Acromag TT236-0600 Bedienungsanleitung

USB Programmable, DIN Rail Mount

Thin Transmitter

Model TT236-0600, Two-Wire Transmitter,

DC Current or Low DC Voltage Input

USER’S MANUAL

ACROMAG INCORPORATED Tel: (248) 295-0880

30765 South Wixom Road Fax: (248) 624-9234

Wixom, MI 48393-2417 U.S.A. email: [email protected]

Data and specifications are subject to change without notice. 8500940J

Acromag, Inc. Tel: 248-295-0880 - 2 -

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Table of Contents

GETTING STARTED

DESCRIPTION.......................................................................................................4

Key Features........................................................................................................................4

Application..........................................................................................................................4

Mechanical Dimensions .......................................................................................................5

DIN Rail Mounting & Removal..............................................................................................5

ELECTRICAL CONNECTIONS............................................................................6

Input Connections................................................................................................................7

Output/Power Connections .................................................................................................8

Earth Ground Connections .................................................................................................10

USB Connections................................................................................................................11

CONFIGURATION SOFTWARE...................................................................... 12

Quick Overview –Android .................................................................................................12

Quick Overview –Windows ...............................................................................................13

OPERATION STEP-BY-STEP.......................................................................... 15

Connections.......................................................................................................................15

Configuration.....................................................................................................................16

Calibration (Optional) ........................................................................................................19

BLOCK DIAGRAM ............................................................................................. 21

How It Works.....................................................................................................................21

TROUBLESHOOTING....................................................................................... 22

Diagnostics Table...............................................................................................................22

Service & Repair Assistance ...............................................................................................24

ACCESSORIES .................................................................................................... 25

Software Interface Package................................................................................................25

USB Isolator.......................................................................................................................25

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USB A-B Cable....................................................................................................................25

USB A-mini B Cable............................................................................................................25

USB OTG Cable ..................................................................................................................26

End Stops...........................................................................................................................26

SPECIFICATIONS .............................................................................................. 27

Model Number ..................................................................................................................27

Input .................................................................................................................................27

Output...............................................................................................................................29

USB Interface.....................................................................................................................30

Enclosure & Physical..........................................................................................................31

Environmental...................................................................................................................31

Agency Approvals ..............................................................................................................33

Reliability Prediction..........................................................................................................33

Configuration Controls.......................................................................................................34

REVISION HISTORY......................................................................................... 34

All trademarks are the property of their respective owners.

IMPORTANT SAFETY CONSIDERATIONS

You must consider the possible negative effects of power, wiring, component, sensor, or software failure in the design of

any type of control or monitoring system. This is very important where property loss or human life is involved. It is

important that you perform satisfactory overall system design and it is agreed between you and Acromag, that this is your

responsibility.

The information of this manual may change without notice. Acromag makes no warranty of any kind with regard to

this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular

purpose. Further, Acromag assumes no responsibility for any errors that may appear in this manual and makes no

commitment to update, or keep current, the information contained in this manual. No part of this manual may be

copied or reproduced in any form without the prior written consent of Acromag, Inc.

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GETTING STARTED

DESCRIPTION

Symbols on equipment:

Means “Refer to User’s Manual

(this manual) for additional

information”

The TT236-06x0 is an ANSI/ISA Type II transmitter designed to interface with DC

Current (0-20mA/4-20mA), or Low Voltage DC (±0.5V/0-500mV) sensors, isolate the

input signal, and modulate a 4-20mA current signal to drive a two-wire current loop.

This unit is setup and calibrated using configuration software and a USB connection

to Windows-based PC’s (Windows XP and later versions only). The unit provides an

adjustable input range, input isolation, and variable input filtering.

Key Features

•Digitally setup and calibrated w/ Windows software via USB.

•Thin 12.5mm wide enclosure for high-density DIN-rail mounting.

•Supports both process current input and DC voltage input on same model.

•DC Current Input 1 for 0-20mA, 4-20mA, 0-11.17mA, and ±1mA.

•DC Voltage Input 2 for ±0.5V and 0-500mV.

•High measurement accuracy and linearity with 16-bit conversion.

•Adjustable input ranges.

•Extra output connections support optional sourced output wiring.

•Variable Input Filter Adjustment.

•Normal or Reverse Acting output.

•Convenient two-wire loop power with non-polarized output connections.

•Namur compliant loop current.

•Wide ambient temperature operation.

•Thoroughly Tested and Hardened For Harsh Environments.

•CE Approved.

•FCC Conformity Class B.

•Includes UL/cUL Class 1, Division 2 Approvals.

