AC2049 - Interface IFM - Free user manual and instructions

Product type	AS-i AirBox Interface (pneumatic input/output module)
Brand	IFM
Model	AC2049
Power supply	24 V DC SELV (via AS-i network or external)
Compressed air pressure	3 to 8 bar (max 8 bar)
Number of inputs	2 sensor inputs (PNP, 2/3 wire)
Number of outputs	1 pneumatic output (4/2 way valve)
Electrical connection	M12 connector (sensors) and EEMS wiring base (AS-i)
Pneumatic connection	Legris 3000 system (8 mm) for compressed air; 4 mm for auxiliary air
LED indicators	Green LED (AS-i PWR), yellow LEDs (inputs/outputs), green LED (ext. PWR)
Manual override	1/4 turn screw (push/release or lock)
AS-i addressing	Free address 1-31 (default 0)
Electromagnetic compatibility	Contact discharge ±4 kV, air discharge ±8 kV (EN 61000-4-2)
Maintenance	Use filtered air (5 μm), lubricated (ISO-VG10) or unlubricated; after initial lubrication, always lubricated
Safety	Do not exceed 8 bar; cut pressure before maintenance; comply with pneumatic standards
Protection rating	IP 67 (if auxiliary air not connected)
General information	AS-i slave profile S 3.F; integrated sensor supply (100 mA max)

Frequently Asked Questions - AC2049 IFM

How to assign an AS-i address to the AC2049 module?

Mount the module on the addressing unit and assign a free address between 1 and 31. At delivery, the address is 0. Then mount the module on the wiring base connected to the AS-i network with a tightening torque of 0.8 Nm.

What is the required compressed air pressure for the AirBox?

The AirBox operates with compressed air of 3 to 8 bar. Pressure peaks above 8 bar can damage the module.

Can I use a manual override on the pneumatic output?

Yes, you can operate the pneumatic output (4/2 way valve) with the 1/4 turn manual override screw: push/release or push/turn/lock. Note that the electrical command has priority.

What do the LEDs on the AC2049 module indicate?

The green PWR LED indicates power via the AS-i network. The yellow LEDs show the status of inputs (I-1, I-2) and outputs (O-3). The green AUX LED indicates external 24 V power.

How to connect sensors to the AirBox?

Use the M12 connectors to connect 2-wire or 3-wire PNP sensors. Pin assignment is indicated in the manual (pin 1 for L+, pin 3 for L-, etc.).

Is auxiliary air mandatory?

Auxiliary air (3-8 bar) is necessary if the operating pressure is below 3 bar, if you use vacuum, or to compensate for a pressure drop due to parallel actuators. The connection is 4 mm.

How to disconnect pneumatic tubes?

To remove a tube, press the black ring while pulling the tube simultaneously.

What are the EMC precautions for installation?

The AirBox is tested according to EN 61000-4-2 (contact discharge ±4 kV, air discharge ±8 kV). To avoid discharges, follow installation rules: potential equalization, separation of signal/bus/power cables, and keep the module away from electrostatic sources.

How to maintain the AirBox?

Use filtered air (5 μm), lubricated (ISO-VG10) or unlubricated. If the module has already been used with lubricated air, it must always be lubricated; the initial lubrication is no longer effective. Follow the compressed air instructions on the IFM website.

What to do in case of input/output malfunction?

Check the LEDs: if the input LEDs do not light up, the sensor or wiring may be faulty. Check the AS-i and external power. Ensure the address is correct. Consult the product data sheet on the IFM website.

USER MANUAL AC2049 IFM

I-1 I-2 PWR AUX O-3

Function and features

The AS-i AirBox is a slave in the AS-i system (AS-i profile S 3.F). The electrical inputs are rated for the connection of binary 2-wire or pnp 3-wire sensors to IEC 947-5-2. As an alternative, mechanical position switches can be connected between pin 1 and pin 2/4.

