Johnson Controls EMCOMMS Series User manual

EMCOMMS Series Meter
Installation Instructions
APPLICATIONS
The EMCOMMS Series Meter is a three channel meter, capable
of monitoring single-phase, poly-phase and three-phase
systems, or up to three independent single-phase loads with
mixed amperage and voltage ratings. The meter supports
BACnet MS/TP, Modbus RTU and Modbus ASCII protocols. The
meter also features 2 pulse inputs to maintain exibility during
installation and operation. With the EMCOMMS intelligent
meter technology, the device self-congures baud rate,
serial format, protocol, and address - eliminating additional
conguration steps.
The EMCOMMS meter is compatible with all sizes of ROG Series
Current/Voltage Transducers (CVTs). Each CVT is independently
calibrated to measure and digitally communicate power values
to the meter. The system voltage connections are made directly
into each CVT - keeping all high voltage in the panel and away
from the meter. Additionally, each CVT will auto-congure to the
meter as they are plugged in, removing manual conguration
from the installation.
LIT-12013042
Issued June 2018
WARNING: Risk of Electric Shock
This equipment must only be installed and serviced by qualied electrical
personnel having the skills and knowledge related to the construction and
operation of this electrical equipment and installation, and has received safety
training to recognize and avoid the hazards involved. NEC Article 100. Current/
Voltage Transducers must be mounted inside a suitable re and electrical
enclosure. Do not use this product for life or safety applications. Do not install
in hazardous or classied locations. Use a properly rated voltage sensing
device to conrm that power is o. DO NOT depend on this product for voltage
indication. Contact with components carrying hazardous voltage can cause
electric shock and may result in severe personal injury or death. Do not operate
this device at voltages exceeding specied working voltage to prevent device
failure, which can result in personal injury or property damage.
WARNING: Risk of Personal Injury
!
Read, understand and follow the instructions before installing this product.
All NFPA 70E requirements for safe work practices and for Personal Protective
Equipment (USA) and other applicable local codes must be followed when
installing this product. Only qualied trade installers and electrical personnel
having the skills and knowledge related to the construction and operation of
this electrical equipment and installation, and has received safety training to
recognize and avoid the hazards involved (NEC Article 100) should install this
product.
PRODUCT LIMITATION:
The EMCOMMS Series Meter and ROG Series Current/Voltage Transducers
are designed to be used as a system. DO NOT connect anything other than a
Johnson Controls ROG Series CVT to the RJ-11 jacks on the EMCOMMS meter.
INSTALLATION ENVIRONMENT:
The EMCOMMS Series Meter is intended for environments which control
conductive pollution and the possibility of condensation or high humidity
(Pollution level 2). High voltage components shall be mounted in an appropriate
electrical enclosure. The EMCOMMS meter is a class 2 device.
ROG Series Current/Voltage Transducers (CVTs) may not be installed in a panel
where they exceed 75% of the wiring space of any cross-sectional area within
the panel. Meter shall be enclosed in a certied enclosure.
NOMENCLATURE
EMCOMMS
2 1
Power
Ground
Pulse Input 1
Pulse Input Ground
Pulse Input 2
RS-485 +
Isolated Ground/Shield
RS-485 -
Setup Buon
Line Status
LED
Device
Status LED
CVT Status LEDs
CVT Connecons
RS485
Status LED
Serial Number



Figure 1: EMCOMMS Series Meter
Data Cable (to meter)
Neutral (white)
Voltage (color)
Clasp Release
Rogowski
CVT Label
ROG-15S-03-BLK
0 to 1500 A
90 to 600 V
Model #
Amperage/Voltage
Orientation
Coil
Label
Rating
Color Indicator
Figure 2: ROG Series Current/Voltage Transducer (CVT)
EMCOMMS Series Meter - Installation Instructions 1
157-0161-0A
Released: June 15, 2018

INSTALLATION
MOUNTING
The EMCOMMS meter features four mounting options for
convenience: rare earth magnets, mounting tabs, horizontal
DIN rail and vertical DIN rail.
Figure 3: EMCOMMS Meter Mounting Options
WIRING
2 1
Power
Ground
Pulse Input 1
Pulse Input Ground
Pulse Input 2
RS-485 +
Isolated Ground/Shield
RS-485 -
Setup Buon
Line Status
LED
Device
Status LED
CVT Status LEDs
CVT Connecons
RS485
Status LED
Serial Number



