Macurco TracXP TXP-C20 Instruction Manual
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Macurco TracXP TXP-C20 Instruction Manual

Dual channel controller
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TracXP™ TXP-C20
Dual Channel Controller
Instruction Manual
IMPORTANT: Read and understand contents of this manual prior to operation. Keep these user instructions for
reference.

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Summary of Contents for Macurco TracXP TXP-C20

  • Page 1 TracXP™ TXP-C20 Dual Channel Controller Instruction Manual IMPORTANT: Read and understand contents of this manual prior to operation. Keep these user instructions for reference.

  • Page 4: Table Of Contents

    Fault Alarm ....................Error! Bookmark not defined. Data From ......................Error! Bookmark not defined. Appendix A – Table of Figures ..........................39 Macurco Gas Detection Product limited warranty ..................... 41 Technical Support Contact Information ........................41 General Contact Information ............................41 REV –...

  • Page 5: Safety Information

    TXP-C20_Instruction_Manual_(Rev1.0) 1 Safety Information 1.1 Read Before Installation and Operation IMPORTANT AVERTISSEMENT: Lire attentivement les instructions avant de metre en marche. CAUTION: FOR SAFETY REASONS THIS EQUIPMENT MUST BE OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND UNDERSTAND INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING OR SERVICING. ATTENTION: POUR DES RAISONS DE SÉCURITÉ, CET ÉQUIPEMENT DOIT ÊTRE UTILISÉ, ENTRETENU ET RÉPARÉ...

  • Page 6: Warnings

    TXP-C20_Instruction_Manual_(Rev1.0) 1.2 WARNINGS Shock Hazard - Disconnect or turn off power before servicing this instrument. • • NEMA 4X wall mount models should be fitted with a locking mechanism after installation to prevent access to high voltages by unauthorized personnel (see Figure 5-1). •...
  • Page 7 TXP-C20_Instruction_Manual_(Rev1.0) 2 Introduction The TracXP TXP-C20 Two channel Controller is designed to display, and control alarm event switching for two sensor points. Sensor signals may be input as 4-20mA from transmitters, or, several signal-conditioning options (see section 3.1) are available to accept sensors directly. The TXP-C20 is equipped with three alarms per channel with features such as ON / OFF delays, latching relays and alarm Acknowledge.

  • Page 8: Key Features

    TXP-C20_Instruction_Manual_(Rev1.0) Figure 2-2 – TXP-C20 Display Board 2.1 Data Display Screens The TXP-C20 Controller offers three modes for displaying monitored data. Each are shown below in Figure 2-3. Figure 2-3 – Data Display Screens REV – 1.0 [34-2900-0207-5 ] P a g e...

  • Page 9: Optional Features

    TXP-C20_Instruction_Manual_(Rev1.0) 2.1.1 Main Data Screen The TXP-C20 Main Data screen shown at left in Figure 2-3 allows each channel to be viewed simultaneously. Engineering unit values and bar graph values are both displayed in real time. Arrows below the bars indicate alarm trip point values, making it easy to identify channels at or near alarm.

  • Page 10: Ambient Temperature

    TXP-C20_Instruction_Manual_(Rev1.0) Some applications may require 24VDC power in excess of that available from the TXP-C20’s integral AC power supply and thereby require an external AC/DC supply. NEC Class 2 FIFTY-WATT external supplies are available for Division 1 and Division potentially hazardous area installations and both also include a NEMA 4X weather rating. 2.4.2 Relays Two mechanicals (dry contact) Common Form C relays are standard and may be mapped to various alarm events as described in section 2.3.1.

  • Page 11: Installation Instructions

    TXP-C20_Instruction_Manual_(Rev1.0) 3 Installation Instructions Note: This manual will simply refer to the operation and installation of a TXP-C20. 3.1 Basic Operation The TXP-C20’s graphic LCD displays monitored data and with the 5-button keypad also serves as the system’s operator interface. All TXP-C20 configuration variables are entered with this operator interface using SETUP menus accessed by pressing EDIT from either data screen.
  • Page 12 TXP-C20_Instruction_Manual_(Rev1.0) Figure 3-1 – Menu Tree REV – 1.0 [34-2900-0207-5 ] 10 | P a g e...

