Acromag TT231-0600 Скачать руководство пользователя страница 39 | Manualshive

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Acromag TT231-0600 Скачать руководство пользователя страница 39

Model TT231-0600

Two-Wire RTD Transmitter w/USB

Acromag, Inc. Tel: 248-295-0880

- 39 - http://www.acromag.com

- 39 -

http://www.acromag.com

USB Interface…

IMPORTANT – USB Isolation is recommended:

The transmitter circuit ground is

connected in common to USB power/signal ground and shield ground.  It will make
connection to earth ground when directly connected to the USB port of a Personal
Computer without the use of an isolator.  Failure to connect without isolation would
force a potential difference between earth ground at the PC and the earth ground
normally applied in a properly grounded two-wire current loop.  This drives an
inadvertent ground loop that can interfere with operation and could damage the
unit.  For this reason, USB isolation is strongly recommended when connecting to a
PC. Otherwise, in the absence of USB isolation, a battery powered laptop could be
used to connect to the unit, as the laptop does not normally connect to earth
ground.

Enclosure & Physical

General purpose plastic enclosure for mounting on 35mm “T-type” DIN rail.

Dimensions

: Width = 12.5mm (0.5 inches), Length = 114.5mm (4.51 inches), Depth =

99.0mm (3.90 inches). Refer to Mechanical Dimensions drawing.

I/O Connectors:

Removable plug-in type terminal blocks rated for 12A/250V; AWG

#26-12, stranded or solid copper wire.

Program Connector:

USB Mini B-type, 5-pin. See USB Interface.

Case Material:

Self-extinguishing polyamide, UL94 V-0 rated, color light gray.

General purpose NEMA Type 1 enclosure.

Circuit Board:

Military grade fire-retardant epoxy glass per IPC-4101/98 with humi-

seal conformal coating.

DIN-Rail Mounting:

Unit is normally mounted to 35x15mm, T-type DIN rails. Refer

to the DIN Rail Mounting & Removal section for more details.

Shipping Weight:

0.5 pounds (0.22 Kg) packed.

Environmental

These limits represent the minimum requirements of the applicable standard, but this
product has typically been tested to comply with higher standards in some cases.

Operating Temperature:

-40



C to +80



C (-40



F to +176



F).

Storage Temperature:

-40



C to +85



C (-40



F to +185



F).

Relative Humidity:

5 to 95%, non-condensing.

Isolation:

Input & output are not isolated from each other for this model, as this

model is intended to interface with insulated or non-grounded input sensors.

Installation Category:

Suitable for installation in a Pollution Degree 2 environment

with an Installation Category (Over-voltage Category) II rating per IEC 1010-1 (1990).

Operating Shock & Vibration Immunity:

Sinusoidal Vibration: 5G, 5-500 Hz, in 3 axis

at 2 hours/axis per IEC60068-2-6. Random Vibration: 5G-rms, 5-500 Hz, in 3 axis at 2
hours/axis per IEC60068-2-64. Mechanical Shock: 30g at 11ms half-sine shock pulses
and 50g at 3ms half-sine shock pulses in each direction along 3 axis (18 shocks), per
IEC60068-2-27.

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Содержание TT231-0600

Страница 1: ...put Two Wire Transmitter USER S MANUAL ACROMAG INCORPORATED Tel 248 295 0880 30765 South Wixom Road Fax 248 624 9234 Wixom MI 48393 7037 U S A email sales acromag com Copyright 2012 Acromag Inc Printe...

Страница 2: ...NS 6 Sensor Input Connections 7 Output Power Connections 8 Earth Ground Connections 10 USB Connections 11 CONFIGURATION SOFTWARE 12 Quick Overview 12 TECHNICAL REFERENCE OPERATION STEP BY STEP 14 Conn...

Страница 3: ...e 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 impo...

Страница 4: ...wiring Connects to two three or four wire sensors Lead wire compensation 3 wire Up or down scale lead break burnout detection Adjustable output error alarm levels outside of operating range Convenient...

Страница 5: ...o 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 o...

Страница 6: ...eir sockets by prying outward from the top with a screwdriver blade 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...

Страница 7: ...u must connect a short copper jumper wire between input terminals 3 and 4 at the transmitter see below Alternately if you want to compensate for sensor lead wire resistance do not include this jumper...

Страница 8: ...nt loop The transmitter output floats off this ground by the voltage drop in the load resistance and lead wire This is very important when making USB Connections and will drive the need for USB isolat...

Страница 9: ...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 acqui...

Страница 10: ...urrent loop The Type II transmitter output terminals have a floating connection relative to earth ground Earth ground is normally applied at the output loop power minus terminal and in common with the...

Страница 11: ...so held in common with the USB ground and shield ground The potential of the transmitter s current output pin output minus relative to earth ground will vary according to the load current and load res...

Страница 12: ...this manual Device Connect First Connect to Unit Here Scan for connected transmitters and open communications with them Display the model serial number Product Name Manufacturer and Serial Number of...

Страница 13: ...that the output should go if a sensor lead breaks Then click the Submit Break Detection button to write your selection to transmitter memory Then a lead break or sensor burnout fault will send the out...

Страница 14: ...uld connect a current meter in series in this loop to read the loop current directly not recommended Alternatively you could simply connect a voltmeter across a series connected precision load resisto...

