Micro Motion 2400S Operating Manual

Installation Manual

P/N 20003402, Rev. D
April 2008

Micro Motion

®

Model 2400S Transmitters

Installation Manual

©2008, Micro Motion, Inc. All rights reserved. ELITE and ProLink are registered trademarks, and MVD and MVD Direct Connect
are trademarks of Micro Motion, Inc., Boulder, Colorado. Micro Motion is a registered trade name of Micro Motion, Inc., Boulder,
Colorado. The Micro Motion and Emerson logos are trademarks and service marks of Emerson Electric Co. All other trademarks
are property of their respective owners.

Contents

Chapter 1 Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3 Flowmeter components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.4 Transmitter installation overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.5 Flowmeter documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.6 Customer service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 2 Transmitter Orientation and Power Supply . . . . . . . . . . . . . . . . . . . . 5

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Moisture protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Rotating the transmitter on the sensor (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4 Rotating the user interface module on the transmitter (optional) . . . . . . . . . . . . . . . . 6

2.5 Power supply requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5.1 DC power requirements for Model 2400S Analog and

PROFIBUS-DP transmitters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.6 Wiring the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 3 I/O Wiring – Model 2400S Analog Transmitters. . . . . . . . . . . . . . . . 11

3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2 Moisture protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.3 I/O options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.4 Wiring the outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.4.1 mA output wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.4.2 Frequency output wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.4.3 Discrete output wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.4.4 Discrete input wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Chapter 4 I/O Wiring – Model 2400S PROFIBUS-DP and DeviceNet Transmitters 21

4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.2 Moisture protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.3 I/O wiring for Model 2400S PROFIBUS-DP transmitters . . . . . . . . . . . . . . . . . . . . . 21

4.3.1 Enabling internal termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.4 I/O wiring for Model 2400S DeviceNet transmitters . . . . . . . . . . . . . . . . . . . . . . . . . 23

Installation Manual iii

Contents

Appendix A Dimensions and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 25

A.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

A.2 Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

A.3 Power supply – Models 2400S Analog and PROFIBUS-DP. . . . . . . . . . . . . . . . . . . 27

A.4 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

A.5 User interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

A.6 Input/output signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

A.7 Digital communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

A.8 Host interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

A.9 Environmental limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

A.10 Environmental effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

A.11 Hazardous area classifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Appendix B Return Policy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

B.1 New and unused equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

B.2 Used equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

iv Micro Motion® Model 2400S Transmitters

Chapter 1

Before You Begin

1.1 Overview

This chapter provides an orientation to the use of this manual. 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

1.2 Safety

Safety messages are provided throughout this manual to protect personnel and equipment. Read each
safety message carefully before proceeding to the next step.

™

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Improper installation in a hazardous area can cause an explosion. When installing in a hazardous area,
refer to Micro Motion approvals instructions, shipped with the product or available from the Micro
Motion web site.

Hazardous voltage can cause severe injury or death. Make sure power is shut off before installing the
transmitter.

Follow all instructions. Improper installation could cause measurement error or flowmeter failure.

1.3 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.

Installation Manual 1

Before You Begin

Transmitter housing cover

Conduit openings

Clamping ring

Sensor case

Figure 1-1 Model 2400S transmitter

1.4 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 Chapter 2

• Rotate the user interface module on the transmitter (optional) – see Chapter 2

• Wire and ground the transmitter’s power supply – see Chapter 2

• Wire the transmitter I/O:

- For the Model 2400S Analog transmitter, see Chapter 3

- For the Model 2400S PROFIBUS-DP and DeviceNet transmitters, see Chapter 4

1.5 Flowmeter documentation

Table 1-1 lists documentation sources for other required information.

Table 1-1 Flowmeter documentation resources

Topic Document

Sensor installation Sensor documentation shipped with sensor

Hazardous area installation See the approval documentation shipped with the

Transmitter configuration,
flowmeter startup and use, and
flowmeter troubleshooting

transmitter, or download the appropriate
documentation from the Micro Motion web site
(www.micromotion.com)

• 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
DeviceNet

®

Model 2400S Transmitters with

™

: Configuration and Use Manual

2 Micro Motion® Model 2400S Transmitters

Before You Begin

1.6 Customer service

For technical assistance, phone the Micro Motion Customer Service department:

• In the U.S.A., phone 800-522-MASS (800-522-6277) (toll free)

• In Canada and Latin America, phone [phone] (U.S.A.)