•Model TT236-0600 is ATEX/IECEx Certified for Explosive Atmospheres.

II 3 G Ex ec IIC T4 Gc -40oC ≤Ta ≤+80oC

DEMKO 15 ATEX 1561X IECEx UL 18.0091X

Application

For additional information on

these devices and related topics,

please visit our web site at

www.acromag.com and download

our whitepaper 8500-904,

Introduction to Two-Wire

Transmitters.

This transmitter is designed for high-density mounting on T-type DIN rails. Units

may be mounted side-by-side on 12.5mm centers.

This model isolates a current or voltage input signal and can mate with grounded or

non-grounded sensors. It provides a 4-20mA output current linear with sensor

current or voltage.

The output signal is transmitted via a two-wire, 4-20mA current loop. The two-wire

current signal can be transmitted over long distances with high noise immunity. Its

inherent live-zero 4mA offset current offers built-in output fault detection, should

an output wire break. Extra connection screws at the output allow it to be

optionally wired for a “sourced” 4-20mA output configuration (see Optional Output

Wiring).

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Mechanical Dimensions

Units may be mounted to 35mm

“T” type DIN rail (35mm, type

EN50022), and side-by-side on 0.5-

inch centers.

WARNING: IEC Safety Standards

may require that this device be

mounted within an approved

metal enclosure or sub-system,

particularly for applications with

exposure to voltages greater than

or equal to 75VDC or 50VAC.

DIN Rail Mounting & Removal

Refer to the following figure for attaching and removing a unit from the DIN rail. A

spring loaded DIN clip is located on the input side bottom. The opposite rounded

edge at the bottom of the output side allows you to tilt the unit upward to lift it

from the rail while prying the spring clip back with a screwdriver. To attach the

module to T-type DIN rail, angle the top of the unit towards the rail and place the

top groove of the module over the upper lip of the DIN rail. Firmly push the unit

downward towards the rail until it snaps into place. To remove it from the DIN rail,

first separate the input terminal blocks from the bottom side of the module to

create a clearance to the DIN mounting area. You can use a screwdriver to pry the

pluggable terminals out of their sockets. Next, while holding the module in place

from above, insert a screwdriver into the lower path of the bottom of the module to

the DIN rail clip and use it as a lever to force the DIN rail spring clip down while

pulling the bottom of the module outward until it disengages from the rail. Then

simply lift it from the rail.

99.0

(3.90)

114.5

(4.51)

12.5

(0.50)

DIMENSIONS ARE IN MILLIMETERS (INCHES)

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ELECTRICAL CONNECTIONS

WARNING –EXPLOSION HAZARD –Do not disconnect equipment unless power has

been removed or the area is known to be non-hazardous.

WARNING –EXPLOSION HAZARD –Substitution of any components may impair

suitability for Class I, Division 2.

WARNING –EXPLOSION HAZARD –The area must be known to be non-hazardous

before servicing/replacing the unit and before installing.

Wire terminals can accommodate 14–26 AWG (2.08–0.13mm2) solid or stranded

wire with a minimum temperature rating of 85oC. Input wiring may be shielded or

unshielded type. Ideally, output wires should be twisted pair, or shielded twisted

pair. Terminals are pluggable and can be removed from their sockets by prying

outward from the top with a flat-head screwdriver blade. This model allows up to

±1V input signals to be wired to TB1, and up to ±10V input signals to be wired to

TB2. Only one input may drive the current output. Strip back wire insulation 0.25-

inch on each lead and insert the wire ends into the cage clamp connector of the

terminal block. Use a screwdriver to tighten the screw by turning it in a clockwise

direction to secure the wire (0.5-0.6Nm torque). Since common mode voltages can

exist on signal wiring, adequate wire insulation should be used and proper wiring

practices followed. As a rule, output wires are normally separated from input wiring

for safety, as well as for low noise pickup.

T-Rail

35mm DIN Rail

SCREWDRIVER SLOT

FOR REMOVAL FROM

"T" TYPE DIN RAIL

TILT MODULE UPWARD TOWARDS RAIL

AND HOOK ONTO UPPER LIP OF RAIL.

ROTATE MODULE DOWNWARD TO

ENGAGE SPRING CLIP ONTO LOWER

LIP OF RAIL.

TOP

BOTTOM

(INPUT SIDE)

(OUTPUT SIDE)

TT2XX MODULE DIN RAIL MOUNTING AND REMOVAL

SPRING CLIP

USE SCREWDRIVER TO REMOVE

MODULE FROM RAIL AS SHOWN

TT2XX MODULE

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Important –End Stops: For hazardous location installations (Class I, Division

2 or ATEX/IECEx Zone 2) it must use two end stops (Acromag 1027-222) to

secure the module(s) to the DIN rail (not shown).

