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16

Model TA502A

NOTE:

The relays (

A1

&

A2

) and open collector outputs are active and will trip

during the Card Test, unless the user-specified option disabling these
outputs is selected during the Setup Mode. This should be treated as a
functional test of a Zero Two System.

3.8 Beam Block Feature

Some IR combustible gas detectors, such as the General Monitors Model IR5500
and IR400, output a 2 mA signal when the optical path is blocked. When the TA502A,
in standard mode, receives a signal between 1.8 and 2.5 mA, the display indicates

bb

to acknowledge this condition.

3.9 Operating Modes

The TA502A has several different operating modes to allow proper operation with
different General Monitors' field devices. The standard mode (“

std

”) allows operation

with devices such as the Model IR400 or IR5500, which provide the standard 0 – 20
mA output. “

Obs

” mode is for Gassonic Observer and Observer-H ultrasonic gas leak

detectors (UGLD). “

Sur

” mode is for the Gassonic Surveyor UGLD. The TS400 mode

(“

400

”) allows operation with the full-range of Model TS400 product. The TS420

mode (“

420

”) allows operation with the Model TS420 Oxygen Deficiency Detector.

During startup mode, both the TS400 and TS420 will output 3.6mA. The TA502A will
display “SU” at this time. During calibration mode both models will output 3.75mA.
The TA502A will display “CA” at this time. If a fault occurs at the detector, the
TA502A will display “F4”. See Section 3.10 for a description of Fault diagnostics.

For TS420 operating modes, alarms occur when the O

2

concentration falls

below

the

alarm set points. Tables below summarize the operating modes.

Input from

field device

Standard

“std”

TS400

“400”

TS420

“420”

0 mA

F4

F4

F4

1.5 mA

CA

F4

F4

3.5 mA

-3

F4

F4

3.6 mA

-2

SU

SU

3.75 mA

-1

CA

CA

4 mA

0

0

0

8 mA

25% FS

25% FS

25% FS

12 mA

50% FS

50% FS

50% FS

16 mA

75% FS

75% FS

75% FS

20 mA

100% FS

100% FS

100% FS

22 mA

100% FS

100% FS

100% FS

Alarms

Input above set point

Input above set point

Input below set point

Table 11: TA502A Operating Modes

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Содержание TA502A

Страница 1: ...his document may be used and disseminated only for the purposes and to the extent specifically authorized in writing by General Monitors Instruction Manual 09 12 General Monitors reserves the right to change published specifications and designs without prior notice MANTA502A Part No MANTA502A Revision H 09 12 ...

Страница 2: ...ii Model TA502A This page is intentionally left blank ...

Страница 3: ...products which have been modified or repaired without General Monitors approval or which have been subjected to neglect accident improper installation or application or on which the original identification marks have been removed or altered Except for the express warranty stated above General Monitors disclaims all warranties with regard to the products sold including all implied warranties of mer...

Страница 4: ...s Accessories connected to field and signaling devices After the initial application of power and any factory specified warm up period to the safety system verify that all signal outputs to and from devices and modules are within the manufacturers specifications Initial calibration calibration checking and testing should be performed per the manufacturers recommendations and instructions Proper sy...

Страница 5: ...ications re calibration or repair replacement of the suspect device s should be performed as necessary Calibration intervals should be independently established through a documented procedure including a calibration log maintained by plant personnel or third party testing services ...

Страница 6: ...INTRODUCTION 2 1 1 General Description 2 1 2 Features Benefits 3 1 3 Applications 4 2 0 INSTALLATION 5 2 1 Upon Receipt of Equipment 5 2 2 Control Module Installation 5 2 3 Rear Terminal Connections 6 2 3 1 Rear Terminal Designations 7 2 4 Applying Power 12 3 0 OPERATION 13 3 1 General Maintenance 13 3 2 Electrical Inputs 13 3 3 Electrical Outputs 13 3 4 Accepting Alarm Conditions 14 3 5 Resetting...

Страница 7: ...m Options 26 4 4 7 Fault Inhibit Option 28 4 4 8 Card Test Options 29 4 4 9 Password Option 30 4 5 Inhibit Mode Description 31 5 0 APPENDIX 33 5 1 Engineering Technical Drawings 33 5 1 1 Reference Drawing 11271 Outline Terminal Connections 33 5 1 2 Reference Drawing 11270 1 Final Assembly 34 5 2 Specifications 35 5 2 1 System Specifications 35 5 2 2 Mechanical Specifications 35 5 2 3 Electrical Sp...

