nvent RAYCHEM ACS-30 Operating instructions

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Raychem-AR-H58692-ACS30UIT2Programming-EN-1805
PROGRAMMING GUIDE
ACS- System

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CONTENTS
1. Section 1 – Introduction 5
1.1. ACS-30 .....................................................................................................................................................5
1.1.1. PRODUCT OVERVIEW ............................................................................................................5
1.1.2. CONTROL .................................................................................................................................5
1.1.3. MONITORING AND ALARMING............................................................................................ 5
1.1.4. GROUND-FAULT PROTECTION ............................................................................................6
1.1.5. INSTALLATION .......................................................................................................................6
1.1.6. COMMUNICATIONS ...............................................................................................................6
1.1.7. COMPLETE SYSTEM..............................................................................................................6
1.1.8. ACS-30 PROGRAMMING GUIDE.......................................................................................... 6
1.2. Important Information ..........................................................................................................................7
1.3. License Agreement................................................................................................................................7
1.3.1. ACS-30 SOFTWARE – LICENSE AGREEMENT .................................................................7
1.4. User Responsibilities...........................................................................................................................10
1.5. Safety Warnings...................................................................................................................................10
1.6. Technical Support................................................................................................................................10
1.7. Starting the ACS-30.............................................................................................................................10
1.7.1. INITIAL SETUP.......................................................................................................................10
1.7.2. SYSTEM REQUIREMENTS ..................................................................................................10
1.8. Control Mode Matrix ...........................................................................................................................10
1.9. Software Organization........................................................................................................................12
1.10. Windows................................................................................................................................................14
1.10.1. NAVIGATIONAL HEADER.....................................................................................................14
1.10.2. MAIN MENU WINDOW.........................................................................................................14
2. Section 2 – System Conguration 17
2.1. Initializing the System.........................................................................................................................17
2.1.1. SETTING UP GENERAL SYSTEM PARAMETERS ...........................................................18
2.1.2. SETTING TIME AND DATE ..................................................................................................19
2.1.3. SCANNING THE NETWORK................................................................................................19
2.1.4. MAIN WINDOW .....................................................................................................................21
2.2. Setup Window ......................................................................................................................................22
2.2.1. ASSIGNING CIRCUIT IDENTIFICATION ............................................................................22
2.2.2. ASSIGNING CONTROL MODE ............................................................................................23
2.2.3. ASSIGNING AND SHARING RTD CONTROL AND MONITORING ................................26
2.2.4. SETUP|ALARM.......................................................................................................................29
2.2.5. SETUP|G.F...............................................................................................................................29
2.2.6. SETUP|VOLTAGE ...................................................................................................................30
2.2.7. SETUP|MAINT........................................................................................................................31
2.3. Status|Circuit Window ........................................................................................................................32
2.4. Status|RTDs Window ..........................................................................................................................33
2.5. Status|Min/Max Window....................................................................................................................34
2.6. Status|Energy Window........................................................................................................................35
2.7. Status|Maint. Window ........................................................................................................................38
2.8. Events Window.....................................................................................................................................39
2.9. Network|Relays Window ....................................................................................................................41
2.10. Network|RTDs Window.......................................................................................................................41
2.11. Network|Maint. Window.....................................................................................................................42
2.12. Network|Remove Window..................................................................................................................42
2.13. System|Relays Window ......................................................................................................................43
2.14. System|Comm Window......................................................................................................................43
2.15. System|Password Window................................................................................................................45
2.16. System|Maint. Window.......................................................................................................................46

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3. Control Mode Congurations 47
3.1. Unassign Mode ....................................................................................................................................48
3.2. HWAT Mode..........................................................................................................................................48
3.2.1. ENTER SYSTEM INFORMATION........................................................................................48
3.2.2. CONFIGURING HWAT ..........................................................................................................51
3.3. Frost Heave Mode ...............................................................................................................................55
3.4. Floor Heating Mode.............................................................................................................................59
3.5. Pipe Freeze Mode................................................................................................................................64
3.5.1. TEMP CONTROL – AMBIENT CONTROL .........................................................................64
3.5.2. TEMP CONTROL – LINE CONTROL..................................................................................69
3.5.3. TEMP CONTROL – PASC CONTROL.................................................................................73
3.6. Fuel Oil Mode........................................................................................................................................79
3.6.1. TEMP CONTROL – AMBIENT CONTROL .........................................................................79
3.6.2. TEMP CONTROL – LINE CONTROL..................................................................................83
3.6.3. TEMP CONTROL – PASC CONTROL.................................................................................88
3.7. Greasy Waste and Temperature Maintenance Mode...................................................................93
3.8. Roof and Gutter De-icing Mode ........................................................................................................98
3.8.1. TEMP CONTROL – EXTERNAL DEVICE CONTROL .......................................................98
3.8.2. TEMP CONTROL – AMBIENT TEMPERATURE CONTROL ........................................ 102
3.8.3. TEMP CONTROL – BRACKETED AMBIENT TEMPERATURE CONTROL ................ 105
3.8.4. TEMP CONTROL – SURFACE TEMPERATURE CONTROL ....................................... 109
3.9. Snow Melting Mode ......................................................................................................................... 113
3.9.1. TEMP CONTROL – EXTERNAL DEVICE CONTROL .................................................... 113
3.9.2. TEMP CONTROL – AMBIENT TEMPERATURE CONTROL ........................................ 117
3.9.3. TEMP CONTROL – SURFACE TEMPERATURE CONTROL ....................................... 121
4. Temperature Monitor Only Circuits 125
4.1. Assigning a Temp Monitor Circuit................................................................................................. 125
4.1.1. SELECTING THE TEMPERATURE MONITORING CIRCUIT........................................ 125
4.1.2. NAMING THE TEMPERATURE MONITORING CIRCUITS........................................... 126
5. Appendices 128
5.1. Appendix 5.1 Proportional Ambient Sensing Control (PASC) Control Mode ........................ 128
5.2. Appendix 5.2 24/7 Scheduler ......................................................................................................... 129
5.3. Appendix 5.3 Connecting External Control Devices................................................................... 132
5.4. TermsandDenitions...................................................................................................................... 137
5.5. Alarm:E-mailNotication ............................................................................................................... 137
5.6. Appendix 5.6 ACS-30 Program Integrator.................................................................................... 138