12-30VDC/24VAC
1
EMCOMMS
Terminaon
on
o
1
One side of transformer secondary is connected to signal common.
Dedicated transformer is recommended.
Figure 4: EMCOMMS Meter Wiring
NETWORK SUPPORT
The EMCOMMS meter supports use on both BACnet and
Modbus networks. The default settings on the meter includes
auto-detection of protocol type, device address, serial format
and baud rate. Each meter ships with a default Modbus address.
This process is further detailed in Network Connectivity (page 3).
RS485 WIRING BEST PRACTICES
Use of appropriate shielded twisted pair wire (14-26 AWG) is
recommended, per protocol specications. Total wiring runs
should not exceed 4000 feet, with a maximum of 128 devices
(BACnet) or 32 devices (Modbus) in a single daisy chain.
DAISY CHAIN WIRING EXAMPLE
S
EOL 120Ω Resistor
511Ω Pullup bias resistor
511Ω Pulldown bias resistor
120Ω Bus termina�on resistor
Figure 5: Daisy Chain Wiring
Slide On Slide On
DIN Rail (horizontal)DIN Rail (vertical)
Snap-in mounting tabsMagnetic mount--no drilling!
BIASING AND TERMINATION
Use the jumpers to select the 120 ohm EOL resistor if EMCOMMS
meter is the last device in your network. If the meter is being
installed within a network of other existing RS485 devices, it
may be necessary to use the 511 ohm biasing resistors based on
your network or hardware requirments. See Figure 4. EMCOMMS
Meter Wiring for locations of jumpers and values.
PULSE INPUT WIRING
The EMCOMMS meter is capable of accepting dry pulse
(outputs) from other devices and meters (water, gas, steam,
etc). It will count the pulses and report them in BACnet Objects
and/or Modbus registers. These discrete registers reported as
Pulse 1 and Pulse 2 can then be ‘mapped’ in your controller or
software to the engineering unit being monitored i.e. GPM,
BTU, CFM, etc.
When connecting 3rd party outputs to the EMCOMMS meter,
it is important to ensure the pulse rating of the outputs do not
exceed rating of the meter in Specications (page 5).
2 1

Device local ground
Secondary Device
Pulse Output
Figure 6: Pulse Input Wiring
CVT CONNECTION
The EMCOMMS meter is compatible with all Johnson Controls
ROG Series Current/Voltage Transducers (CVTs). Each CVT will
self-congure to the meter. The meter can accomodate the
connection of up to 3 CVTs. The CVTs can be from a single-phase,
poly-phase or three-phase system; or up to three independent
single-phase loads with mixed amperage and voltage ratings.
TSR
L1 L2 L3 N
White
Color
Data cable
2 112
Line Statu s
LED
Device
Status LED
CVT Stat us LEDs
L1
AL2
BL3 C
R S T
LOAD
TYPICAL 3Ø WIRING 90 to 600VAC
Figure 7: EMCOMMS Meter and CVT Connections
EMCOMMS Series Meter - Installation Instructions 2

NETWORK CONNECTIVITY
The EMCOMMS meter is compatible with both BACnet and Modbus networks. The meter is designed to automatically identify
the network baud rate, protocol type, serial formats and self-address for quick startup. Follow the BACnet Network Connectivity or
Modbus Network Connectivity section for the steps required to connect the meter to an existing network.
To manually setup network parameters of the EMCOMMS meter, remove meter from the active network and utilize the EMCOMMS
Series Conguration Tool.
MODBUS NETWORK CONNECTIVITY
Once the EMCOMMS meter has been connected to the RS-485
network, it will automatically detect Modbus trac and begin
auto-conguration. The meter will detect and match baud rate,
parity and stop bits. Connect the meter to a Modbus network
through the following steps:
1. Wire the EMCOMMS meter to an existing Modbus network
utilizing the wiring diagrams in Figure 4. EMCOMMS Meter
Wiring.
2. Apply power to the meter.
3. Meter will analyze the network trac for the following
parameters: baud rate, serial format and protocol. During this
conguration, the RS485 LED yshould display approximately
15-30 seconds of blinking activity in yellow  while the meter
congures itself to the network.
2 1
Setup Bu�on
Line Status
LED
Device
Status LED
CVT Status LEDs
RS485
Status LED

