Valin AccuTrace Multizone Heat Trace Control Panel User manual

COMPLEX TECHNOLOGY MADE SIMPLE
Multizone Heat Trace Control Panel
Valin’s Accutrace™ control
panel incorporates the
latest technology and is
packed with features
designed to help optimize
your heat trace system.

Multizone Heat Trace Control Panel | Valin Corporation
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Multizone Heat Trace Control Panel | Valin Corporation
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TABLE OF CONTENTS
SAFETY INFORMATION
ACCUTRACE™ MULTILOOP OVERVIEW
Specifications
INSTALLATION
Dimensions
Equipment Ratings
Customer Wiring
• Power Supply Wiring
• RTD Wiring
• Load Wiring
• Communications Ports
OPERATION
Getting Started
Security and Logging in
Menu Hierarchy
Home Screen
SET UP
Home Menu
Node Menu
Circuit Screen
• PID Auto Tune
Setup Menu
Alarm Settings Menu
GFEP Test Menu
Password Settings
COMMUNICATIONS
Ethernet Port Settings
Changing Ethernet Settings
Modbus Registers
ALARM
TROUBLESHOOTING
AGENCY APPROVALS
CONTACT US
TABLE OF CONTENTS
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Various symbols are used across this User Manual to caution the reader on potential safety hazards and
additional operation information. These symbols must be followed to reduce the risk of injury or damage. Below
is an index containing definitions of each symbol.
Pre-Start Up Inspection
Before installing the AccuTrace™ panel, take time to check the wiring and connections on the unit. Some
components can be aected during shipping by environmental factors, so it is important to inspect the panel
before power is applied.
SAFETY INFORMATION
WARNING - Refer to supplemental information listed next to this
symbol for details on specific hazard.
ELECTRICAL HAZARD - Hazards referring to electrical
conditions such as high voltage. Refer to specific details listed next to
symbol.
WARNING! Maximum total load shall not exceed rated capacity
of the panel as listed in the equipment ratings section.
WARNING! Hazardous voltage can cause severe injury or death.
Turn OFF power before servicing the circuit.
SAFETY INFORMATION

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Storage Guidelines
If this unit is not intended for operation upon receipt, follow the guidelines below to aid in preventing damage
from common environmental factors.
• Storage in a clean, environmentally controlled area is advised.
• To prevent warping during storage, unit must be placed on a solid, even surface.
• Outdoor storage of indoor units is not recommended. The packaging used for shipment of indoor units is
not appropriate for outdoor storage. Provide coverage for the unit to prevent damage from dust, dirt, and
corrosive elements. The jacketing must protect the assembly while providing sucient ventilation.
• If the storage area is aected by humidity and temperature fluctuation, utilize the anti-condensation
enclosure heater provided in the unit, or add heat from an external source to prevent condensation inside
the unit. The internal temperature must be at least 9˚F (5˚C) above ambient. If storage temperatures fall
below 32°F (0°C), utilize the enclosure heater provided, or add sucient heat from a separate source to keep
the internal temperature of the panel at least 32°F (0°C). Inspect the equipment regularly, and add additional
heat if necessary, to keep the equipment dry.
• Remove remaining packing material, paper documents, and other flammable items before operating the
enclosure heater.
Pre-Start Up Inspection
Before installing the AccuTrace™ panel, take time to check the wiring and connections on the unit. Some
components can be aected during shipping by environmental factors, so it is important to inspect the panel
before power is applied. For your safety, please review the Operation Manual prior to start up.
Warranty
For information on Valin assembly warranties and Terms and Conditions Related to Engineered Systems, please
visit: https://www.valin.com/terms-conditions
SAFETY INFORMATION

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ACCUTRACE™
Multizone Zone Heat Trace Control Panel
The AccuTrace™ panel utilizes PID algorithms designed to maintain temperature in the most challenging
applications, for both ambient sensing and line sensing. The panel has 30-amp Solid State Relay controls and
GFEP (30mA) trip protection. a multitude of alarms, including high temp, low temp, high current, low current,
sensor failure and Ground Fault Equipment Protection, creating a package of unrivaled performance.
For extreme cold starts and long circuit lengths, the AccuTrace™ panel employs a soft start feature, reducing the
inrush current. This helps mitigate potential high current alarms that are a known problem during startups.
The AccuTrace™ multiloop has a 10”, full color, easy-to-navigate touch screen display. The control interface is
intuitive and simple to program, allowing for fast, accurate setup and commissioning. We also oer 3 levels
of password protection, to further ensure the highest security while allowing quick access in the field, as
appropriate.
FEATURES
Input
• Sensor Type 3-wire RTD, 100  PT, 0.00385 //˚C,20  balanced lead wire (-200˚C – 850˚C)
Output
• SSR Power Switching
• 4-48 circuits
• Up to 30 Amps per Circuit
Control Modes
• Auto PID
• On/O-Control mode. Dead band, (˚F) Range: +/- 100˚F
• Manual-Range: 0 – 100%
• Soft Start
Settings
• Alarm Types: Low & High Temperature, Low & High Current, High GFEP, Sensor Failure
• Alarm Access: Via Modbus. General Alarm contact option available.
• Warning;-ElectricityOutput on Sensor Failure, Range: 0–100%, Auto Transfer to Manual Mode
• 3 Levels of password protected security
OVERVIEW

