Cooling circuit

Material damage due to overheating!

The drive system is intended solely for operation in a closed cooling circuit with a heat exchanger. Operation without the specified liquid cooling system is not permitted. The drive system will overheat, causing it to be destroyed.

Preventive measures:

• Only operate the drive system with the specified cooling system

• Connect the PTC thermistor from the servo motor to the temperature monitoring equipment

• Activate the I²t monitoring of the servo motor in ID32773 'Service bits', bit 14

Material damage due dew forms!

When the surface temperature of the cooling plate or the cooled motors drops below the dew point, the water which bound in the air, condenses on the surface. The dew point depends on the ambient temperature and the humidity.

Preventive measures:

• The flow temperature of the coolant must be designed based on the dew point table so that the surface temperatures of the cooling plate and the cooled motors do not fall below the dew point and there is therefore no condensation. (see dew point table)

Warning against pressurised lines!

Closed cooling circuits are under high pressure. Opening the circuit while it is under high pressure can result in injuries from escaping coolant. The sudden pressure change can cause lines to rip loose or make uncontrolled movements.

Steps to prevent:

• Never open a line system that is under high pressure!
• Drain the coolant at the provided point, e.g. drain valve. Pay attention to the instructions of the manufacturer of the cooling device.
• Collect the cooling liquid in a proper containment. Store or dispose it according to the local instructions.
• Wear adequate protective clothing, e.g. goggles, gloves, safety shoes.