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1. SECTION 1 – INTRODUCTION
1.1. ACS-30
1.1.1. PRODUCT OVERVIEW
The nVent RAYCHEM ACS-30 Advanced Commercial Control System is a multipoint electronic
control and monitoring system for nVent RAYCHEM and nVent PYROTENAX heating cables. The
ACS-30 supports the following applications: hot water temperature maintenance, freezer frost heave
prevention, floor heating, pipe freeze protection, fuel oil flow maintenance, greasy waste disposal
flow maintenance, roof & gutter de-icing and surface snow melting. The ACS-30 system can control
and monitor up to 260 heating circuits with multiple networked nVent RAYCHEM ACS-PCM2-5
panels. Each ACS-PCM2-5 panel can control up to five individual window circuits. The ACS-30 is
available with five Electromechanical Relays (EMRs) that allow switching up to 30 amperes at 277 V.
Each heating cable circuit can have up to four Resistance Temperature Detector (RTD) sensor inputs
allowing for a variety of combinations of temperature control, monitoring and alarming. When single
circuit extensions are required the nVent RAYCHEM C910-485 controller can be added the ACS-30
network. The C910-485 will allow for assigning two RTD's (local to the C910-485) to the circuit.
ACS-UIT2
RS-485 RS-485RS-485 RS-485
ACS-PCM2-5
C910-485
RMM2 Remote
monitoring module
ACS-PCM2-5 ACS-PCM2-5
ALARM
C910SERIES
SHIFT TEST
BACK ENTER
STATUS
ALARM
OUTPUT
MONITOR CONFIG
PROGRAMMABLE SINGLE POINT
HEAT-TRACING CONTROLLER
Fig. 1.1 ACS-30 System
1.1.2. CONTROL
The ACS-30 is a commercial control system that measures temperatures with 3-wire, 100-ohm
platinum RTDs connected directly to the ACS-PCM2-5, the C910-485 or through optional Remote
Monitoring Modules (RMM2). Each ACS-PCM2-5 accepts up to five RTDs, each C910-485 accepts
two RTD's, and each RMM2 accepts up to eight RTDs. The RMM2s are typically located near the
desired measurement location (RTDs). Multiple RMM2s are networked to the ACS-UIT2, significantly
reducing the cost of RTD field wiring. The ACS-30 system supports up to 260 temperature inputs
via the PCM boards contained within the ACS-PCM2-5 panel. Using RMM2s, an additional 128
temperature inputs can be supported for a maximum of 388 temperature inputs. The ACS-30 can
be configured for On/Off, ambient sensing, and timed duty cycle control modes.
1.1.3. MONITORING AND ALARMING
The ACS-30 can monitor ground-fault, temperature, and current during system operation.
Configurable alarm settings provide options for local or remote alarms. Dry contact relays are
provided for alarm annunciation back to a local LAN, fire control panel or Building Management
System (BMS).
Optional nVent RAYCHEM ProtoNode multi-protocol gateways are available for integrating the
ACS-30 controller into a BACnet® or LonWorks® system.

