Macurco TracXP TXP-C20 User manual

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

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1 Safety Information.................................................................................................................................................... 3
1.1 Read Before Installation and Operation........................................................................................................... 3
1.2 WARNINGS ....................................................................................................................................................... 4
2.1 Key Features ..................................................................................................................................................... 6
2.2 Optional Features............................................................................................................................................. 7
2.3 Ratings and Certifications................................................................................................................................. 7
2.4 Specifications.................................................................................................................................................... 7
2.4.1 Power Input .............................................................................................................................................. 7
2.4.2 Standard Output........................................................................................ Error! Bookmark not defined.
2.4.3 Accuracy .................................................................................................... Error! Bookmark not defined.
2.4.4 Display ....................................................................................................... Error! Bookmark not defined.
2.4.5 Ambient temperature............................................................................................................................... 8
2.4.6 Temperature Drift..................................................................................................................................... 8
3 Installation Instructions............................................................................................................................................ 9
3.1 System Diagrams .............................................................................................................................................. 9
3.1.1 Assembly Diagram ..................................................................................... Error! Bookmark not defined.
3.1.2 External system Diagram........................................................................... Error! Bookmark not defined.
3.2 Sensor Location ................................................................................................................................................ 9
3.3 Mounting the Enclosure ................................................................................................................................. 11
3.4 Sensor Installation .......................................................................................................................................... 11
4 General Operating Instructions................................................................................. Error! Bookmark not defined.
4.1 Introduction....................................................................................................... Error! Bookmark not defined.
5.1 Key Features ...................................................................................................... Error! Bookmark not defined.
6.1 Relay 1 / 2 / 3..................................................................................................... Error! Bookmark not defined.
6.1.1 Alarm 1 / 2 / 3 Fault................................................................................... Error! Bookmark not defined.
6.1.2 Acknowledge ............................................................................................. Error! Bookmark not defined.
6.1.3 Failsafe....................................................................................................... Error! Bookmark not defined.
6.1.4 Override..................................................................................................... Error! Bookmark not defined.
7.1 Channel 1 / 2...................................................................................................... Error! Bookmark not defined.
7.1.1 Alarm 1 / 2 / 3............................................................................................ Error! Bookmark not defined.
7.1.2 Fault Alarm ................................................................................................ Error! Bookmark not defined.
7.2 Data From.......................................................................................................... Error! Bookmark not defined.
16 Appendix A – Table of Figures ............................................................................................................................ 39
18 Macurco Gas Detection Product limited warranty............................................................................................. 41
Technical Support Contact Information...................................................................................................................... 41
General Contact Information ......................................................................................................................................41

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1Safety 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
UNIQUEMENT PAR UN PERSONNEL QUALIFIÉ. ÉTUDIER LE MANUE D’INSTRUCTIONS EN ENTIER AVANT D’UTILISER,
D’ENTRETENIR OU DE RÉPARER L’ÉQUIPEMENT.
CAUTION: KEEP EXPLOSION PROOF COVER TIGHT WHILE CIRCUITS ARE ALIVE.
ATTENTION: GARDEZ LE COUVERCLE ANTI-EXPLOSION SERRÉ PENDANT QUE LES CIRCUITS SONT VIVANTS.
CAUTION: USE SUPPLY WIRES SUITABLE FOR 40°C ABOVE SURROUNDING AMBIENT.
ATTENTION: UTILISER DES FILS D'ALIMENTATION QUI CONVIENNENT A UNE TEMPERATURE DE 40°C AU-DESSUS DE
LA TEMPERATURE AMBIANTE.
WARNING - EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2.
AVERTISSEMENT - RISQUE D'EXPLOSION
LA SUBSTITUTION DES COMPOSANTS PEUT PROVOQUER UNE ADAPTATION À LA CLASSE I, DIVISION 2.
WARNING- EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT WHEN ENERGIZED UNLESS THE AREA IS KNOWN TO BE NON-HAZARDOUS.
AVERTISSEMENT - RISQUE D'EXPLOSION
NE PAS BRANCHER OU DÉBRANCHER LORSQU'IL EST SOUS TENSION, SAUF SI LA ZONE EST CONNUE POUR ÊTRE NON
HASARDEUX.
CAUTION: A CONDUIT SEAL MUST BE INSTALLED WITHIN 18 INCHES OF THE ENCLOSURE.
ATTENTION: LE CONDUIT DOIT ÊTRE INSTALLÉ À MOINS DE 18 POUCES DU BOÎTIER.

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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).
•Only the combustible monitor portions of this instrument have been assessed by CSA for 122.2 No. 152
performance requirements.
•This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-hazardous locations only.
•WARNING- EXPLOSION HAZARD- SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I,
DIVISION 2.
•WARNING- EXPLOSION HAZARD- DO NOT REPLACE FUSE UNLESS POWER HAS BEEN SWITCHED OFF OR THE
AREA IS KNOWN TO BE NON-HAZARDOUS.
•WARNING- EXPLOSION HAZARD- DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN SWITCHED
OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS.
•Use a properly rated CERTIFIED AC power (mains) cable installed as per local or national codes.
•For DC powered units, DC power must be from a SELV rated source.
•A certified AC power (mains) disconnect or circuit breaker should be mounted near the controller and
installed following applicable local and national codes. If a switch is used instead of a circuit breaker, a
properly rated CERTIFIED fuse or current limiter is required to be installed as per local or national codes.
Markings for positions of the switch or breaker should state (I) for on and (O) for off.
•Clean using only a damp cloth with no solvents.
•Equipment not used as prescribed within this manual may impair overall safety.

