Emerson TESCOM ERNG-X User manual

Instruction Manual
dopsm2107x012
January 2017
ERNG-X
TESCOM Product Manual
Figure 1. ERNG-X

Table of Contents
January 2017
ERNG-X
dopsm2107x012
Table of Contents 1
Contents
Section 1: Introduction ..................................................... 2
Section 2: Before You Begin................................................ 2
2.1 Safety, Installation and Operations Precautions .......................... 3
2.1.1 TESCOM Electronic Controllers, Regulators and Filters ............ 3
Section 3: Product Description............................................ 6
3.1 Features ............................................................ 6
3.1.1 Accurate Pressure Control ..................................... 6
3.1.2 Automation.................................................. 6
3.1.3 ERTune™ Program ............................................ 6
3.1.4 Items Included ............................................... 6
3.2 Controlling System Pressure ........................................... 6
3.3 Specifications........................................................ 7
Section 4: Installation ....................................................... 8
4.1 Installation Diagram .................................................. 8
4.2 Mounting ........................................................... 8
4.3 Connect Pressure Lines ............................................... 8
4.4 Wiring .............................................................. 9
4.5 Communication ..................................................... 9
4.6 System Leak Check ................................................... 9
4.7 ERNG-X Tuning ...................................................... 9
4.8 Special Control Features Available ..................................... 10
Section 5: Maintenance .................................................... 10
5.1 Filter Maintenance .................................................. 10
Section 6: Drawings......................................................... 11
6.1 ERNG-X Dimensions ................................................. 11
6.2 C195-X Filter Assembly .............................................. 12

Section 1: Introduction
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Section 1: Introduction
2
Section 1: Introduction
This manual is valid only for ERNG-X. The instructions for individual components must also be
read and followed.
• ER5000 Getting Started (DOPSM2065XML2)
• ER5000 Series User Manual (DOPSM2064X012)
• Safety, Installation, Operations and Service Manual (DOPMS2080X012)
Section 2: Before You Begin
WARNING
Do not install, operate or maintain an ERNG-X or any associated equipment,
without reading and fully understanding the installation guidelines and
operating instructions for every component of your application. To avoid death,
serious injury and/or property damage, it is important to carefully read,
understand and follow all contents of this Product Manual, including all safety
cautions and warnings. If you have any questions about these instructions,
contact your TESCOM sales office before proceeding.
Make sure that the components and materials used in the fluid handling system
are compatible with the fluid and have the proper pressure rating. Failure to do so
can result in death, serious injury and/or property damage. Inspect the regulator,
valve and accessories for physical damage and contamination.
Do not connect the regulator, valve or accessory if you detect oil, grease or
damaged parts. If the regulator, valve or accessory is damaged, contact your local
TESCOM representative to have the regulator cleaned or repaired.
Do not modify equipment or add attachments not approved by the manufacturer.
Failure to do so can result in death, serious injury and/or property damage.
Before proceeding with any installation procedures:
  
injury or property damage.
  
while the system is pressurized.
  
installation or maintenance.
  
installation or maintenance.
  
and associated equipment from process pressure prior to installation,
maintenance or removal.
  
while you work on the equipment.
  
must be taken to protect against process media dangers.

Section 2: Before You Begin
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Section 2: Before You Begin 3
2.1 Safety, Installation and Operations Precautions
2.1.1 TESCOM Electronic Controllers, Regulators and Filters
WARNING
Do not attempt to select, install, use or maintain this controller or accessory until you have
read and fully understood these instructions and the individual component instructions.
Be sure this information reaches the operator and stays with the product after installation.
Do not permit untrained personnel to install, use or maintain this controller or accessory.
Improper selection, installation, maintenance, misuse or abuse of this controller or related
accessories can cause death, serious injury and/or property damage.
Possible consequence include but are not limited to:
• High velocity fluid (gas or liquid) discharge
• Electrocution
• Parts ejected at high speed
• Contact with fluids that may be hot, cold, toxic or otherwise injurious
• Explosion or burning of the fluid
• Lines/hoses whipping dangerously
• Damage or destruction to other components or equipment in the system

