The PowerCommand Network can be used to remotely operate power transfer equipment (e.g.,
transfer switches, paralleling systems) and start
and stop generator sets. All of the safety precautions for that equipment must be observed. Refer to
the Operator’s Manual for the equipment that is being monitored and controlled by the network for important safety precautions.
The following symbols, found throughout this
manual, alert you to potentially dangerous conditions to the operator, service personnel, or the
equipment.
DANGER
hazards which will result in severe personal injury or death.
WARNING
unsafe practice which can result in severe personal injury or death.
CAUTION
unsafe practice which can result in personal injury or product or property damage.
This symbol warns of immediate
This symbol refers to a hazard or
This symbol refers to a hazard or
MOVING PARTS CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH
Keep your hands, clothing, and jewelry away
from moving parts.
Before starting work on the generator set, dis-
connect battery charger from its AC source,
then disconnect starting batteries, negative (-)
cable first. This will prevent accidental starting.
Make sure that fasteners on the generator set
are secure. Tighten supports and clamps, keep
guards in position over fans, drive belts, etc.
Do not wear loose clothing or jewelry in the vi-
cinity of moving parts, or while working on electrical equipment. Loose clothing and jewelry
can become caught in moving parts. Jewelry
can short out electrical contacts and cause
shock or burning.
If adjustment must be made while the unit is
running, use extreme caution around hot manifolds, moving parts, etc.
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH
Remove electric power before removing protective shields or touching electrical equipment. Use rubber insulative mats placed on dry
wood platforms over floors that are metal or
concrete when around electrical equipment.
Do not wear damp clothing (particularly wet
shoes) or allow skin surface to be damp when
handling electrical equipment.
Use extreme caution when working on electri-
cal components. High voltages can cause injury or death. DO NOT tamper with interlocks.
Follow all applicable state and local electrical
codes. Have all electrical installations performed by a qualified licensed electrician. Tag
and lock open switches to avoid accidental closure.
Jewelry is a good conductor of electricity and
should be removed before working on electrical equipment.
xi
Copyright 2017 Cummins Inc.
MEDIUM VOLTAGE GENERATOR SETS
(601V to 15kV)
Medium voltage acts differently than low volt-
age. Special equipment and training is required
to work on or around medium voltage equipment. Operation and maintenance must be
done only by persons trained and qualified to
work on such devices. Improper use or procedures will result in severe personal injury or
death.
Do not work on energized equipment. Unau-
thorized personnel must not be permitted near
energized equipment. Due to the nature of medium voltage electrical equipment, induced
voltage can remain even after the equipment is
disconnected from the power source. Plan the
time for maintenance with authorized personnel so that the equipment can be de-energized
and safely grounded.
TRANSFER SWITCHES
AC and DC voltages in the transfer switch com-
ponents present serious shock hazards that
can result in severe personal injury or death.
Read and follow these instructions.
Keep the transfer switch cabinet closed and
locked. Make sure only authorized personnel
have cabinet and operational keys.
Due to the serious shock hazard from medium
voltages within the cabinet, all service and adjustments to the transfer switch must be performed only by an electrician or authorized service representative.
If the cabinet must be opened for any reason:
1. Move the operation selector switch on the
generator set to Stop.
2. Disconnect battery charger from its AC
source. Disconnect the starting batteries
of the generator set. (Remove the negative [−] lead first to prevent arcing from igniting explosive battery gas.)
3. Remove AC power to the automatic transfer switch. If the instructions require otherwise, use extreme caution due to the danger of shock hazard.
GENERAL SAFETY PRECAUTIONS
The PowerCommand Network allows remote
operation of equipment. PowerCommand Software for Windows can remotely start and stop a
genset or exercise a transfer switch. Network
modules can independently control other network modules and operate other electrical devices such as fans or pumps etc. Make certain
that all appropriate personnel are notified before remotely operating equipment and make
them aware of any equipment that can be energized automatically.
Do not work on this equipment when mentally
or physically fatigued, or after consuming any
alcohol or drug that makes the operation of
equipment unsafe.
Use only the latest physical and logical connec-
tion diagrams for installing and maintaining the
PowerCommand Network. If changes are
made to the physical or logical network connections, make sure the site connection diagrams are updated. Create a new CSV file if the
number or type of modules changes or if the
bindings change.
Copyright 2017 Cummins Inc.
xii
1. Introduction
ABOUT THIS MANUAL
This manual covers the PowerCommandR FT-10
Network installation, setup, and service information. The PowerCommand FT-10 Network is an
Echelon
trol network. This manual is intended for use by
trained network installers and operators.
Sections 1 and 2 provide an overview of this manual, the expected technical background of the installer/operator, the required hardware and software
tools, installation guidelines, and some basic network concepts.