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OVERVIEW
Display, HMI, Indication
• 10” Full Color Resistive Touch Screen
• Resolution 800 x 480px
• Optional sunshade protection*
Alarms
• Temperature (PV) Range: 0˚F to 720˚F (-18˚C to 382˚C)
• Low Temperature Alarm, Range: 0˚F to 720˚F, O (-18˚C to 382˚C, O)
• High Temperature Alarm, Range: 0˚F to 720˚F, O (-18˚C to 382˚C, O)
• Low Current Alarm, Range: 1A – 30A, O
• High Current Alarm, Range: 1A – 30A, O
• GFEP, Range: 20mA – 80mA
• GFEP Alarm Condition, Alarm and Trip at GFEP Setpoint
Communications
• Modbus TCP
• Other protocols available upon request (contact factory)
Operating & Environmental
• Operating Temperature: -4˚F to 104˚F
• Power Supply: Up to 480VAC, 50/60Hz
• Enclosure rating: UL type 3R, 4, 12 (4X optional)
• Approvals: UL508A for ordinary areas, UL/cUL NNNY Class I, Division II optional with purged pressurization
system.
ADVANCED CONFIGURATION OPTIONS
Remote Terminal Unit (RTU) Expansion Panel
Each AccuTrace™ RTU expansion panel adds an additional 4 loops of heat trace circuits to the system. They are
controlled via Modbus communications by the AccuTrace™ multiloop panel, so an additional HMI is not necessary
for the expansion unit, lowering cost.
*ACCUTRACE™ WITH SUNSHADE
HMI PROTECTION.

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OVERVIEW
FRONT VIEW SIDE VIEW
*WITH OPTIONAL SUNDSHADE
Purged Enclosure
Selecting the purged enclosure option will allow the AccuTrace™ multiloop to be installed and operated in
hazardous areas rated Class I Div II Groups A, B, C, and D.
Dimensions (4-24 Circuit Models)

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OVERVIEW
CONTROL METHODS
The AccuTrace™ multiloop is capable of PID control, on/o control, and manual control for 48 loops locally, and
up to 224 loops remotely through the use of the RTU Expansion Panels. Each circuit may be rated up to 30A.
Auto PID Mode
A closed loop control method that will control the power output to the heat trace circuit based on a PID
algorithm. The proportional, integral, and derivative variables can be modified via the touchscreen HMI for
process optimization.
Manual Mode
An open loop control method that sets the power output to a user-specified percentage. As a safety feature,
manual mode is also the failover mode from Auto PID or On/O if the temperature sensor fails. This way, the
integrity of the process may be automatically maintained.
On/O Mode
A closed loop control method that utilizes Deadband hysteresis values to determine the power output. The
output will turno once the process temperature reaches the deadband’s high setpoint and turns on when the
process temperature reaches the deadband’s low setpoint.

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INSTALLATION
1 . INSTALLATION
WARNING! AccuTrace™ utilizes Solid State Relay (SSR) power switching. To dissipate the
heat generated from the SSR’s, the heat sink located on the back of the enclosure must
be in an upright position. The panel must be mounted vertically as shown below in Figure
1-1 to accomplish proper heat dissipation.
WARNING! Installation of equipment must be performed by qualified and experienced personnel.
Installation Location
The heat sink side of the AccuTrace™ Multiloop panel is designed to provide the necessary airflow for heat
dissipation. Ensure that airflow is not blocked or restricted in any way. Refer to Figure 1-1 below. Allow 3 inches
of clearance between heat sink assemblies and surrounding equipment or walls. Allow 12 inches of clearance
above heat sink assemblies. The heat sink assemblies must be inspected every season to confirm that no debris
or objects are in contact with the heat sink. To dislodge debris, use high pressure blasts of clean air that will not
damage the fins.
ACCUTRACE™ MULTILOOP
FIGURE 1.1
SURROUNDING EQUIPMENT

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INSTALLATION
Outdoor Installation
Environmental factors must be assessed when installing your AccuTrace™ system outdoors. Both Solar Gain and
UV Ray Exposure can adversely aect the unit.
Solar Gain
The panel ratings, per UL/cUL, are based on operating the panel within the listed Ambient Environmental
temperatures and without exposure to direct sunlight. It is advised to install an appropriately designed solar
shield to provide shade across the entire top of the panel to prevent added heat from solar gain. This shield will
also provide a measure of protection to the HMI Touchscreen.
UV Ray Exposure
AccuTrace™ Heat Trace Panels utilize a Touch Screen HMI with LED backlit technology. UV rays are known
to adversely aect these types of touch screens. Valin advises on installing HMI Sunscreens in all outdoor
applications to protect the HMI Touch Screen from damage due to UV ray exposure. See the appendix for the
HMI Sunscreen configuration oered by Valin.
2. CUSTOMER WIRING
WARNING! Failure to comply with Valin instructions on proper heat sink
clearances or panel mounting can result in impaired panel performance,
personal injury, or damage.
WARNING! Equipment is rated for use in Class I. Div II. Groups A, B, C, and D
hazardous environments. Follow all local and national codes applicable to the
installation site.
WARNING! Explosion Hazard. If equipment is installed in a hazardous environment,
do not perform any work until the area has been confirmed to be safe for such
activities or power has been disconnected.
WARNING! Hazardous voltage. Installation and wiring must be performed by
qualified and experienced personnel. All wiring must be in accordance with the
all local and National Electric Codes. Failure to do so may result in damage to
equipment, injury, and/or death.