Страница 8: ...Figure 18 Analog Signal Connections 11 Figure 19 Power Connections Rear Chassis 12 Figure 20 Front Panel Display 19 Figure 21 Entering the Setup Setup Check Modes 22 Figure 22 Entering the Password 23 Figure 23 Entering the Inhibit Mode 23 Figure 24 Display Multiplier Option 24 Figure 25 A2 Energized De Energized Alarm Option 25 Figure 26 A2 Latching Non Latching Alarm Option 25 Figure 27 A2 Alarm...

Страница 9: ...ble 5 Fault Alarm 8 Table 6 Un accept output 9 Table 7 Calibration Output 9 Table 8 Field Transmitter Connections 9 Table 9 Card Test Input 11 Table 10 Analog Signal Output 11 Table 11 TA502A Operating Modes 16 Table 12 TA502A Ultrasonic Gas leak Detectors Operating Modes 17 Table 13 Setup Mode Selection Table 21 Table 14 Cable Lengths 35 ...

Страница 10: ...tiple 16 channel chassis may be connected to each other to form larger systems Figure 1 Rack Panel Mounting In installations where two or more module types are to be mixed in the same chassis ensure that the individual coding strips match the channel application The coding strips are pre configured at the factory and the male portion is already on each module The female portion if un mounted must ...

Страница 11: ...ference EMI However they should not be mounted in close proximity to radio transmitters or similar equipment Wire Field Devices All wire connections to the Model TA502A are made to the terminal block located at the rear of the chassis The terminal block accepts 16 AWG to 20 AWG stranded or solid core wire 14 AWG wire may be used if it is properly stripped as shown in Figure 4 Figure 4 Wire Strip L...

Страница 12: ...tug on the wire to ensure it is securely fastened Rear Terminal Designations For the rear terminal designations refer to Figure 5 below Figure 5 Rear Terminal Designations Figure 6 illustrates the inter connections for the TA502A various types of Field Transmitters Figure 6 TA502A Inter Connections 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 z d TA502A 4 20 mA Trans 24V COM 24Vdc 4 20 mA TA502A 2 ...

Страница 13: ...ve loads can generate voltage spikes in excess of 100 volts Spikes of this magnitude may cause false alarms and contact damage Figure 7 shows the recommended relay protection circuits for AC and DC loads respectively Figure 7 Relay Protection Circuits The electrical rating for all open collector outputs is 100 mA 35 VDC Figure 8 illustrates some typical open collector external circuits Figure 8 Ex...

Страница 14: ... the number and type of field devices NOTE If the application of power does not turn the Model TA502A ON check Fuse F1 Figure 9 Power Connections Rear Chassis Figure 9 indicates where the power connections for the chassis are made NOTE The instrument is now ready to operate Please consult the manual for more information on the instrument s many features If you have any problems in the set up or te...

Страница 15: ... Figure 10 is a single channel Generic Trip Amplifier designed for use in Zero Two Series Gas and Flame Detection Systems This Module connects to a field mounted 4 20 mA transmitter The Model TA502A is electrically and physically compatible with the other gas detection flame detection and system modules in the Zero Two Series It is distinguished from the other modules by its gray border and TA502A...

Страница 16: ...or range display multiplier etc These parameters are viewed on the display during the Setup Mode Password Option Prevents unauthorized alteration of the setup parameters can be disabled Setup Check Mode Allows the user to view the parameters that have been set by the factory and or an operator LED Test Tests the integrity of each front panel LED and each segment of the digital display Card Test Te...

Страница 17: ... 3 Applications The General Monitors Model TA502A is a Generic Trip Amplifier designed for use with the Zero Two Series Below is a partial list of applications Chemical plants De sulfurization facilities Drilling platforms and rigs Gas and oil production platforms Gas collection facilities Oil well logging operations Refineries Sewage disposal and treatment plants Sulfur recovery plants ...

Страница 18: ... a complete assessment is necessary upon initial installation and start up to ensure system integrity 2 2 Control Module Installation A rack or panel mounted chassis will be required when installing any Zero Two Series Module These chassis should be mounted in non hazardous weather protected locations and should be subjected to minimal shock and vibrations The rack and panel mounted chassis are av...

