LOGO!

11.1Touchpad screens

11.1.1Home

The following functions are available in the Aggregat (unit) area on the left:

• Freigabe (enable) is granted with the gray button; as soon as it has been granted, the green indicator lights up
• Reset must be pressed when the blue indicator next to it flashes, to acknowledge errors
• with Auto Fill, after both cooling circuits have been blown out, the system checks whether the fill level is still at maximum. If not, a valve opens the circuit for refilling, so that the fill level is automatically kept at the correct level

The following status indicators are also available:

• Befüllen aktiv (filling active)
• Alles OK (all OK)
• pH value measurement (IRS ICEcube PRO+ only)
• Conductivity measurement (IRS ICEcube PRO+ only)

The target temperature specifies the desired cooling water temperature with which the DUT is to be temperature-controlled. The water temperature of the facility water connection must be entered.

The following functions are available in the Kühlkreis 1 and Kühlkreis 2 (cooling circuit 1 and 2) areas:

• activating the pump with the Pumpe (pump) button
• blowing out the cooling water with the Ausblasen (blow out) button
• leak test of the DUT circuit with the Dichteprüfung (leak test) button

The following status indicators are also available:

• Ist-Temperatur (actual temperature): measured temperature of the supply line
• Ist-Durchfluss (actual flow): measured flow
• Druck (pressure): measured pressure
• Kreislauf befüllt (circuit filled) indicator

11.1.2Configuration

The following functions are available in the Konfiguration (configuration) area on the left:

• select the Kreise gekoppelt (circuits coupled) button if the circuits are connected to each other

• Use the Pumpe regelt auf (pump controls to) rotary switch to switch between pressure-controlled and flow-controlled operation

The following status indicators are also available:

The target temperature of the DUT is entered manually here (10–70 °C).

The following functions are available in the Kühlkreislauf 1 and Kühlkreislauf 2 (cooling circuit 1 and 2) areas:

• Setting the target pressure in Soll-Druck (0–9 bar)
• Setting the target flow in Soll-Durchfluss (0–50 l/min)
• Setting the temperature correction factor in T Korrekturfaktor
• Setting the temperature correction value in T Korrekturwert (offset of the temperature sensor)
• Setting the continuous blow-out duration in Ausblasdauer kontinuierlich
• Setting the pulsed blow-out duration in Ausblasdauer Pulsen

The following status indicators are also available:

• Ist-Temperatur
• Ist-Durchfluss
• Pressure
• Kreislauf befüllt light

11.1.3Status and error log

The various error indicators are listed here; an error is present when they light up red. Troubleshooting is described in Troubleshooting.

The gray Dichteprüfung KK (leak test, cooling circuit) button performs a pressure test of the cooling water circuits. The circuit is pressurized with compressed air and the pressure drop is measured, which allows conclusions to be drawn about correct and leak-tight lines / DUTs. The green and yellow lights below it show the status.

The software version and the status, including the heating element temperatures, are shown in the lower part.

11.1.4Switching counter

The switching cycles of the solenoid valves Q1–Q11 are recorded and displayed here for maintenance and repair measures.

11.2Troubleshooting

Not-Aus Extern (external emergency stop):

Make sure that the system can be switched on again safely, unlock the emergency stop, and on the screen first reset the cooling unit and then enable it again.

Füllstand < Min (fill level below minimum):

Fill up the cooling water to maximum via the connection provided for this purpose on the cooling unit.

Fill level above maximum:

Drain the cooling water via one of the two cooling circuits. Connect a hose to the supply of KK1 or KK2 (cooling circuit 1 or 2) and place the hose in a collecting container. Switch on the respective pump to pump the coolant out of the tank.

Overpressure cooling circuit 1 and 2:

Stop the pumps. Check the hoses for kinks. Make sure that no object is standing on the hoses or interrupting or impairing the flow. With pressure-controlled pump control, reduce the target pressure.

Overtemperature heating element 1 and 2:

Deactivate the heating elements. Reduce the target temperature in the tank.

Frequency converter 1 and 2:

Switch off the IRS ICEcube.

11.3LOGO! Modbus TCP mapping