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1.1.4. GROUND-FAULT PROTECTION
To minimize the danger of fire from sustained electrical arcing if the heating cable is damaged
or improperly installed, and to comply with nVent Building Solutions requirements, agency
certifications, and national electrical codes, ground-fault equipment protection must be used on
each heating cable branch circuit.
The ACS-30 controller provides this protection. Therefore, additional ground-fault protection is
generally not necessary. However, national electrical codes require that in order to prevent
electric shock to personnel, 5-mA, Class A ground-fault protection devices (GFCI’s) are installed
when electric floor heating is used in kitchens and baths. The ACS-3O does not provide this level
of personnel ground-fault protection. For these applications the appropriate GFCI must be installed
in the power distribution panel.
1.1.5. INSTALLATION
The ACS-30 system is programmed using the User Interface Terminal (ACS-UIT2) that has LCD
color touch-screen display technology. The ACS-UIT2 provides a user interface for easy and
efficient programming without keyboards or cryptic labels. The ACS-UIT2 is mounted remotely in a
nonhazardous, indoor or outdoor locations.
Heating cable circuits are connected to the ACS-UIT2 via ACS-PCM2-5 control panels, or C910-
485 controllers. The ACS-PCM2-5 panels and C910-485 controller can be distributed throughout
the installation to where the heating cable circuits are located. The control panels/controllers
should be located adjacent to circuit breaker panels and are connected in series to the ACS-UIT2
with RS-485 cable.
1.1.6. COMMUNICATIONS
The ACS-UIT2 supports the Modbus® protocol and is available with an RS-232, RS-485 or
10/100Base-T Ethernet communication interface. The ACS-30 system may be integrated into
BACnet, Metasys N2 and LonWorks Building Management Systems (BMS) using the ProtoNode
gateway translators available through nVent Building Solutions.
1.1.7. COMPLETE SYSTEM
A complete ACS-30 system consists of an ACS-UIT2 and up to 52 modular power control panels
(ACS-PCM2-5) ready for field connections of power wiring, heat tracing and temperature sensors.
1.1.8. ACS-30 PROGRAMMING GUIDE
This guide assists in the set up and operation of the ACS-30 system.
The ACS-30 software, installed in the ACS-UIT2 (User Interface Terminal), supports the ACS-PCM2-5
power control panels, C910-485 controllers and additional RTD inputs via the RMM2.
The software provides several features to help configure and maintain the nVent RAYCHEM
devices. This document is not intended to provide detailed explanations of the specific features of
each product, but rather to show how to access various parameters within the devices using the
ACS-30 software. Please refer to specific detailed product documentation:
• ACS-PCM2-5 Installation Instructions (H58672)
• ACS-UIT2 Installation Instructions (H58661)
• ACS-UIT2 Modbus Protocol Interface Mapping for ACS-30 Systems (H58685)
• ACS-30 Program Integrator Manual (H58325)
• ProtoNode Installation Instructions (H58622)
• C910-485 Installation, Operation and Maintenance Manual (H58415)

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1.2. IMPORTANT INFORMATION
This manual is a guide for the setup and operation of the ACS-30 Advanced Commercial Control
System, a multipoint electronic control and monitoring system.
Important: All information, including illustrations, is believed to be reliable. Users, however, should
independently evaluate the suitability of each product for their particular application.
nVent Building Solutions makes no warranties as to the accuracy or completeness of the
information, and disclaims any liability regarding its use.
nVent only obligations are those in the nVent Standard Terms and Conditions of Sale for this
product, and in no case will nVent or its distributors be liable for any incidental, indirect, or
consequential damages arising from the sale, resale, use, or misuse of the product. Specifications
are subject to change without notice. In addition, nVent reserves the right to make changes—without
notification to Buyer—to processing or materials that do not affect compliance with any applicable
specification.
1.3. LICENSE AGREEMENT
1.3.1. ACS-30 SOFTWARE – LICENSE AGREEMENT
This agreement is a legal agreement between you, “the end user”, and nVent Thermal
Management, LLC (“nVent Thermal Management”). BY INSTALLING OR OTHERWISE
ACCESSING THIS PROGRAM, YOU ARE AGREEING TO BECOME BOUND BY THE TERMS OF
THIS AGREEMENT. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, DO NOT
INSTALL OR ACCESS THIS PROGRAM. IF INSTALLING OR OTHERWISE ACCESSING THIS
PROGRAM BY OPENING A SEALED DISK PACKAGE, PROMPTLY RETURN THE UNOPENED
DISK PACKAGE AND THE OTHER ITEMS (INCLUDING WRITTEN MATERIALS OR OTHER
CONTAINERS) TO THE PLACE WHERE YOU OBTAINED THEM.
1. GRANT OF LICENSE The ACS-30 Software (the “Software”) is licensed, not sold, to you for use
only under the terms of this Agreement, and nVent reserves any rights not exactly granted to
you. Subject to the terms and conditions of this Agreement, nVent grants to you a non-exclusive,
nontransferable, limited license (without the right to sublicense others) to use the one copy,
including written materials if any, of the Software on a single computer at the location (company
and address) to which nVent issued this copy of the ACS-30 Software. The Software is owned
by nVent and is protected by United States copyright laws and international treaty provisions. All
copies made by you are subject to the terms and conditions of this Agreement. The structure,
organization and code of the Software are valuable trade secrets and confidential information
of nVent. You agree not to modify, alter, merge, adapt, duplicate, distribute, translate, decompile,
disassemble, reverse engineer, create derivative works, copy for use on any other computer or
at any other location, or otherwise make this software available to any person or entity outside
this location. The Software is licensed only to you. In no event may you transfer, sell, sublicense,
rent, assign or transfer rights, lease, or otherwise dispose of the Software on a temporary or
permanent basis without the prior written consent of nVent. You agree to use reasonable efforts
to protect against the unauthorized copying and use of the Software by others. You agree not
to remove, disable or circumvent any proprietary notices or labels contained on or within the
Software.
2. OTHER RESTRICTIONS
1. You may not sublicense, rent or lease the ACS-30 Software to anyone.
2. You agree to notify nVent promptly if “bugs” or seemingly incorrect or anomalous behavior
is discovered when using the Software.
3. You agree that the ACS-30 Software, including written materials (if any) and all copies in
whole or in part, will be destroyed or returned to nVent at the written request of the nVent
product manager.