1. Read and understand the user’s manual before operating the product.
2. Before each use, inspect the product for physical damage and contamination. Do not
connect the controller or component if you detect oil, grease or damaged parts. If the
product is damaged, contact your local TESCOM representative to have the product
cleaned or repaired.
3. Operate the product only under specified environmental conditions.
4. Follow instructions in the manuals for proper wiring.
5. Never connect the product to a supply source having a voltage greater than the
maximum rated voltage of this controller or accessory.
6. Never connect the product to a supply source having a pressure greater than the
maximum rated pressure of this controller or accessory.
7. Start up sequence for electropneumatic controllers is:
a. Feedback loop must be installed and operational.
b. Electrical power should be applied and system setpoint reduced to its lowest
pressure output before turning on the pneumatic supply to the ERNG-X controller.
8. Refer to product label (modification specific) for maximum inlet pressures. If this
rated pressure cannot be found, contact your local TESCOM representative for the
rated pressure prior to installation and use. Verify the designed pressure rating of all
equipment (e.g., supply lines, fittings, connections, filters, valves, gauges, etc.) in your
system. All must be capable of handling the supply and operating pressure.

Section 2: Before You Begin
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Section 2: Before You Begin
4
9. Clearly establish flow direction of the fluid before installation of controllers, regulators,
valves and accessories. It is the responsibility of the user to install the equipment in the
correct direction.
10. Remove pressure from the system before tightening fittings, gauges or components.
11. Never turn controller, regulator or filters. Instead, hold the body and turn fitting nut.
12. If a controller, regulator or valve leaks or malfunctions, take it out of service immediately.
13. Apply pressure to the system gradually, avoiding a sudden surge of fluid or pressure
shock to the equipment in the system.
14. Regulators are not shut-off valves. Install a pressure relief device downstream of the
regulator to protect the process equipment from operating pressure increases. Shut off
the supply pressure when the regulator is not in use.
15. Periodic inspection and scheduled maintenance of your equipment is required for
continued safe operation.
16. The frequency of servicing is the responsibility of the user based on the application.
Never allow problems or lack of maintenance to go unreported.
17. Read and follow precautions on compressed gas cylinder labels.
18. It is important that you analyze all aspects of your application and review all available
information concerning the product or system. Obtain, read and understand the
Material Safety Data Sheet (MSDS) for each fluid used in your system.
19. Never use materials for controllers, regulators, valves or accessories that are not
compatible with the fluids being used.
20. Users must test under normal operating conditions to determine suitability of materials
in an application.
21. Vent fluids to a safe environment and in an area away from employees. Be sure
that venting and disposal methods are in accordance with Federal, State and
Local requirements. Locate and construct vent lines to prevent condensation or
gas accumulation. Make sure the vent outlet is not obstructed by rain, snow, ice,
vegetation, insects, birds, etc. Do not interconnect vent lines; use separate lines if more
than one vent is needed.
22. Do not locate regulators, valves or accessories controlling flammable fluids near open
flames or any other source of ignition.
23. Some fluids, when burning, do not exhibit a visible flame. Use extreme caution when
inspecting and/or servicing systems using flammable fluids to avoid death or serious
injury to employees. Provide a device to warn employees of these dangerous conditions.
24. Many gases can cause suffocation. Make certain the area is well ventilated. Provide a
device to warn employees of lack of Oxygen.
25. Never use oil or grease on these controllers, regulators, valves or accessories. Oil and
grease are easily ignited and may combine violently with some fluids under pressure.
26. Have emergency equipment in the area if toxic or flammable fluids are used.
27. Do not bleed system by loosening fittings.
28. Prevent icing of the equipment by removing excess moisture from the gas.
29. Always use proper thread lubricants and sealants on tapered pipe threads.