EMCOMMS
Figure 10: RS485 LED Activity
4. The RS485 LED ywill appear green  after the meter has
sucessfully connected to the network. If the RS485 LED does
not appear green, see Diagnostic Mode (Page 4).
5. The EMCOMMS meter ships with a default Modubs slave
address. To identify this address, add“100”to the last two digits
of the unique serial number printed on the label:
SN 123456
56
+100
156
3456
Figure 11: EMCOMMMS Meter Serial Number
The example meter in Figure 11: EMCOMMS Meter Serial Number
would have a default Modbus slave address of 156.
To customize the Modbus slave address (along with other
network parameters) reference the EMCOMMS Series Modbus
Protocol Guide document or utilize the EMCOMMS Series
Conguration Tool.
Tip: Customizing the Modbus slave address? Mark the new
address on the EMCOMMS meter label with a permanent
marker for a quick reference point:
12 to 30 VDC
1.5 W Typ
24 VAC
Class 2
130 mA Max
Isolated
1500 V
rms
Read instructions
before installing
60 °C Max
on
o
P
WER
PRINT
with
technology address
Pulse Inputs
Johnson Controls
ROG sensors only
EMCOMMS
120 511511
Ì240042f
240042
Roland Versaworks Variable Data Printing:
Serial Courier New, 6 pt, Left aligned
BarCode Code 128, 22 pt, Left aligned
Serial2 Courier New, 6 pt Bold, Center aligned
BarCode2 Code 128, 22 pt, Center aligned
Date Myriad Pro Light, 6 pt, Left aligned
R
L1 L2 L3 A B C
S T
Device
Status
Line
Status
Setup
RS485
Status
Termination
MATERIAL: ORACAL 651 SILVER GREY
INK: ROLAND ESL3
ALTERNATES REQUIRE UL APPROVAL
B
C
A
D
4 1235
4 1235
B
C
A
D
Adobe Illustrator CC 2015 1 of 1
A
UPDATED
PAGE SIZE
REVPART NUMBER
9290 SW Nimbus Ave.
Beaverton, OR 97008
1-800-660-8864
Thursday, June 23, 2016
0A141-0272
LABEL, EM, RS485
DESCRIPTIONBYDATEREV
Initial Release
DLE0A TBD
Figure 12: EMCOMMS Meter Address Label
BACNET NETWORK CONNECTIVITY
Once the EMCOMMS meter has been connected to the RS-485
network, it will automatically detect BACnet trac and and
begin auto-conguration. The meter will detect and match
baud rate and identify an unused MAC address to occupy.
Connect the meter to a BACnet network through the following
steps:
1. Wire the EMCOMMS meter to an existing BACnet network
utilizing the wiring diagrams in Figure 4. EMCOMMS Meter Wiring.
2. Apply power to the meter.
3. Meter will analyze the network trac for the following
parameters: baud rate, serial format, protocol and available
MAC address. During this conguration, the RS485 LED y
should display approximately 15-30 seconds of blinking activity
in yellow  while the meter congures itself to the network.
2 1
Setup Bu�on
Line Status
LED
Device
Status LED
CVT Status LEDs
RS485
Status LED

EMCOMMS
Figure 8: RS485 LED Activity
4. The RS485 LED ywill appear green  after the meter has
successfully connected to the network. If the RS485 LED does
not appear green, see Diagnostic Mode (Page 4).
To customize the BACnet address and device ID (along with
other network parameters) reference the EMCOMMS Series
BACnet Protocol Guide document or utilize the EMCOMMS Series
Conguration Tool.
Tip: Customizing the MAC address? Mark the new address
on the EMCOMMS meter label with a permanent marker for a
quick reference point:
12 to 30 VDC
1.5 W Typ
24 VAC
Class 2
130 mA Max
Isolated
1500 V
rms
Read instructions
before installing
60 °C Max
on
o
P
WER
PRINT
with
technology address
Pulse Inputs
Johnson Controls
ROG sensors only
EMCOMMS
120 511511
Ì240042f
240042
Roland Versaworks Variable Data Printing:
Serial Courier New, 6 pt, Left aligned
BarCode Code 128, 22 pt, Left aligned
Serial2 Courier New, 6 pt Bold, Center aligned
BarCode2 Code 128, 22 pt, Center aligned
Date Myriad Pro Light, 6 pt, Left aligned
R
L1 L2 L3 A B C
S T
Device
Status
Line
Status
Setup
RS485
Status
Termination
MATERIAL: ORACAL 651 SILVER GREY
INK: ROLAND ESL3
ALTERNATES REQUIRE UL APPROVAL
B
C
A
D
4 1235
4 1235
B
C
A
D
Adobe Illustrator CC 2015 1 of 1
A
UPDATED
PAGE SIZE
REVPART NUMBER
9290 SW Nimbus Ave.
Beaverton, OR 97008
1-800-660-8864
Thursday, June 23, 2016
0A141-0272
LABEL, EM, RS485
DESCRIPTIONBYDATEREV
Initial Release
DLE0A TBD
Figure 9: EMCOMMS Meter Address Label
EMCOMMS Series Meter - Installation Instructions 3

