MIRKA AIROS User manual

2Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual
Warranty
Mirka warrants that your components are free from manufacturing and material defects.
Mirka components have a 1-year warranty starting from the date of purchase. Only manufacturing and material
defects are covered by the warranty.
If a problem occurs caused by a manufacturing defect material or by workmanship, Mirka will repair your
component free of charge in accordance with the warranty terms and conditions stated herein. To keep your
component warranty valid the component must be used, maintained and operated in compliance with the
operating instructions.
Terms and conditions
Mirka’s component warranty covers defects in material and workmanship.
Components covered by the warranty:
• motor drive
• sanding unit
• polishing unit
• power supply
• communication gateway
Warranty does not cover:
• any damage caused or resulting from transport, receipt of delivery, installation, commissioning, misuse, neglect
in usage or maintenance, accidents, exposure to extreme unacceptable ambient temperature, acids, water,
unsuitable storage, excessive impact, or operation outside the rated specifications.
• defects caused by spare parts, accessories or components other than Mirka original spare parts or accessories.
• normal wear and tear items such as: backing pad, break seal, exhaust fitting, bearings, rubber mount, signal cable
or power cable.
• components that have been: modified, repaired or repair attempts (by other than Mirka authorized service), partly
or completely disassembled components.
No other than Mirka have the authority to change, extend or add to given warranty terms and conditions.
The manufacturer cannot be hold responsible for consequential damages compensations for downtime, production loss,
injuries or property damages.
A warranty claim must be submitted with as short delay as possible. A warranty claim must be submitted within the
warranty period.

2Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual 3
Installation overview
Component spare part codes
Name Mirka code
Power supply 48V MIA6513211
Power supply 24 V MIA6513411
Hilscher NT 50-RS-EN MIA6513311
Hilscher NT 50-RS-EN adapter cable MIA6514011
Motor drive MIA6513112
Shielded cable for tool (10 m) MIA6512311
48 VDC PSU
24 VDC PSU
Motor drive Tool
4-bit digital controlModbus RTU masterProfinet I/O gateway
Profinet I/O controller
Optional Hilschner NT 50-RS-EN Profinet I/O gateway addon module
J2
J1 J5, J6
J3
J4
General
• Connect the 48 VDC power supply to the motor drive (J2 connector).
• Connect the tool to the motor drive (J3 and J7 connector).
Modbus RTU interface
• Use the J1 connector to connect the motor drive to the Modbus RTU bus.
Profinet I/O gateway to Modbus RTU interface
• Connect the 24 VDC power supply to the gateway and connect the DSUB-9 adapter cable between the gateway (
X2 connector) and the motor drive (J1 connector).
Digital control interface
• Use the J6 connector to connect the common GND between the systems.
• Use the J5 connector to select the operation using the four digital input signals.
Relay interface
• The N/O relay pins are available on the J4 connector.

4Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual
Technical data
Input
Nominal input voltage 48 VDC
Input voltage range 46–50 VDC
Maximum input current 10 A
Rated power 350 W
Speed control
Speed range 4000–10000 rpm
Protection
Overload protection Yes
Overheat protection Yes
Interfaces
Input interfaces Modbus RTU (RS-485), Profinet I/O (gateway module), 4-bit digital
inputs (15–33 VDC)
Output interfaces Single pole, non-latching N/O relay, 250 VAC / 125 VDC, 10 A
Environmental
Ambient temperature 0–40°C
Humidity Maximum 95% RH, non-condensing, non-corrosive, no dripping water
Storage temperature –20 to 80°C
Dimensions
Motor drive 72 x 30 x 200 mm (W x H x D)
Motor drive mounted in DIN-rail holder 95 x 55 x 210 mm (W x H x D)
Safety instructions
Electrical installation must be carried out by a competent
electrician!
Warnings
Make sure that all the AC-DC power supplies are properly earthed and that the motor drive cannot come in
contact with live mains voltage.
An external emergency stop circuit is recommended.
Safety instructions
The motor drive has been designed for fixed installations only.
Do not perform any voltage withstand tests on any part of the motor drive or the tool. Product safety has
been fully tested at the factory.
Ground yourself with an anti-static wristband before touching the motor drive (setting jumpers and similar
actions) to avoid electrostatic voltage discharge damage to the motor drive.

4Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual 5
Before running the tool
Before starting the tool, check that the tool is mounted properly and ensure that the motor drive is
installed properly.
Dimensions specified
in millimeters.
The motor drive PCB comes mounted in a DIN-rail holder that can be attached to a standard 35 x 7.5mm EN50022
DIN-rail, but the motor drive PCB can be removed from this holder and mounted using the mounting holes instead.
If the mounting holes are used, then it is recommended to use 20 mm metal standoffs and 10 mm M3 screws when
mounting the motor drive PCB.
It is recommended to use 10 mm ferrules with plastic sleeve for each wire that is attached to any of the connectors.
The wires can then easily be pushed into the connectors and released with the help of a small flat-head screwdriver
(3.5 mm blade width, 0.6 mm blade thickness).
Connector description
Connector PIN Description
J1 GND GND
J1 A Modbus RTU RS-485 (A)
J1 B Modbus RTU RS-485 (B)
J1 GND GND
Connector PIN Description
J2 GND GND
J2 48V 48 VDC input
Motor drive overview
Motor drive PCB connectors, buttons, jumpers, indicators, mounting holes and dimensions
B
J3
JP13
JP15
J4
D17
D21
NTC+
NO
D26
D2
D18
D3
D19
D20
D23
D24
GND
J6
15V
A
DI4
GND
DI2
JP3 JP4
J5
DI1
D4
JP2 JP1
S2
S1
GND
155
D36
P+
C+
P-
GND
NTC-
72
D22
D25
JP12
GND
J1
D30
D14
J2
C-
PhaseB
COM
DI3
200
48V
15
6
PhaseA
PhaseC
6
ø3,20
D29

6Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual
Connector PIN Description
J3 P+ P+
J3 C+ C+
J3 C– C–
J3 P– P–
J3 NTC+ NTC+
J3 Phase A Phase A
J3 Phase B Phase B
J3 Phase C Phase C–
J3 GND GND
J3 NTC- NTC–
Connector PIN Description
J4 COM Relay COM
J4 NO Relay NO
Connector PIN Description
J5 DI1 Digital speed control input bit 1
J5 DI2 Digital speed control input bit 2
J5 DI3 Digital speed control input bit 3
J5 DI4 Digital speed control input bit 4
Connector PIN Description
J6 15V 15 VDC output
J6 GND GND
Button description
Button Description
S1 Self-test button
S2 Reset button
Indicator description
Indicator Description
D2 Speed set-point indicator, lit if ≥ 4,000 rpm. Modbus RTU slave address indicator, bit 1.
D3 Speed set-point indicator, lit if ≥ 5,000 rpm. Modbus RTU slave address indicator, bit 2.
D4 Tool status indicator. Lit red when the tool is stopped, lit green when the tool is running.
D14 Motor drive state indicator. Lit green when motor drive is in ON-state. Blinking green when
motor drive is in OFF-state.
D17 Speed set-point indicator, lit if ≥ 6,000 rpm. Modbus RTU slave address indicator, bit 3.
D18 Speed set-point indicator, lit if ≥ 7,000 rpm. Modbus RTU slave address indicator, bit 4.
D19 Speed set-point indicator, lit if ≥ 8,000 rpm. Modbus RTU slave address indicator, bit 5.
D20 Speed set-point indicator, lit if ≥ 9,000 rpm. Modbus RTU slave address indicator, bit 6.
D21 Speed set-point indicator, lit if ≥ 10,000 rpm. Modbus RTU slave address indicator, bit 7.
D22 Modbus RTU slave address indicator, bit 8.
D23 Lit if D2–D3, D17–D22 indicator mode is Modbus RTU slave address.

6Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual 7
Tool cable connector pinout
PIN (colour, size) Description
PE (green–yellow,
1.0 mm2)Not in use
1 (brown, 1.00 mm²) Phase A
2 (blue, 1.00 mm²) Phase B
3 (black, 1.00 mm²) Phase C
A (grey, 0.25 mm²) C–
B (pink, 0.25 mm²) C+
C (green, 0.25 mm²)
C (yellow, 0.25 mm²)
P–
NTC–
D (brown, 0.25 mm²) NTC+
E (white, 0.25 mm²) P+
NOTE: NTC– and P– are connected together to the same PIN inside the connector.
Hilscher NT 50-RS-EN adapter cable pinout (female DSUB-9)
PIN (colour) Description
1 (white, WH) GND
4 (brown, BN) Modbus RTU (A, RxD / TxD+)
5 (green, GN) Modbus RTU (B, RxD / TxD–)
SHIELD Shield
Jumper description
Jumpers Default Description
JP1 Not set Reserved for future use.
JP2 Not set If set, a terminating resistor of 270 Ω is connected across
Modbus RTU pins A and B.
JP3 Not set If set, a pull-down resistor of 10 kΩ is connected to Modbus
RTU B-pin.
JP4 Not set If set, a pull-up resistor of 10 kΩ is connected to Modbus RTU
A-pin.
JP12 Not set If set, digital speed control feature is enabled.
JP13 Not set If set, D2–D3, D17–D22 indicators will output the current
Modbus RTU slave address instead of speed set-point.
JP15 Not set Reset to factory settings.
D24 Lit if digital speed control interface is enabled.
D25 Lit if the alarm status flag is set.
D26 Relay status indicator.
D29 Modbus RTU receive indicator.
D30 Modbus RTU transmit indicator.
D36 Possible tool wiring fault.

8Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual
RS-485 configuration
BAUD R ATE 19200
PARITY EVEN
STOP BITS 1
DATA BITS 8
Coil registers (F1, F5, F15)
Address Data type Name Description
00001–00012 Uint16 Digital outputs Coils 1–11 are reserved for future use.
Coil 12 is the relay located on the motor drive.
Modbus RTU
Modbus RTU over RS-485 is used to communicate with the motor drive. The motor drive is configured as a Modbus
RTU slave device and the default slave address is 86. The slave address can be changed if it conflicts with another
Modbus RTU slave device.
The J1 connector on the motor drive is used for Modbus RTU communication. A shielded twisted pair cable is
recommended and the shield should be earthed only at one point, normally at the master device. The A-pin of the J1
connector is equivalent to RxD / TxD+ and the B-pin is equivalent to RxD / TxD–.

8Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual 9
Input registers (F4)
Address Data type Name Description
30001 Uint16 Drop RPM count The number of times the speed has dropped from
set-point by more than 25%.
30002 Uint16 Warm tool count The number of times the tool temperature has
exceeded the “warm” limit, 79°C.
30003 Uint16 Warm motor drive count The number of times the motor drive temperature has
exceeded the “warm” limit, 73°C.
30004 Uint16 Hot tool count The number of times the tool temperature has
exceeded the “hot” limit, 134°C.
30005 Uint16 Hot motor drive count The number of times the motor drive temperature has
exceeded the “hot” limit, 117°C.
30006 Uint16 Stop tool count The number of times the tool temperature has
exceeded the “stop” limit, 142°C.
30007 Uint16 Stop motor drive count The number of times the motor drive temperature has
exceeded the “stop” limit, 123°C.
30008 Uint16 Voltage out of range count The number of times the input voltage has not been
within 44 to 52 VDC.
30009 Uint16 Over-current low count The number of times the current has exceeded 15.1 A.
30010 Uint16 Over-current medium count The number of times the current has exceeded 18.2 A.
30 011 Uint16 Usage count long The number of times the run time has been more than
60 seconds.
30012 Uint16 Usage count medium The number of times the run time has been between
20 and 60 seconds.
30013 Uint16 Usage count short The number of times the run time has been less than
20 seconds.
30014 Uint16 Usage time hours Hours part of usage time.
30015 Uint16 Usage time minutes Minutes part of usage time.
30016 Uint16 Usage time seconds Seconds part of usage time.
30017 Int16 Average current Average current in mA.
30018 Uint16 Average speed Average speed in RPM.
30019 Uint16 Tool temperature Tool temperature in °C.
30020 Uint16 Motor drive temperature Motor drive temperature in °C.
30021–30030 Char[20] Firmware version Firmware version and build date, e.g. “2.0 Jan 18 14:00”.
30031–30040 Char[20] Part version Part version and motor drive serial number, e.g. “AI1.3
123456”.
30041–30046 Char[12] Product serial number Product serial number, e.g. “749474379001”
30047 Uint16 Alarm status flag Alarm status flag can hold one of the following values
at any given time. This flag is automatically cleared
after 5 seconds if the cause of the alarm trigger is no
longer present.
0x0000 = Not triggered
0x0001 = Tool overheated
0x0002 = Motor drive overheated
0x0004 = Over-current
0x0008 = Under-voltage
0x0010 = Over-voltage
0x0020 = Self-test running
0x0040 = RPM drop
0x0080 = High current
0x0100 = Tool change in progress
0x0200 = Possible tool wiring fault
0x0400 = Factory reset mode

10 Mirka® AIROS • 77 mm (3"), 125 mm (5") & 150 mm (6") • Electrical manual
Holding registers (F3, F6, F16)
Address Data type Name Description
40001–40010 Char[20] Device name Max length 19 printable characters,
e.g. “AIMD 749474379001”.
40011 Uint16 Speed set-point Speed set-point, not the actual speed, between
4,000–10,000 RPM.
40012 Uint16 Operation
Motor drive state, can be a combination of the
following:
0x0001 = RUN
0x0002 = STOP
0x0004 = ON
0x0008 = OFF
0x0010 = TOOL CHANGE START
0x0020 = TOOL CHANGE END
NOTE: When writing a new state value, the value can
only be a single state, not a combination of multiple
states, e.g. ON+RUN cannot be written simultaneously.
40013 Uint16 Slave address Defaults to 86 but can be changed if needed.
RS-485 PIN Signal Description
DSUB-9 male
1GND Reference potential, ground of power supply
4 RxD / TxD+ Receive data / Transmit data positive
5 RxD / TxD– Receive data / Transmit data negative
Profinet I/O gateway (Hilscher NT 50-RS-EN)
If the motor drive needs to be connected to a Profinet I/O device the Hilscher NT 50-RS-EN gateway can be used. The
gateway is connected to the motor drive via the DSUB-9 connector on the gateway and the J1 connector on the motor
drive. Below is the pinout for the DSUB-9 (X2 connector) found on the gateway:
A pull-up resistor of 10 kΩ is internally connected in the gateway to“RxD / TxD+”.
A pull-down resistor of 10 kΩ is internally connected in the gateway to “RxD / TxD–”.
Detailed documentation about the gateway and configuration tools can be downloaded from the Hilscher website:
https://www.hilscher.com/products/product-groups/gateways/for-the-control-cabinet-ip20/entry-level-gateways/nt-
50-rs-enmbrpns/
Configuration
The gateway comes pre-configured from Mirka as a Profinet I/O slave device. The“SYCON.net” software from Hilscher
can be used to re-configure the device. The “Ethernet Device Setup”software from Hilscher can be used to change
the network configuration, use the DCP protocol. The IP address usually needs to be re-assigned after a configuration
change.
The default configuration can be downloaded from the Mirka website www.mirka.com
Default network configuration
IP ADDRESS 192.168.2.191
SUBNET MASK 255.255.255.0
DEFAULT GATEWAY 0.0.0.0
DEVICE NAME nt50enpns
1
4
5