Multizone Heat Trace Control Panel | Valin Corporation
INSTALLATION
Hardware
Refer to Figure 2-1 below for terminal locations. Each section will have an electrical schematic for specific wiring.
Dashed lines signify customer wiring.
Voltage Rating Up to 480VAC, 50/60
Hz
Current Rating 30A per circuit
Number of Circuits Configurable to 48
Ambient Temperature
Rating -4°F to +104°F
Enclosure Rating UL type 3R, 4, 12 (4X
optional)
Equipment Ratings
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FIGURE 2-1

Multizone Heat Trace Control Panel | Valin Corporation
Supply Power Wiring (Figure 2-2)
• Torque value 120 lb-in (13.5 Nm) for MCB lugs, neutral distribution bar, and ground lugs.
• Use min 1/0 AWG copper conductors for feeder circuit only. Use 2 AWG min for ground. Minimum 75˚C.
• Power Input provided by customer.
INSTALLATION
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*REFER TO ELECTRICAL SCHEMATIC PROVIDED BY VALIN FOR
POWER SUPPLY WIRING, PER CONFIGURED MODEL.

Multizone Heat Trace Control Panel | Valin Corporation
INSTALLATION
RTD Wiring (Figure 2-3)
• Torque value 4.5 lb-In (0.5 Nm).
• Use copper conductors only, 300V
min, 75˚C min.
• Wire strip length 7.5mm.
• 30-14 AWG.
• RTD 3 wire, platinum 100 .
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ELECTRICAL SCHEMATIC

Multizone Heat Trace Control Panel | Valin Corporation
Load Wiring (Figure 2-4)
• Torque value 16 lb-in (1.8 Nm).
• Use copper conductors only, 300V min, 75˚C min.
• 8-22 AWG Cu, per application rating
INSTALLATION
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ELECTRICAL SCHEMATIC

Multizone Heat Trace Control Panel | Valin Corporation
INSTALLATION
Ethernet Communications
• Full IEEE 802.3 Compliance
• Four 10/100BaseTX RJ-45 Ports
• Standard shielded connector RJ-45 female jack, with speed and link activity LED indicators.
• Up to 1.0Gb/s Maximum Throughput
FIG. 2-5
Fiber Length 2km* 15km** 40km** 80km**
TX Power Min -19dBm -15dBm -5dBm -5dBm
RX Sensitivity Max -31dBm -31dBm -34dBm -34dBm
Wavelength 1310nm 1310nm 1310nm 1550nm
Fiberoptic Communications
* Multimode Fiber Optic Cable
** Singlemode Fiber Optic Cable
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Multizone Heat Trace Control Panel | Valin Corporation
OPERATION
FIG 3-1 FIG 3-2
Security Levels
Menu Administrator Maintenance Operations
Process Control Full access Full access No access to Setup
Alarms Full access Full access No access to Setup
Date & Time Full access Full access No access
GFEP Test Full access Full access No access
Communications Full access No access No access
Password Settings Full access No access No access
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3. OPERATION
Getting Started
Upon powering up, the AccuTrace™ HMI will display a splash screen (Figure 3-1). Once initialization is complete,
the Home Screen (Figure 3-2) will appear.
Security and Logging In
In order to view or edit the parameters, AccuTrace™ requires a log in based on the personnel accessing it. There
are 3 levels of access available. Below is a chart describing the security levels. Only the Home Screen may be
viewed without logging in.

Multizone Heat Trace Control Panel | Valin Corporation
OPERATION
1. To log in, press the “LOG IN” button on
the Home Screen. This will display the Password
Entry Window.
2. In the Password Entry Window, enter the
password required for the security level being
accessed.
The default passwords are listed below.
Some menus require a specific security level
to access. This level will be listed next to the
password entry field.
It is recommended that the administrator changes
the passwords upon first start up. Refer to
Password Settings Menu section on page 28 for
instructions.
FIG. 3-3
FIG. 3-4
Default Passwords
Administration Ma intenance Operations
3333 2222 1111
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Multizone Heat Trace Control Panel | Valin Corporation
OPERATION
3. Press “ENT” on the keypad after the
password has been entered. If login was successful,
this will return the user to the Home Screen.
If no changes occur and the Password Entry
Window remains, incorrect credentials were
entered.
4. To log out, press the “LOG OUT” button
in the bottom right corner of the Home Screen.
It is strongly recommended to log out after
operation on the HMI is complete.
FIG. 3-5
FIG. 3-6
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Multizone Heat Trace Control Panel | Valin Corporation
OPERATION
Menu Hierarchy
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