•In Asia:

- In Japan, phone [phone]

- In other locations, phone [phone] (Singapore)

•In Europe:

- In the U.K., phone [phone] (toll-free)

- In other locations, phone [phone] (The Netherlands)

Customers outside the U.S.A. can also email Micro Motion customer service at
[e-mail].

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Installation Manual 3

4 Micro Motion® Model 2400S Transmitters

Chapter 2

Transmitter Orientation and Power Supply

2.1 Overview

This chapter describes:

• Rotating the transmitter on the sensor (optional)

• Rotating the user interface module on the transmitter (optional)

• Power supply requirements and wiring

2.2 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 all installation and
wiring procedures have been performed.

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

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.

2.3 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. Referring to Figure 2-1, unscrew the clamp that holds the transmitter to the feedthrough.

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.

Installation Manual 5

Transmitter Orientation and Power Supply

Feedthrough

Clamping ring

Feedthrough
notches

Figure 2-1 Rotating the transmitter on the sensor

2.4 Rotating the user interface module on the transmitter (optional)

Do not rotate the housing more than 360°. Excessive rotation can damage the wiring and cause
measurement error or flowmeter failure.

For easier access, the user interface module (whether or not the transmitter has an LCD display) can
be rotated on the transmitter up to 360° in 90° increments.

To rotate the user interface module on the transmitter:

1. Remove power from the unit.

Removing the transmitter housing cover in a hazardous area while the transmitter is powered up can
cause an explosion. Shut off power to the transmitter before removing the housing cover in a
hazardous area.

2. Referring to Figure 2-2, remove the transmitter housing cover and user interface module:

a. Loosen the four transmitter housing cover screws.

b. Remove the transmitter housing cover.

c. Loosen the two user interface screws.

d. Gently lift the user interface module, disengaging it from the user interface connector on

the transmitter.

3. On the back of the user interface module, four user interface connectors are provided. Rotate
the user interface module to the desired position and plug it into the user interface connector
on the transmitter. (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.

6 Micro Motion® Model 2400S Transmitters

Transmitter Orientation and Power Supply

4 × Transmitter

housing cover screws

(captive)

2 × User interface
screws (captive)

Transmitter housing
cover

User interface module

* Transmitter with aluminum housing shown.

Procedure for stainless steel housing is similar.

Figure 2-2 Rotating the user interface module on the transmitter

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

2.5 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

-50/60 Hz

- 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 Chapter 4.

Installation Manual 7

Transmitter Orientation and Power Supply

MinimumSupplyVoltage 18V CableResistance CableLength× 0.5A×()+=

MinimumSupplyVoltage 18V 0.0080 Ohms/ft 350 ft× 0.5A×()+=

MinimumSupplyVoltage 19.4V=

MinimumSupplyVoltage 18V CableResistance CableLength× 0.5A×()+=

2.5.1 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, refer to 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

14 AWG 0.0050 Ω/foot

16 AWG 0.0080 Ω/foot

18 AWG 0.0128 Ω/foot

20 AWG 0.0204 Ω/foot

2

2,5 mm

2

1,5 mm

2

1 mm

0,75 mm

0,5 mm

(1) These values include the resistance of both high and low conductors in a cable.

Example

2

2

The transmitter is mounted 350 feet from a DC power supply. If you want to use

0,0136 Ω/meter

0,0228 Ω/meter

0,0340 Ω/meter

0,0460 Ω/meter

0,0680 Ω/meter

(1)

16 AWG cable, calculate the required voltage at the DC power supply as follows:

2.6 Wiring the power supply

Note: This procedure is required only for Model 2400S Analog and PROFIBUS-DP transmitters.

To wire the power supply:

8 Micro Motion® Model 2400S Transmitters

1. Remove the transmitter housing cover and user interface module as described in Section 2.4.

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.

Transmitter Orientation and 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

A user-supplied switch may be installed 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.

