Emerson Micro Motion 2400S User manual

Installation Manual
20003402, Rev. DA
January 2021
Micro Motion
TM
Model 2400S Transmitters
Installation Manual

Safety and approval information
This Micro Motion product complies with all applicable European directives when properly installed in accordance with the
instructions in this manual. Refer to the EC declaration of conformity for directives that apply to this product. The EC declaration of
conformity, with all applicable European directives, and the complete ATEX Installation Drawings and Instructions are available on
the internet at www.emerson.com/flowmeasurement or through your local Micro Motion support center.
Information affixed to equipment that complies with the Pressure Equipment Directive can be found on the internet at
www.emerson.com/flowmeasurement .
For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.
Other information
Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the transmitter
configuration manual. Product data sheets and manuals are available from the Micro Motion web site at www.emerson.com/
flowmeasurement .
Return policy
Micro Motion procedures must be followed when returning equipment. These procedures ensure legal compliance with government
transportation agencies and help provide a safe working environment for Micro Motion employees. Failure to follow Micro Motion
procedures will result in your equipment being refused delivery.
Information on return procedures and forms is available on our web support system at www.emerson.com/flowmeasurement , or by
phoning the Micro Motion Customer Service department.
Micro Motion customer service
Email:
•Worldwide: [email protected]
•Asia-Pacific: [e-mail]
Telephone:
North and South America Europe and Middle East Asia Pacific
United States 800-522-6277 U.K. and Ireland 0870 240 1978 Australia 800 158 727
Canada [phone] The Netherlands [phone] New Zealand 099 128 804
Mexico [phone] France [phone] India 800 440 1468
Argentina [phone] Germany 0800 182 5347 Pakistan 888 550 2682
Brazil [phone] Italy [phone] China [phone]
Chile [phone] Central & Eastern [phone] Japan [phone]
Peru [phone] Russia/CIS [phone] South Korea [phone]
Egypt 0800 000 0015 Singapore [phone]
Oman 800 70101 Thailand 001 800 441 6426
Qatar 431 0044 Malaysia 800 814 008
Kuwait 663 299 01
South Africa 800 991 390
Saudi Arabia 800 844 9564
UAE 800 0444 0684

Installation Manual 3
Contents
Chapter 1 Before you begin .......................................................................................................... 5
1.1 Safety .................................................................................................................................... 5
1.2 Flowmeter components.........................................................................................................5
1.3 Transmitter installation overview........................................................................................... 6
1.4 Flowmeter documentation .................................................................................................... 7
Chapter 2 Transmitter orientation and power supply ................................................................... 9
2.1 Moisture protection ............................................................................................................... 9
2.2 Rotating the transmitter on the sensor (optional) ................................................................. 9
2.3 Rotating the user interface module on the transmitter (optional) ......................................... 10
2.4 Power supply requirements ................................................................................................... 12
2.5 DC power requirements for Model 2400S Analog and PROFIBUS-DP transmitters.................. 12
2.6 Wire the power supply ........................................................................................................... 13
Chapter 3 Analog transmitter I/O wiring ...................................................................................... 15
3.1 Moisture protection ............................................................................................................... 15
3.2 I/O options............................................................................................................................. 15
3.3 Wire the outputs.................................................................................................................... 16
Chapter 4 I/O wiring for Model 2400S PROFIBUS-DP and DeviceNet transmitters.......................... 27
4.1 Moisture protection ............................................................................................................... 27
4.2 I/O wiring for Model 2400S PROFIBUS-DP transmitters .......................................................... 27
4.3 I/O wiring for Model 2400S DeviceNet transmitters ............................................................... 29
Appendix A Dimensions and specifications...................................................................................... 31
A.1 Dimensions............................................................................................................................ 31
A.2 Physical specifications............................................................................................................ 33
A.3 Power supply for Models 2400S Analog and PROFIBUS-DP..................................................... 33
A.4 Electrical connections ............................................................................................................ 34
A.5 User interface......................................................................................................................... 35
A.6 Input/output signals .............................................................................................................. 37
A.7 Digital communications......................................................................................................... 38
A.8 Host interface ........................................................................................................................ 38
A.9 Environmental limits .............................................................................................................. 39
A.10 Environmental effects ............................................................................................................ 39
A.11 Hazardous area classifications................................................................................................ 39
Appendix B Return Policy................................................................................................................ 41
B.1 New and unused equipment .................................................................................................. 41
B.2 Used equipment .................................................................................................................... 41

