Honeywell STT700 SmartLine Manual de instrucciones

STT700 SmartLine

Temperature Transmitter

Quick Start Installation Guide

34-TT-25-19, Revision 1, July 2017

1 STT700 Quick Start Installation Guide July 2017

This document provides descriptions

and procedures for the Quick Installation

of Honeywell’s family of SmartLine

Temperature Transmitters.

The STT700 is available in a variety of

models for measuring Thermocouples,

RTD, Millivolts and Ohm sensor types.

For full details refer to the manuals

listed below for Operation, Installation,

Protocol, Configuration, Calibration,

Maintenance, Parts, Safety and

Approvals etc. including options.

Various other documents are available

on the CD supplied with your shipment.

Copyrights, Notices and Trademarks

Revision 1, May 2017

Trademarks

SFC, SmartLine, STT700 are U.S.

registered trademarks of Honeywell Inc.

HART®is a trademark of FieldComm

Group™

Revision history

Rev.1, July 2017 –1st release

References

The following list identifies all documents that may be sources of reference for material

discussed in this publication.

Document Title

Document #

STT700 SmartLine Transmitter User’s Manual

34-TT-25-17

STT700 SmartLine Transmitter HART User Manual

34-TT-25-18

SmartLine Temperature Safety Manual

34-TT-25-20

STT700 Specification

34-TT-03-19

STT700 Surge Protection spec

34-TT-03-20

STT700 Field Device Specification (HART)

34-TT-00-05

MC Toolkit User Manual (MCT404)

34-ST-25-50

For start-up, operation (including configuration), maintenance and calibration refer to

the STT700 Transmitter User’s manual, #34-TT-25-17

SmartLine Temperature Transmitter

2 STT700 Quick Start Installation Guide July 2017

Table of Contents

Installation.................................................................................................................... 3

Features and options.................................................................................................... 3

Mounting the Transmitter ............................................................................................. 4

Wiring Connections and Power Up............................................................................... 7

Wiring Variations...................................................................................................9

Input Sensor Wiring............................................................................................... 9

Exlosion-Proof Conduit Seal ...................................................................................... 10

LIGHTNING PROTECTOR........................................................................................ 11

Tables

Table 1: Installation considerations.............................................................................. 3

Table 2: Mounting Dimensions..................................................................................... 5

Figures

Figure 1 –STT700 Temperature Transmitter (HART left, DE right)............................. 3

Figure 2: DIN Rail Mounting......................................................................................... 4

Figure 3: Wall Mounting Dimensions............................................................................5

Figure 4: Pipe Mounting Dimensions............................................................................ 5

Figure 5: Spring Loading and Sensor Assembly .......................................................... 6

Figure 6: STT700 HART Transmitter Operating Ranges.............................................. 7

Figure 7: STT700 DE Transmitter Operating Ranges .................................................. 7

Figure 8: STT 700 Terminal connections .....................................................................8

Figure 9: HART/DE Input Wiring Diagram for single sensor connection ......................9

Figure 10: Wiring Diagram for HART Dual Sensor Connections................................ 10

Figure 11: Lightning Protector Dimensions ................................................................ 11

Figure 12: Installation without EU Meter..................................................................... 12

Figure 13: Installation with EU Meter.......................................................................... 13

July 2017 STT700 Quick Start Installation Guide 3

INSTALLATION

Evaluate the site selected for the Transmitter installation with respect to the process

system design specifications and Honeywell’s published performance characteristics

for your particular model. Conditions to be considered include:

Table 1: Installation considerations

Environmental Conditions:

Process Parameters

Ambient temperature

Temperature

Relative Humidity

Maximum Sensor Input Ratings

Potential Noise Sources:

Vibration Sources

Radio Frequency Interference (RFI)

Pumps

Electromagnetic Interference (EMI)

Motorized System Devices

(e.g., pumps)

Valve Cavitation

In preparation for post-installation processes, refer to the MC Toolkit User Manual,

Document # #34-ST-25-50 (MCT404), for battery conditioning and device operation

and maintenance information.