  • Page 13: Mounting The Enclosure

    TXP-C20_Instruction_Manual_(Rev1.0) 3.3 Changing Menu Variables using the Keypad Upon entering a menu, a pointer controlled by the UP/DOWN keys indicates the selected variable. Some are simple YES/NO or ON/OFF entries toggled by pressing the EDIT key. Others, such as Channel ID and Eunits fields may have many ASCII character possibilities.
  • Page 14 TXP-C20_Instruction_Manual_(Rev1.0) Figure 3-3 – Channel Setup Screen 3.3.3 Alarm 1 / Alarm 2 / Alarm 3 Setup Menus Alarms 1, 2 and 3 have identical menus. The only difference between each is A1 front panel LED indicators are yellow while A2’s and A3’s are red. Typical applications often have A1 set at a WARN level, A2 at a HIGH level and A3 at a negative FAULT level.
  • Page 15 TXP-C20_Instruction_Manual_(Rev1.0) relay, front panel LED, and optional discrete relay to latch. NO allows all outputs for this alarm to automatically reset after the alarm condition clears. Discrete LED indicators on the front panel indicate the status of each alarm. Any new alarm event causes the associated LED to flash until an Alarm Reset occurs causing an acknowledged steady on condition.
  • Page 16 Follow these TXP-C20 sensor calibration guidelines: • Calibration accuracy is only as good as the calibration standard accuracy. Macurco Gas Detection recommends calibration standards with NIST (National Institute of Standards and Technology) traceable accuracy to increase the validity of the calibration.
  • Page 17 • Allow the sensor to stabilize before starting calibration (approximately 5 minutes). • Calibrate on a regular schedule. (Macurco Gas Detection recommends once every 3 months, depending on use and sensor exposure to poisons and contaminants.) • Calibrate only in a verified clean atmosphere free of background gas or using appropriate zero gas.
  • Page 18 TXP-C20_Instruction_Manual_(Rev1.0) pointing to the desired item and pressing EDIT. The Diagnostics menu group (section 2.3.5) is useful for testing relay and analog I/O without stimulating the input. Figure 3-8 – System Configuration Menus Screen 3.4.1 Relay 1 / Relay 2 Menus The Relay 1 &...
  • Page 19 TXP-C20_Instruction_Manual_(Rev1.0) Figure 3-10 – Relay Statues Screen Failsafe controls relay activation for the common relays. Failsafe ON causes these relays to de-energize • during alarm conditions and energize when there is no alarm. With Failsafe active, a power failure forces the relay contact to the alarm position.
  • Page 20 The system Comm Port menu allows setting RTU address for the optional slave Modbus serial port. This slave port may be used to transfer TXP-C20 data to a host device such as a PC, PLC, DCS or even another Macurco Gas Detection Controller.
  • Page 21 TXP-C20_Instruction_Manual_(Rev1.0) Figure 3-14 – Clock/Delays Screen 3.4.5 Diagnostics Menu WARNING: Alarm processing is halted with the Diagnostics mode active. The Diagnostics menu in Figure 3-13 is useful for testing standard and optional Input / Output devices such as relays and 4-20mA outputs. Diagnostic menu items are described below: Figure 3-13 –...
  • Page 22 TXP-C20_Instruction_Manual_(Rev1.0) Figure 3-15 – Input Min/Max Screen Common Relays menu item allows manual activation of the common relays and optional local audible piezo. Discrete Relays menu item allows manual activation of the optional Discrete Relay boards. 3.5 System Security Menu A 4-digit Pass Code entered and confirmed in this menu item locks all menus.