Figure 2-3 Wiring the transmitter power supply

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Installation Manual 9

10 Micro Motion® Model 2400S Transmitters

Chapter 3

I/O Wiring – Model 2400S Analog Transmitters

3.1 Overview

This chapter 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 Chapter 4.

It is the user’s responsibility to verify that the specific installation meets the local and national safety
requirements and electrical codes.

3.2 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 all installation and
wiring procedures have been performed.

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

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.

3.3 I/O options

Table 3-1 lists the options for the transmitter’s two 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 manual entitled Micro Motion

®

Model 2400S Transmitters with Analog Outputs:

Configuration and Use Manual.

Table 3-1 Terminal configuration options

Channel Terminals Function Power Comm

Internal

(1)

or external

(1)

or external None

HART/Bell 202

A 1 & 2 mA Internal

B 3 & 4 Frequency

Discrete output Internal or external None

Discrete input Internal or external None

(1) Factory default.

(1)

Installation Manual 11

I/O Wiring – Model 2400S Analog Transmitters

3.4 Wiring the outputs

Hazardous voltage can cause severe injury or death. Shut off power to the transmitter before wiring the
transmitter outputs.

A transmitter that has been improperly wired or installed in a hazardous area could cause an explosion.
Make sure the transmitter is wired to meet or exceed local code requirements. Install the transmitter in
an environment that complies with the classification tag on the transmitter.

To wi re t he outpu ts:

1. Remove the transmitter housing cover and user interface module. See Section 2.4 for
instructions.

2. Wire the outputs according to the appropriate wiring diagram:

• For mA output wiring diagrams, see Section 3.4.1.

• For frequency output wiring diagrams, see Section 3.4.2.

• For discrete output wiring diagrams, see Section 3.4.3.

• For a discrete input wiring diagram, see Section 3.4.4.

3. Replace the user interface module and transmitter housing cover.

Note: It is not necessary to open the power compartment to wire the outputs. Do not open the power
compartment unless you are also wiring the power supply.

3.4.1 mA output wiring

The wiring diagrams in this section are examples of proper wiring for the Model 2400S mA output.
The following options are shown:

• 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 may use either HART/analog
single-loop wiring or HART multidrop wiring.

12 Micro Motion® Model 2400S Transmitters

I/O Wiring – Model 2400S Analog Transmitters

820 Ohm maximum

loop resistance

+

–

HART-compatible
host or controller

For analog communications:

• 820 Ohm maximum loop
resistance

For HART communications:

• 600 Ohm maximum loop
resistance

• 250 Ohm minimum loop
resistance

–

+

Figure 3-1 Basic mA output wiring – Internal power

Figure 3-2 HART/analog single-loop wiring – Internal power

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Installation Manual 13

I/O Wiring – Model 2400S Analog Transmitters

Note: See Figure 3-5 for voltage and
resistance values.

VDC

R

load

–

+

+

–

Note: See Figure 3-5 for voltage and resistance values.

VDC

R

load

(250–600 Ohm

resistance)

–

+

+

HART-

compatible host

or controller

–

Figure 3-3 Basic mA output wiring – External power

Excessive current will damage the transmitter. Do not exceed 30 VDC input. Terminal current must be
less than 500 mA.

Figure 3-4 HART/analog single-loop wiring – External power

14 Micro Motion® Model 2400S Transmitters

I/O Wiring – Model 2400S Analog Transmitters

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

HART-compatible

host or controller

HART-compatible

transmitter

SMART FAMILY™

transmitter

Note: For optimum HART communication, make sure the output loop
is single-point-grounded to an instrument-grade ground.

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

Figure 3-5 Required external voltage versus mA load resistance

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Figure 3-6 HART multidrop wiring – Internal or external power

Installation Manual 15

I/O Wiring – Model 2400S Analog Transmitters

Counter

000042

Note: See Figure 3-11 for output
voltage versus load resistance.

+

–

Output voltage level is +24 VDC ±3%
with high resistance load.

–
+

Note: See Figure 3-12 for recommended
resistor versus supply voltage.