4Model 2400S Transmitters

Installation Manual 5
Before you begin
1 Before you begin
This manual describes the procedures required to install the following transmitters:
•Model 2400S transmitter with analog outputs
•Model 2400S transmitter with PROFIBUS-DP
•Model 2400S transmitter with DeviceNet
TM
1.1 Safety
Read each safety message in this document carefully before proceeding to the next step.
1.2 Flowmeter components
The Model 2400S transmitter is mounted on a Micro Motion sensor. The transmitter and
sensor together comprise the Micro Motion flowmeter.
Figure 1-1 provides a view of the Model 2400S transmitter mounted on a sensor.
WARNING!
Improper installation in a hazardous area can cause an explosion. For information about
hazardous applications, refer to the appropriate Micro Motion approval documentation,
shipped with the meter or available from the Micro Motion web site.
CAUTION!
Shut off power before installing the transmitter. Excess voltage can damage the transmitter.
CAUTION!
Follow all instructions. Improper installation could cause measurement error or flowmeter
failure.

6Model 2400S Transmitters
Before you begin
Figure 1-1 Model 2400S transmitter
1.3 Transmitter installation overview
The Model 2400S transmitter component is mounted integrally with the sensor and
grounded via the sensor. To install and ground the sensor, see the sensor documentation.
Additional transmitter installation steps are documented in this manual:
•Rotate the transmitter on the sensor (optional)
See Section 2.
•Rotate the user interface module on the transmitter (optional)
See Section 2.
•Wire and ground the transmitter’s power supply
See Section 2.
•Wire the transmitter I/O:
- For the Model 2400S Analog transmitter, see Section 3
- For the Model 2400S PROFIBUS-DP and DeviceNet transmitters, see Section 4
Transmitter housing cover
Conduit openings
Clamping ring
Sensor case

Installation Manual 7
Before you begin
1.4 Flowmeter documentation
Table 1-1 Flowmeter documentation resources
Topic Document
Sensor installation Sensor documentation shipped with the sensor
Hazardous area installation See the approval documentation shipped with the transmitter, or
download the appropriate documentation from the Micro Motion
web site at www.emerson.com/flowmeasurement .
Transmitter configuration,
flowmeter startup and use, and
flowmeter troubleshooting
 Micro Motion Model 2400S Transmitters with Analog Outputs:
Configuration and Use Manual
 Micro Motion Model 2400S Transmitters with PROFIBUS-DP:
Configuration and Use Manual
 Micro Motion Model 2400S Transmitters with DeviceNet:
Configuration and Use Manual

8Model 2400S Transmitters
Before you begin

Installation Manual 9
Transmitter orientation and power supply
2 Transmitter orientation and power
supply
This section describes:
•Rotating the transmitter on the sensor (optional)
•Rotating the user interface module on the transmitter (optional)
•Power supply requirements and wiring
2.1 Moisture protection
When rotating or wiring the transmitter, guard against condensation or excessive moisture
inside the transmitter housing. Be sure that the conduit openings are completely sealed
after you perform all installation and wiring procedures.
2.2 Rotating the transmitter on the sensor
(optional)
For easier access to the user interface or the wiring terminals, the transmitter can be
rotated on the sensor in 45° increments, for eight different orientations.
To rotate the transmitter on the sensor:
1. Unscrew the clamp that holds the transmitter to the feedthrough.
See Figure 2-1.
2. Gently lift the transmitter on the feedthrough until it disengages from the notches on
the feedthrough. You will not be able to remove the transmitter completely.
3. Rotate the transmitter to the desired position.
4. Lower the transmitter, sliding it onto the notches on the feedthrough.
5. Replace the clamp and tighten the screw.
CAUTION!
Improperly sealed housings can expose electronics to moisture, which can cause measurement error
or flowmeter failure. Install the meter so that the conduit openings do not point upward, and install
drip legs in conduit or cable. Inspect and grease all gaskets and O-rings. Fully close and tighten all
housing covers and conduit openings.

10 Model 2400S Transmitters
Transmitter orientation and power supply
Figure 2-1 Rotating the transmitter on the sensor
2.3 Rotating the user interface module on the
transmitter (optional)
For easier access, you can rotate the user interface module (whether or not the transmitter
has an LCD display) up to 360° in 90° increments.
To rotate the user interface module on the transmitter:
1. Remove power from the unit.
CAUTION!
Do not rotate the housing more than 360°. Excessive rotation can damage the wiring and
cause measurement error or flowmeter failure.
WARNING!
Shut off power to the transmitter before you remove the housing cover in a hazardous area, as this
could cause an explosion.
Feedthrough
Clamping ring
Feedthrough
notches