Section 3 describes creating a self-installed network using auto-binding of devices. It includes
guidelines for a self-installed network. If these
guidelines cannot be met, the network must be
installed using LonMakert software.
Section 4 describes the logical installation and con-
nection of the various modules on the network using
LonMaker software. This section also describes
network testing and service procedures using LonMaker.
Much of the material in Section 4 is derived from the
Echelon LonMaker Installation Tool Users Guide.
The Echelon manual is included with the LonMaker
software, and should be considered a reference
companion to this manual.
Section 5 describes using Plug-Ins with LonMaker
software to configure devices. This program is used
to complete the network installation by performing
R
LONWORKSR based local operating con-
several functions including setting network settings
for each device.
Section 6 describes using InPowert to configure
devices. This program is used to complete the network installation by performing several functions including setting device network settings.
Section 7 describes monitoring network devices
using PowerCommand for Windows
R
II (PCW II)
software.
Sections 8 thru 20 describe individual modules,
routers, the SLTA-10 Gateway, the ModLon Gateway, and the Junction Box/Terminator on the PowerCommand Network and provide procedures for
locating, mounting, and wiring these devices
(physical installation). As new devices are made
available, they will be added to this manual.
A glossary of network terms, troubleshooting information, and installation aids (application notes, wiring diagrams, bindings, and network variables), are
included in the Appendices at the back of this manual.
Use normal and necessary safety precautions before starting any service procedures. Identify all
hazards by referring to the Safety Precautions section and observing all warnings and cautions within
the manual. When troubleshooting, remember that
the PowerCommand Network, generator set, transfer switch, and utility power source are all interdependent.
Keep this manual where it will be readily available to
the network installer and operator.
WARNING
THE GENSET, TRANSFER SWITCH, AND OTHER EQUIPMENT ASSOCIATED WITH THE POWERCOM-
MAND NETWORK WILL NOT FUNCTION PROPERLY, OR WILL NOT BE SUBJECT TO PROPER MONITORING AND SERVICE, UNLESS THE INSTRUCTIONS IN THIS MANUAL ARE FOLLOWED IN DETAIL.
IMPROPER FUNCTIONING CAN RESULT IN SEVERE PERSONAL INJURY, DEATH, AND/OR EQUIPMENT DAMAGE. SERVICE PERSONNEL MUST HAVE THE REQUIRED INSTALLATION TOOLS AND
BE TRAINED AND EXPERIENCED TO PERFORM NETWORK INSTALLATIONS, INCLUDING USE OF
INSTALLATION SOFTWARE, AND BE ABLE TO PERFORM ELECTRICAL AND MECHANICAL SERVICE. READ THIS ENTIRE MANUAL BEFORE STARTING.
Cummins and PowerCommand are registered trademarks of Cummins Inc.
Echelon and L
LonMaker is a trademark of Echelon Corporation.
InPower is a trademark of Onan Corporation.
Windows is a registered trademark of Microsoft Corporation.
PartitionMagic is a registered trademark of PowerQuest Corporation.
ONWORKS are registered trademarks of Echelon Corporation.
1-1
Copyright 2017 Cummins Inc.
REQUIRED BACKGROUND
To use this manual, you need:
Experience and familiarity with generator set
installation and service.
A basic understanding of control networks.
Experience and familiarity with personal com-
puters and using a mouse.
Experience and familiarity with DOS, and Win-
dows-type graphical user interfaces.
Experience and familiarity with the organiza-
tion of disk drives, directories, subdirectories,
files, and path names.
REQUIRED INSTALLATION TOOLS
In additional to conventional tools and all system
components and cabling, you need the following
tools and manuals to install a PowerCommand
work:
PowerCommand Network Support CD (part
number 326−5706) − includes the following:
− Cummins Inc. Device Stencil
− Resource Files
− .XIF Files
− .NXE Files
− Plug-Ins
Echelon
LonMaker for Windows, version 3.1
software
InPower, version 3.0
PC with Pentium II 350 or better
VGA monitor (color or gray scale) and video
card
Windows 2000 or Windows NT 4.0 with Service
Pack 3
64 MB of conventional RAM
225 MB of available hard disk storage
CD ROM drive
Serial port, Network Gateway, cable, and driver
software or PCC-10 network interface card,
cables, connectors, PCMCIA-II Slot, and driver
software
Microsoft-compatible mouse and mouse driver
software
Net-
The LonMaker Installation Tool Users Guide
(provided with LonMaker)
To test the PowerCommand Network before leaving
the site, the following tools will be needed:
A Network Gateway Module or a PCC-10 card,
cables, and PCMCIA-II Slot
InPower version 3.0
LonMaker for Windows, version 3.1
New and Old Versions of LonMaker
IMPORTANT! Installing LonMaker 3.1 for Windows
on the same computer as LonMaker 2.02 for DOS
can cause software problems.
If enough space is available on the hard drive,
R
PartitionMagic
can be used to separate the
two versions of software.