000042

Counter

Pull-up resistor

3–30 VDC

+

–

3.4.2 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

Figure 3-7 Frequency output wiring – Internal power

Figure 3-8 Frequency output wiring – External power

Excessive current will damage the transmitter. Do not exceed 30 VDC input. Terminal current must be
less than 500 mA.

16 Micro Motion® Model 2400S Transmitters

I/O Wiring – Model 2400S Analog Transmitters

Total load

Note: See Figure 3-11 for output
voltage versus load information.

+

–

–

+

Pull-up resistor or

DC Relay

3–30 VDC

Maximum sink current: 500 mA

+

–

Note: Refer to Figure 3-12 for recommended
resistor versus supply voltage.

3.4.3 Discrete output wiring

Discrete 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 3-9

• External power – Figure 3-10

Figure 3-9 Discrete output wiring – Internal power

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Figure 3-10 Discrete output wiring – External power

Excessive current will damage the transmitter. Do not exceed 30 VDC input. Terminal current must be
less than 500 mA.

Installation Manual 17

I/O Wiring – Model 2400S Analog Transmitters

24

22

20

18

16

14

12

10

8

6

4

2

0

0 20000 40000 60000 80000 100000

High level output voltage (Volts)

Load resistance (Ohms)

Open circuit output

voltage = 24 VDC ±3%

OPERATING REGION

3

400

4400

4000

3600

3200

2800

2400

2000

1600

1200

800

6 9 12 15 18 21 24 27 30

Supply voltage (Volts)

External pull-up resistor range (Ohms)

Recommended

resistor value range

Note: When using a discrete output to drive a relay, choose external pull-up to limit current to
less than 500 mA.

Figure 3-11 Output voltage vs. load resistance – Internal power

Figure 3-12 Recommended pull-up resistor versus supply voltage – External power

18 Micro Motion® Model 2400S Transmitters

I/O Wiring – Model 2400S Analog Transmitters

–

+

PLC or

other device

ORVDC

(see Table 3-2

)

Direct DC input
(see Table 3-2

)

–

+

+

–

3.4.4 Discrete input wiring

Discrete input 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 3-13

• External power – Figure 3-14

If external power is configured, power may be supplied by a PLC or other device, or by direct DC
input. See Table 3-2 for input voltage ranges.

Table 3-2 Input voltage ranges for external power

VDC Range

3–30 High level

0–0.8 Low level

0.8–3 Undefined

Figure 3-13 Discrete input wiring – Internal power

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Figure 3-14 Discrete input wiring – External power

Installation Manual 19

20 Micro Motion® Model 2400S Transmitters

Chapter 4

I/O Wiring – Model 2400S PROFIBUS-DP and
DeviceNet Transmitters

4.1 Overview

This chapter describes how to wire I/O for Model 2400S PROFIBUS-DP and DeviceNet transmitters.

Note: To wire I/O for Model 2400S Analog transmitters, see Chapter 3.

It is the user’s responsibility to verify that the specific installation meets the local and national safety
requirements and electrical codes.

4.2 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 all installation and
wiring procedures have been performed.

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.

4.3 I/O wiring for Model 2400S PROFIBUS-DP transmitters

To connect the I/O wiring for a 2400S PROFIBUS-DP transmitter:

1. Remove the user interface cover and user interface module. See Section 2.4 for instructions.

2. Wire the transmitter to the PROFIBUS-DP segment according to the diagram in Figure 4-1.
Follow all local safety regulations.

3. Replace the user interface module and user interface cover.

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Note: It is not necessary to open the power compartment to wire the outputs. Do not open the power
compartment unless you are also wiring the power supply.

Note: The PROFIBUS cable shield is required to be grounded at both ends. At the 2400S, ground the
cable shield in an appropriate cable gland. If an optional PROFIBUS-DP Eurofast M12 connector is
used, the cable shield is grounded via the threads of the connector.

Hazardous voltage can cause severe injury or death. Keep the power supply compartment closed while
wiring the transmitter outputs, or shut off power to the transmitter.

A transmitter that has been improperly wired or installed in a hazardous area could cause an explosion.
Make sure the transmitter is wired to meet or exceed local code requirements. Install the transmitter in
an environment that complies with the classification tag on the transmitter.