Страница 15: ...to connect to the selected device If your transmitter was already connected via USB when you booted this software your screen will look more like the screen at right where the software has already ini...

Страница 16: ...mber fields At this point the connected transmitter is ready for configuration and the appropriate configuration fields become active and await your input If you want to see how the connected unit is...

Страница 17: ...d be wired to input terminal 4 and the other end of this lead connects to the minus terminal at the sensor In both cases this third wire connection serves as the return path for the excitation current...

Страница 18: ...zero temperature For example the Resistance Input Type will use the 0 C pedestal resistor which is 98 8 An equivalent sensor input resistance actually drives the differential signal measurement to 0V...

Страница 19: ...il you complete the calibration sequence that is initiated by clicking the Start Calibration button You can use the Get Config Calibration control button to read the current configuration of the unit...

Страница 20: ...type the measured current in milliamps into the Measured Current Output field Then click the Go To Step 2 button 2 After clicking Go To Step 2 the following message will be displayed Now the unit need...

Страница 21: ...note that it will be closer to the full scale output than it was in step 2 as linearization is ON Type the measured output current in milliamps into the Measured Current Output field Then click the C...

Страница 22: ...calibration prompt messages Refer to the following table when using a resistance substitution box to drive the input zero and full scale signals This contains the resistance values for the two most c...

Страница 23: ...0 of span between units for the same digital setting and this will be reflected by differing values for Min and Max between units The Min Max limits of adjustment are calibrated at the factory CAUTION...

Страница 24: ...ion No Faults 1 IN Exceeds Positive Limit 2 IN Exceeds Negative Limit 3 IN Exceeds Positive Limit 4 IN Exceeds Negative Limit 5 IN Exceeds Positive Limit IN Exceeds Positive Limit 6 IN Exceeds Positiv...

Страница 25: ...orrupted A checksum error will also send the output current to 0 4mA below the lowest under scale threshold setting until reset via this control or by toggling loop power OFF ON A persistent checksum...

Страница 26: ...ro or increase your full scale value Step 1 Zero calibration Please set your input resistance to X Ohms Measure the corresponding output current and enter the measured value into the Measured Current...

Страница 27: ...rmal operation Setup involves selecting the input type Pt RTD or Resistance input wiring 2 wire 3 wire 4 wire the Pt RTD alpha coefficient the input range zero 50 C 0 C or 0 F the input range full sca...

Страница 28: ...s without making a separate measurement Refer to the block diagram to gain a better understanding of how this transmitter works A third sensor wire is used to compensate the sensor for the resistance...

Страница 29: ...nonlinear response over temperature that is approximated by a quadratic equation The linearity DAC uses positive feedback from the input signal to produce a system response that is also nearly quadrat...

Страница 30: ...cable to the transmitter Communication or power was interrupted while USB was connected and the configuration software was running Close the current connection with the software re scan the transmitte...

Страница 31: ...ue URV This is the Down scale alarm level and indicates the input signal exceeds the common mode range of the input This can also occur if the third sensor wire is missing 3 4 wire RTD a lead has brok...

Страница 32: ...ction or a small jumper wire between terminals 3 4 at the transmitter 2 wire connection You may have damaged the input PGA via a ground loop or incorrect wiring If you cannot get the output signal to...

Страница 33: ...cale verification The enclosure is not meant to be opened for access and can be damaged easily if snapped apart Thus it is highly recommended that a non functioning transmitter be returned to Acromag...

Страница 34: ...ansmitter USB Isolator USB Isolator Order USB ISOLATOR USB Signal Isolator USB A B Cable 4001 112 Instructions 8500 900 This kit contains a USB isolator and a 1M USB A B cable for connection to a PC T...

Страница 35: ...RTD 0 00385 C 3 wire 0 C to 200 C input 4 to 20mA output and upscale fault detection Recalibration of any model will require use of an TTC SIP configuration kit ordered separately see Accessories Mod...

Страница 36: ...put Filter Bandwidth 3dB at 700Hz typical normal mode filter Input Linearization Preset for input Additive to excitation current to accomplish linearization of Pt RTD inputs Correction is digitally ad...

Страница 37: ...oltage 30mA max The voltage level across the transmitter must not exceed 36V even with a shorted load The voltage level must be chosen to provide 20mA current to the load 0 020 R typical plus 8 6V min...

Страница 38: ...l Upscale fault level is 1 0mA above the selected over scale threshold typical The unit can be set for limits that comply with NAMUR NE43 recommendations USB Interface Includes a USB socket for tempor...

Страница 39: ...solid copper wire Program Connector USB Mini B type 5 pin See USB Interface Case Material Self extinguishing polyamide UL94 V 0 rated color light gray General purpose NEMA Type 1 enclosure Circuit Bo...

Страница 40: ...n Controlled GBGC Temperature TT231 0600 25 C 3 140 003 hrs 40 C 2 353 528 hrs Configuration Controls Software Configuration Only via USB This transmitter produces an analog output current proportiona...

Страница 41: ...Revision 01 JUNE 12 A BC KLK Initial Acromag release 26 JULY 13 B CAP ARP Added UL Mark to this model removed pending refer to ECN 13G017 for additional information Added note to USB connections draw...

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