If not enough space is available on the hard
drive, install LonMaker for Windows and its operating software companions on a separate
hard drive.
HOW TO OBTAIN SERVICE
When the equipment requires service, contact the
nearest dealer or distributor. Factory-trained Parts
and Service representatives are ready to handle all
your service needs.
To contact your local Cummins Inc. distributor in the
United States or Canada, call 1-800-CUMMINS
(1−800−286−6467).
If you are unable to contact a distributor using the
automated service, consult the Yellow Pages. Typically, our distributors are listed under:
Generators-Electric,
Engines-Gasoline or Engines-Diesel, or
Recreational Vehicles-Equipment,
Parts and Service.
For outside North America, call Cummins Inc.,
1-763-574-5000, 7:30 AM to 4:00 PM, Central Standard Time, Monday through Friday. Or, send a fax to
Cummins Inc. using fax number 1-763-528-7229.
TM
WARNING
INCORRECT SERVICE OR PARTS REPLACEMENT CAN RESULT IN SEVERE PERSONAL INJURY,
DEATH, AND/OR EQUIPMENT DAMAGE. SERVICE PERSONNEL MUST BE TRAINED AND EXPERIENCED TO PERFORM ELECTRICAL AND/OR MECHANICAL SERVICE ON HIGH VOLTAGE EQUIPMENT.
Copyright 2017 Cummins Inc.
1-2
SYSTEM OVERVIEW
Figure 1-1 shows a block diagram using some of the
network modules described in this manual. The network and network modules are covered in detail in
the following sections.
The PowerCommand Control (PCC) communi-
cates through the Genset Communications Module
with other modules, such as a Digital I/O Module, or
Network Communications Module.
The Genset Communications Module (GCM) is
mounted in the PCC 3100 and is required for connecting the PCC to the network.
The Genset L
the PCC 3200 and is required for connecting the
PCC to the network.
ONWORKS Card (GLC) is mounted in
The Genset Network Communications Module
(NCM) is mounted in the PCC 2100 and is required
for connecting the PCC to the network.
The ATS Network Communications Module
(NCM) is mounted in the PowerCommand automatic transfer switch (OTPC, BTPC, OHPC, or CHPC)
and is required for connecting the transfer switch to
the network.
The Digital I/O Module (DIM) provides a group of
relay contact outputs and discrete inputs for interfacing the PowerCommand system to alarm or status outputs and to equipment that does not have
compatible communications capability.
PCC 2100 NETWORK
COMMUNICATIONS MODULE
(NCM)
DIGITAL I/O
MODULE (DIM)
NON-OTPC/BTPC
TRANSFER SWITCH
CONTROLS
COMMUNICATIONS
POWERCOMMAND
FT-10 NETWORK
JUNCTION
BOX
ANNUNCIATOR
MODULE
(CCM-T)
LONWORKS
SYSTEM
(LSA)
NON-PCC
GENERATOR SET
CONTROLS
COMMUNICATIONS
MODULE
(CCM-G)
JUNCTION
BOX
SLTA-10
T
CUSTOMER
= NETWORK TERMINATOR
T
RELAY
INPUTS
OUTPUTS
FIGURE 1-1. BLOCK DIAGRAM OF NETWORK MODULES
1-3
MODEM OR
LOCAL PC
Copyright 2017 Cummins Inc.
The LONWORKSR System Annunciator (LSA) al-
1
1
lows remote annunciation via the PowerCommand
Network of a genset or transfer switch etc. The annunciator shows an operator what is happening in
the network.
FT-10 NETWORK
CHANNEL
The SLTA-10 Gateway provides a network inter-
face to a PC or modem.
The Junction Box/Terminator provides connec-
tion points for network power and data wires.
The Controls Communications Module (CCM)
allows interfacing the network to a non−PCC generator set (CCM-G) or transfer switch (CCM-T).
The PowerCommand L
ONWORKSNetworkRouter
connects two communications channels (for example, FT-10 to FT-10) and routes messages between
them (see Figure 1-2).
The PowerCommand Etherlon Router connects
one FT-10 Network LonWorks channel to one
Ethernet channel (see Figure 1-3).
ROUTER
NETWORK
FT-10 NETWORK
CHANNEL
ROUTER
NETWORK
FIGURE 1-2. NETWORK ROUTERS
FT-10 NETWORK
CHANNEL
ROUTER
EITHERLON
FT-10 NETWORK
CHANNEL
TP-78 NETWORK
CHANNEL
EITHERNET
CHANNEL
FIGURE 1-3. ETHERLON ROUTER
Copyright 2017 Cummins Inc.
1-4
2. Network Hardware and Wiring
OVERVIEW
This section describes the free topology (FT) network communications protocol and the individual
R
modules used in the PowerCommand
FT-10 network. This section also describes network media,
network power supply, and physical connection requirements. For a definition of the terms used in a
PowerCommand network, refer to the Glossary in
Appendix A.