Installation Manual 21

I/O Wiring – Model 2400S PROFIBUS-DP and DeviceNet Transmitters

Spur to PROFIBUS-DP segment according to the
Installation Guideline for PROFIBUS-DP/FMS
available at www.profibus.org

➯

COM A (green) COM B (red)

Note: The Model 2400S
PROFIBUS-DP transmitter does
not have terminals for termination
wiring. An external terminator is
not required. The transmitter has
an internal terminator. There is a
switch on the user interface for
enabling internal termination. See
Section 4.3.1.

Switch to enable

internal termination

impedance

Figure 4-1 Model 2400S PROFIBUS-DP I/O wiring

4.3.1 Enabling internal termination

Model 2400S PROFIBUS-DP transmitters have a switch on the user interface module to enable
internal termination impedance. Refer to Figure 4-2.

Figure 4-2 Model 2400S PROFIBUS-DP internal termination impedance switch

22 Micro Motion® Model 2400S Transmitters

I/O Wiring – Model 2400S PROFIBUS-DP and DeviceNet Transmitters

➯

Attach a 5-pin female

Eurofast connector here

4.4 I/O wiring for Model 2400S DeviceNet transmitters

Connect the transmitter to the DeviceNet segment according to the diagram in Figure 4-3. The
transmitter is shipped with a DeviceNet male sealed Micro Connector (Eurofast) that has been
preinstalled and wired according to the DeviceNet specification.

Follow all local safety regulations.

A transmitter that has been improperly wired or installed in a hazardous area could cause an explosion.
Make sure the transmitter is wired to meet or exceed local code requirements. Install the transmitter in
an environment that complies with the classification tag on the transmitter.

Figure 4-3 Model 2400S DeviceNet I/O wiring

Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin Power Supply I/O Wiring – DP and DNI/O Wiring – ANBefore You Begin

Installation Manual 23

24 Micro Motion® Model 2400S Transmitters

Appendix A

Dimensions in

inches

(mm)

4.545

(115,4)

3.140
(79,7)

3.140
(79,7)

4.689

(119,1)

.800

(20,3)

1.600

(40,6)

4.344

(110,3)

Dimensions and Specifications

A.1 Dimensions

Figure A-1 shows the dimensions of the Model 2400S transmitter. For sensor dimensions, see the
sensor data sheet.

Figure A-1 Transmitter housing dimensions – Painted aluminum housing

Return Policy IndexSpecifications

Installation Manual 25

Dimensions and Specifications

Dimensions in

inches

(mm)

5.70

(114,8)

5.20

(132,1)

5.70

(114,8)

5.20

(132,1)

0.793

(20,1)

1.586
(40,3)

4.515

(114,7)

Note: Cover screws
must be torqued to a
minimum of 16 in-lbs
(1,8 N-m)

Figure A-2 Transmitter housing dimensions – Stainless steel housing

26 Micro Motion® Model 2400S Transmitters

Dimensions and Specifications

1/2–NPT threads

Chamfer No chamfer

M20 threads

A.2 Physical specifications

Housing Polyurethane-painted aluminum

Optional: 304L stainless steel with surface finish of 32 RA

Weight Transmitter is mounted integrally with sensor. For weight of flowmeter, see product

data sheet for sensor.

Mounting and cabling Model 2400S transmitters are mounted integrally with sensor. The transmitter can

be rotated on the sensor up to 360° in 45° increments.
Cable entry holes are available with 1/2–NPT and M20 options (refer to the 2400S

Product Data Sheet for ordering codes).

Return Policy IndexSpecifications

A.3 Power supply – Models 2400S Analog and PROFIBUS-DP

Self-switching AC/DC input, automatically recognizes supply voltage.
Complies with low voltage directive 2006/95/EC per EN 61010-1 (IEC 61010-1) with amendment 2.
Installation (Overvoltage) Category II, Pollution Degree 2.

