WirelessHART – two mA, one frequency
1.5 Environmental limits
Environmental specificationsTable 1-5:
Type Value
Ambient temperature limits –40 to +140 °F (–40 to +60 °C)
Humidity limits 5 to 95% relative humidity, non-condensing at 140 °F (60 °C)
Vibration limits Meets IEC 60068-2-6, endurance sweep, 5 to 2000 Hz, 50 sweep
cycles at 1.0 g
EMI effects Complies with EMC Directive 2004/108/EC per EN 61326 Indus-
trial
Complies with NAMUR NE-21 (22.08.2007)
Ambient temperature effect on
analog outputs
On mA output: ±0.005% of span per °C
If possible, install the transmitter in a location that will prevent direct exposure to sunlight.
The environmental limits for the transmitter may be further restricted by hazardous area
approvals.
1.6 Hazardous area classifications
If you plan to mount the transmitter in a hazardous area:
• Verify that the transmitter has the appropriate hazardous area approval. Each
transmitter has a hazardous area approval tag attached to the transmitter housing.
• Ensure that any cable used between the transmitter and the sensor meets the
hazardous area requirements.
1.7 Power requirements
Self-switching AC/DC input, automatically recognizes supply voltage
• 85 to 265 VAC, 50/60 Hz, 6 watts typical, 11 watts maximum
• 18 to 100 VDC, 6 watts typical, 11 watts maximum
8 Micro Motion® Model 1700 and 2700
M = 18V + (R × L × 0.5A)
Planning
• Complies with low voltage directive 2006/95/EC per EN 61010-1 (IEC 61010-1) with
amendment 2, and Installation (Overvoltage) Category II, Pollution Degree 2
Note
For DC power:
• Power requirements assume a single transmitter per cable.
• At startup, the power source must provide a minimum of 1.5 amps of short-term current per
transmitter.
• Length and conductor diameter of the power cable must be sized to provide 18 VDC
minimum at the power terminals, at a load current of 0.5 amps.
Cable sizing formulaFigure 1-9:
• M: minimum supply voltage
• R: cable resistance
• L: cable length
Typical power cable resistance at 68 °F (20 °C)Table 1-6:
Wire gauge Resistance
14 AWG 0.0050 Ω/ft
16 AWG 0.0080 Ω/ft
18 AWG 0.0128 Ω/ft
20 AWG 0.0204 Ω/ft
2.5 mm
1.5 mm
1.0 mm
0.75 mm
0.50 mm
2
2
2
2
2
1.8 Orientation
You can mount the transmitter in any orientation as long as the conduit openings do not
point upward.
0.0136 Ω/m
0.0228 Ω/m
0.0340 Ω/m
0.0460 Ω/m
0.0680 Ω/m
Upward-facing conduit openings risk condensation moisture entering the transmitter housing,
which could damage the transmitter.
Installation Manual 9
CAUTION!
Planning
1.9 Accessibility for maintenance
Mount the meter in a location and orientation that satisfies the following conditions:
• Allows sufficient clearance to open the transmitter housing cover. Micro Motion
recommends 8–10 inches (200–250 mm) clearance at the rear of the transmitter.
• Provides clear access for installing cabling to the transmitter.
10 Micro Motion® Model 1700 and 2700
Mounting and sensor wiring for integral installations
2 Mounting and sensor wiring for
integral installations
Topics covered in this chapter:
• Mounting and sensor wiring
• Rotate the transmitter on the sensor (optional)
• Rotate the user interface on the transmitter (optional)
• Ground the meter components
2.1 Mounting and sensor wiring
There are no separate mounting requirements for integral transmitters, and no need to
connect wiring between the transmitter and the sensor.
2.2 Rotate the transmitter on the sensor (optional)
In integral installations, you can rotate the transmitter on the sensor up to 360º in 90º
increments.
Installation Manual 11
A
B
C
D
Mounting and sensor wiring for integral installations
Components of an integral transmitterFigure 2-1:
A. Transmitter
B. Transition ring
C. Cap screws
D. Sensor
Procedure
1. Loosen each of the four cap screws (4 mm) that fasten the transmitter to the base.
2. Rotate the transmitter counter-clockwise so that the cap screws are in the unlocked
position.
3. Gently lift the transmitter straight up, disengaging it from the cap screws.
Important
Do not disconnect or damage the wires that connect the transmitter to the core processor.