Input Connections

Sensor wires are wired directly to transmitter input terminals at the bottom of the

module (the spring-loaded DIN clip side), as shown in the connection drawing

below. Observe proper polarity when making input connections.

•Transmitter input signal is isolated from output.

•DC Current is wired to the upper terminal blocks (TB1).

•DC Voltage is wired to the lower terminal blocks (TB2).

•Inputs are polarized “+” and “-“. The positive input is on the left and

labeled “+”, and the negative input is to its right. Observe proper polarity.

See connection figure below.

•Only one input, current or voltage, may drive the output at one time.

INPUT

TERMINALS

INPUT SIDE OUTPUT SIDE

MODEL TT236-0600

TB1

TB2

BOTTOM VIEW

(INPUT SIDE)

DIN RAIL SPRING CLIP

DC CURRENT

DC VOLTAGE

(2-WIRE ONLY)

WIRE CURRENT TO TB1

MODEL TT236-0600 INPUT SENSOR WIRING

OPT SHLD GND

INPUT

TERMINALS

TB1

TB2

FRONT

DC CURRENT ONLY

DC VOLTAGE ONLY

SHIELDED CABLE

CURRENT

(mA)

SHIELDED CABLE

VOLTAGE

(Volts) -

V V

WIRE VOLTAGE TO TB2

INPUTS SHARE COMMON AND ARE NOT

ONLY ONE INPUT, CURRENT OR VOLTAGE,

MAY DRIVE THE OUTPUT AT ONE TIME.

INPUTS ARE ISOLATED FROM THE OUTPUT.

ISOLATED FROM EACH OTHER.

OPT SHLD GND

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Output/Power Connections

This transmitter has an ANSI/ISA Type 2 output in which the unit’s power and

output signal share the same two leads, and the transmitter output has a “floating”

connection with respect to earth ground. Connect a DC power supply and load in

series in the two-wire loop as shown in the drawing below.

•Output connections are not polarized. The output + and –designations are for

reference only with current normally input to Output+ and returned via Output-

(current sinking).

•Loop supply voltage should be from 12-32V DC with the minimum voltage level

adjusted to supply over-range current to the load, plus 11V MIN across the

transmitter, plus any transmission line drop.

•Variation in power supply voltage between the minimum required, and 32V

maximum, has negligible effect on transmitter accuracy.

•Variation in load resistance has negligible effect on output accuracy, as long as

the loop supply voltage is set accordingly.

•Note the traditional placement of earth ground in the current loop. The

transmitter output varies off this ground by the voltage drop in the load

resistance and lead-wire.

The traditional loop-powered “sinking” output connections are shown above.

Shielded twisted-pair wiring is often used at the output to connect the longest

distance between the field transmitter and the remote receiver as shown. The

output of this transmitter fluctuates relative to earth ground by the voltage drop in

the load and connection wire. This makes it flexible in the way it connects to

various “Receiver” devices.

INPUT SIDE OUTPUT SIDE

MODEL TT2XX-0600

MODEL TT2XX-0600 OUTPUT/POWER WIRING

IDC SUPPLY

(12-32V)

EARTH

GROUND

RLOAD

THIS TRANSMITTER IS CURRENT LOOP POWERED

4-20mA

OUTPUT

TERMINALS

(UPPER LEVEL)

OPT "C" TERMINALS

(SEE OPT TB4 WIRING)

ARE COMMON

NOTE: OUTPUT TERMINALS ARE NOT POLARIZED AND

PLUS & MINUS LABELS ARE FOR REFERENCE ONLY.

OPTIONAL WIRING TERMINALS C ARE HELD IN

COMMON AND USED FOR "SOURCING" LOOP WIRING.

SEE OPTIONAL OUTPUT WIRING DIAGRAM.

TB3

TB4

TOP VIEW

(OUTPUT SIDE)

65 TWISTED PAIR

7 8 87

TRADITIONAL LOOP-POWERED "SINKING OUTPUT" CONNECTIONS

TB3 SHIELDED

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Output/Power

Connections…

In most installations, the loop power supply will be local to either the transmitter,

or local to the remote receiver. Common receiver devices include the input channel

of a Programmable Logic Controller (PLC), a Distributed Control System (DCS), or a

panel meter. Some receivers already provide excitation for the transmitter loop

and these are referred to as “sourcing inputs”. Other receivers that do not provide

the excitation are referred to as “sinking” inputs, and these will require that a

separate power supply connect within the loop. These types of receivers are

depicted below:

WARNING: For compliance to applicable safety and performance standards,

the use of twisted pair output wiring is recommended. Failure to adhere to

sound wiring and grounding practices as instructed may compromise safety,

performance, and possibly damage the unit.

