24 V supply voltage

The MCX91A-.. inverters have an internal 24 V voltage supply that can also be supported externally.

For size 3 – 8 inverters, the 24 V switched-mode power supply has a power of 80 W. For size 0S and 0L inverters, the internal 24 V switched-mode power supply has a power of 7.3 W.

• Devices without a safety option do not require an external backup voltage. In this case, a total of 300 mA is available at the outputs. The maximum load of the MOVILINK^® DDI connection is 150 mA. The actual current consumption of the MOVILINK^® DDI connection must be subtracted from the 300 mA.
• Devices with a safety option (CSB, CSL) always require an external backup voltage. This backup voltage must not be interrupted; otherwise, the safety options are not supplied.
• The following applies to both cases:
• If the device is supported by an external supply, the entire supply is provided by the external power supply unit. In this case, the MOVILINK^® DDI connection can be loaded with a maximum of 500 mA. For all other device outputs, the limitation of the technical data applies.

If a 24 V backup voltage is necessary, it must be switched on before the line voltage and switched off after the line voltage.