NETWORK CONFIGURATION
The PowerCommand network uses a free topology
(Figure 2-1). The network is made up of individual
devices that are connected by stranded twisted-pair
MODEM
communications cable for the transmission of network data. Network power is transmitted over wires
in the DC conduit.
The devices used in this network include a free topology transceiver (FTT-10). FTT-10 devices are
transformer isolated, have a 78 kbps bit rate, and
are polarity insensitive. External power must be
provided for FTT-10 devices (LSA, DIM, CCM-T,
CCM-G, GLC, NCM, and GCM).
A router can be configured as a repeater to extend a
segment into a channel. Repeaters transmit every
network variable signal they receive, no matter
where it originates.
POWERCOMMAND NETWORK
22 AWG MAXIMUM LENGTH
1640 FEET (500 M) PER SEGMENT
NOTE: Although 128 devices can be added to a
channel, only 64 devices are allowed per segment.
Add a repeater between segments to extend the
reach and allow for a higher device count.
CCM-G
CCM-G
CCM-G
T
= Network Terminator
GLC
CCM-T
SLTA-10
Channel 1
PCC 2100
NCM
T
NOTE: One device on each
segment must be terminated.
* Do not use the JBT terminator in FT-10 networks.
FIGURE2-1.FREETOPOLOGYNETWORKEXAMPLE
PowerCommand is a registered trademark of Cummins Inc.
Echelon, LonW
ORKS,AND Neuron are registered trademarks of Echelon Corporation.
JBT*
ETHERLON
ETHERNET
CCM-T
OTPC/BTPC/
OHPC/CHPC
ATS NCM
ETHERLON
DIM
LSA
GCM
SLTA-10
2-1
Copyright 2017 Cummins Inc.
A free topology architecture allows for wiring the
control devices without topology restrictions. It supports the use of star, loop, and/or bus wiring. Some
of the advantages of free topology include:
It allows for a method of wiring that best suits
the installation, thus reducing the need for advanced planning. It also allows for last minute
changes.
PowerCommand Network
(twisted pair)
Rewiring of existing installations is usually not
required.
The network can be expanded by tapping into
the existing wiring where it is most convenient
to do so.
Figure 2-2 shows a typical network with several
modules. Refer to Figure E-1 in Appendix D for a
more detailed network example.
Data
on pins
+
+
1 & 2
−−
TRANSFER
SWITCH
Non-PowerCommand Network
NOTE: JBTs can be used as twisted pair or
power connection points only. Do not use
the JBT terminator for FT-10 networks.
Customer’s PC
COM1
Connect one
Power Wiring
(RS−232C)
SLTA-10 Cable
Network Patch Cable
FT-10 SLTA-10
Gateway Module
Site Gateway
Control Wiring
PowerCommand
CCM-G
(Terminated)
Blue
Network Data and Power Connector:
6-pin Black connector
Blue − White/Blue
For Installation
and Service only
Blue − White/BlueBlue − White/Blue
RJ45
Jack
Technician’s
Laptop PC
Echelon PCC-10
PowerCommand
Control 2100
Connect to NCM Terminal Block
PCMCIA card
AC WIRING
PowerCommand
Controls Communications
Module - ATS
DC WIRING
RJ45
Jack
Echelon FT-10 Cable
Copyright 2017 Cummins Inc.
Data
on pins
1 & 2
+
+
−−
PowerCommand
LonWorks System Annunciator
Blue
B+
Ground
FIGURE2-2.TYPICALNETWORKCONFIGURATION
2-2
SYSTEM DESCRIPTION
The PowerCommand Network is a distributed control network. Echelon
vides the communications protocol via Echelon’s
Neuron
Chip and firmware. The network consists
of nodes (for example: PCCs with Genset Communications Modules, Digital I/O Modules, Controls
Communication Modules, and Network Gateway
Modules) wired together on a common network
data bus.
The control of the system does not reside in a central device, but rather is distributed at the system
component level. That is, each node has its own intelligenceintelligence needed at that location to
perform functions for that particular component.
The nodes communicate control and monitoring information to one another over the network data bus.
LonWorks technology pro-
The application is defined by naming the network
variable inputs and outputs for each device.
Nodes that do not have a local source of uninterrupted power are supplied by the network power
lines. These power lines must be in the DC power
conduit.
Neuron Chip
Each node contains a Neuron Chip. The primary
function of the Neuron Chip is to serve as a communications link between the system component located at that node and other system components on
the network. The Neuron Chip also provides the
node with some local processing power to read
switch positions, drive outputs, read analog data,
etc. The Neuron Chip communicates by directly
transmitting and receiving through a transformercoupled transceiver.