FEATURES AND OPTIONS

As shown in Figure 1, the STT700 is packaged in a single module. The elements in

this module are connected to the process sensors, measure the process variables,

respond to setup commands and execute the software and protocol for the different

temperature measurement types.

Figure 1 –STT700 Temperature Transmitter (HART left, DE right)

The transmitter measures process temperature and outputs a signal proportional to

the measured process variable (PV). Available output communication protocols

include 4 to 20mA, Honeywell Digitally Enhanced (DE) and HART protocols.

SmartLine Temperature Transmitter

4 STT700 Quick Start Installation Guide July 2017

MOUNTING THE TRANSMITTER

DIN Rail Mounting

If the STT700 is to be installed on DIN Rail then the main considerations are electrical

connections and mechanical fixing. Electrical connections are identical to the bench

test instructions except that thermocouple wire is likely to be used with thermocouples.

Mechanical fixing of the module is by means of the snap-in DIN Rail Clips which are

screwed to the bottom lugs of the module.

Figure 2: DIN Rail Mounting

The DIN Rail needs to be connected to Earth Ground, refer to STT700 SmartLine

transmitter user’s manual, #34-TT-25-17.

Uninstalling/Installing EU Meter from Housing

EU Meter:

1. Remove the EU METER from the mounting bracket.

2. Unfasten the 2 mounting screws.

3. Remove the bracket.

To put the EU meter back follow the above sequence in the reverse order.

Housing Cover and O Ring:

1. Review O-ring condition & replace, if damaged. New O-ring can be

ordered from spare parts list.

2. Apply O-ring lubricant to the end cap O-ring. Relax O-ring twists, if any.

3. Assemble housing cover with sufficient torque for securing against IP.

July 2017 STT700 Quick Start Installation Guide 5

Mounting Module in Housing

The STT700 module can be installed in a variety of housings suitable for direct head

mounting, 2'' (50mm) pipe mounting or wall mounting.

Field Mount Housing

with Meter

Field Mount Housing

without Meter

Field Mount Housing

with and without Meter

Figure 3: Wall Mounting Dimensions

Field Mount Housing

with Meter

Field Mount Housing

without Meter

Field Mount Housing

with and without Meter

Figure 4: Pipe Mounting Dimensions

Table 2: Mounting Dimensions

Dimensions

Aluminum (field mount housing)

Without integral meter

70 mm [2.76 inch]

120,8 mm [4.76 inch]

With integral meter

127 mm [5.00 inch]

210,8 mm [8.30 inch]

SmartLine Temperature Transmitter

6 STT700 Quick Start Installation Guide July 2017

Spring Loading

Figure 5: Spring Loading and Sensor Assembly

Spring loading is available worldwide with direct head mounting. In North America, the

spring loading is typically included in the sensor/thermowell assembly and is available

with all housings. For non-North American spring loading as shown in Figure 5, simply

include the springs under the 33 mm pitch mounting screws, pass the screws through

the module and sensor mounting plate and snap in the retaining circlip to the screws

to hold the assembly together. Guide the sensor assembly through the housing sensor

entry and screw down the 33 mm screws until the limit is reached as the sensor

presses against the bottom of thermowell.

For wall or 2'' pipe mounting, the temperature sensor can be remote from the STT700

field mount housing or integral to the housing. For remote installations, the sensor

wiring should be run in shielded, twisted pair wiring and connected via one of the

housing wiring entries. For explosionproof/flameproof installations, ensure that the

cable entries are fitted with flameproof adaptors and that the wiring grade complies

with local standards.

For more details on wiring and dimensions for Aluminum Direct head and Cast iron

Direct head refer to STT700 SmartLine transmitter user’s manual, #34-TT-25-17.

July 2017 STT700 Quick Start Installation Guide 7

WIRING CONNECTIONS AND POWER UP

Summary

The transmitter is designed to operate in a two-wire power/current loop with loop

resistance and power supply voltage within the HART and DE operating ranges shown

in Figure 6.