NORMAL OPERATION
When powered, the EMCOMMS meter will start up in Normal
Operation. In Normal Operation, there are 4 sets of LEDs that
provide status indications:
CVT Status LEDs
Line Status LED
Device Status LED
yRS485 Status LED
Figure 13: EMCOMMS Status Indication LED Diagram
The color of each LED will indicate conditions of the system:
 Green = Normal
 Yellow = Warning: See Diagnostic Mode
 Red = Error: See Diagnostic Mode
If LEDs yare green  (blinking or solid), then there are
no conditions that require diagnostics.
If any of LEDs yare yellow  or red  (blinking or solid)
proceed to Diagnostic Mode below.
If one or more of your LEDs is blinking:
-CVT Status LEDs will blink when no load is present
-Device Status LED will blink when a non-factory default
setting has been selected
-RS485 Status LED ywill blink to indicate network trac
DIAGNOSTIC MODE
Diagnostic Mode identies and displays potential issues causing
one or more of the LEDs yto appear yellow  or red 
during Normal Operation. Diagnostic Mode is not available if all
LEDs ydisplay green  .
CVT Status LEDs
Line Status LED
Device Status LED
Setup Button
yRS485 Status LED
Figure 14: EMCOMMS Diagnostics LED Diagram
Use Figure 15: Diagnostic Mode Navigation Flowchart shown
below along with Table 1. Diagnostic Codes to determine
underlying conditions.
Figure 15: Diagnostic Mode Navigation Flowchart
The EMCOMMS Series Meter will return to Normal Operation
after 60 seconds of inactivity, or by manually exiting Diagnostic
Mode using Figure 15: Diagnostic Mode Navigation Flowchart.
P
Code
2s
DIAGNOSTIC MODE
(if present)
Code
Last Code
(if present)
Press Setup Button 
All LEDs may display
diagnostic codes. Match the LED
location, color and blink pattern to a
condition in Table 1. Diagnostic Codes.
To view if any additional codes are
present, press Setup Button to
advance.
Normal Operation:
If any LEDs display yellow
or reda diagnostic code is present
P
2s
P
P
P
P
NORMAL OPERATION
Enter Diagnostic Mode:
Exit Diagnostic Mode:
Hold Setup Button for 2 seconds
2 1
Setup Bu�on
Line Status
LED
Device
Status LED
RS485
Status LED


EMCOMMS
CVT Status LEDs

R S T
2 1
Setup Bu�on
Line Status
LED
Device
Status LED
CVT Status LEDs
RS485
Status LED