AC • 85–265 VAC

•50/60 Hz

• 4 watts typical, 7 watts maximum

DC • 18–100 VDC

• 4 watts typical, 7 watts maximum

Fuse IEC 127-1.25 fuse, slow blow

Installation Manual 27

Dimensions and Specifications

A.4 Electrical connections

Model 2400S Analog

Input and output connections Two pairs of wiring terminals for transmitter inputs/outputs. Screw terminals accept

solid or stranded conductors, 26 to 14 AWG (0,14 to 2,5 mm

Power connections One pair of wiring terminals accepts AC or DC power. One internal ground lug for

power supply ground wiring.

Digital comm maintenance
connections

Screw terminals accept solid or stranded conductors, 26 to 14 AWG
(0,14to2,5mm

Two clips for temporary connection to the service port.
Two clips for temporary connection to HART/Bell 202 terminals.

2

).

Model 2400S PROFIBUS-DP

PROFIBUS-DP segment One pair of wiring terminals for connection to PROFIBUS-DP segment. Connection

type:

• Screw terminals accept solid or stranded conductors, 26 to 14 AWG
(0,14to2,5mm

2

).

• Five-pin PROFIBUS-DP M12 (Eurofast) female connector (optional).

Power connections One pair of wiring terminals accepts AC or DC power. One internal ground lug for

power supply ground wiring.

Digital comm maintenance

Screw terminals accept solid or stranded conductors, 26 to 14 AWG
(0,14to2,5mm

Two clips for temporary connection to the service port.

2

).

connections

Model 2400S DeviceNet

DeviceNet segment One pre-installed male 5-pin Eurofast connector for I/O and power supply wiring

Digital comm maintenance

Two clips for temporary connection to the service port.

connections

2

).

28 Micro Motion® Model 2400S Transmitters

Dimensions and Specifications

With display Without display

With display Without display

With display Without display

A.5 User interface

Model 2400S Analog

Model 2400S PROFIBUS-DP

Return Policy IndexSpecifications

Model 2400S DeviceNet

Installation Manual 29

Dimensions and Specifications

Interface functions

All models with or without display • Suitable for hazardous area installation.

• User interface module can rotate 360° on the transmitter in 90° increments.

• Three-color status LED on user interface module indicates flowmeter condition at
a glance, using a solid green, yellow, or red light. Zero in progress is indicated by
a flashing yellow light.

• Two clips for service port connections (requires removing transmitter housing
cover).

Model 2400S Analog with or
without display

Model 2400S DeviceNet, with or
without display

Model 2400S PROFIBUS-DP, with
or without display

All models with display • Depending on purchase option, transmitter housing cover has glass or

All models without display • Transmitter housing cover is all metal (no lens).

• Two clips for HART/Bell 202 connections (requires removing transmitter
housing cover).

• HART security switch (requires removing transmitter housing cover).

• Three rotary switches for selecting network address and baud rate (network
address and baud rate are also software selectable).

• Module and network LEDs to indicate DeviceNet status.

• Three rotary switches for selecting network address (network address is also
software selectable).

• DIP switch for enabling internal termination resistor.

• Address and network LEDs that indicate PROFIBUS-DP status.

plastic lens.

• User interface module includes LCD panel. LCD line 1 displays process variable;
line 2 displays engineering unit of measure.

• Display update rate is user-configurable: 1 to 10 seconds at 1-second increments.

• Display backlighting may be adjusted or turned off.

• Operator access to transmitter menus is provided via optical switches that are
operated through the lens. LED indicators show when a “button” has been
pressed.

• Infrared port allows access to service port from IrDA device (e.g., PDA running
Pocket ProLink) without removing transmitter housing cover.

• Access to user interface requires removing transmitter housing cover.

• Zero button allows flowmeter zero from field (requires removing transmitter
housing cover).

•No IrDA.

30 Micro Motion® Model 2400S Transmitters

Dimensions and Specifications

A.6 Input/output signals

Model 2400S Analog

Channel A One active or passive 4–20 mA output

• Not intrinsically safe

• Isolated to ±50 VDC from all other outputs and earth ground

• Maximum load limit: 820 ohms

• Can report mass flow, volume flow, density, temperature, or drive gain

• Output is linear with process from 3.8 to 20.5 mA, per NAMUR NE43 (June 1994)

Channel B (configurable) One active or passive frequency/pulse output

• Not intrinsically safe

• Can report mass flow or volume flow, which can be used to indicate flow rate or
total

