Compax3 Hardware - Can the Compax and Compax3 Products Take a DC Voltage Supply?
Related FAQ: Can the Compax3 be used at 24volts? Or other dc voltage? (with video)
Yes. All Compax3 products can take a DC voltage instead of AC voltage input. All drives rated for 240 V input can be supplied up to 340 VDC and all drives rated for 480 V input can be supplied up to 680 VDC.
For the C3 xxxx V2 products use the following installation connections.
| C3 xxxx V2 |
|---|---|
DC + | X1/1 L |
DC - | X1/2 N |
PE | X1/3 PE |
For the C3 xxxx V4 products use the following installations connections.
| C3 xxxx V4 |
|---|---|
DC + | X2/4 +HV |
DC - | X2/5 -HV |
PE | X2/3 PE |
For the C3S running on DC power, the internal mains filter has no function, so ensure that the DC power supply includes a DC filter. When the DC voltage is connected to X2, the drive can be supplied up to 680V without any derating. Otherwise, connecting to X1 (using L1 and L2 instead of +HV and -HV) the maximum allowed DC voltage is max 500V. The Compax3's overvoltage protection and regenerative circuitry is active when powering through either X1 and X2.