TIP - Ripple & Noise: Power supply ripple at 60Hz/120Hz is normally reduced at the

load by the transmitter, but additional filtering at the load can reduce this ripple

further. For large 60Hz supply ripple, connect an external 1uF or larger capacitor

directly across the load to reduce excessive ripple. For sensitive applications with

high-speed acquisition at the load, high frequency noise may be reduced

significantly by placing a 0.1uF capacitor directly across the load, as close to the load

as possible.

TIP - Inductive Loads: If the two-wire current loop includes a highly inductive load

(such as an I/P current-to-pressure transducer), this may reduce output stability. In

this case, place a 0.1uF capacitor directly across the inductive load and this will

typically cure the problem.

INPUT SIDE OUTPUT SIDE

MODEL TT2XX-0600

MODEL TT2XX-0600 OUTPUT WIRING

OUTPUT

TERMINALS

COMMON CC

TB3

TB4

TOP VIEW

(OUTPUT SIDE)

"SINKING OUTPUT" CONNECTIONS WITH

LOOP+

LOOP-

TB4

TB3

TWISTED PAIR

TERMINALS

POWER LOCAL TO THE RECEIVER

The 24V DC Excitation is

Provided by the Card

RCV

DCS/PLC SINKING

24VDC

Two-Wire Output Connections to the Input Card of a Distributed Control

System or Programmable Logic Controller.

24VDC POWER SUPPLY

COMMON TWO-WIRE TRANSMITTER CONNECTION TO "SOURCING" AND "SINKING" INPUT RECEIVERS

INPUT CARD

RCV

DCS/PLC SOURCING

24VDC

INPUT CARD

SOURCING INPUT RECEIVER SINKING INPUT RECEIVER

The 24V DC Excitation is Provided

by a Separate Power Supply

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Output/Power

Connections…

This model includes two extra terminal connections at TB4 marked “C” which

provide a convenient wiring point for a “sourcing” wiring variation as shown below.

Internally, these two terminals are connected in common with each other and do

not connect to the internal circuit. Use of these terminals in your wiring scheme

allows you to connect external power local to the transmitter and form a “sourcing”

entity from this “sinking” output as shown.

Earth Ground Connections

The unit housing is plastic and does not require an earth ground connection, except

where the optional input cable shield is terminated on the unit. In this way, the

input cable shield connection is shunted to the earth ground applied at the “G”

terminal via an internal isolation capacitor. Internal circuitry is electrically isolated

from this earth ground connection. If the transmitter is mounted in a metal

housing, an earth ground wire connection to the metal housing’s ground terminal

(green screw) is usually required using suitable wire per applicable codes. See the

Electrical Connections Drawing for Output/Power connections and note the

traditional position of earth ground for the two-wire output current loop. Earth

ground is normally applied at the output loop power minus terminal and in common

with the loop load or loop receiver minus. The Type II transmitter output terminals

have a floating connection relative to earth ground and their potential varies with

the voltage drop in the load and connection wire.

•Respect the traditional position of earth ground in a two-wire current loop and

avoid inadvertent connections to earth ground at other points, which would

drive ground loops and negatively affect operation.

•A USB isolator is recommended when configuring or calibrating a unit to avoid

the ground loop that occurs if your input signal is also earth grounded (A PC

commonly earth grounds its USB port and this makes contact with both the USB

signal and shield ground which is held in common to the input circuit ground of

this transmitter).

INPUT SIDE OUTPUT SIDE

AND MODEL TT2XX-0600

MODEL TT2XX-0600 OPTIONAL OUTPUT WIRING

OUTPUT

TERMINALS

COMMON CC

TB3

TB4

TOP VIEW

(OUTPUT SIDE)

OPTIONAL "SOURCING OUTPUT" CONNECTIONS WITH

LOCAL EXTERNAL 3-WIRE POWER FORM

A SOURCING OUTPUT RELATIVE TO THE

LOOP+

LOOP-

OPTIONAL COMMON CONNECTIONS WITH

TB4

TB3

24VDC +

LOCAL 24VDC

POWER SUPPLY

LOAD

REMOTE RECEIVER/LOAD

TWISTED PAIR

TERMINALS

POWER LOCAL TO TRANSMITTER

REMOTE SINKING LOAD.

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