The nodes, their connections to one another, and
the modules/devices they control/monitor collectively form the distributed control system. A distributed control system is a more robust control
scheme than a conventional central control system.
Single points of failure in the distributed control system do not necessarily render the whole system inoperative.
Communications Protocol
A distributed control network operates on a peer-topeer communication protocol, whereby any device
on the communication channel can communicate
with any other device at any time.
Messages can be prioritized so that critical control
messages have first access to the network. Reliability of transmission is provided through use of acknowledged or repeated message service levels.
Accuracy of the message is checked by cyclical redundancy checking.
POWERCOMMAND CONTROLS
The PowerCommand Controls (PCCs) are a family
of microprocessor-based controls for Cummins Inc.
generator sets. They provide fuel control and engine speed governing, main alternator voltage output regulation, and complete generator set control
and monitoring.
The operating software provides control of the generator set and its performance characteristics, and
displays operating information on a digital and analog display panel.
The PCC communicates through the Genset Communications Module or Network Communications
Module with other modules, such as a L
System Annunciator or Network Gateway Module.
Variations of the PowerCommand Controls are covered in your generator set Installation, Operator’s,
and Service manuals.
ONWORKS
2-3
Copyright 2017 Cummins Inc.
SYSTEM MODULES
Genset Communications Module (GCM)
The Genset Communications Module (GCM) is
mounted inside the PCC 3100, and is required for
connection of the PCC 3100 to the network.
The GCM provides an interface for data between
the PCC 3100 and other modules on the network. It
communicates with the PCC 3100 base board
through the PCC’s serial port to determine the operating state of the control. For example, the GCM
monitors PCC 3100 data such as voltage, current,
engine speed, and oil temp; and then stores it for the
network.
The GCM also provides some direct local control
and monitoring of the PCC 3100. Outputs from the
GCM allow it to “wake up” the PCC 3100 when
needed, or to cause an emergency shutdown on
command. It monitors Not-In-Auto mode and battery voltage (when the PCC is asleep).
The GCM is installed piggyback on the analog
board within the PCC 3100. A description of the
GCM for PCC 3100 controls is covered in Section 7.
Genset LonWorks Card (GLC)
ules on the network. It communicates with the PCC
base board through the PCC’s serial port to determine the operating state of the control. For example, the NCM monitors PCC data such as voltage,
current, engine speed, and oil temp; and then
stores it for the network.
The NCM is installed piggyback on the base circuit
board within the PCC 2100. A description of the
NCM for PCC 2100 controls is covered in Section
The PowerCommand ATS Network Communications Module (NCM) is mounted inside the OTPC/
BTPC/OHPC/CHPC ATS, and is required for connection of the ATS to the network.
The NCM provides an interface for data from the
transfer switch to other modules on the network. It
communicates with the digital board providing complete monitoring and control of the transfer switch.
The NCM is installed piggyback on the digital module within the ATS. A description of the NCM for
PowerCommand Automatic Transfer Switches is
covered in Section 11.
The Genset LONWORKS Card (GLC) is mounted in-
side the PCC 3200, and is required for connection
of the PCC 3200 to the network.
The GLC provides an interface for data between the
PCC 3200 and other modules on the network. It
communicates with the PCC 3200 base board to
determine the operating state of the control. For example, the GLC monitors PCC data such as voltage, current, engine speed, and oil temp; and then
stores it for the network.
The GLC is installed in slot 4 in the control box card
cage assembly. A description of the GLC for PCC
3200 controls is covered in Section 9.
Genset Network Communications Module
(NCM) − PCC 2100 Control
The Genset Network Communications Module
(NCM) is mounted inside the PCC 2100, and is required for connection of the PCC to the network.
The NCM provides an interface for data between
the PowerCommand 2100 Control and other mod-
Digital I/O Module (DIM)
The base and expansion DIMs provide a group of
relay contact outputs and discrete inputs for interfacing the PowerCommand System to status outputs and to equipment that does not have compatible communications capability.
Each module (base and expansion) provide eight
0.5A, 250VAC/30VDC Form-C dry contact relay
outputs, which are driven by data from the network.
The contacts are connected to pluggable terminal
blocks for field wiring. Each relay can be programmed to operate from any SNVT switch variable
on the network. Each module also includes four digital inputs to couple user inputs to the network for
use elsewhere in control or monitoring.
Description and installation of the Digital I/O Module
is covered in Section 12.
SLTA-10 Gateway
The PowerCommand LONWORKS SLTA-10 Gateway provides a network interface to a PC either directly or through a modem. It translates network
Copyright 2017 Cummins Inc.
2-4
protocol into a protocol that can be understood by a
PC.
PCC generator sets, transfer switches, system or
breakers.
The SLTA-10 Gateway connects to network data
wire through a 2-position connector. The SLTA-10
Gateway receives its power from AC wall power,
and should be backed up by a standby uninterruptable power supply (UPS).
The SLTA-10 Gateway allows software running on a
PC to access, and control all modules on a network.
The PowerCommand Software uses this module to
access the network.
A description of the SLTA-10 Gateway is covered in
Section 13.
Junction Box/Terminator
A Junction Box/Terminator (JBT) provides connection points for network power and data wire. Junction Boxes may be used throughout a network for
connecting in Pass Thru, Local Loop and Stub configurations. Stub connections are used in a multidrop bus topology. The JBT is a potted assembly.
A junction box provides two 6-position pluggable
connector for data and power, two RJ45 jacks for
24AWG stub connections, a switch to connect the
data lines to a terminator circuit*, and a switch to select either a Pass Thru or a Local Loop connection
between the data lines on the two connectors.
These modules monitor discrete inputs, AC and DC
analog inputs, and communicate data to the PowerCommand Network.
The CCM has 16 channels of analog input and 32
digital inputs.
The module also includes eight Form-C output relays to provide control of the monitored equipment
from the network. For example, these outputs can
be used to initiate a test within a transfer switch, or
to remotely start a generator set.
A description of the CCM for genset applications is
covered in Section 16, and a description of transfer
switch applications is covered in Section 17.
Network Router
The Network Router (RTR) connects two communications channels by passing messages between
the two channels. The PowerCommand Network
Router is configured to connect two stranded twisted
pair/transformer isolated 78kb (FT-10) channels.
* The terminator circuit must only be used in a TP-78
network.
Description of the JBT is covered in Section 14.
LONWORKS System Annunciator (LSA)
The LONWORKSR System Annunciator (LSA) is connected to the network by stranded twisted pair communication wire.
The LSA has 20 LEDs to annunciate alarms. This
module has its own Operator’s Manual (900-0293).
The LSA is covered in Section 15 of this manual.
Controls Communications Module
for Generator Set and Transfer Switch
Monitoring
The Controls Communications Module (CCM) allows interfacing the network to conventional non-
The Router can be used within a PowerCommand
Network to extend the physical length of the network beyond 1640 feet (500 m) and/or increase the
maximum number of nodes to more than 64 nodes.
Refer to the Section 18 for application information
on the Network Router.
Etherlon Router
The PowerCommand Etherlon Router(s) connects
one FT-10 Network L
Ethernet channel.
One Etherlon Router must be used to go from an
FT-10 network to an Ethernet channel and another
must be used to go from the Ethernet channel back
to the FT-10 network.
Refer to the Section 19 for application information
on the Etherlon Router.
ONWORKSR channel to an
2-5
Copyright 2017 Cummins Inc.
ModLon II Gateway
The Modlon II Gateway will be obsoleted in October
2016 and replaced with the PowerCommand Lon
Gateway (A054V134). The PowerCommand Lon
Gateway is currently available for purchase and will
supersede any orders for the Modlon II Gateway after it has been obsoleted. Software and LonMaker
stencils for the PowerCommand Lon Gateway are
available on InCal for download.
The ModLon II Gateway provides a direct Echelon
LonWorks network interface to any device that can
communicate ModBus RTU or ModBus ASCII. This
module translates LonWorks network protocol into
ModLon ASCII or RTU.
A description of the ModLon II Gateway is included
in Section 20.
Copyright 2017 Cummins Inc.
2-6
DATA TRANSMISSION MEDIA
The modules communicate at 78 kbps over a communications channel of 22 AWG UL Level IV (or EIA
Category 5) stranded twisted pair communications
wire. The network data signal is coupled to the
stranded twisted pair wire by transformer-coupled
transceivers in each node. Nodes are isolated by
transformer from the data lines, which makes the
data wiring polarity insensitive. A high degree of
noise immunity is achieved with this medium.
Wiring and connection of data transmission media
is covered in the individual module sections.
NETWORK TOPOLOGY
There are two types of wiring topologies:
Free Topology (Preferred − see Table 2-1)
− Maximum Length Per Segment = 500 me-
ters (1640 feet)
TABLE 2-1. NETWORK DATA SPECIFICATION
− Maximum Number of Segments Per
Channel = 2
− Maximum Number of Devices per Segment = 64
− Termination − One termination is required
on an FT-10 network segment. Proper termination of the network is important for
reliable communications. All PGA nodes
have the terminator circuit built in except
the Gateway and Routers. Termination is
activated by a slide switch. Network terminator 300−5669 can also be used.
Multidrop Bus (Daisy Chain)
− Maximum Length = 2700 meters (8858
feet)
− Maximum Number of Devices = 44
− Termination − Two multidrop bus termina-
tors (not the terminators on the devices)
are required, one at each end of the network (Onan P/N 300−5729).