Страница 19: ...tters or similar equipment 2 3 Rear Terminal Connections All wire connections to the Model TA502A are made to the terminal block located at the rear of the chassis The terminal block accepts 16 AWG to 20 AWG stranded or solid core wire 14 AWG wire may be used if it is properly stripped as shown in Figure 12 Figure 12 Wire Strip Length WARNING Contact with PC Board components should be avoided in o...

Страница 20: ... 2 6d Relay Contact A2 3 8d Relay Contact A2 4 10d Relay Contact A2 C2 12d Relay Common 3 4 A2 OC 14d Open Collector OC LA2 24z OC Logic for A2 LED Table 1 A2 Alarm The A2 alarm outputs are DPDT Double Pole Double Throw relay contacts one open collector output A2 OC that follows the logic of the relays and one open collector output LA2 that follows the blinking pattern of the front panel LED The A...

Страница 21: ...elays and one open collector output LA1 that follows the blinking pattern of the front panel LED The A1 C1 designation is common for A1 1 A1 2 The A1 C2 designation is common for A1 3 A1 4 The normally open NO and normally closed NC contacts depend on a user selectable option see Section 4 0 The table below refers to the proper open and closed A1 alarm relay contacts while the unit is on power Use...

Страница 22: ...enerate voltage spikes in excess of 100 volts Spikes of this magnitude may cause false alarms and contact damage Figure 14 shows recommended relay protection circuits for AC and DC loads respectively Figure 14 Relay Protection for AC and DC Loads The terminal designation for the Un accept output is Label Term Description UA 8d Open Collector Output Table 6 Un accept output The terminal designation...

Страница 23: ...various types of Field Transmitters Figure 15 TA502A Inter Connections The electrical rating for all open collector outputs is 100 mA 35 VDC Figure 16 illustrates some typical open collector external circuits Figure 16 External Test Circuits for Open Collectors 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 z d TA502A 4 20 mA Trans 24V COM 24Vdc 4 20 mA TA502A 2 Wire Trans With External Power Supply ...

Страница 24: ...ess and hold the switch for as long as the test time is to be run minimum runtime is 3 or 10 seconds software selectable Figure 17 is a block diagram that shows the switch connections for the Card Test feature Figure 17 Card Test Switch Wiring The terminal designations for the Analog Output Signal are Label Term Description AO 20d Analog Signal plus AO 22d Analog Signal minus Table 10 Analog Signa...

Страница 25: ... Chassis 2 4 Applying Power Zero Two Series Modules do not have an ON OFF power switch Each module in the Zero Two Series operates from 24 VDC Power requirements will vary according to the number and type of modules in the system as well as the number and type of field devices NOTE If the application of power does not turn the Model TA502A ON check Fuse F1 ...

Страница 26: ...perational If the Password is disabled periodic checks of the setup parameters should be performed 3 2 Electrical Inputs There are two electrical inputs to the Model TA502A They are the Field Device and the Card Test input Both of these input connections field device and card test are made to the rear terminal block see Section 2 0 for more detailed installation information The Field Transmitter i...

Страница 27: ...alarm condition occurs the front panel LED and open collector associated with that alarm LA1 or LA2 will flash In addition the associated alarm outputs and the unaccepted outputs TA502A UA open collector FM002A UA relay will activate unless they are already activated The flashing front panel alarm LED and rear terminal open collector indicate that a new alarm has been activated New alarms should b...

Страница 28: ...or more seconds all of the LED s and LED segments in the digital display will illuminate for as long as the operator presses the button This is called the LED Test The LED test cannot be performed while the unit is in alarm or fault or during a Card Test 3 6 CAL Open Collector There is an open collector that will energize anytime the Field Device is placed in the Calibration Mode This open collect...

Страница 29: ...r H ultrasonic gas leak detectors UGLD Sur mode is for the Gassonic Surveyor UGLD The TS400 mode 400 allows operation with the full range of Model TS400 product The TS420 mode 420 allows operation with the Model TS420 Oxygen Deficiency Detector During startup mode both the TS400 and TS420 will output 3 6mA The TA502A will display SU at this time During calibration mode both models will output 3 75...

Страница 30: ...nitial power up of the unit If this fault occurs remove and reapply power to the unit If the fault continues to occur replace the unit and consult your GM Representative or the factory F4 Field device error Make sure the wires running to and from the Trip Amplifier and the Field Device are connected properly Check for opens and shorts across the field wiring Make sure the analog signal is returned...