Figure 6: STT700 HART Transmitter Operating Ranges

Figure 7: STT700 DE Transmitter Operating Ranges

8 STT700 Quick Start Installation Guide July 2017

Loop wiring is connected to the transmitter by simply attaching the positive (+) and

negative (–) loop wires to the positive (+) and negative (–) terminals on the transmitter

terminal block in the electronics housing shown in Figure 8.Route the wires through

the pre-molded channels on the connector cap. Connect the loop power wiring shield

to earth ground only at the power supply end.

Note that loop-power for this transmitter is not polarity-sensitive.

Figure 8: STT 700 Terminal connections

This transmitter uses the two mounting screws to connect it to earth ground.

Grounding the transmitter for proper operation is required, as doing so tends to

minimize the possible effects of noise on the output signal and affords protection

against lightning and static discharge. An optional lightning protection module is

available for use in areas that are highly susceptible to lightning strikes. As noted

above, the loop power wiring shield should only be connected to earth ground at the

power supply end.

Wiring must comply with local codes, regulations and ordinances.

Grounding may be required to meet various approval body certification,

for example CE conformity. Refer to the STT700 SmartLine Transmitter User’s

Manual 34-TT-25-17 for details

For HART and DE the transmitter is designed to operate in a two-wire power/current

loop with loop resistance and power supply voltage within the operating range; see

Figure 9. With an optional remote meter, the voltage drop for this must be added to

the basic power supply voltage requirements to determine the required transmitter

voltage (VXMTR) and maximum loop resistance (RLOOP MAX). Additional

consideration is required when selecting intrinsic safety barriers to ensure that they

will supply at least minimum transmitter voltage (VXMTR MIN), including the required

250 ohms of resistance (typically within the barriers) needed for digital

communications.

July 2017 STT700 Quick Start Installation Guide 9

Wiring Variations

The above procedures are used to connect power to a transmitter. For loop wiring and

external wiring, detailed drawings are provided for transmitter installation in

non-intrinsically safe areas and for intrinsically safe loops in hazardous area locations.

This procedure shows the steps for connecting power to the transmitter.

Grounding and Lightning Protection

Connect a wire from the mounting screws to earth ground to make the protection

effective. Use a size 8 AWG or (8.37mm2) bare or green covered wire for this

connection. For ungrounded thermocouple, mV, RTD or ohm inputs, connect the input

wiring shield(s) to the same earth ground connection. For grounded thermocouple

inputs, connect the internal ground connection shown in Figure 8 to the same earth

ground as used by the thermocouple. As noted above, the loop power wiring shield

should only be connected to earth ground at the power supply end.

For DE, the burnout direction needs to be selected in the hardware and this will be

detected at power on time.

Input Sensor Wiring

Connect the input sensors as shown in Figure 9 below: RTD Thermocouple, mV, Ohm

and Millivolt connections.

Figure 9: HART/DE Input Wiring Diagram for single sensor connection

10 STT700 Quick Start Installation Guide July 2017

The single sensor connections can also be used on a dual input transmitter when a

second input is not required. In this case, it is recommended that the second input be

configured to none in software.

In case of RTD type being configured to 4-wire, this is automatically done.

Figure 10: Wiring Diagram for HART Dual Sensor Connections

EXLOSION-PROOF CONDUIT SEAL

When installed as explosion proof in a Division 1 Hazardous Location, keep

covers tight while the Transmitter is energized. Disconnect power to the

Transmitter in the non-hazardous area prior to removing end caps for service.

When installed as non-incendive equipment in a Division 2 hazardous location,

disconnect power to the Transmitter in the non-hazardous area, or determine that the

location is non-hazardous before disconnecting or connecting the Transmitter wires.

Transmitters installed as explosion proof in Class I, Division 1, Group A Hazardous

(classified) locations in accordance with ANSI/NFPA 70, the US National Electrical

Code, require a LISTED explosion proof seal to be installed in the conduit, within 18

inches (457.2 mm) of the transmitter.

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