Installation Manual 11
Transmitter orientation and power supply
2. Remove the transmitter housing cover and user interface module using the following
steps (see Figure 2-2).
a. Loosen the four transmitter housing cover screws.
b. Remove the transmitter housing cover.
c. Loosen the 2 user interface screws.
d. Gently lift the user interface module, disengaging it from the user interface
connector on the transmitter.
3. Rotate the user interface module to the desired position and plug it into the user
interface connector on the transmitter.
Four user interface connectors are located on the back of the user interface module.
See Figure 2-3 for another view of the user interface connector on the transmitter.
4. Tighten the user interface screws.
5. Replace the transmitter housing cover and tighten the transmitter housing cover
screws.
6. Restore power to the transmitter if required.
Figure 2-2 Rotating the user interface module on the transmitter
4 x Transmitter housing
cover screws (captive)
2 x User interface
screws (captive)
Transmitter housing
cover
User interface module
*Transmitter with aluminum housing shown. Procedure
for stainless steel housing is similar.

12 Model 2400S Transmitters
Transmitter orientation and power supply
2.4 Power supply requirements
Model 2400S Analog and Model 2400S PROFIBUS-DP transmitters can accept either AC or
DC power. The transmitter automatically recognizes the source voltage. Power supply
requirements are:
•AC power:
- 85–265 VAC
-50/60Hz
- 4 watts typical, 7 watts maximum
•DC power:
- 18–100 VDC
- 4 watts typical, 7 watts maximum
The Model 2400S DeviceNet transmitter is powered from the DeviceNet network per the
DeviceNet specification. There is no need to connect separate power-supply wiring for the
Model 2400S DeviceNet transmitter. Skip to Section 4.
2.5 DC power requirements for Model 2400S
Analog and PROFIBUS-DP transmitters
If you are using DC power with a Model 2400S Analog or PROFIBUS-DP transmitter, the
following requirements apply:
•At startup, the transmitter power source must provide a minimum of 1 A 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 A. (This assumes a single
transmitter per cable. Connecting multiple transmitters to a single cable should
generally be avoided.) To size the cable, see Table 2-1 and use the following formula as
a guideline:
Table 2-1 Typical power cable resistances at 68 °F (20 °C)
Gauge Resistance
(1)
(1) These values include the resistance of both high and low conductors in a cable.
14 AWG 0.0050 W/foot
16 AWG 0.0080 Ω/foot
18 AWG 0.0128 Ω/foot
20 AWG 0.0204 Ω/foot
2,5 mm
2
0,0136 Ω/meter
1,5 mm
2
0,0228 Ω/meter
1 mm
2
0,0340 Ω/meter
0,75 mm
2
0,0460 Ω/meter
0,5 mm
2
0,0680 W/meter
MinimumSupplyVoltage 18V CableResistance CableLength×0.5A×()+=

Installation Manual 13
Transmitter orientation and power supply
Example
The transmitter is mounted 350 feet from a DC power supply. If you want to use 16 AWG cable, calculate
the required voltage at the DC power supply as follows
:
2.6 Wire the power supply
To wire the power supply:
1. Remove the transmitter housing cover and user interface module as described in
Section 2.3.
2. Unscrew the warning flap screw and raise the warning flap.
Figure 2-3 shows the warning flap in the open position.
3. Connect the power supply wires to terminals 9 and 10, as shown in Figure 2-3.
4. Ground the power supply to the transmitter’s internal grounding screw, shown in
Figure 2-3.
5. Lower the warning flap and tighten the warning flap screw.
6. (Optional). Install a user-supplied switch in the power supply line. For compliance with
low-voltage directive 2006/95/EC (European installations), a switch in close proximity
to the transmitter is required.
MinimumSupplyVoltage 18V 0.0080 Ohms/ft 350 ft×0.5A×()+=
MinimumSupplyVoltage 19.4V=
MinimumSupplyVoltage 18V CableResistance CableLength×0.5A×()+=

14 Model 2400S Transmitters
Transmitter orientation and power supply
Figure 2-3 Wiring the transmitter power supply
+ (L)
– (N)
Transmitter internal
grounding screw
User interface connector Warning flap screw
Warning flap
Model 2400S Analog transmitter
+ (L)
– (N)
Transmitter internal
grounding screw
User interface connector
Warning flap screw
Warning flap
Model 2400S PROFIBUS-DP transmitter