R S T

EMCOMMS
DIAGNOSTIC CODES
Diagnostic codes are presented one at at time, using LED
location, color, and sequence to indicate an installation concern.
A diagnostic code will repeat every 3 seconds until the user
proceeds to the next diagnostic code or the meter returns to
Normal Operation.
Table 1. Diagnostic Codes
 CVT LEDs Indication Corrective Action
Negative power Verify CVT orientation toward
load
Phase Loss Check phase voltage and
current
Low power factor
(<0.5)
If not low PF, ensure voltage
legs match with CVTs
Frequency out of
range
Frequency is below 38Hz or
above 150Hz
Over voltage Ensure system voltage does
not exceed 600VAC
Over current Replace with a larger
amperage rated CVT
 Line LED Indication Corrective Action
Mismatched voltag-
es on power sensors
Ensure desired voltages are
being monitored
Not a three phase
system
Verify system type
Reversed Phase
Order
Swap any two CVT meter
inputs if not intentional
 Device LED Indication Corrective Action
Low supply voltage Ensure voltage to meter is
12-30VDC/24VAC
Temperature
warning
Relocate meter to suitable
environment
y RS485 LED Indication Corrective Action
Noise Warning Check line terminations, baud
rate settings
Lost Next Master Allow device to continue
network analysis. Conrm
other devices on network
are communicating properly
(BACnet Only)
No RS485 Trac Ensure device is on active
network
Dropped I-HAVE
reply
Allow more time between
WHO-HAS queries (BACnet
Only)
Detecting Baud Rate Wait for enough network trac
to auto-detect or manually set
using Edit Settings
Detecting Protocol Wait for enough network trac
to auto-detect or manually set
using Edit Settings
Detecting Address Ensure network has free MS/TP
master addresses
Address Collision One or more devices have
duplicated addresses
Parity Error Check connection settings
(protocol, baud rate, serial
format, address)
Framing Error Check serial formats and baud
rate
Frame Too Large Program controller for smaller
frames
or indicates a fast blink (200 ms)
or indicates a slow blink (1 sec)
Figure 16: Diagnostic Codes Table Key
EMCOMMS Series Meter - Installation Instructions 4

FACTORY DEFAULT RESET
Follow the steps below to reset the EMCOMMS meter to factory default settings. Caution: Restoring factory default settings will reset
all manual congurations, including customized address.
To Restore Factory Default Settings
1. Hold setup button down until all LEDs blink red (approximately 30 seconds) and release.
2. Momentarily press the setup button again within 5 seconds of the rst release.
3. The LEDs will stop blinking and remain solid red for about 1 second.
4. Meter is now reset to factory default settings.
SPECIFICATIONS
(1) One side of transformer secondary is connected to signal common. Dedicated transformer is recommended.
(2) CVT Accuracy based on reading, not full scale.
Power Supply Input 12-30VDC/24VAC(1), 1.5W max,100mA max.
Output
RS-485 2-wire, BACnet MS/TP, Modbus RTU, Modbus ASCII
Baud Rates 9600, 19200, 38400, 57600, 76800, 115200
RS-485 Loading 1/4 unit
Wiring Requirements Conductor gauge 14-26 AWG
Terminal torque rating 0.4 ft-lb (0.55 N-m)
Pulse Inputs
Input Rating 3.5 +/- 0.5 VDC, short circuit current is 10mA max
Pulse Rate 50 Hz (default), congurable up to 500 Hz
Pulse Active <100 ohms
Pulse Undened 100-1000 ohms
Pulse Idle >1000 ohms
Service Types
Congurations 1Ph, 2Ph, 3Ph Wye (4-Wire), 3Ph Delta (3-Wire)
Voltages 90VL-N through 600VL-L
Frequency 45-65 Hz
System Performance Accuracy 1% for V, A, kW, kVAR, kVA
Current/Voltage Transducer
Accuracy (2)
300A Rating
800A Rating
1500A Rating
2400A Rating
6000A Rating
+/-1% 30-300A (+/-3% >10A)
+/-1% 30-800A (+/-3% >10A)
+/-1% 30-1500A (+/-3% >10A)
+/-1% 50-2400A (+/-3% >15A)
+/-1% 120-6000A (+/-3% >40A)
Operating Environment Temperature -4 to 140F (-20 to 60C)
Humidity 0-95% non-condensing
EMCOMMS Enclosure Material Polycarbonate/ABS
Dimensions 4.1”h x 1.8”w x 0.9”d
CVT Enclosure
Material Polycarbonate/ABS
Enclosure Dimensions 3.5”h x 1.6”w x 0.8”d
Small Rope Circumference
Medium Rope Circumference
Large Rope Circumference
Grande Rope Circumference
9”
15”
24”
36”
Compliance U.S.A. UL Listed, File E501430
Canada UL Listed, File E501430
EMCOMMS Series Meter - Installation Instructions 5
Building Eciency
507 E Michigan Street, Milwaukee, WI 53202
Johnson Controls® is a registered trademark of Johnson Controls.
All other marks herein are the marks of their respective owners. © 2018 Johnson Controls.
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www.johnsoncontrols.comPublished in U.S.A.