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2Introduction
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. A dedicated horn driver circuit for a local
audible annunciator is also standard. Two standard 5-amp alarm relays are configurable via the “alarm voting”
menu to make relays trip based upon various alarm combinations. Real-Time Clock and Calendar are also standard.
Options such as 4-20mA outputs, discrete relays for each alarm and audible annunciators are easily added. RS-485
(Modbus RTU) or Ethernet (Modbus TCP) ports are also available for sending data to PC’s, PLC’s, DCS’s, or other
Macurco Gas Detection controllers.
A 128 x 64-pixel graphic LCD readout displays monitored data as bar graphs, 30-minute trends and engineering units.
System configuration is via user friendly menus and all configuration data is retained in non-volatile memory during
power interruptions. The TXP-C20 front panel is shown below in Figure 2-1 displaying the bar graph data screen.
The five button symbols below the display are magnetically activated using the supplied magnetic wand without
opening the enclosure. Opening the enclosure door provides access to the “touch” keypad as shown in Figure 2-2.
Figure 2-1 – TXP-C20 Front Panel

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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

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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. The direction the horizontal 45-degree arrow
side points indicates either a HIGH or LOW trip as illustrated in Figure 2-3 where Ch 1 points right indicating high
level trips and Ch 2 points left indicating low level trips. Left and Right-hand arrows located at the ends of each bar
graph point towards Channel Alarm LED’s on the front panel associated with this reading. The 10-digit ASCII fields
for identifying engineering units and Channel ID for each channel are also shown on the Main Data screen.
2.2 Trend Screen
In addition to the Main Data screen described above, the TXP-C20 also provides 30-minute trend screens for each
channel as shown in Figure 2-3. Data screens are selected by the NEXT key.
2.3 Blind Mode Screen
The TXP-C20 Blind Mode screen shown at right in Figure 2-3 does not allow viewing of channel engineering unit
values. It only indicates the system’s alarm status and time / date. Some applications require only alarm status be
displayed and prefer monitored values not be shown. A SECURITY menu (see section 2.40) allows locking all
configuration parameters and having only the Blind Mode screen available for viewing.
2.4 Specifications
2.4.1 Power Supply Requirements
TXP-C20 primary power may be either 10-30 VDC or 100-240VAC. AC power requirements are 100-240 VAC 50/60
Hz @ .80-amp max (including inrush) and 40 watts max steady state, applied to TB5 on the motherboard. If AC
power is not available, the primary power may be 10-30 VDC applied to TB1 on the motherboard. A back-up DC
power source may also be connected to TB1 for automatic switchover if the AC power source fails. See Figures 4-1
and 4-2 for wiring information.
The basic TXP-C20 consumes only 1.5 watts of 10-30 VDC power. Optional features such as relays and analog
outputs increase power consumption as described below:
•Analog Input PCB option: add wattage for each monitor connected to this board’s 24 VDC terminals.
•Discrete Relay PCB option: add 1.5 watt.
•4-20mA Output PCB option: add .5 watt.
•Bridge Sensor Input PCB option: add wattage of each sensor attached.
With an AC primary power source connected to TB1 on the motherboard, TB3 terminals 1 & 2 on the motherboard
provide a maximum of 12 watts output power for powering of auxiliary external devices such as relays, lights and
monitors (see Figure 4-1). Power consumed from TB3 must be included when calculating system power
consumption.
IMPORTANT! TB3 only provides 24VDC power when AC is primary power.
24 VDC terminals on the Analog input option (see Figure 4-3) may also be used to power external transmitters and
these loads must be calculated into the overall power budget. These terminals receive power from both the integral
AC / DC power supply and the external TB1 supply as shown in Figure 4-1.

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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. TXP-C20s may also be equipped with optional solid-state common Form A relays (see
order guide for details) in applications requiring non-arcing switching. Solid-state relays are recommended for
switching of highly inductive loads.
A six mechanical (dry contact) Discrete Relay option board (see section 3.1.6) provides dedicated Form C relays for
ALARM 1, ALARM 2 and FAULT for both channels.
All mechanical (dry contact) relays are rated at 5 Amp for 28 VDC and 250 ~VAC RESISTIVE loads.
IMPORTANT: Appropriate diode (DC loads) or MOV (AC loads) snubber devices must be installed with
inductive loads to prevent RFI noise spikes.
Optional solid-state relays are rated at 2 Amp 12-280 ~VAC (600Vpk).
Relay wiring should be kept separate from low level signal wiring.
2.4.3 Ambient Temperature Range
•-25 to 60 degrees C°
2.4.4 Humidity Range
•0 TO 90% R. H. Non-Condensing
2.4.5 Altitude
•Recommended up to 2000 meters
2.4.6 Housings / Installation Categories
•*NEMA 4X wall mount. DIV 2 Groups A,B,C,D; Category II and pollution degree 3; NEMA 4X; IP66
•*NEMA 7 wall mount for DIV 1 & 2 Groups B,C,D; includes ‘O’ Ring in door to satisfy NEMA 4 rating.
*Includes standard non-intrusive magnetic keypad.
2.4.7 Approvals
CSA C22.2 No 1010.1 and ISA S82.02; CSA C22.2 No 152 for combustibles; UL 1604 / C22.2 No 213 (Div 2 Groups A, B,
C, D); EN55011 & EN61000 (CE Mark). CSA File # = 219995 and may be seen at: CSA-International.org.