• Integrated sensor supply (a total of 100mA per module)
• Plug-in sensor connection
• AS-i connection via EEMS module lower part
• Connection to pneumatic system via push fit tube connector Legris 3000 / 8mm, outside calibration according to CETOP standards RP 54 P
• Operation with compressed air of 3...8 bar including any pressure peaks (Pressure peaks > 8bar can cause permanent leaks and irreparable damage of the AirBox).
  • External voltage supply 24 V DC PELV
• Option: with auxiliary air 90% vacuum 3 ... 8 bar; via tube fitting Legris 3000 / 4 mm

sensor connection I-1 LED I-1, I-2 flat cable yellow flat cable black pneumatic output (2,4) NO/NC selectable LED O-3 compressed air 1 [P] exhaust 3 [R] sensor connection I-2 PWR AUX LED AS-i PWR screw for manual override LED ext. PWR auxiliary air 81[X]

Mounting

Address assignment by means of the addressing unit.

Fix the module onto the addressing unit. Assign a free address between 1 and 31; the factory preset is 0.

Mount the module onto the wired module lower part of the AS-i network, tightening torque 0.8Nm.

In a dusty environment the AirBox should be mounted with the filter facing downwards.

Compressed air

Adhere to the safety regulations and provisions for the installation of pneumatic systems. Switch off pressure.

Connect the compressed air supply 1 (P), the pneumatic output (NO/NC selectable) 2 and 4 and, if necessary, the exhaust 3 (R) to the pneumatic system. Cut the connection tube straight and push it into the tube fitting until you can feel the tube latch.

Auxiliairy air

Auxiliairy air is needed

• if pressures below 3bar are to be used
• if a vacuum is to be used
• for parallel wiring of valves if a considerable pressure drop is to be expected (with a high simultaneity factor)

The auxiliary air must be rated for at least 3 bar to enable switching of the valve.

The auxiliary air fitting is integrated in the module and is activated by connecting the 4mm tube for compressed air. If no tube is connected, this pneumatic input is closed (IP67).

Removal of the tubes

To remove the tubes, push the black ring and pull out the tube at the same time.

Manual override

The pneumatic output (NO/NC selectable) can be activated manually by means of the screw for the manual override (pressing / releasing or pressing / turning / locking).

Electromagnetic compatibility (EMC):

The AirBox is rated for operation in industrial environments. The test of the electrostatic discharge was carried out in accordance with EN 61000-4-2 with the following test levels:

• Contact discharge ±4kV
• air discharge ±8kV

Special applications such as the conveying and distribution of bulk material can generate higher electrostatic charges.

To avoid electrostatic discharge the following remedial actions are possible, among others:

• Equalisation of potential according to the installation instructions

• Separate laying of

• signal and bus cables

• equipotential bonding conductors
• power cables

- physical separation of the AirBox and all cables from all parts carrying or discharging electrostatic charges

If these discharges are not avoided there is the danger of:

• injury to/incapacitation of operators and maintenance staff
• spark formation
• damage to the AirBox
• damage to the electrical equipment

The electrical triggering has priority over the mechanical triggering.

I-1 3 4 2 1 3 4 2 1 I-2

M12 socket	I-1/Pin	I-2/Pin
sensor supply L+	1	1
sensor supply L-	3	3
data input I	4	—
data input II	2	4
not used	5	2+5

Assignment of the data bits

Data bit	D0 D1 D2 D3
inputs / outputs	I-1 I-2 O-3 —

If the external 24 V voltage is switched off (e.g. by emergency off), the output of the AirBox in the controller have to be reset by software.

If the voltage is supplied again, the output can be set again if necessary.

Operation

Check the safe functioning of the unit. Display by LEDs:

• LED green: supply voltage via the AS-i system
• LEDs yellow: function display
• LED green: external voltage supply

For trouble-free operation sufficiently treated air must be used (filtered air 5μm, lubricated (ISO-VG10)1) or not lubricated). Once the AirBox has been operated with lubricated air, it always has to be operated with lubricated air as the oil removes the initial lubrication.

1) You can find further notes on compressed air and EMC/ESD for the AirBox at www.ifm-electronic.com. Enter the article number of your AirBox on the start page under "Data sheet direct". You receive the additional product information by clicking on "Additional data".