Installing
4.4 Installing Control Unit
4.4.2
Terminal strips of the CU
*) The following applies to systems complying with UL: A maximum of 3 A 30 V DC or 2 A 250 V AC may be connected via
terminals 18 / 20 (DO 0 NC) and 23 / 25 (DO 2 NC).
①
The analog input is supplied from an external 10 V voltage.
②
The analog input is supplied from the internal 10 V voltage.
③
Wiring when using the internal power supplies. Connecting a current sourcing contact.
④
Wiring when using external power supplies. Connecting a current sourcing contact.
⑤
Wiring when using the internal power supplies. Connecting a current sinking contact.
⑥
Wiring when using external power supplies. Connecting a current sinking contact.
Note
When a current sinking contact is connected, a ground fault at the digital input can lead to
unintentional setting of the input.
62
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG