Fimer UNO-DM-COM KIT User manual

Solar inverter
UNO-DM-COM KIT
UNO-DM-PLUS Ethernet COM KIT
Quick installation guide

2
1. Principal Components
Principal components of the accessory board UNO-DM-COM KIT and UNO-DM-PLUS Ethernet
COM KIT are shown in the figures and described in the following table:
Components supplied with the kit
01 Inverter connector
02 RS485 Line Termination Jumper
03 DRM0 Activation Jumper
04 Alarm Connector
05 Fixing hole
06 RS485 and REM connector
07 Ethernet communication port (RJ45)
08 EMI ferrite
K1
J2
J3
1
J4
MP1
-T/R
RTN RTN
RS485REM
+T/R
+R
120 TERM.
ON
OFF
DRM0
N.C. N.O.
ALARM
C
UNO-DM-COM KIT
01
05
04 06
03
02
05
04 06 07
03
02
01
08

3
2. Supplied component list
Inside the package, the following items are
supplied
Components supplied with the kit Q.ty
Accessory Board
UNO-DM-COM KIT
or
UNO-DM-PLUS
Ethernet COM KIT
1
Quick installation
guide 1
Tower with spring 1
EMI ferrite (08) 2
Cable gland M25 1
Gasket with two/
three* holes for the
service cable gland
M25 + cap TGM613
1+1 or 2
*Gasket with three holes and two pieces of
cap TGM613 only on UNO-DM-PLUS Ethernet
COM KIT
3. Functional diagram
UNO-DM-COM KIT and UNO-DM-PLUS
Ethernet COM KIT are the optional accessory
boards that can be integrated in the inverters
of the UNO-DM-PLUS family offering the
following additional functions:
- Ethernet communication port (RJ45) (Only
available on UNO-DM-PLUS Ethernet COM
KIT board)
- RS485 communication port for connecting
either an external monitoring / control system
or a supported meter for implementing a
Dynamic feed-in control.
- Remote ON/OFF Digital Input.
- Alarm Contact.
- Demand Response Mode 0 required by AS/
NZS 4777.2:2015
The expansion board can be inserted directly
into the dedicated connector inside the inverter
and can also be easily added to a previously
installed inverter.
The installation must be performed by an
installer or by a trained technician after reading
the instructions given in this guide.
The board is directly powered by the inverter
and provides the required safety isolation from
the primary side of the inverter.
(Only available on UNO-DM-PLUS Ethernet
COM KIT board)
The Ethernet connectivity is based on Zero-
Conf IP protocol with DHCP client.
Ethernet port provides access to the
integrat-ed Web User Interface as well as
already pos-sible with the WiFi communication
channel simultaneously.
Both RS-485 and Ethernet communication
ports can be set for enabling communication
over either Modbus (RTU and TCP respec-
tively) protocol Sunspec complaint or proprie-
tary communication protocol named Aurora
Protocol.
Only one client at a time is allowed commis-
sioning the inverter or reading and/or writing
the inverter’s registers.
Available supported Sunspec modes and reg-
ister map are published.
4. Assembly instructions
WARNING –BHazardous voltages may
be present on accessory board. To avoid
the risks for electric shock, the access
to the internal zones of the inverter must
be carried out after at least 5 minutes
following the disconnection of the
equipment from the network and from the
photovoltaic generator.
To install the accesory board, perform the
following steps:

4
- Remove the front cover of the UNO-DM-
PLUS inverter (Refer to the quick installation
guide of UNO-DM-PLUS inverter for proper
removal of the front cover)
-(A): Connect the connector (01) to the
counterpart present on the inverter
-(B): Use the tower with the spring supplied to
secure the board to the chassis of the inverter
using the appropriate hole (05)
WARNING –BBefore turning on the unit,
it is mandatory to close the cover of the
inverter.
OR
5. Instructions for connection
READ THE MANUAL –EFor more information
about the configuration and use of the terminal
for communication and control signals, refer to
the inverter product manual.
5.1 Cable connection in inverter
versions without wiring box
Each cable connected to the connectors of the
accessory board must be passed through the
M25 cable gland (supplied) to be installed on
the bottom part of the inverter.
The M25 cable gland (that accepts a cable with
a diameter ranging between 10 mm and 17
mm) and a gasket with two holes to be inserted
inside the cable gland, which allows the
passage of two (in case of UNO-DM-COM KIT)
or three (in case of UNO-DM-PLUS Ethernet
COM KIT) separate cables with a maximum
diameter of 6 mm.
To install the M25 cable gland remove the M25
protection cap from the inverter and replace
it with the cable gland, fastening it with the
same M25 lock nut and the same O-ring of the
protection cap.
ATTENTION –ACaution! To ensure the
degree of environmental protection IP65,
it is necessary to fix the cable gland to the
inverter chassis with a minimum torque of
7.5 Nm. When installing the cable gland
M25 use the O-ring removed from the M25
protection cap (installed into the inverter)
to mantain the IP65 protection level!
If only a single cable is being passed through
the gasket, the TGM613 cap must be inserted
into the spare hole to ensure degree of
environmental protection (see figure below).
ATTENTION –AThe communication
cable (ethernet and/or RS485) must
be wrapped around the EMI ferrite (08)
supplied in the package (1 winding); such a
EMI ferrite should be appropriately placed
on the inside bottom side of the inverter
compartment (see side illustration and
ethernet/RS485 connection paragraph in
this guide).
ATTENTION –AThe connection of the
communication and control signal cables
should be done with no over-length of
the above mentioned cables (as in the
illustration). i.e. the cables should be
run over the internal protective sheet.
Moreover the communication and control
signal connection cables should not be in
contact witn AC cables.
A
B
A
B
UNO-DM-PLUS Ethernet COM KIT
installed inside the inverter,
DRM0 supported

5
5.2 Cable connection in inverter
versions with wiring box
To connect the signal cables to the accessory
board is necessary to:
- Remove both front covers (wiring box (05) and
inverter compartment (04))
- Insert the appropriate water-tight conduit
connector on signal conduit opening (15) and
tighten to the chassis to maintain NEMA 4X
compliance.
Conduit must be sealed using water-tight
fittings to maintain NEMA Type 4X enclosure
integrity.
1 2 3
- Run the cables through the signal cable
conduit
- Run the cables through the plastic cable tray
on the internal right side of the wiring box
- Run the cables inside the inverter through the
hole and connect the cable to the accessory
board.
1 2 3
08
ATTENTION –AThe communication
cable (ethernet and/or RS485) must
be wrapped around the EMI ferrite (08)
supplied in the package (1 winding); such a
EMI ferrite should be appropriately placed
on the inside bottom side of the inverter
compartment (see side illustration and
ethernet/RS485 connection paragraph in
this guide).
ATTENTION –AThe connection of the
communication and control signal cables
should be done with no over-length of
the above mentioned cables (as in the
illustration). i.e. the cables should be
run over the internal protective sheet.
Moreover the communication and control
signal connection cables should not be in
contact witn AC cables.

6
To connect the wires to the Alarm (04), RS485
and REM (06) connector terminals:
1) With a flathead screwdriver, hold the button
corresponding to the contact to be wired.
2) Insert the cable.
3) Release the button and check the cable seal.
6. Ethernet connection
and cable specification
If it’s required to use a pre-assembled ethernet
cable to be connected to the UNO-DM-PLUS
Ethernet COM KIT, it will be necessary to make
the following operation:
A) Remove the gasket with three holes from the
M25 cable gland disassembling the thread-lock
sealing nut.
B) Cut the gasket from the edge to an hole with
a cutter or a scissor as shown in the pictures.
C) Insert the Ethernet cable in the hole
previously cutted of the gasket with three holes
and assebly the gasket with three holes on the
M25 cable gland.
D) Firmly screw the thread-lock sealing nut.
A B C D
The characteristics required for the ethernet
cable are listed in the table below:
Type Cable diameter
CAT 5E or greather 6 mm max.
The ethernet cable must also be wrapped
around the EMI ferrite supplied in the package
(1 winding); such a EMI ferrite should be
appropriately placed on the inside bottom side
of the inverter compartment.
1 2 3
7. RS485 line connection
Characteristics and dimensioning of the
communication cables
To connect the RS485 line, you must use a
shielded cable with three conductors. The
characteristics that the cable must possess are
indicated in the following table:
Type Shielded
AWG (mm²) 24 - 16 (0.2 - 1.5)
Characteristic
impedance 120 Ohm
Operational voltage ≥300 V
Operational
temperature -20...+60 °C
The wiring of the RS485 line must also be
wrapped around the EMI ferrite supplied in the
package (1 winding); such a EMI ferrite should
be appropriately placed on the inside bottom
side of the inverter compartment.
1 2 3

7
8. Connecting the alarm
contact and the remote
control
Characteristics and dimensioning of the
cable for alarm and remote control contact:
The characteristics that the cable must
possess are indicated in the following table:
AWG / mm² Operational
voltage
Operational
temperature
24 - 16
0.2 - 1.5 ≥300 V -20...+60 °C
Using the Alarm terminal
Connections to the configurable ALARM relay
are through the terminals (04). This allows
connection to external devices to signal fault
conditions or load control. The operation
mode can be selected in the "INVERTER>
SETTINGS> Alarm" menu.
K1
J2
J3
1
J4
MP1
-T/R
RTN RTN
RS485REM
+T/R
+R
120 TERM.
ON
OFF
DRM0
N.C. N.O.
ALARM
C
UNO-DM-COM KIT
04
The operation modes that can be selected:
Production, Alarm, Alarm Configurable,
Crepuscolar, Alarm Configurable Latch, Alarm
Configurable ext, GoGo relè (Auto), GoGo
relè (Remote). Refer to the product manual for
further details on the operation modes of the
Alarm terminal.
ATTENTION –AThe ALARM contact
can only be used with systems that
include additional safety insulation
(supplementary insulation in relation to
the DC input voltage).
Using the REM terminal
The REM terminal (06), when properly
configured, allows the use of the “Remote ON /
OFF” or the “DRM0” functions.
The inverter can be disconnected from the grid
remotely using the REMOTE ON/OFF function.
This function is enabled in the “INVERTER
> SETTINGS > Remote ON/OFF” menu. To
use purely as a REMOTE ON/OFF, the DRM0
jumper (03) must be set to "OFF".
K1
J2
J3
1
J4
MP1
-T/R
RTN RTN
RS485REM
+T/R
+R
120
TERM.
ON
OFF
DRM0
N.C. N.O.
ALARM
C
UNO-DM-COM KIT
06
Where required, it is possible to activate the
DRM0 function by configuring the Jumper for
the activation of the DRM0 function (03) in the
“ON” position.
DRM0
ON
OFF
03
ATTENTION –AIn case the DRM0
function is enabled if the proper connection
of the REM terminal is not made, the
inverter will remain disconnected.
Refer to the product manual for further
information on the DRM0 function.

FIMER_UNO-DM-COM KIT & UNO-DM-PLUS Ethernet COM KIT_Quick Installation Guide_EN_RevC
8
For more
information, contact
your local FIMER
representative or
visit:
fimer.com
The company reserves the right to
make technical changes or to modify
the content of this document without
prior notice. With reference to purchase
orders, the agreed clauses prevail.
FIMER assumes no responsibility
whatsoever for potential errors or
information gaps in this document.
All rights in this document, in the content
and illustrations shown are reserved.
Any reproduction, transmission to third
parties or use of the contents, partial or
complete, without the written consent of
FIMER is prohibited.
Copyright© 2021 FIMER.
All rights reserved.
26-04-2021
9. Features and Technical Data
Connections
Type of connectors
Connectors with spring
(Cables accepted: 0.2-1.5 mm² / 24-16 AWG)
Ethernet 10/100Mbits base –T (only on UNO-DM-
PLUS Ethernet COM KIT)
Alarm relay rating Floating contact (230V, 1A max.)
Remote On/Off Digital input
Serial communication protocol ModBus RTU Sunspec compliant or Aurora
Protocol
Safety
Brands CE
Class of insulation I
EMC and safety standards EN 60950-1; EN 55022 ; EN 55024
READ THE MANUAL –EIn case of inverter fault, remove and keep any accessory boards installed
inside the inverter before shipping it to FIMER. Any accessory board will not be reinstalled in case of
inverter replacement.