ABB NETA-21 Installationshandbuch
—
REMOTE MONITORING OPTIONS FOR ABB DRIVES, CONVERTERS AND INVERTERS
NETA-21 remote monitoring tool
Installation and start-up guide
NETA-21 remote monitoring tool 3
NETA-21 remote monitoring tool
About this guide
This guide contains the very basic information about the mechanical and electrical
installation and start-up of the NETA-21 remote monitoring tool.
Safety instructions
If you need to connect the remote monitoring tool to a control board inside the
drive/converter/inverter, follow the Safety instructions below.
WARNING! Ignoring the following instructions can cause physical injury or
death, or damage to the equipment.
• Only qualified electricians are allowed to install and maintain the drive, converter
and/or inverter!
• Disconnect the drive, converter or inverter to which the option module will be
installed or connected from all possible power sources. After disconnecting,
always wait for 5 minutes to let the intermediate circuit capacitors discharge
before you proceed.
• Switch off all dangerous voltages connected to any control signal connectors in
reach. For example, 230 V AC may be connected from outside to a relay output of
the drive, inverter or converter.
• Always ensure by measuring with a multimeter (impedance at least 1 Mohm) that
there are no parts under voltage in reach.
4 NETA-21 remote monitoring tool
Layout
The following figures describe the front and bottom layout of the NETA-21 remote
monitoring tool and the NEXA-21 extension module.
1 Front panel labeled with a black sticker and equipped with indicator LEDs
2 PWR, STAT, MON – power, status and monitoring indicators, see Diagnostic LEDs
3 SD – SD/SDHC memory card slot
4 USB – USB host port for third party extensions
5 PNL 1/PNL 2 – RJ45 type connector providing an EIA-485 level interface for a panel bus
6a PC ETH 1 – RJ45 type connector providing a 10BASE-T / 100BASE-TX Ethernet
connection for a PC in the public network
6b ETH 2 – RJ45 type connector providing a 10BASE-T / 100BASE-TX Ethernet connection
for a drive, converter or inverter
7 36-pin connector for the NEXA-21
8 SD RJ45 – SD button is used for removing the SD/SDHC card safely and activating a
DHCP server for the first access to the user interface
9 Reset button is used for rebooting the remote monitoring tool
10 NEXA-21 provides a DDCS fiber optics connection, secondary power input and one extra
USB port
11 PWR, STAT, RX, TX – power, status and RX/TX indicators, see Diagnostic LEDs
12 Fiber optic transmitter DDCS
13 Fiber optic receiver DDCS
4
7
12
10
13
4
5
11
1
3
85
6a
6b
9
2
NETA-21 remote monitoring tool 5
1 X1 10…30 V DC – power supply input
2 X2 EIA-232 port
• 9-pin D-sub male type connector X2
• EIA-232 level interface for a modem
3 X3 EIA-485 port
• 4-pin detachable screw type connector X3
• EIA-485 level interface for a Modbus network
4 Termination jumpers for the link connected to X3
5 X11 AC/DC 24V – secondary power supply input
5
4
3
2
1
6 NETA-21 remote monitoring tool
Mechanical installation
Installing NEXA-21 to NETA-21
1. Press the NEXA-21 against the NETA-21.
2. Tighten the grounding screw (A).
Do not use excessive force.
Mounting instructions
1. Protect the devices from the drilling dust.
2. Drill the holes for the fastening screws of the mounting rail.
3. Fasten the mounting rail (B).
4. Snap the remote monitoring tool onto the rail (C).
DIN rail mounting clip
A
B
C
NETA-21 remote monitoring tool 7
Electrical installation
Grounding
The ground of the remote monitoring tool is connected to the mounting rail by means
of an grounding clip. The mounting rail onto which the remote monitoring tool is to be
mounted must be grounded to a noiseless ground. If the rail is not mounted on a
properly grounded base, a separate grounding conductor must be used. The
conductor must be as short as possible and its cross-sectional area must be 6 mm2at
least.
Note: No solid copper conductor may be used (stranded wire allowed only).
Power connections
Connect the power supply to connector X1 of the NETA-21 module. The NETA-21
supplies also the NEXA-21. For information on the connector type, voltage and power
specification, see Connectors.
Note: In the NEXA-21, there is an alternative power supply input (X11), which you
can use for supplying power to the NEXA-21 and the NETA-21.
Connections with drives, converters and inverters
The remote monitoring tool is compatible with various ABB drives, converters and
inverters.
As shown on page 8, the NETA-21 can be connected directly to a panel bus if the
drive (/inverter/converter) has an Assistant control (ACS-AP-x) panel.
If the unit to be monitored does not have the ACS-AP-x panel but it is equipped with
an RDCU control unit, you can connect the unit to the NETA-21 through the fiber optic
channel of the NEXA-21. See the connections diagrams in section Data link
connections – Drive (/converter/inverter) with the RDCU control unit.
8 NETA-21 remote monitoring tool
Data link connections –
Drive (/converter/inverter) with the ACS-AP-x panel
The maximum number of devices per panel port bus is 10.
Set a unique ID to each node on the panel bus. See the appropriate
drive/converter/inverter manual.
Termination switch
of the bus
ABB drive,
converter or
inverter
NETA-21
PC
PC
ETH1
ETH2
Link to Ethernet networks
PNL1
PNL2
Note: The RJ45 connectors of the control panel are located in the “ceiling” of the control panel
housing. Beside the left-hand side RJ45 connector in the control panel housing there is a switch
that must be pushed upwards in the last drive of the chain to terminate the bus.
Termination switch
of the bus
ABB drive,
converter or
inverter
ABB drive,
converter or
inverter
ABB drive,
converter or
inverter
NETA-21 remote monitoring tool 9
Data link connections –
Drive (/converter/inverter) with the RDCU control unit
The figure below shows the data connections in a ring topology when a fiber optic link
is used.
Connect the NETA-21 primarily to fiber optic channel ch3 on the RDCO connector
unit. You can connect the NETA-21 also to ch0 if the maximum speed of the DDCS
communication does not increase above 1 Mbit/s.
The default the NETA-21 settings for a DDCS network are ring topology and 1 Mbit/s
communication speed. With these settings, the NETA-21 can normally auto-detect
drives (/converters/inverters) connected to an NDBU branching unit. The NETA-21
auto-detects connected devices when the fiber is connected for the first time. If
reconfiguration is needed afterwards, it can be done in the web user interface.
If the DDCS communication speed is higher than 1 Mbit/s, the NETA-21 settings and
device interfaces must have the same speed settings as the NDBU unit.
RDCO
RDCU
RDCO
RDCU
RDCO
RDCU
T T
TT
R RTR
Drive/converter/inverter 1 first in the ring,
drive/converter/inverter 10 last in the ring
Tx
Rx
NETA-21
NEXA-21
PC
ETH1
ETH2
PC
ABB drive,
converter or
inverter
Link to Ethernet networks
ABB drive,
converter or
inverter
ABB drive,
converter or
inverter
10 NETA-21 remote monitoring tool
The figure below shows the data connections in a star topology when a fiber optic link
is used.
MSTR
CH0
CH1
NDBU-x5
ABB drive,
converter or
inverter
TT
RR
Drive/converter/inverter 1 to CH0 … drive/converter/inverter 9 to CH8
Tx
Rx
NEXA-21
PC
ETH1
ETH2
NETA-21
PC
Link to Ethernet networks
RDCO
RDCU
ABB drive,
converter or
inverter
RDCO
V101
V102
V103
V104
V105
V106
RDCU
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