Section 2: Before You Begin
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Section 2: Before You Begin 5
WARNING
Complete system integration and design is the responsibility of the user. The following
are suggested malfunction design considerations but is not an all inclusive list.
• Loss of ERNG-X controller power, loss of transducer power or loss of flow meter power
• Interrupted or lost communication exchange to ERNG-X controller
• Inlet solenoid malfunction leading to uncontrollable pressurization of spring case
on pipeline pilot regulator
• Instability in system causing pressure swings
• Back flow of high pressure gas into ERNG-X controller control port, exhaust port or
gauge port causing uncontrollable pressurization of the spring case of the pipeline pilot
regulator and/or over pressurization of the pressure rating of the ERNG-X controller.
• Exhaust port corrosion from atmospheric salt and humidity
• Decaying inlet of supply regulator causing over pressurization to ERNG-X controller
• Spring case rating on pipeline pilot regulator

Manual (DOPSM2064X012) for complete ER5050 product capabilities:
• Rated for 20.5 to 28.5 VDC, 340 mA
• Maximum working pressure: 110 psig / 7.5 bar
• ambamb
• Make sure everything is properly assembled before connecting and
applying power.
• Do not open when an explosive atmosphere is present.
• Installation to be in accordance with the latest edition of National Electrical Code.
• The cable and conduit entries (1/2"-14 NPT) devices shall be certified flame proof
types, suitable for the conditions of use and correctly installed.
• 
• Seal conduit entry within 18 inches.
• The user/installer shall not remove any of the three 1/8"-27 NPT plugs that are
fitted into the base of the enclosure as this will invalidate the Hazardous Locations
Certifications (See manual for locations).
• When using natural gas as pilot media, ERNG-X complete product must be used.
The ER5050XX-1-002 by itself is not approved for natural gas.
• Excessive moisture may cause internal corrosion to ERNG-X and filter maintenance
must be maintained to meet media quality requirements.
• Exhaust, pressure relief and filter drains must be vented away per local code.
• ERNG-X controller exhaust cannot be plumbed to pressure relief vent line or filter
drain lines.
WARNING
If a regulator or valve leaks or malfunctions, take it out of service immediately. You
must have instructions before doing any maintenance. Do not make any repairs you do
not understand. Have qualified personnel make repairs. Return any equipment in need
of service to your equipment supplier for evaluation and prompt service. Equipment is
restored to the original factory performance specifications, if repairable. There are flat
fee repair charges for each standard model. The original equipment warranty applies
after a complete overhaul.

Section 3: Product Description
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Section 3: Product Description
6

Proper Component Selection
1. Consider the total system design when selecting a component for use in a system.
2. The user is responsible for assuring all safety and warning requirements of the
application are met through his/her own analysis and testing.
3. Component function, adequate ratings, proper installation, operation and maintenance
are the responsibilities of the system user.
Section 3: Product Description
The ERNG-X is an accurate and reliable way of controlling natural gas. The product includes a
pressure regulator, preconditioning filters and an electro pneumatic controller for automated
control. The product is panel mounted and can be easily installed in an enclosure or on a wall.
The ERNG-X is a unique and flexible electropneumatic, closed loop, PID controller. The included
ERTune software program provides an easy means of setup, tuning and data acquisition.
3.1 Features
3.1.1 Accurate Pressure Control
— Eliminates droop within the flowing capacity of the pipeline regulator
— Pipeline outlet pressure control is independent of the pipeline inlet pressure
3.1.2 Automation
— Remote set point control from a PC or PLC
3.1.3 ERTune™ Program
— Included with every ERNG-X, provides data acquisition routine
3.1.4 Items Included
All ERNG-X include:
— ER5050FX-1-002 with ERTune program and ER5000 User Manual (DOPMS2080X012)
— ER Supply Regulator with relief valve and gauges
— Two preconditioning coalescing filters
3.2 Controlling System Pressure
In a typical application, the control port of the ERNG-X connects to the spring case of the
pipeline pilot regulator. This is shown in Figure 2. Supply pressure of up to 110 psig / 7.5 bar,
is provided to the ERNG-X controller by the factory preset supply regulator.
The ERNG-X increases pressure to the spring case of the pipeline pilot regulator by opening
the Pulse Width Modulation (PWM) solenoid valve at the inlet port of the ER5050FX-1-002
and reduces pressure by opening the PWM solenoid valve at the exhaust port of the
ER5050FX-1-002. The controller, configured in external feedback mode, senses system
pressure through input from a transducer mounted downstream in the process line. The
controller reads the feedback and compares it to the setpoint, which it receives from an
external source or from a profile in its onboard memory. The ERNG-X is factory set to update
every 500 milliseconds and can be adjusted between 25 milliseconds and 2,500 milliseconds
to better suit the application.