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4. By installing or otherwise accessing the ACS-30 Software you acknowledge that you
have read and understood nVent Disclaimer of Warranty and Limitation of Liability,
set forth below.
5. You agree to use reasonable efforts to protect against the unauthorized copying and use the
ACS-30 Software by others.
DISCLAIMER OF WARRANTY THE ACS-30 SOFTWARE AND ACCOMPANYING WRITTEN
MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND. THE ENTIRE RISK
AS TO THE RESULTS AND PERFORMANCE OF THE ACS-30 SOFTWARE IS ASSUMED BY
YOU. NVENT DOES NOT WARRANT THAT THE FUNCTIONS CONTAINED IN THE SOFTWARE
WILL MEET YOUR REQUIREMENTS OR THAT THE OPERATION OF THE SOFTWARE WILL BE
UNINTERRUPTED OR ERROR-FREE, OR THAT PROGRAM DEFECTS WILL BE CORRECTED.
LIMITED WARRANTY – MEDIA THE MEDIUM ON WHICH THE PROGRAM IS ENCODED IS
WARRANTED TO BE FREE FROM DEFECTS IN MATERIAL AND WORKMANSHIP UNDER
NORMAL USE FOR A PERIOD OF SIXTY (60) DAYS FROM THE DATE OF DELIVERY TO YOU
AS EVIDENCED BY A COPY OF YOUR RECEIPT. ALTHOUGH NVENT BELIEVES THE MEDIA
AND THE PROGRAM TO BE FREE OF VIRUSES, THE MEDIUM AND THE PROGRAM ARE NOT
WARRANTED TO BE VIRUS FREE. NVENT LIABILITY AND YOUR EXCLUSIVE REMEDY IF THE
MEDIUM IS DEFECTIVE OR INCLUDES ANY VIRUS SHALL BE PROMPT REPLACEMENT OF THE
MEDIUM WITH A NEW ACS-30 SOFTWARE PRE-ENCODED DISC.
EXCLUSION OF ALL OTHER WARRANTIES EXCEPT AS EXACTLY PROVIDED ABOVE, NVENT
DISCLAIMS ALL WARRANTIES, EITHER EXACT, IMPLIED OR STATUTORY, INCLUDING BUT
NOT LIMITED TO ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, EVEN IF NVENT HAS BEEN ADVISED OF SUCH PURPOSE. THIS AGREEMENT
GIVES YOU SPECIFIC LEGAL RIGHTS. SOME STATES OR COUNTRIES DO NOT ALLOW THE
EXCLUSION OF WARRANTIES SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU.
LIMITATION OF LIABILITY THE ENTIRE RISK AS TO THE RESULTS AND PERFORMANCE OF THE
SOFTWARE IS ASSUMED BY YOU. IN NO EVENT SHALL NVENT, ITS AFFILIATES, DIRECTORS,
OFFICERS, SHAREHOLDERS, EMPLOYEES OR OTHER REPRE-SENTATIVES BE LIABLE FOR
DAMAGES OF ANY KIND, INCLUDING WITHOUT LIMITATION, ANY LOSS, DAMAGE, OR DELAY,
OR FOR ANY LOST PROFITS, LOSS OF USE, INTERRUPTION OF BUSINESS, OR FOR ANY
COMPENSATORY, SPECIAL, INCIDENTAL, CONSEQUENTIAL, INDIRECT DAMAGES (HOWEVER
ARISING, INCLUDING NEGLIGENCE) OF ANY KIND ARISING OUT OF OR IN CONNECTION
WITH THE USE OF, OR THE INABILITY TO USE, THE SOFTWARE OR THIS AGREEMENT (EVEN
IF NVENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES). FURTHER, IN NO
EVENT SHALL NVENT, ITS AFFILIATES, DIRECTORS, OFFICERS, SHAREHOLDERS, EMPLOYEES
OR OTHER REPRESENTATIVES BE LIABLE TO YOU IN AN AMOUNT GREATER THAN THE
AMOUNT ACTUALLY PAID BY YOU, IF ANY, FOR THE SOFTWARE.
YOU FURTHER AGREE THAT REGARDLESS OF ANY STATUTE OR LAW TO THE CONTRARY, ANY
CLAIM OR CAUSE OF ACTION ARISING OUT OF OR RELATED TO USE OF THE SOFTWARE OR
THE TERMS AND CONDITIONS MUST BE FILED WITHIN ONE (1) YEAR AFTER SUCH CLAIM OR
CAUSE OF ACTION AROSE OR BE FOREVER BARRED.
INDEMNITY. To the extent allowed under federal and state law, you agree to indemnify and hold
nVent, its parents, subsidiaries, affiliates, officers, employees, sponsors and partners harmless
from any claim, loss, cost, expense, demand, or damage, including reasonable attorneys’ fees,
arising directly or indirectly out of (a) your use of, or inability to use, the Software, (b) your
activities in connection therewith, or (c) your breach of this Agreement or violation of the rights
of any other party.
TERMINATION The license granted herein will automatically terminate without notice from nVent
if you fail to comply with any term or condition of this Agreement. You agree, upon such
termination, to remove the ACS-30 Software from any memory and/or storage media or device,
and to return the ACS-30 Software, including all media and written materials, or destroy the
same and certify such destruction to nVent, along with any backup or other copies in your
possession.