Data Communications Type:Transformer coupled, Differential Manchester encoding
Media:Stranded twisted pair communications wire
Bit Rate:78k bits/sec
Wiring Topology:Free Topology
Polarity:Polarity insensitive
Max Segment Length:1640 feet (500 meters)
Termination:One terminator required (recommended that the terminator be located
near the center of the segment)
Minimum Wire Type Required: Segment − Unshielded 22 AWG UL Level IV or EIA Cat. 5
Stranded Twisted Pair Communication Wire
Maximum Length of Exposed
Untwisted Wire at a Connector: 1/2 Inch (13 mm)
Maximum Number of Nodes:128 per channel, 64 per segment
Maximum no. of channels: 20
Wire Color Codes:Blue and White/Blue − primary wire pair for data
Orange and White/Orange − secondary wire pair for Local Loops with
2 pair cable
Connector: PGA nodes − 6 position pluggable black screw terminal block
The CCM-G, CCM-T, LSA, GLC, and the base DIM
have a black, 6-position pluggable screw terminal
block for connection to network data and network
power (see Figure 2-4). These devices also have
one RJ45 connector (see Figure 2-5).
The Junction Box/Terminator module has two
6-position pluggable terminal blocks (see Figure
2-4), as well as two RJ45 connectors.
The OTPC/BTPC/OHPC/CHPC ATS NCM uses a
network harness to connect from the module’s
2-position connector (see Figure 2-6) to two positions on the DIN rail customer connection terminals.
This device also has an RJ45 connector.
CONNECTOR
Copyright 2017 Cummins Inc.
6 5 4 3 2 1
TERMINAL BLOCK
FIGURE2-4.6-POSITIONPLUGGABLECONNECTOR
2-8
The PCC 2100 Genset NCM uses a network harness to connect from the module’s 2-position connector (see Figure 2-7) to another network device.
This device also has an RJ45 connector.
The SLTA-10 Gateway has a 2-position connector
RJ45 CONNECTOR
POSITION 2
POSITION 1
(see Figure 2-8) for network data connections and
network termination.
Connector positions and wire color codes are listed
in Tables 2-2 and 2-3.
FIGURE2-5.RJ45CONNECTOR
CONNECTOR
NETWORK
HARNESS
FIGURE2-6.OTPC/BTPC/OHPC/CHPCATS
NCM
TWO-POSITIONCONNECTOR(OLD
PRODUCTION)
NETWORK
HARNESS
FIGURE2-7.PCC2100AND
OTPC/BTPC/OHPC/CHPC
GENSET
NCMTWO-POSITIONCONNECTOR
CONNECTOR
(NEWPRODUCTION)
2-9
Copyright 2017 Cummins Inc.
LONWORKS
GATEWAY
NETWORK
STRANDED
TWISTED PAIR
NETWORK
CONNECTOR
FIGURE 2-8. NETWORK CONNECTION
CLIPPED
GROUND LEAD
NETWORK
TERMINATOR
TABLE 2-2. 6-POSITION PLUGGABLE TERMINAL BLOCK
PositionSignalWire Color CodeComments
1Net Data1white/blueif 2pr cable − white/orange for Local Loop
2Net Data2blueif 2pr cable − orange for Local Loop
3Net Power+
4Net Power+
5Net Power−
6Net Power−
TABLE 2-3. RJ45 CONNECTOR
PositionSignalWire Color CodeComments
1Net Data1white/blue24AWG only
2Net Data2blue24AWG only
3not used
4not used
5not used
6not used
7not used
8not used
Note: Position numbering goes from left to right when looking into the jack with the pins at the top and the
latching notch at the bottom.
Copyright 2017 Cummins Inc.
2-10
WIRING GUIDELINES
Communication over stranded unshielded twisted
pair (UTP) could be distorted by external sources of
electromagnetic interference (EMI), especially if the
conductors are physically degraded in any way. To
avoid or minimize this interference, observe the following guidelines.*
CAUTION
can cause communication signal distortion,
which can cause network failure and unintended equipment operation. Read and follow
these wiring guidelines.
Observe all local wiring codes. Refer to the NEC
(NFPA70) section on Wiring Methods and Materials
for general wiring methods and procedures.
Routing: Whenever possible, cabling should be
installed over corridor areas or along lines that are
parallel to the contours of buildings. All deviations
from straight runs should be made at right angles.
Keep wire away from sharp, abrasive, and hot surfaces.
Separation from sources of EMI: All cabling
should be installed in such a way as to comply with
the minimum separations from AC power sources,
as listed in Table 2-4.
In general, communications wiring should not be located in spaces that are shared with electrical panels, transformers, or other high voltage equipment.
Electromagnetic interference (EMI)
Tension: All cabling should be free from tension at
both ends, as well as over the length of each run.
Stranded Twisted pairs: All terminations should
be made in such a way as to minimize the extent to
which each stranded twisted pair is unraveled
at the point of its physical termination. Allow no
more than 0.5 inch (13 mm) of exposed untwisted
pairs.