  • Page 23 TXP-C20_Instruction_Manual_(Rev1.0) 4 Motherboard Interface PCB The TXP-C20 Motherboard shown below in Figure 4-2 is the interface between the Display / CPU assembly and all other system I/O devices. The Display / CPU assembly attaches to the motherboard with 4-standoffs and connects via ribbon cable to S1.
  • Page 24 TXP-C20_Instruction_Manual_(Rev1.0) Figure 4-2 – Motherboard REV – 1.0 [34-2900-0207-5 ] 22 | P a g e...
  • Page 25 TXP-C20_Instruction_Manual_(Rev1.0) 4.1 Input / Output Optional PCB’s P1, P2 and P3 connectors on the motherboard offer unique positions for I/O options described in this section. A screen appears briefly after power-up indicating what I/O options are connected. Input options installed into the P1 position may be either 10-bit or 12-bit and the Input Min / Max menu shown in Figure 3-15 must be set accordingly.
  • Page 26 TXP-C20_Instruction_Manual_(Rev1.0) gases at the same location. The bridge sensor channel includes bridge amplifier, balance potentiometer, and adjustable switching regulator for setting the correct sensor excitation voltage. A 3-position coarse gain jumper allows setting the gain of the bridge amplifier. Bridge sensors not mounted to the TXP-C20 enclosure at the factory will require the Initial Setup calibration procedure described in section 3.1.4.
  • Page 27 TXP-C20_Instruction_Manual_(Rev1.0) with a bridge amplifier, balance potentiometer, and an adjustable switching regulator for setting the correct sensor excitation voltage. A 3-position coarse gain jumper allows setting the gain of the bridge amplifier. Fault supervision circuitry forces the TXP-C20 into a FAULT condition upon sensor failure or removal. This option may also be configured to accept 4-20mA inputs for mixing a sensor and a current loop into the same board.
  • Page 28 TXP-C20_Instruction_Manual_(Rev1.0) Figure 4-5 – Optional Bridge Sensor Input Board 4.1.5 Optional Electrochemical Sensor Input Board Important! Dual EC Sensor input PCB’s may only be installed into motherboard position P1. The 10-bit dual Electrochemical Sensor Input option shown in Figure 4-6 allows these popular gas sensors to be connected directly to the TXP-C20 without additional signal conditioning or transmitters.
  • Page 29 TXP-C20_Instruction_Manual_(Rev1.0) AC or DC power supplies to relays on the Discrete Relay PCB option must be the same for each relay. Example: 24VDC should not be the power switched by one relay and 115VAC by others. Figure 4-6 – Optional Electrochemical Sensor Input Board 4.1.7 Optional 4-20mA Analog Output Board Important! Analog Output Board PCB’s may only be installed into motherboard position P2.
  • Page 30 TXP-C20_Instruction_Manual_(Rev1.0) Figure 4-7 – Optional 4-20mA Analog Output Board 4.2 Modbus RS-232 / RS-485 Interface Option The Modbus option PCB add both RS-232 and RS-485 Modbus RTU slave ports. Figure 4-8 shows this optional PCB which mounts to connectors on the upper right corner of the TXP-C20 motherboard. TB1 provides two pairs of T/Rx terminals and a floating terminal for shield continuation.
  • Page 31 TXP-C20_Instruction_Manual_(Rev1.0) Figure 4-8 – Optional Modbus RS-232 /RS-485 interface Board 4.2.1 Modbus Register and Function Code Summary The following table identifies TXP-C20 Modbus register locations and function codes. REV – 1.0 [34-2900-0207-5 ] 29 | P a g e...
  • Page 32 TXP-C20_Instruction_Manual_(Rev1.0) Variable Alias Read Function Code Write Function Code Read/Write Coils: Alarm Ack/Reset 2001 Note: After writing a TRUE to this register, the TXP-C20 will reset it to FALSE. Read Only Discrete: Chan 1 Alarm 1 12001 Chan 1 Alarm 2 12002 Chan 1 Alarm 3/Flt 12003...