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COMPLETE AGREEMENT – MODIFICATION IN WRITING This Agreement constitutes the sole and
complete understanding between the parties with respect to the ACS-30 Software and its use,
and may not be varied except by a writing signed by an officer of nVent. You agree that you may
not rely on any representations concerning the ACS-30 Software to the extent they vary from
this Agreement, and such representations, if any, will neither add to nor vary the terms of this
Agreement.
CHOICE OF LAWS This Agreement is governed by the laws of the State of California and the United
States, including U.S. Copyright Laws.
EXPORT LAWS The ACS-30 Software may require a license from the U.S. Department of
Commerce or other governmental agency before it may be exported. The term “export” includes
many acts (such as transferring the ACS-30 Software to a foreign citizen within the United
States), in addition to sending or taking the ACS-30 Software outside the United States. You
agree to ascertain the necessary licensing procedures and obtain any required licenses before
exporting the ACS-30 Software. You also agree to indemnify nVent and assume all financial
responsibility for any losses it may suffer if you do not comply with this paragraph.
GOVERNMENT RESTRICTED RIGHTS User acknowledges that the ACS-30 Software has been
developed at private expense and is provided with “Restricted Rights.” Use, duplication or
disclosure by the Government is subject to restrictions as set forth in subparagraph (b)(3) and
paragraph (c) of the Rights in Technical Data clause at 48 C.F.R. 252.227-7013, or subparagraphs
(c)(1) and (2) of the Commercial Computer Software – Restricted Rights clause at 48 C.F.R.
52.227-19, as applicable. This provision applies to the ACS-30 Software acquired directly or
indirectly by or on behalf of any government. The ACS-30 Software is a commercial product,
licensed on the open market at market prices, and was developed entirely at private expense
and without the use of any government funds. Any use, modification, reproduction, release,
performance, display, or disclosure of the ACS-30 Software by any government shall be governed
solely by the terms of this Agreement and shall be prohibited except to the extent exactly
permitted by the terms of this Agreement, and no license to the ACS-30 Software is granted to
any government requiring different terms.
ASSIGNMENT You may neither assign any right nor delegate any obligation under this Agreement
and attempted assignment or delegation shall be void. nVent may freely assign this agreement
and its rights and obligations there under to any third party.
INVALID PROVISIONS If any of the provisions of this provisions Agreement are invalid under any
applicable statute or rule of law, they are to that extent deemed omitted.
WAIVER No failure or delay of nVent in exercising or enforcing any right or provision of this
Agreement shall constitute a waiver of such right or provision, or any other right or provision
hereunder. Furthermore, any waiver by nVent of any right or provision of this Agreement shall
not be construed as, or constitute, a continuing waiver of such right or provision, or waiver of
any other right or provision of this Agreement.
HEADINGS The section titles in this Agreement are for convenience only.
SURVIVABILITY You agree that the terms and conditions of this Agreement shall survive any
termination of this Agreement and your rights to use the Software.
Should you have any questions concerning this Agreement, or if you desire to contact nVent for
any reason, please write to:
NVENT THERMAL MANAGEMENT
899 Broadway St.
Redwood City, CA 94063-3104
U.S.A