• Scalable to 10,000 Hz

•Power:

- Internal (active): +24 VDC ±3% with a 2.2 kohm internal pull-up resistor

- External (passive): +30 VDC maximum, +24 VDC typical

• Output is linear with flow rate to 12,500 Hz

One active or passive discrete output

• Not intrinsically safe

• Can report five discrete events, flow switch, forward/reverse flow, calibration in
progress, or fault

•Power:

- Internal (active): +24 VDC ±3% with a 2.2 kohm internal pull-up resistor

- External (passive): +30 VDC maximum, +24 VDC typical

• Maximum sink capability: 500 mA

One active or passive discrete input

• Not intrinsically safe

•Power:

- Internal (active): +24 VDC, 10 mA maximum source current

- External (passive): +3 to 30 VDC maximum

• Can reset all totals, reset mass total, reset volume total, start/stop totalizers, or
start sensor zero

Model 2400S PROFIBUS-DP Digital 2-way PROFIBUS-DP signal.

Certified by PNO.

Model 2400S DeviceNet Digital 2-way DeviceNet signal.

Certified by ODVA.

Return Policy IndexSpecifications

Installation Manual 31

Dimensions and Specifications

A.7 Digital communications

All versions

Service port One service port for temporary connections (requires removing transmitter

Wireless If transmitter has display, service port can be accessed with IrDA device (for

Model 2400S Analog

HART/Bell 202 HART signal is superimposed on the primary milliamp output, and is available for

Model 2400S PROFIBUS-DP

PROFIBUS-DP Digital 2-way communication protocol

Model 2400S DeviceNet

DeviceNet Digital 2-way communication protocol

housing cover)
Uses RS-485 Modbus signal, 38.4 kBaud, one stop bit, no parity
Address: 111 (not configurable)

example, a PDA running Pocket ProLink) without removing transmitter housing
cover.

host system interface:

• Frequency: 1.2 and 2.2 kHz

• Amplitude: to 1.0 mA

• 1200 baud, one stop bit, odd parity

• Address: 0 (default), configurable

• Requires 250 to 600 Ω resistance

• Automatically recognizes network baud rate

• Address selectable by 3 rotary switches, or software selectable

• Address and baud rate selectable by 3 rotary switches (2 to select address, 1 to
select baud rate), or software selectable

A.8 Host interface

®

Model 2400S Analog ProLink

HART DD file supports all functionality.

Model 2400S PROFIBUS-DP ProLink II v2.5 or later from Micro Motion supports full device configuration.

• GSD file conforming to the PROFIBUS-DP specification:

• DD file conforming to Profibus EDDL specification

Model 2400S DeviceNet ProLink II v2.5 or later from Micro Motion supports full device configuration.

• EDS file conforming to the DeviceNet specification:

II v2.5 or later from Micro Motion supports full device configuration.

- Provides Profibus Class 1 Master functions

- Enables reading and controlling all process data

- Provides Profibus Class 2 Master functions

- Enables device configuration

- Supports Siemens Simatic PDM

- Enables device configuration

32 Micro Motion® Model 2400S Transmitters

Dimensions and Specifications

A.9 Environmental limits

Ambient temperature limits Operating and storage: –40 to +140 °F (–40 to +60 °C)

Below –4 °F (–20 °C), LCD responsiveness decreases and LCD may become
difficult to read. Above 131 °F (55 °C), some darkening of the LCD panel might
occur.

ATEX requires limiting ambient temperature to below 131 °F (55 °C).

Humidity limits 5 to 95% relative humidity, non-condensing at 140 °F (60 °C)

Vibration limits Meets IEC68.2.6, endurance sweep, 5 to 2000 Hz, 50 sweep cycles at 1.0 g

A.10 Environmental effects

All models

EMI effects Complies with electromagnetic compatibility directive 2004/108/EC per

EN 61326 industrial
Conforms to NAMUR NE21 Version: 10.02.2004

Model 2400S Analog only

Ambient temperature effect On mA output: ±0.005% of span per °C

Return Policy IndexSpecifications

A.11 Hazardous area classifications

All models

(1)

C-US

CSA

AT E X

(2)

Analog or PROFIBUS-DP II 3G EEx n A C II T5

DeviceNet II 3G Ex nA II T5

(1) CSA is a Canadian approvals agency that provides approvals accepted both in the U.S.A. and in Canada.
(2) ATEX is a European directive.