4. Rotate the transmitter to the desired orientation.
Important
Do not pinch or stress the wires.
The slots on the transition ring should be aligned with the cap screws.
5. Gently lower the transmitter onto the base, inserting the cap screws into the slots.
6. Rotate the transmitter clockwise so that the cap screws are in the locked position.
7. Tighten the cap screws, torquing to 2.3 to 3.4 N-m.
12 Micro Motion® Model 1700 and 2700
A
B
C
G
E
F
D
Mounting and sensor wiring for integral installations
2.3 Rotate the user interface on the transmitter (optional)
The user interface on the transmitter electronics module can be rotated 90º or 180° from
the original position.
Display componentsFigure 2-2:
A. Transmitter housing
B. Sub-bezel
C. Display module
D. Display screws
E. End-cap clamp
F. Cap screw
G. Display cover
Notes
• When using the touch buttons, you must cover at least an 8 mm diameter circle over the
surface above the touch button: using your thumb may be more effective because it has a
greater surface area.
• When the housing cover is removed, the touch buttons do not function.
Procedure
1. Shut off power to the unit.
2. Remove the end-cap clamp by removing the cap screw.
3. Turn the display cover counterclockwise to remove it from the main enclosure.
4. Carefully loosen (and remove if necessary) the semicaptive display screws while
holding the display module in place.
5. Carefully pull the display module out of the main enclosure until the sub-bezel pin
terminals are disengaged from the display module.
Installation Manual 13
Mounting and sensor wiring for integral installations
Note
If the display pins come out of the board stack with the display module, remove the pins and
reinstall them.
6. Rotate the display module to the desired position.
7. Insert the sub-bezel pin terminals into the display module pin holes to secure the
display in its new position.
8. If you have removed the display screws, line them up with the matching holes on the
sub-bezel, then reinsert and tighten them.
9. Place the display cover onto the main enclosure.
10. Turn the display cover clockwise until it is snug.
11. Replace the end-cap clamp by reinserting and tightening the cap screw.
12. Restore power to the transmitter.
2.4 Ground the meter components
In an integral installation, all components are grounded together.
Prerequisites
If national standards are not in effect, adhere to the following guidelines for grounding:
• Use copper wire, 14 AWG (2.5 mm2) or larger wire size.
• Keep all ground leads as short as possible, less than 1 Ω impedance.
• Connect ground leads directly to earth, or follow plant standards.
Procedure
Ground via the piping, if possible (see sensor documentation). If grounding via the piping
is not possible, ground according to applicable local standards using the transmitter’s
internal or external ground screw.
14 Micro Motion® Model 1700 and 2700
Mounting and sensor wiring for integral installations
Transmitter internal grounding screwFigure 2-3:
Transmitter external grounding screwFigure 2-4:
Installation Manual 15
Mounting and sensor wiring for 4-wire remote installations
3 Mounting and sensor wiring for 4-
wire remote installations
Topics covered in this chapter:
• Mounting options
• Prepare the 4-wire cable
• Wire the transmitter to the sensor
• Rotate the user interface on the transmitter (optional)
• Ground the meter components
3.1 Mounting options
There are two options available for mounting the transmitter:
• Mount the transmitter to a wall or flat surface.
• Mount the transmitter to an instrument pole.
3.1.1 Mount the transmitter to a wall
Prerequisites
• Micro Motion recommends the use of 5/16-18 (8 mm–1.25) fasteners that can
withstand the process environment. Micro Motion does not supply bolts or nuts as
part of the standard offering (general purpose bolts and nuts are available as an
option).
• Ensure that the surface is flat and rigid, does not vibrate, or move excessively.
• Confirm that you have the necessary tools, and the mounting kit shipped with the
transmitter.
Procedure
1. If desired, re-orient the transmitter on the mounting bracket.
a. Remove the junction end-cap from the junction housing.
b. Loosen each of the four cap screws (4 mm).
c. Rotate the bracket so that the transmitter is oriented as desired.
d. Tighten the cap screws, torquing to 30 to 38 in-lbs (3 to 4 N-m).
e. Replace the junction end-cap.