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1.4. USER RESPONSIBILITIES
The performance, reliability and safety of your heating cable system depend on proper design,
selection, and installation. The ACS-30 Software will help you configure and monitor a system that
meets your requirements, but it is only a tool. It assumes that your input is accurate, that you are
familiar with heating system design and configuration, and that you will ensure that all components
of the heating system are installed, maintained and used as intended. The configuration of the ACS-
30 Software should be reviewed by a knowledgeable engineer to ensure it is appropriate for your
application. Additional information relating to safety, design, and installation is contained in Design
Guides, Installation Manuals, Data Sheets, and other literature available from nVent. Be sure to
consult these documents as needed.
1.5. SAFETY WARNINGS
There are important safety warnings shipped with nVent products and printed in the ACS-UIT2
Installation Instructions (H58661), the ACS-PCM2-5 Installation Instructions (H58672) and in
the ACS-30 Program Integrator User Manual (H58325). Be sure to read and follow these safety
warnings to reduce the risk of fire, shock, or personal injury. If you have any questions, contact your
local representative or contact nVent directly.
1.6. TECHNICAL SUPPORT
For technical support, contact your local representative, or contact nVent directly:
NVENT THERMAL MANAGEMENT
Tel: [phone]
Tel: [phone] (outside U.S.)
Fax: [phone]
Fax: [phone]
email: [email protected]
1.7. STARTING THE ACS-30
1.7.1. INITIAL SETUP
The ACS-30 software is designed to run only on the ACS-UIT2 hardware platform. Prior to shipment,
the ACS-30 software is installed into a nonvolatile area of the ACS-UIT2 memory. During the initial
power-up, you will see a blue background “splash” window for approximately 30 seconds as the
system software is loaded and initializes.
This V7.0.X program update is compatible only with the ACS-UIT2 User Interface Terminal but
will support both ACS-PCM-5 and ACS-PCM2-5 power control modules as well as the C910-485
controller.
1.7.2. SYSTEM REQUIREMENTS
The minimum configuration to use the ACS-30 software is:
• ACS-UIT2
• At least one ACS-PCM2-5
Maximum equipment configuration:
• The ACS-UIT2 can control up to 260 circuits. Each ACS-PCM2-5 handles 5 circuits and
the C910-485 is a single circuit controller. There are 99 address that can be assigned to
ACS-PCM2-5 control panels, C910-485 controllers and RMM2.
• Up to 16 RMM2 (8 channel RTD multiplexing hubs)
1.8. CONTROL MODE MATRIX
The ACS-30 is designed for nVent commercial heating cable systems and their applications. The
programming is focused on eight heating cable applications, and a monitor only mode, with control

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parameters embedded in the software to simplify assigning heating cable circuits. The application
designs and assumptions are detailed in their associated design guides and installation manuals
which can be found on www.nVent.com.
The control mode functions programmed in the ACS-30 for each application are summarized in
Table 1.1. These control modes will be discussed in more detail in the configuration section of this
programming guide.
TABLE
1.1ACS-30: HEATING CABLE APPLICATION PROGRAMMING SUMMARY
CONTROL MODE FUNCTIONS
APPLICATION NVENT RAYCHEM
HEATING CABLE CONTROL MODE CONTROL SETPOINTS
Hot Water Temperature
Maintenance
• HWAT • Preset power duty cycle
• (HWAT Design Wizard)
• Constant temp
• Variable schedule
- Maintain
- Economy
- Off
- Heat Cycle (R2 only)
Floor Heating • RaySol
• MI heating cable
• Floor sensing • Constant temp
• Variable schedule
- Maintain
- Economy
- Off
• Circuit override through
RTD or external device
Greasy Waste Disposal and
Temperature Maintenance
• XL-Trace • Line sensing • Constant temp
• Variable schedule
- Maintain
- Economy
- Off
Pipe Freeze Protection • XL-Trace • Ambient, PASC or
line sensing
• Constant temp
• Circuit override through
external device
Fuel Oil Flow Maintenance • XL-Trace • Ambient, PASC or line
sensing
• Constant temp
• Circuit override through
RTD or external device
Freezer Frost Heave Prevention • RaySol
• MI heating cable
• Floor sensing • Constant temp
• Variable schedule
- Maint
Surface Snow Melting • ElectroMelt
• MI Heating Cable
• Ambient or surface temp • Constant temp
• External controller • External snow controller
Roof & Gutter De-icing • IceStop
• MI Heating Cable
• Ambient or surface temp • Constant temp
• External controller • External snow controller
Temperature Monitor Only
Five temperature monitor only channels
Low and high temperature alarms
Variable Schedule
Setpoint calendar with:
• 7 days/week calendar
• 48 1/2-hr time blocks/day
• Daily schedule copy function

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1.9. SOFTWARE ORGANIZATION
The ACS-30 is organized around the concept of heating control circuits connected to relay outputs
from the ACS-PCM boards within the ACS-PCM2-5 power control panels. A simple circuit consists
of one output relay and one RTD sensor input.
LC = Line currentGF = Ground fault
ACS-PCM2-5 / Circuit #
1
LC
GF Output
Relay 1
Local/A
RTD
2
LC
GF Output
Relay 2
Local
RTD
3
LC
GF Output
Relay 3
Local
RTD
4
LC
GF Output
Relay 4
Local
RTD
5
LC
GF Output
Relay 5
Local
RTD
Fig. 1.2 Simple control circuit
Heating control circuits can also be connected to the dry contact output of BMS systems, external
monitoring devices or moisture sensing controllers for roof & gutter and snow melting applications.
Refer to Appendix 5.3 Connecting External Control Devices on page 130 for more detailed
information.
LC = Line current GF = Ground fault
ACS-PCM2-5 / Circuit #
1
LC
GF Output
Relay 1
Local/A
RTD
2
LC
GF Output
Relay 2
Local
RTD
3
LC
GF Output
Relay 3
Local
RTD
4
LC
GF Output
Relay 4
Local
RTD
5
LC
GF Output
Relay 5
Local
RTD
External Override device,
BMS output or snow controller
EUR-5A
APS-3C
GIT-3A*
LCD-7A
* Requires external dry contact.
Dry
alarm
contact
Fig. 1.3 External control circuit

