AC2048 - Interface IFM - Free user manual and instructions

Product type	AS-i interface with pneumatic output (AirBox)
Model	AC2048
Brand	IFM
Power supply	24 V DC SELV (external) and via AS-i flat cable (31.6 V DC, 165 mA)
Integrated sensor supply	100 mA total per module
Electrical connection type	M12 socket for sensors, EEMS wiring base for AS-i
Pneumatic connection	Legris 3000 system / 8 mm (compressed air) and 4 mm (auxiliary air)
Operating pressure	3 to 8 bar (compressed air); auxiliary air ≥ 3 bar
Pneumatic output	4/2 distributor, manual control by ¼ turn screw
Logic inputs	2 inputs for 2/3-wire PNP sensors according to IEC 947-5-2
Data bit assignment	D0: I-1, D1: I-2, D2: O-3, D3: not used
LED indicators	AS-i PWR LED (green), ext. PWR LED (green), input/output LEDs (yellow)
Protection rating	IP67 (auxiliary air inlet closed if not connected)
Electromagnetic compatibility	EN 61000-4-2: contact discharge ±4 kV, air discharge ±8 kV
Temperature range	Not specified, suitable for industrial environment
Maintenance	Use filtered air (5 µm); initial lubrication determines subsequent operation
Safety	Do not exceed 8 bar; emergency stop cuts external power, deactivate outputs via software
Addressing	Address 0 at delivery, adjustable via addressing unit (1 to 31)
Weight	Approximately 150 g (estimated)
Dimensions (L x W x H)	Approximately 80 x 40 x 60 mm (estimated)

Frequently Asked Questions - AC2048 IFM

How to address the AC2048 module?

Use an addressing unit to assign a free address between 1 and 31. At delivery, the address is 0. Mount the module on the unit, assign the address, then install it on the wiring base connected to the AS-i network.

What types of sensors can be connected?

2-wire or 3-wire PNP digital sensors according to IEC 947-5-2, or mechanical position detectors, can be connected between pins 1 and 2/4 of the M12 sockets.

What is the required compressed air pressure?

The AirBox operates with compressed air from 3 to 8 bar. Peaks above 8 bar can irreversibly damage the module.

What to do if the AS-i PWR LED does not light up?

Check the connection of the AS-i flat cable (yellow and black) and the network power supply. The green LED indicates the presence of voltage via the network.

How to use the manual control of the pneumatic output?

Actuate the manual control screw (¼ turn) by pressing/releasing or pressing/turning/locking. The electrical control remains priority.

Can vacuum be used with the AirBox?

Yes, optionally with auxiliary air (3 to 8 bar) via the Legris 4 mm connection. This allows a vacuum of 90%.

How to clean the module?

Use a dry or slightly damp cloth. Do not use solvents. In a dusty environment, mount the filter downwards.

What to do in case of electrostatic discharge?

Observe EMC measures: equipotential bonding, cable separation, distance from static sources. If not observed, risk of injury, sparks or damage.

Where to find the complete datasheet?

At www.ifm-electronic.com, enter the article number AC2048 under 'Datasheet' for detailed information on compressed air, EMC and ESD.

What is the power consumption of the module?

The AS-i input is 31.6 V DC and 165 mA max. The output is 30 V DC and 100 mA max. The sensor supply is 100 mA total.

USER MANUAL AC2048 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".