Class I Division 2 Groups A, B, C, D
Class II Division 2 Groups F and G

II 3D IP66/IP67 T70°C

II 3D IP66/IP67 T70°C

Installation Manual 33

34 Micro Motion® Model 2400S Transmitters

Appendix B

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.micromotion.com, or by phoning the Micro Motion Customer Service department.

B.1 New and unused equipment

Only equipment that has not been removed from the original shipping package will be considered new
and unused. New and unused equipment requires a completed Return Materials Authorization form.

Return Policy IndexSpecifications

B.2 Used equipment

All equipment that is not classified as new and unused is considered used. This equipment must be
completely decontaminated and cleaned before being returned.

Used equipment must be accompanied by a completed Return Materials Authorization form and a
Decontamination Statement for all process fluids that have been in contact with the equipment. If a
Decontamination Statement cannot be completed (e.g., for food-grade process fluids), you must
include a statement certifying decontamination and documenting all foreign substances that have
come in contact with the equipment.

Installation Manual 35

36 Micro Motion® Model 2400S Transmitters

Index

C

Channels

configuration options

D

DeviceNet
Dimensions
Discrete input wiring
Discrete output wiring

Documentation

F

Flowmeter

Frequency output wiring

I

I/O

Impedance switch
Installation

M

mA output wiring

Moisture protection

21, 23

25

external power
internal power

17

2

components
documentation

external power
internal power

analog wiring
configuration options
DeviceNet wiring
PROFIBUS-DP wiring

1

16

11

22

I/O wiring
moisture protection
overview
power supply requirements
rotating transmitter on sensor
rotating user interface module on transmitter
transmitter dimensions

11, 21, 23

2

12

external power
HART multidrop
HART single-loop

external power
internal power

internal power

13

11, 21, 23

19

17

17

2

16

16

11, 21, 23

21, 23

21

5

7

5

25

14

15

14

13

5, 11, 21

6

P

Power supply

requirements
wiring

PROFIBUS-DP

impedance switch

R

Return policy

S

Safety messages

1

Sensor
Specifications

T

Transmitter

dimensions
documentation
I/O options
I/O wiring
installation overview
orientation
rotating on sensor
rotating user interface module
specifications

U

User interface module

rotating

W

Wiring

11, 21

analog
DeviceNet
discrete input
discrete output

external power
internal power

frequency output

external power

internal power
I/O options
mA output

external power

HART multidrop

7

8

21

22

35

1

25

1

25

2

1, 11, 21, 23

11, 21

5

5

25

6

11

23

19

17

17

17

16

16

16

1, 11, 23

12

14

Return Policy IndexSpecifications

2

6

15

Installation Manual 37

Index

HART single-loop, external power 14
HART single-loop, internal power

internal power
moisture protection
power supply wiring
PROFIBUS-DP

13

13

11, 21

8

21

38 Micro Motion® Model 2400S Transmitters

©2008, Micro Motion, Inc. All rights reserved. P/N 20003402, Rev. D

*20003402*

For the latest Micro Motion product specifications, view the
PRODUCTS section of our web site at www.micromotion.com

Micro Motion Inc. USA

Worldwide Headquarters

7070 Winchester Circle
Boulder, Colorado 80301
T [phone]

[phone]

F [phone]

Micro Motion Europe

Emerson Process Management
Neonstraat 1
6718 WX Ede
The Netherlands
T [phone]
F [phone]

Micro Motion United Kingdom

Emerson Process Management Limited
Horsfield Way
Bredbury Industrial Estate
Stockport SK6 2SU U.K.
T [phone]
F [phone]

Micro Motion Asia

Emerson Process Management
1 Pandan Crescent
Singapore 128461
Republic of Singapore
T [phone]
F [phone]

Micro Motion Japan

Emerson Process Management
1-2-5, Higashi Shinagawa
Shinagawa-ku
Tokyo 140-0002 Japan
T [phone]
F [phone]