16 Micro Motion® Model 1700 and 2700
B
D
C
A
Mounting and sensor wiring for 4-wire remote installations
Figure 3-1:
Components of 4-wire remote mount transmitter (aluminum
housing)
A. Transmitter
B. Mounting bracket
C. Cap screws
D. End-cap
Installation Manual 17
B
D
C
A
Mounting and sensor wiring for 4-wire remote installations
Figure 3-2:
Components of a 4-wire remote mount transmitter (stainless steel
housing)
A. Transmitter
B. Mounting bracket
C. Cap screws
D. End-cap
2. Attach the mounting bracket to the wall.
3.1.2 Mount the transmitter to an instrument pole
Prerequisites
• Use two 5/16-inch U-bolts for 2-inch pipe, and four matching nuts, that can
withstand the process environment. Micro Motion does not supply U-bolts or nuts
(appropriate bolts and nuts are available as an option).
• Ensure the instrument pole extends at least 12 inches (305 mm) from a rigid base,
and is no more than 2 inches (50.8 mm) in diameter.
18 Micro Motion® Model 1700 and 2700
B
D
C
A
Mounting and sensor wiring for 4-wire remote installations
Procedure
1. If desired, re-orient the transmitter on the mounting bracket.
a. Remove the junction end-cap from the junction housing.
b. Loosen each of the four cap screws (4 mm).
c. Rotate the bracket so that the transmitter is oriented as desired.
d. Tighten the cap screws, torquing to 30 to 38 in-lbs (3 to 4 N-m).
e. Replace the junction end-cap.
Figure 3-3:
Components of 4-wire remote mount transmitter (aluminum
housing)
A. Transmitter
B. Mounting bracket
C. Cap screws
D. End-cap
Installation Manual 19
B
D
C
A
Mounting and sensor wiring for 4-wire remote installations
Figure 3-4:
Components of a 4-wire remote mount transmitter (stainless steel
housing)
A. Transmitter
B. Mounting bracket
C. Cap screws
D. End-cap
2. Attach the mounting bracket to an instrument pole.
3.2 Prepare the 4-wire cable
Important
For user-supplied cable glands, the gland must be capable of terminating the drain wires.
Note
If you are installing unshielded cable in continuous metallic conduit with 360º termination shielding,
you only need to prepare the cable – you do not need to perform the shielding procedure.
20 Micro Motion® Model 1700 and 2700
Mounting and sensor wiring for 4-wire remote installations
4-wire cable preparationFigure 3-5:
Remove the core processor
cover
Cable glands
Micro Motion
cable gland
Pass the wires through the gland nut and clamping insert.
Gland nut
1. Strip 4-1/2 inch (115 mm) of cable jacket.
2. Remove the clear wrap and filler material.
3. Strip all but 3/4 inch (19 mm) of shielding.
Clamping
insert
NPT
Wrap the drain wires twice around the shield and cut off
Gland supplier
Gland type
the excess drain wires.
Cable layout
through the gland.
Terminate the drain
wires inside the
M20
1. Strip 4-1/4 inch (108 mm) of cable jacket.
2. Remove the clear wrap and filler material.
3. Strip all but 1/2 inch (12 mm) of shielding.
User-supplied
cable gland
Pass the wires
gland.
Metal conduit
Run conduit to
sensor
Lay cable in conduit
Done
(do not perform the
shielding procedure)
Drain wires
wrapped around
shield
Go to the shielding
procedure
Installation Manual 21
Mounting and sensor wiring for 4-wire remote installations
4-wire cable shieldingFigure 3-6:
From the preparation
procedure
Micro Motion
cable gland
Braided
(armored cable)
Apply the Heat Shrink
1. Slide the shielded heat shrink over the drain wires. Ensure that the
wires are completely covered.
2. Apply heat (250 °F or 120 °C) to shrink the tubing. Do not burn the
cable.
3. Position the clamping insert so the interior end is flush with the braid
of the heat shrink.
Assemble the Gland
1. Fold the shield or braid back over the clamping insert and 1/8 inch
(3 mm) past the O-ring.
2. Install the gland body into the conduit opening on the core processor housing.
3. Insert the wires through gland body and tighten the gland nut onto the gland body.
Cable shield
type
Shielded heat
shrink
Foil
(shielded cable)
NPT
Gland supplier
Gland type M20
After heat applied
User-supplied
cable gland
Trim 7 mm from the shielded
heat shrink
Trim
Terminate the shield
and drain wires in the
Assemble the gland
according to vendor
gland
instructions
Shield folded back
Done
Gland body
3.2.1 4-wire cable types and usage
Micro Motion offers two types of 4-wire cable: shielded and armored. Both types contain
shield drain wires.