Страница 31: ...LED will stop flashing and remain ON until the fault is corrected 3 11 Communications By using a General Monitors Model CC02A Communications Module as a communications bridge the Model TA502A can communicate to a PLC or DCS system using a RS 485 Modbus interface This allows remote access to data such as gas concentration at the remote gas detector fault and alarm status and operating mode It also ...

Страница 32: ... fault diagnostic codes and setup parameters The status indicators provide the user with an indication of the current mode of operation alarm fault ready calibration and setup The Mode Select switch provides the user access to the Setup Check Setup and Inhibit modes Figure 20 Front Panel Display 4 2 Setup Check Setup Modes The Setup Check Mode allows the operator to view the selected options for t...

Страница 33: ...election procedure is the same for most of the options Pressing the Mode Select switch toggles the available choices When the display has indicated a choice for five consecutive seconds without the operator pressing the Mode Select switch the Setup routine will accept that selection and move on to the next option available These modes will activate the SETUP LED the CAL OC output and the CALBUSS N...

Страница 34: ...the Display Multiplier X 1 x 10 or x 100 A2 Alarm Set the Energized En De Energized dE Option Set the Latching LA Non Latching nL Option Set the High alarm set point A1 Alarm Set the Energized En De Energized dE Option Set the Latching LA Non Latching nL Option Set the Low alarm set point Fault Inhibit Set the fault to Activate Ac or not nA during Inhibit Mode Card Test The Display will indicate c...

Страница 35: ...se the Mode Select switch and the unit will enter the Setup Mode Figure 21 Figure 21 Entering the Setup Setup Check Modes 4 4 1 Entering the Password This option applies to the Setup Mode only If the password option is enabled the right digit of the display will be blank and a will appear in the left digit on the display Figure 22 Press the Mode Select switch until the correct number is displayed ...

Страница 36: ...onds Figure 23 Pressing the Mode Select switch while In is displayed will cause the unit to enter the Inhibit mode by inhibiting the alarm outputs After the Model TA502A has entered the Inhibit Mode pressing the Mode Select switch causes the unit to return to normal operation see Section 4 4 If it is desired to enter the Setup Mode do not press the Mode Select switch for the five seconds that In i...

Страница 37: ... The factory default is Std Mode NOTE If the Sensor Range is changed the alarm set points A1 A2 must be reset 4 4 4 Display Multiplier Option Next the user will select the Display Multiplier Figure 24 The display will indicate dI and the x 1 x 10 or x 100 LED will be lit Press the Mode Select Switch until the desired LED is illuminated The factory default for this selection is x 1 Figure 24 Displa...

Страница 38: ... on the front panel will be flashing while the Latching Non latching option is displayed Figure 26 The display will indicate the current selection nL or LA Latching is the factory default for this selection The last A2 alarm option to appear on the display will be the alarm set point trip level The A2 set point cannot be set lower than the current A1 set point To accomplish this the operator must ...

Страница 39: ...nal option That is the A2 alarm relay delay The display will indicate the A2 relay delay by the letters dL followed by the current delay time in seconds The factory default value is 0 seconds Pressing the Mode Select switch will increase the delay time by 10 seconds The maximum value allowed is 600 seconds and pressing the switch again will set the delay to 0 seconds 4 4 6 A1 Alarm Options Next th...

Страница 40: ...Figure 29 A1 Latching Non Latching Alarm Option The last A1 alarm option to appear on the display will be the alarm set point trip level The A1 set point cannot be set higher than the current A2 set point If this level is reached or exceeded the A1 alarm outputs will activate The display will indicate the current A1 alarm set point Figure 30 Press the Mode Select switch repeatedly until the desire...

Страница 41: ...n After the A1 alarm options have been selected the user will select the Fault Inhibit option The FAULT LED on the front panel will be flashing while the display indicates Ac or nA Figure 31 An Ac selection specifies that the Model TA502A will activate the Fault circuit while the unit is in the Inhibit Mode A nA selection specifies that the Model TA502A will not activate its Fault circuit when the...

Страница 42: ...ll indicate ct for about five seconds Figure 32 Figure 32 Entering Card Test Options Following ct the ramp up time 1 3 or 10 during the card test Figure 33 will be displayed 3 as the factory default for this selection Figure 33 Card Test Ramp Time 1 3 10 Next the display will indicate the alarm output option during a Card Test as either Ac active or nA not active Figure 34 Not Active is the factor...

