AKT2G-AC-FAN-001

Fan cartridge for EtherCAT and Bus Terminals

Introduction

The AKT2G-AC-FAN-001 fan cartridge is used for forced ventilation within the terminal housing and ensures better heat dissipation from the housing. It extends the thermal operating range of EtherCATClosed ***EtherCAT is an open, high-performance Ethernet-based fieldbus system. The development goal of EtherCAT was to apply Ethernet to automation applications which require short data update times (also called cycle times) with low communication jitter (for synchronization purposes) and low hardware costs Terminals (AKT2G-xxx) and K-Bus Terminals (AKT-xxx) and offers a wide range of new application options. The cartridge is installed on the underside of the terminal segment and covers a width of four standard terminals (4 x 12mm). It consists of the fan, an installation plate, a terminal strip (24 V DC, 0 V DC, diag, mode) and a bracket for fixation on different terminal housings (see Figure 8-1: Components AKT2G-AC-FAN-001).

Figure 8-1: Components AKT2G-AC-FAN-001

Technical Data

Technical data AKT2G-AC-FAN-001
Number of channels 1 fan
Nominal voltage 24 V DC (-15 %/+20 %)
Current consumption (at 24 V operating voltage) ca. 45 mA
Operating modes temperature-controlled, full speed, frequency controlled
Rotational frequency fan adjustable in 9 steps via frequency (1…9 Hz), max. ~5,500 rpm
Diagnostics, max. output current fan fault, 15 mA
Life span MTBF typ. = 280,000 h @ 20°C
Special features increased performance and extended temperature range for various terminals
Dimensions (W x H x D) 47 mm x 22 mm x 55 mm
Weight 32 g (incl. bracket)
Operating / storage temperature -25…+70°C/-40…+85°C
Relative humidity 95 %, no condensation
Vibration / shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity / emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class / installation pos. IP 20/see Mounting and Demounting
Approval CE, cULus

Mounting and Demounting

The AKT2G-AC-FAN-001 fan cartridge is snapped onto a 48-mm wide terminal group of Kollmorgen standard or highdensity (HD) terminals using the "8-channel/16-channel fan cartridge holder" supplied as an accessory.

Fan cartridge holder, 8-channel
Fan cartridge holder, 16-channel

The width of the individual terminals may be 12mm (single width) or 24mm (double width) or a combination of both.

The mounting of the AKT2G-AC-FAN-001 is described below by way of an example.

Mounting


  • Risk of injury through electric shock and damage to the device!

    Bring the Bus Terminals system into a safe, de-energized state before starting mounting, disassembly or wiring of the Bus Terminals.

  1. Assemble the terminals to be ventilated into a group with a width of 48mm and snap the holder on the left in the lower ventilation cut-outs of the first terminal to be ventilated, as shown in Figure 8-2: Engaging the holder for the fan cartridge.

    Figure 8-2: Engaging the holder for the fan cartridge

    The holder is correctly engaged when a clear click sound is heard.

    Correctly engaged holder, front view
    Correctly engaged holder, side view
  2. Push the fan cartridge onto the holder as shown in figure Attaching the fan cartridge. The holding tab and the recess (see figure Push fan cartridge with recess over holding tab) on the fan cartridge fit each other and close flush in a downward direction.
    Attaching the fan cartridge
    Push fan cartridge with recess over holding tab
  3. Make sure that the latching tab is pushed into the groove until a click noise is heard as in AKT2G-AC-FAN-001. The fan cartridge is now correctly attached.

    Figure 8-3: Push latching tab into groove

    Correctly attached fan cartridge, front view
    Correctly attached fan cartridge, side view

Removal

  1. To dismantle, pull the fan cartridge off the terminal group in the direction of the arrow (see the following figure).

    Figure 8-4: Pull the fan cartridge off towards the front

  2. To detach the holder from the terminal, place a screwdriver between the terminal and holder (see the following figure) and carefully lever until the holder releases.

    Figure 8-5: Remove the holder using a screwdriver


  • Clearance of the fan cartridge module

    When installing terminals with mounted fan cartridge module ensure that an adequate spacing (> 35 mm) is maintained between other components above and below the terminals (incl. fan cartridge) in order to guarantee a flawless operation of the fan cartridge and adequate ventilation of the terminals.

LED Display and Connection

Figure 8-6: AKT2G-AC-FAN-001 LED

Diagnosis LED

LED Display
On
Err		 off No power supply
green on supply voltage present, fan does not move, revolution temperature-controlled
flashing Operating display, flashing frequency depends on revolution (see table connection “Mode”)
red Error / fan malfunction

Connection

Designation Meaning
24 V +24 V power supply
0 V 0 V power supply
Mode

Input speed regulation via external voltage

  • 0 V, revolution temperature-controlled
  • 1 Hz, approx. 2700 U/min
  • 2 Hz, approx. 3150 U/min
  • 3 Hz, approx. 3600 U/min
  • 4 Hz, approx. 3960 U/min
  • 5 Hz, approx. 4290 U/min
  • 6 Hz, approx. 4620 U/min
  • 7 Hz, approx. 5010 U/min
  • 8 Hz, approx. 5370 U/min
  • 9 Hz, approx. 5500 U/min
  • High level (11 - 24 V): max. revolution, approx.. 5500 U/min.
Diag Output diagnosis (max. output current 15 mA)
  • Low level: Error/ fan malfunction
  • High level: normal operating status, no malfunction

Basic Function Principles and Commissioning

Area of application

The AKT2G-AC-FAN-001 fan cartridge is delivered ready to operate. No adjustments need to be made to the device.

A typical application of the fan module is extension of the performance range of the terminals through forced cooling. This enables the AKT2G-SM-L15-000 EtherCAT servo terminal to operate with higher output current so that the performance is on a par with the AKT2G-SM-L50-000 with the benefit of a 50% smaller footprint.

A further application is extension of the operating temperature range of the terminals. Depending on the technical specification, the fan module enables the terminals to operate at temperatures of up to 70°C. The exact terminal-specific information for this application can be found in the documentation for the respective terminals.

Commissioning

  • Connect the AKT2G-AC-FAN-001 fan cartridge according to the instructions in the section LED Display and Connection.
  • The fan can be operated in three different modes:
    • Demand-based control via an integrated temperature sensorClosed A sensor is a type of transducer that converts one type of energy into another for various purposes including measurement or information transfer (default, only power supply required)
      • The fan cartridge starts operating at approx. 40°C ( ̴2.700 U/min) and increases the speed stepwise with increasing temperature
      • From approx. 55°C the fan reaches the full speed ( ̴5.500 U/min)
      • If the temperature decreases below approx. 35°C, the fan cartridge switches off
    • Continuous operation at full load (in addition to the power supply a high signal is applied at the mode pin.)
    • Frequency controlled by an externally applied frequency (1 – 9 Hz) at the Mode pin, which is converted internally in steps from 2,700 rpm to max. ~5,500 rpm. A digital output terminal, for example, can be used as an external source. The measurement of the internal terminal temperature is used as reference for speed control of the fan via the frequency.
  • In case of error there is a low signal on the "Diag" output and the LED display lights up red.