The 4-wire cable supplied by Micro Motion consists of one pair of red and black 18 AWG
(0.75 mm2) wires for the VDC connection, and one pair of white and green 22 AWG
(0.35 mm2) wires for the RS-485 connection.
22 Micro Motion® Model 1700 and 2700
Mounting and sensor wiring for 4-wire remote installations
User-supplied 4-wire cable must meet the following requirements:
• Twisted pair construction.
• Applicable hazardous area requirements, if the core processor is installed in a
hazardous area.
• Wire gauge appropriate for the cable length between the core processor and the
transmitter.
Wire gaugeTable 3-1:
Wire gauge Maximum cable length
VDC 22 AWG (0.35 mm2) 300 ft (90 m)
VDC 20 AWG (0.5 mm2) 500 ft (150 m)
VDC 18 AWG (0.8 mm2) 1000 ft (300 m)
RS-485 22 AWG (0.35 mm2) or larger 1000 ft (300 m)
3.3 Wire the transmitter to the sensor
1. Connect the cable to the sensor-mounted core processor as described in the sensor
documentation.
2. Feed the wires from the sensor through the conduit opening on the transmitter.
3. Connect wires to the appropriate terminals on the mating connector.
Tip
You may find it easier to unplug the mating connector to connect the wires. If you do so,
remember to firmly reseat the mating connector and tighten the mating connector screws so
that the mating connector cannot accidentally come loose.
Installation Manual 23
Mounting and sensor wiring for 4-wire remote installations
Wiring path for transmitters with aluminum housingFigure 3-7:
A. 4-wire cable
B. Transmitter conduit opening
C. Mating connector
A
B
C
VDC+
VDC –
RS-485A
RS-485B
Wiring path for transmitters with stainless steel housingFigure 3-8:
A. 4-wire cable
B. Transmitter conduit opening
C. Mating connector
A
B
C
VDC+
VDC –
RS-485A
RS-485B
24 Micro Motion® Model 1700 and 2700
A
B
C
G
E
F
D
Mounting and sensor wiring for 4-wire remote installations
3.4 Rotate the user interface on the transmitter (optional)
The user interface on the transmitter electronics module can be rotated 90º or 180° from
the original position.
Display componentsFigure 3-9:
A. Transmitter housing
B. Sub-bezel
C. Display module
D. Display screws
E. End-cap clamp
F. Cap screw
G. Display cover
Procedure
1. Shut off power to the unit.
2. Remove the end-cap clamp by removing the cap screw.
3. Turn the display cover counterclockwise to remove it from the main enclosure.
4. Carefully loosen (and remove if necessary) the semicaptive display screws while
holding the display module in place.
5. Carefully pull the display module out of the main enclosure until the sub-bezel pin
terminals are disengaged from the display module.
Note
If the display pins come out of the board stack with the display module, remove the pins and
reinstall them.
6. Rotate the display module to the desired position.
Installation Manual 25
Mounting and sensor wiring for 4-wire remote installations
7. Insert the sub-bezel pin terminals into the display module pin holes to secure the
display in its new position.
8. If you have removed the display screws, line them up with the matching holes on the
sub-bezel, then reinsert and tighten them.
9. Place the display cover onto the main enclosure.
10. Turn the display cover clockwise until it is snug.
11. Replace the end-cap clamp by reinserting and tightening the cap screw.
12. Restore power to the transmitter.
3.5 Ground the meter components
In 4-wire remote installations, the transmitter and sensor are grounded separately.
Prerequisites
CAUTION!
Improper grounding could cause inaccurate measurements or meter failure.
Note
For hazardous area installations in Europe, refer to standard EN 60079-14 or national standards.
If national standards are not in effect, adhere to the following guidelines for grounding:
• Use copper wire, 14 AWG (2.5 mm2) or larger wire size.
• Keep all ground leads as short as possible, less than 1 Ω impedance.
• Connect ground leads directly to earth, or follow plant standards.
Procedure
1. Ground the sensor according to the instructions in the sensor documentation.
2. Ground the transmitter according to applicable local standards, using the
transmitter’s internal or external ground screw.
26 Micro Motion® Model 1700 and 2700
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