Section 3: Product Description
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Section 3: Product Description 7
Figure 2. Typical Installation
PIPELINE PILOT



(4-20 mA)

REMOTE OPERATIONS CONTROLLER
(ROC)
ERNG-X
Electrical
Power Requirement : 20.5 - 28.5 VDC;
340 mA Max., 180 mA Nominal
Supply
Media: Natural Gas with a maximum
upper explosion limit below 18% by
volume at atmospheric conditions
Media Quality
Corrosives: H2S and other sulfides
below 10 PPM
Impurities: CO2below 3%; O2below 0.5%
Temperature
-4 to 140°F / -20 to 60°C (dry media
required below 32°F)
Pressure
ERNG-X Panel Supply Input:
2750 psig maximum
ER5050FX-1-002 Controller Input:
maximum 110 psig, minimum output
pressure +1 psig
Input Signals
Setpoint
USB, RS485, Downloaded Profile
4-20 mA, 1-5 VDC (ERNG-I)
0-10 VDC (ERNG-V)
Feedback (external)
4-20 mA or 1-5 VDC (ERNG-I)
0-10 VDC (ERNG-V)
Communication Protocol
USB and RS485 (USB not recommended
for hazardous locations)
3.3 Specifications
ANALOG SET-POINT
SIGNAL (4-20 mA)

Section 4: Installation
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Section 4: Installation
8
Section 4: Installation
4.1 Installation Diagram
Figure 3. Wall Mount Panel
A
D G F
E
B
C
H
4.2 Mounting
1. Mount panel using the 4 mounting holes (A). Note: Use 3/8"or 9 mm bolts.
4.3 Connect Pressure Lines
1. Makesurethepressureofthesupplylineisoffandattachthelinetothelter
inlet port (C). Note: Max pressure 2750 psig / 190 bar natural gas.
2. Connect pipeline pilot regulator spring case port to ER5050FX-1-002 control port (D).
Note: An additional Out Port (G) can be used to monitor the control port pressure.
3. Attach a vent line to exhaust port (F). Note: The vent line must be installed per federal,
state and local codes. The exhaust vent line must be at atmospheric pressure.
4. Attach a vent line to relief valve (B). Note: The vent line must be installed per federal,
state and local codes and must be plumbed separately from EXH port (F).
5. Anoptionalpressuregaugecanbeattachedaboveeitherlterport(E)tomeasureinlet
pressureand/orpressuredifferentialacrosslterelements.Note:Theelementmustbe
replaced when the differential pressure reaches 10 psid, 12 psid maximum.
6. Itisrecommendedtoinstallvalvesintothedrainportofthelters(H)tofacilitate
drainingliquidsfromthecoalescingltersasneeded.

Section 4: Installation
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Section 4: Installation 9
4.4 Wiring
1. Refer to ER5000 User Manual for wiring information.
4.5 Communication
The ER5000 communicates using a USB or RS485 interface. The required USB driver is
provided on the ER5000 User Support Software and Manual CD or online. An RS485
communications link can be established between the ER5000 and a PC using either a USB to
RS485 or RS232 to RS485 converter. RS485 communication must be used for daisy-chaining
two or more (up to 32) ER5000s on the same network. RS485 is recommended for
ERNG-X communication. USB is not recommended for hazardous locations and is also not
recommended for distances greater than 10 ft.
4.6 System Leak Check
After installation of all components and wiring:
• Switch on the ER5050FX-1-002’s power supply.
• Set the controller output pressure to a safe value. Slowly apply ER5050FX-1-002
supply pressure.
Note: ER Supply Regulator is preset from the factory to 110 psig / 7.5 bar and may be
adjusted to better suit application. The ER5050FX-1-002 inlet port should not exceed
110 psig / 7.5 bar.
• Check all fittings for tightness using leak test fluid. No bubbles should be seen.
Note: Due to the increased volume of the spring case on the pipeline pilot regulator, the
ER5050FX-1-002 automatic solenoid leak test should not be used.
4.7 ERNG-X Tuning
• When tuning, use conditions similar to the final application (i.e. similar pressures, flow
and medium). A tuning procedure is provided in the ER5000 User Manual. There is also
“Help” available in the ERTune™ program itself, available on the “Diagnostic Tools” tab
in the ERTune program by clicking the “Tuning Tips” button.
• The ERNG-X is factory set to tuning parameters for the application shown in Figure 2.
The update rate is slowed down from 25 milliseconds to 500 milliseconds to allow
for better stability in the system and to allow for the response of the ER controller to
be translated downstream to the external pressure or flow transducer before making
another set-point change. There are also control limits placed on the Analog Set Point
and External Sensor in case of lost communication and/or power. Both the Analog
Set Point and External Sensor are preset to a minimum of -1% with a condition of Inlet
Closed and Exhaust Closed. If the application does not use a 4-20 mA Analog Set Point
and/or a 4-20 mA External Sense Transducer, these control limits must be changed. To
better suit all applications, the tuning parameters and control features may need to be
modified. Refer to ER5000 User Manual for more details.