Страница 43: ...n case of a malfunction or gas condition during normal operation 4 4 9 Password Option Once the Card Test options have been selected the user will either enable or disable the password option Figure 35 The display will indicate either PE for enabled or Pd for disabled Password Disabled is the factory default for this selection Figure 35 Password Enabled Disabled Option ...

Страница 44: ...de This allows the operator to view the newly selected options The unit will return to normal operation after completing the Setup Mode and the Setup Check Mode 4 5 Inhibit Mode Description Whenever the Inhibit Mode is entered see Section 5 2 the A1 and A2 rear terminal alarm outputs are inhibited The front panel A1 and A2 LED s will still function normally If the password option is disabled or af...

Страница 45: ...n the field device input level will be displayed for 5 seconds This sequence will repeat for as long as the unit is in the Inhibit mode The Inhibit Mode is provided so that the operation of the Model TA502A can be verified without tripping external devices that are connected to the A1 and A2 outputs This type of verification usually occurs during Initial Start Up and or Commissioning NOTE The Cali...

Страница 46: ...ACT 2 3 DE ENERGIZED CONTACT 2 3 CONTACT 1 4 A2 C2 COMMON FOR A2 3 A2 4 A2 C1 COMMON FOR A2 1 A2 2 CONTACT 1 4 CONTACT 2 3 DE ENERGIZED CONTACT 2 3 CONTACT 1 4 ENERGIZED RELAY STATE NORMALLY OPEN NORMALLY CLOSED RELAY CONTACTS TA502A 24 VDC 2W CH MAX CONTACTS 117 VAC 4 AMP OR 30 VDC 3 AMP RES GENERAL MONITORS MOUNT OUTSIDE HAZARDOUS AREA NE PAS PLACER DANS UN EMPLACEMENT DANGEREUX REAR CONNECTOR T...

Страница 47: ...34 Model TA502A 5 1 2 Reference Drawing 11270 1 Final Assembly Figure 38 Final Assembly Drawing ...

Страница 48: ...inches 251 mm Height 6 8 inches 173 mm Width 1 0 inch 25 mm 5 2 3 Electrical Specifications Input Power Requirement 20 to 36Vdc 300 mA max 24Vdc 7W nominal Electrical Classification The Model TA502A is designed for use in non hazardous environments Relay Contact Rating 4A 250Vac 3A 30Vdc resistive max DPDT for A1 A2 SPDT for Fault 4A 30V rms 42 4V PK Open Collector Rating 100 mA 35 VDC for A1 A2 F...

Страница 49: ...component modules as manufactured by General Monitors Lake Forest California U S A or General Monitors Galway Ireland 5 2 5 2 TA502A Trip Amplifier Module The trip amplifier module has an interface panel a mode select switch and the following indications 2 discrete alarm threshold level indicators Fault or malfunction indicator Ready indicator Calibration mode indicator Setup mode indicator and 3 ...

Страница 50: ...N LATCH WARN A1 DE ENERGIZED 6 NON LATCH AL A2 NON LATCH WARN A1 ENERGIZED 7 NON LATCH AL A2 LATCH WARN A1 DE ENERGIZED 8 NON LATCH AL A2 LATCH WARN A1 ENERGIZED C MODE DISPLAY RANGE 01 0 2 STANDARD MODE 02 0 5 STANDARD MODE 03 0 10 STANDARD MODE 04 0 20 STANDARD MODE 05 0 25 STANDARD MODE 06 0 50 STANDARD MODE 07 Std 0 100 STANDARD MODE 08 0 2 TS400 MODE 09 0 5 TS400 MODE 10 0 10 TS400 MODE 11 0 ...

Страница 51: ...2A E CARD TEST RAMP TIME 1 Std INHIBITED RLYS 3 SEC RAMP TIME 2 INHIBITED RLYS 10 SEC RAMP TIME 3 ACTIVATE RLYS 3 SEC RAMP TIME 4 ACTIVATE RLYS 10 SEC RAMP TIME 5 INHIBITED RLYS 1 SEC RAMP 6 ACTIVATE RLYS 1 SEC RAMP ...

Страница 52: ...ccording to WEEE regulations For further General Monitors product WEEE disposal information please visit www generalmonitors com faqs All other countries or states please dispose of in accordance with existing federal state and local environmental control regulations ADDENDUM Product Disposal Considerations ...

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