UTP cable bends: UTP cable bends, or radii,
should be no less than eight times the cable diameter.
Harsh, hazardous, or corrosive environments:
Communications wiring should not be installed
where vapors, fumes, corrosives, dusts, or other industrial byproducts are present without taking appropriate precautions to protect the cables. Installers and cabling manufacturers of the materials involved must be consulted in all such cases.
Grounding and bonding: Although the use of UTP
does not involve the use of shielded cables in horizontal station runs, the use of shielding in high-paircount UTP riser cables as well as cables of all types
used in outdoor conditions is not uncommon. In
some cases, qualified installers or manufacturers
will make related recommendations in the interest
of human safety or mechanical protection of
installed cables (e.g., shielding against rodents).
When shielded cables are used, all applicable regulations for grounding and bonding as defined by local building codes for electrical materials must be
strictly adhered to.
TABLE 2-4. MINIMUM SEPARATION DISTANCES OF UTP FROM SOURCES OF EMI
Condition<2 kVA2−5 kVA>5 kVA
Unshielded power lines or electrical equipment in proximity
to open or nonmetal pathways
Unshielded power lines or electrical equipment in proximity
to a grounded metal pathway
Power lines enclosed in a grounded metal conduit (or equivalent shielding) in proximity to a grounded metal pathway
*These guidelines are derived from “The Do’s and Don’ts of UTP Cabling,” by Mark W. McElroy, in EC&M, June 1994.
2-11
5 in.
(127 mm)
2.5 in.
(64 mm)
12 in.
(305 mm)
6 in.
(152 mm)
3 in.
(76 mm)
Copyright 2017 Cummins Inc.
24 in.
(610 mm)
12 in.
(305 mm)
6 in.
(152 mm)
NETWORK POWER
This section describes the methods of supplying
power (referred to as network power) to those network modules that require an external power
source. Observe all local wiring codes and regulations when designing and installing network power
wiring.
The modules that require DC network power are:
Locate the CCM as close to the device being monitored as possible. Do not mount the CCM on a genset or vibration damage can result.
If current transformers will be monitored, the distance limitations between the current transformers
and the CCM will generally be more restrictive than
the network power distance limitations. Refer to the
appropriate CCM section for current transformer
distance charts.
Base Digital I/O Module (DIM)
L
ONWORKS System Annunciator (LSA)
Controls Communications Module − Genset
Applications (CCM-G)
Controls Communications Module − Automatic
Transfer Switch Applications (CCM-T)
OTPC/BTPC/OHPC/CHPC ATS Network
Communications Module (NCM)
The base DIM, LSA, and CCM-G modules can be
powered by a 24V genset battery. The 24V genset
battery can supply one or more of these modules
within specific distance limitations.
The genset batteries cannot deliver network power
over a long distance due to the voltage drop during
cranking. The genset batteries require a battery
charger that can supply the network load and maintain the batteries. Refer to the genset manual to determine B+ and GND connection points.
The CCM-G module can also be powered by a 12V
genset battery power supply. The distance is very
limited and no other types of modules can be powered off the same network power circuit. Refer to
Table 2-6 for distance and wire gauge requirements. (When powering CCM modules only from a
24V genset battery, refer to Table 2-7.)
The CCM-T network power will be supplied by a 12
VDC battery that is included along with a battery
charger in the CCM-T kit.
A 12V genset battery will not provide an adequate
power supply for DIMs and LSAs. In cases where
the genset is powered by a 12V battery, a separate
power supply must be used.
The OTPC/BTPC/OHPC/CHPC ATS NCM is powered by two 2V Lithium batteries.
SELECTING NETWORK POWER
CONFIGURATION AND WIRE SIZE
This section describes the procedures for selecting
the copper wire gauge needed to supply network
power. The wire gauge selected will be a function of
the type and number of modules used, the type of
power supply selected, and the distance between
the power source and the farthest module in the
power supply circuit. Do not use stranded twisted
pair data wire for DC power.
Use this procedure for developing network power
circuits for DIM, LSA, and CCM-G modules only.
(CCM-T modules are not included because they are
equipped with their own power supply.)
Refer to Figure 2-9 for illustrations of typical circuit
configurations and notes.
1. Determine the number and type of load modules (DIM, LSA, and CCM-G modules).
2. Calculate the Total Load Factor by adding up
the individual load factors for each DIM, LSA,
and CCM-G in each circuit.
Each CCM-G has a load factor of: 2.40
Each DIM has a load factor of: 0.10
Each LSA has a load factor of: 0.10
3. Determine the distance between the power
source and the farthest load device (DIM, LSA
or CCM-G module) in the circuit.
4. Look up the required minimum copper wire
gauge. Refer to Table 2-5 for 24V genset battery power supply.
Copyright 2017 Cummins Inc.
2-12
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