Section 5: Maintenance
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Section 5: Maintenance
10
4.8 Special Control Features Available
• Suspend Mode
• Control Limits
• Diaphragm Protection
• Pulse Mode
Note: Refer to ER5000 User Manual for more details.
Section 5: Maintenance
WARNING
The maintenance and repair of pressure equipment must only be performed by
trained personnel.
Since every application exists under different conditions, the user is responsible for
establishing a maintenance program based on their application until enough data is collected
to set up a schedule. Since the preconditioning filters can collect liquids, they should be
checked frequently to ensure proper performance.
1. Visual check for damages (i.e. tubing, electrical components and cables).
2. Check filters for liquids and particle build up (i.e. differential pressure).
3. Check for leaks.
A periodic calibration of the feedback pressure transducer is recommended.
5.1 Filter Maintenance
Filter parts are subject to normal wear and must be inspected periodically and replaced
as necessary. The frequency of inspection and replacement depends upon the severity of
service conditions and upon applicable codes and government regulations.
To ensure a tight seal, check the condition of the O-ring and lubricate it with Multi-Purpose
Polytetrafluoroethylene (PTFE) lubricant whenever disassembling and assembling the filter.
The upper seat is lightly pressed into the filter head. To replace the upper seat, it may be
necessary to remove the 1/4 inch / 6.35 mm pipe plug and push the upper seat out of the
filter head. (Refer to Figure 5 for a cross-sectional view of filter.)
To Replace C195-X Filter cartridge
1. Close the upstream and downstream shutoff valves.
2. Bleed off the pressure.
3. Open the drain valve and drain the moisture from the filter body.
4. Unscrew the filter body from the filter head. Inspect the O-ring and replace if damaged.
5. Remove the filter element.
6. Lubricate the O-ring with Multi-Purpose PTFE lubricant and reassemble the new
filter element.
7. Slowly reapply pressure and check for leaks.

Section 6: Drawings
January 2017
ERNG-X
dopsm2107x012
Section 6: Drawings 11
Section 6: Drawings
6.1 ERNG-X Dimensions
15.75
[400.0]
8.3
[210.8]
14.75
[374.6]
5.0
[127.0]
4X Ø9.92 mm
2X 1/4" – 18 NPT
2X 1/4" – 18 NPT
3.0
[76.2]
1.9
[47.2]
1.0
[26.1]
4.9
[123.4]
11.2
[283.3]
2.5
[64.0]
FRONT VIEW
BOTTOM VIEW
LEFT SIDE VIEW RIGHT SIDE VIEW
5.7
[144.1]
6.0
[152.4]
0.9
[22.6]
2.4
[61.0]
1.1
[27.5]
2X 1/2" – 14 NPTF
1.0
[26.1]
1.1
[28.6]
0.9
[23.5]
1/8" – 27 NPTF
1/4" – 18 NPT
BREAK OUT SECTION
3X 1/4" – 18 NPT
1/2" SAE
(ADAPTOR FITTING INCLUDED
TO ADAPT TO MALE 1/8" NPT)
Figure 4. ERNG-X Dimensions
All dimensions are reference & nominal
Metric [millimeter] equivalents are in brackets

Section 6: Drawings
January 2017
ERNG-X
dopsm2107x012
6.2 C195-X Filter Assembly
PIPE PLUG
O-RING
UPPER SEAT
LOWER SEAT
PIPE PLUG
FILTER
ELEMENT
Figure 5. C195-X Filter Assembly
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