  • Page 33 TXP-C20_Instruction_Manual_(Rev1.0) K2_ACK BIT14 LOCK BIT15 Alarm Status Word 31008 16-bit status word bit assignment for system status CHAN_1ALM_1 BIT0 CHAN_1ALM_2 BIT1 CHAN_1ALM_3 BIT2 CHAN_2ALM_1 BIT3 CHAN_2ALM_2 BIT4 CHAN_2ALM_3 BIT5 RELAY_1 BIT6 RELAY_2 BIT7 PIEZO BIT7 SENSOR_LIFE Chan1 31009 SENSOR_LIFE Chan2 31010 Returns –1 for “Cal Required”...
  • Page 34 TXP-C20_Instruction_Manual_(Rev1.0) Notes: Real value represents float value without the decimal point such as 123.4 is returned as 1234. Decimal devisor is returned as 1, 10, 100, or 1000 for decimal position of 1, 2, 3, or 4, where 123.4 would return the value 10.
  • Page 35 TXP-C20_Instruction_Manual_(Rev1.0) 4.3 Optional External 24VDC 50-Watt Power Supplies Some applications may require 24VDC power in excess of the 12 watts supplied by the TXP-C20. NEC Class 2 FIFTY- WATT external supplies are available for Division 1 and Division 2 potentially hazardous area installations and both also include a NEMA 4X weather rating.
  • Page 36 TXP-C20_Instruction_Manual_(Rev1.0) 5 TXP-C20 N4 NEMA 3x Wall Mount Enclosure The TXP-C20 N4 wall mount NEMA 4X enclosure is shown in Figure 5-1. Non-metallic enclosures are not grounded by metal conduit. For internal ground points to be grounded to earth, the TB5 – GND terminal must have a proper earth ground connection.
  • Page 37 TXP-C20_Instruction_Manual_(Rev1.0) 5.1 TXP-C20 XP NEMA 7 Explosion-Proof Wall Mount Enclosure The TXP-C20 XP shown in Figure 5-2 is an aluminum NEMA 7 wall mount enclosure designed for mounting into potentially hazardous. Figure 5-2 – XP NEMA 7X Enclosure REV – 1.0 [34-2900-0207-5 ] 35 | P a g e...
  • Page 38 TXP-C20_Instruction_Manual_(Rev1.0) 5.2 TXP-C20 PY NEMA 4X Polycarbonate Wall Mount Enclosure The TXP-C20 PY wall mount NEMA 4X enclosure is shown in Figure 5-3. Non-metallic enclosures are not grounded by metal conduit. For internal ground points to be grounded to earth, the TB5 – GND terminal must have a proper earth ground connection.
  • Page 39 TXP-C20_Instruction_Manual_(Rev1.0) 5.3 TXP-C20 PCS NEMA 4 Painted Steel Wall Mount Enclosure The TXP-C20 PCS shown in Figure 5-4 is a Painted Carbon Steel NEMA 4 wall mount enclosure designed for non- corrosive installations. Figure 5-4 – PCS NEMA 4 Enclosure REV –...
  • Page 40 TXP-C20_Instruction_Manual_(Rev1.0) 5.4 TXP-C20 SS NEMA 4X Stainless Steel Wall Mount Enclosure The TXP-C20 SS shown in Figure 5-5 is a 316 Stainless Steel NEMA 4X wall mount enclosure designed for corrosive installations. Figure 5-5 – SS NEMA 4X Enclosure REV – 1.0 [34-2900-0207-5 ] 38 | P a g e...

  • Page 41: Appendix A - Table Of Figures

    TXP-C20_Instruction_Manual_(Rev1.0) 6 Appendix A – Table of Figures Figure 2-1 – TXP-C20 Front Panel ............................. 5 Figure 2-2 – TXP-C20 Display Board ..........................6 Figure 2-3 – Data Display Screens ............................ 6 Figure 3-1 – Menu Tree ..............................10 Figure 3-2 – Setup Screen ............................... 11 Figure 3-3 –...
  • Page 42 TXP-C20_Instruction_Manual_(Rev1.0) Figure 5-4 – PCS NEMA 4 Enclosure ..........................37 Figure 5-5 – SS NEMA 4X Enclosure ..........................38 REV – 1.0 [34-2900-0207-5 ] 40 | P a g e...
  • Page 44 7 Macurco Gas Detection Product limited warranty Macurco warrants the <Model> gas detector will be free from defective materials and workmanship for a period of two (2) years from the date of manufacture, provided it is maintained and used in accordance with Macurco instructions and/or recommendations.

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