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Raychem-AR-H58692-ACS30UIT2Programming-EN-1805
LC = Line current
GF = Ground fault
ACS-PCM2-5 / Circuit #
1
LC
GF Output
Relay 1
Local/A
RTD
2
LC
GF Output
Relay 2
Local
RTD
3
LC
GF Output
Relay 3
Local
RTD
4
LC
GF Output
Relay 4
Local
RTD
5
LC
GF Output
Relay 5
Local
RTD
Additional RTDs
ACS-UIT2
B #1
C 2
D 3
4
5
6
7
8
RS-485
RMM2
Fig. 1.4 Multiple RTD input control circuit
A circuit may also be controlled by multiple RTD inputs by adding a RMM2 module to the network.
Multiple RTDs may be used for control or monitoring of a heating circuit.
1
LC
GF Output
Relay 1
Local/A
RTD
2
LC
GF Output
Relay 2
Local
RTD
3
LC
GF Output
Relay 3
Local
RTD
4
LC
GF Output
Relay 4
Local
RTD
5
LC
GF Output
Relay 5
Local
RTD
B #1
C 2
D 3
4
5
6
7
8
RMM2
1
LC
GF Output
Relay 1
Local/A
RTD
Local/A RTD
Local/B RTD
2
LC
GF Output
Relay 2
Local
RTD
3
LC
GF Output
Relay 3
Local
RTD
4
LC
GF Output
Relay 4
Local
RTD
5
LC
GF Output
Relay 5
Local
RTD
ACS-PCM2-5
/ Circuit #
ACS-PCM2-5
/ Circuit #
Additional
RTDs
RS-485
RS-485
ACS-UIT2
C910-485
RS-485
RS-485
Fig. 1.5 Multiple ACS-PCMs, C910-485 and RMM2
More advanced systems can have multiple heating circuits sharing RTDs for control and monitoring.

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1.10. WINDOWS
Fig. 1.6 Window layout
The top row of the window contains the main menu buttons, and the bottom row contains subsets
of those main menu buttons.
When asked to navigate between windows in this manual, tap the main menu and submenu buttons.
1.10.1. NAVIGATIONAL HEADER
At the top of the Setup and Status windows, a navigational header displays the following data (from
left to right):
A. ID tag “Hot water line 1”
B. ACS-PCM2-5 address “01”
C. Relay output number “1”
D. Application control mode “HWAT”
Fig. 1.7 Navigational header
1.10.2. MAIN MENU WINDOW
The main menu window displays the status of all circuits (PCM/relay numbers) that have been set
up. The circuits can be accessed from this window by tapping anywhere on the row for the circuit. If
the circuit is unassigned tapping on the row will allow you to set the control mode and parameters.
If it is already assigned tapping on the row will allow you to edit the control mode and parameters.

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Raychem-AR-H58692-ACS30UIT2Programming-EN-1805
Fig. 1.8 Main window with circuit status
The main window displays:
Status Time and Date: The current time and date is displayed
Ckt# Displays the connected ACS-PCM2-5 power panels and the pre-
assigned circuit number for each of their five relays (e.g. 1-1, 1-2,
1-3, 1-5) C910-485 controllers will only show a single circuit number
ID Identification tag for the circuit
Mode Displays the application control mode for the circuit. Refer to keep
together on one line and the associated nVent product design guide for
further information concerning the application.
N/A Circuit has not been set up and is unassigned
HWAT Circuit has been set up for a hot water maintenance application.
Frost heave Circuit has been set up for a freezer frost heave application.
Floor heating Circuit has been set up for a floor heating application
Pipe freeze Circuit has been set up for a pipe freeze protection application
Fuel Oil Circuit has been set up for a fuel oil flow maintenance application
Greasy waste/TM Circuit has been set up for a greasy waste flow maintenance
application or non-freeze protection temperature maintenance
applications.
RFGT Circuit has been set up for roof & gutter de-icing.
SMLT Circuit has been set up for snow melting.
TMON Temperature monitoring only has been set up, no relay or circuit is
dedicated.
°F or °C The current lowest measured temperature of any RTD assigned to
monitor the circuit
SetP Desired maintain/control temperature setpoint
Amps Heating cable circuit current draw (A)
G.F. Heating cable ground-fault current (mA)
Status Relay (on, off or ground-fault trip) and communication status (Com)
Color Coding of Main Window
The data in the °F/°C, Amps, and G.F. columns are displayed in color to identify their current state.
Green When heating cable is energized (status On), within normal range of
setup parameters
Red In alarm condition