Installation Manual 15
Analog transmitter I/O wiring
3 Analog transmitter I/O wiring
This section describes how to wire I/O for Model 2400S Analog transmitters.
Note:
To wire I/O for Model 2400S PROFIBUS-DP and DeviceNet transmitters, see Section 4.
Important:
Follow all corporate, local, and national safety requirements and electrical codes.
3.1 Moisture protection
When rotating or wiring the transmitter, guard against condensation or excessive moisture
inside the transmitter housing. Be sure that the conduit openings are completely sealed
after completing all installation and wiring procedures.
3.2 I/O options
Table 3-1 lists the options for the transmitter’s 2 I/O channels. Before wiring Channel B,
ensure that you know how it will be configured. For information on configuring Channel B
for function and power, see the Micro Motion Model 2400S Transmitters with Analog Outputs:
Configuration and Use Manual.
CAUTION!
Improperly sealed housings can expose electronics to moisture, which can cause measurement error
or flowmeter failure. Install the meter so that the conduit openings do not point upward, and install
drip legs in conduit or cable. Inspect and grease all gaskets and O-rings. Fully close and tighten all
housing covers and conduit openings.
Table 3-1 Terminal configuration options
Channel Terminals Function Power Comm
A 1 & 2 mA Internal
(1)
or
external
(1) Factory default
HART/Bell 202
B3&4Frequency
(1)
Internal
(1)
or
external None
Discrete output Internal or
external None
Discrete input Internal or
external None

16 Model 2400S Transmitters
Analog transmitter I/O wiring
3.3 Wire the outputs
To wire the outputs:
1. Remove the transmitter housing cover and user interface module. See Section 2.3.
2. Wire the outputs according to the appropriate wiring diagram:
•For mA output wiring diagrams, see Section 3.3.1.
•For frequency output wiring diagrams, see Section 3.3.2.
•For discrete output wiring diagrams, see Section 3.3.3.
•For a discrete input wiring diagram, see Section 3.3.4.
3. Replace the user interface module and transmitter housing cover.
Note:
Do not open the power compartment unless you are also wiring the power supply.
3.3.1 mA output wiring
The wiring diagrams in this section are examples of proper wiring for the Model 2400S mA
output with the following options:
•Internal power:
- Basic mA output wiring – Figure 3-1
- HART/analog single-loop wiring – Figure 3-2
•External power:
- Basic mA output wiring – Figure 3-3
- HART/analog single-loop wiring – Figure 3-4
•HART multidrop wiring, internal or external power – Figure 3-6
Note:
If you plan to configure the transmitter to poll an external temperature or pressure device, you must wire the mA output to
support HART communications. You can use either HART/analog single-loop wiring or HART multidrop wiring.
WARNING!
Improper installation in a hazardous area can cause an explosion. For information about
hazardous applications, refer to the appropriate Micro Motion approval documentation,
shipped with the meter or available from the Micro Motion web site.
CAUTION!
Shut off power before installing the transmitter. Excess voltage can damage the transmitter.

Installation Manual 17
Analog transmitter I/O wiring
Figure 3-1 Basic mA output wiring with internal power
Figure 3-2 HART/analog single-loop wiring with internal power
For analog communications: 820 Ohm maximum loop resistance
For HART communications:
•600 Ohm maximum loop resistance
•250 Ohm minimum loop resistance
820 Ohm maximum
loop resistance
+
–
HART-compatible
host or controller
–
+

18 Model 2400S Transmitters
Analog transmitter I/O wiring
Figure 3-3 Basic mA output wiring with external power
Note:
See Figure 3-5 for voltage and resistance values.
CAUTION!
Do not exceed 30 VDC input. Terminal current must be less than 500 mA. Excessive current will
damage the transmitter.
VDC
R
load
–
+
+
–

Installation Manual 19
Analog transmitter I/O wiring
Figure 3-4 HART/analog single-loop wiring for external power
Note:
See Figure 3-5 for voltage and resistance values.
Figure 3-5 Required external voltage versus mA load resistance
VDC
R
load
(250–600 Ohm resistance)
–
+
+
HART-
compatible host or
controller
–
0
4
8
12
16
20
24
28
30
0 200 400 600 800 1000 1200
If communicating with HART, a minimum of 250 Ohms is required.
Total mA load resistance (Ohms)
Minimum required external voltage (Volts)
OPERATING REGION

20 Model 2400S Transmitters
Analog transmitter I/O wiring
Figure 3-6 HART multidrop wiring for internal or external power
Note:
For optimum HART communication, make sure the output loop is single-point-grounded to an instrument-grade ground.
3.3.2 Frequency output wiring
Frequency output wiring depends on whether you will use internal or external power. The
following diagrams are examples of proper wiring for these configurations:
•Internal power – Figure 3-7
•External power – Figure 3-8
HART-compatible
host or controller
HART-compatible
transmitter SMART FAMILY™
transmitter
24 VDC loop power
supply required for HART
4–20 mA passive
transmitters
600 Ohm maximum resistance
250 Ohm minimum resistance
Model 2400S
External power
Model 2400S
Internal power