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Orange Temperature not within setpoint plus deadband range (°F/°C)
Note: This is not applicable for the HWAT control mode.
Alarm Relay Status
Green No alarm
Red In alarm condition
Note: ACS-30 Program Integrator has been developed to pre-assign the circuits and control
variables, see Appendix 5.6 ACS-30 Program Integrator on page 137.
Main Window and Events Navigation
Navigation Buttons
At the bottom of the Main window and Events window, the navigation buttons will appear once six
circuits are displayed. Use buttons to scroll up and down to view the status of the circuits on the
Main window, and on the Events/Alarms on the Events window.
When in the Main or Events windows, tap on anywhere on a row for a circuit to see the Status
window for that circuit.
Fig. 1.9 Main window and navigation buttons
TABLE 1.2 NAVIGATION BUTTONS
Top of list When selected, displays the first five circuits of the Main and the
Events windows.
Page up When selected, displays the previous five circuits of the Main and
the Events windows.
Move up one
circuit
When selected, displays the previous circuit on the Main and the
Events windows.
Move down one
circuit
When selected, displays the next circuit on the Main and the Events
windows.
Page down When selected, displays the next five circuits of the Main and the
Events windows.
Bottom of list When selected, displays the last five circuits of the Main and the
Events windows.

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2. SECTION 2 – SYSTEM CONFIGURATION
2.1. INITIALIZING THE SYSTEM
When the ACS-UIT2 is first powered, it will display the Start-up window showing the program
loading progress.
Fig. 2.1 Initial ACS software loading display window
When the ACS-UIT2 is powered on for the first time, date and units will not been assigned. In
addition, the ACS-UIT2 has not yet scanned the network for connected external devices such as
ACS-PCM2-5 Heat-Trace Control Panels (containing the ACS-CRM card rack modules), C910-485
controllers and RMM2 RTD multiplexing hubs.
Fig. 2.2 Start-up window with no devices detected

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2.1.1. SETTING UP GENERAL SYSTEM PARAMETERS
Tap System|Misc to enter the appropriate units and general system parameters.
Fig. 2.3 System|Misc window
The System|Misc window provides the following controls:
Units: Select Fahrenheit (ºF) or Celsius (ºC) as temperature units.
Screen Saver Timer: Select the number of minutes the display remains visible with no user activity
before moving into Screen Saver mode. The Screen Saver mode turns the screen to black (no
backlight) and no alarms will be visible.
If an alarm occurs, a red light on the front of the enclosure illuminates. The window must be
touched to show the circuit’s alarm status.
IMPORTANT: Using the screen saver enhances the lifetime of the screen.
Range: 1–300 minutes
Default: 20 minutes
Main Menu Timer: Sets the number of minutes before the display automatically reverts to the Main
window.
Range: 1–100 minutes
Default: 10 minutes
Note: This time entry also determines how long a password entry will remain valid (see
System|Password section)
Mouse: Allows the USB port on the ACS-UIT2 to function with a mouse installed. If enabled, a
mouse pointer will be visible on the UIT window and will allow the user to navigate through the
windows.
Options: OFF, ON
Default: OFF
Stagger Start: Set the time delay for energizing each relay in a ACS-PCM2-5 panel, C910-485
controllers to reduce the additive start-up current load for the system.
Range: 0–30 minutes
Default: 0 minutes

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Raychem-AR-H58692-ACS30UIT2Programming-EN-1805
2.1.2. SETTING TIME AND DATE
Tap System|Clock to set the time and date.
Fig. 2.4 System|Clock window
Time: Enter the current time using 24 hour format
Date: Enter the correct date from the pop-up calendar
2.1.3. SCANNING THE NETWORK
After the ACS-UIT2 is connected to the external ACS-PCM2-5 modular power control panels, C910-
485 controllers and any RMMs via the RS-485 network, and all circuits have been installed and
commissioning tests completed, the ACS-UIT2 is ready to scan the network for connected devices.
Tap Network|Device. The first time the system is started this list will be empty.
Fig. 2.5 Update Network button
Tap the Update Network button to start the network scan. A progress bar will be displayed as the
system scan proceeds

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Fig. 2.6 Scanning network
The program scans for Device Addresses for the ACS-CRM board in the ACS-PCM2-5 panels,
attached RTDs, C910-485 Controllers, RMM2 modules, and creates a database within the system.
Once the database exists, no further scanning is done. A device address is the number assigned
via the rotary switches on the ACS-PCM2-5 panel or RMM2 circuit board. Each device must have
a unique device address number. For example, if the design requires both an ACS-PCM2-5 and
a RMM2, and 32 is chosen for device address number for the ACS-CRM, then the RMM2 cannot
also use address 32. (See Table 2.1 Available Device Addresses on page 25). See the ACS-PCM2-5
Installation Instructions (H58238), C910-485 Installation Instructions (H58415) and RMM2
Installation Instructions (H56848) for more information.
To set the modbus address for a C910-485 controller, reference C910-485 Installation Instructions
(H58415).
Fig. 2.7 Network|Device window after system scan
Verify that all of the expected hardware devices were found by checking the Network|Device display.
If a device appears to be missing, manually initiate a new scan by taping the Update Network
button. If an expected device does not appear on the list after several scans, it is most likely
physically disconnected from the RS-485 network wiring, or is not powered. Troubleshoot and verify
all network and power connections.
Note: If a new external hardware device is added after the initial manual scan, you must initiate a
new scan by going to the Network|Device window and tapping the Update Network button.