Carrier 19XRV specifications A19-1921, TB1 I/O Terminal Designations

Vmax = Maximum measured phase-to-phase voltage (A to B, B to C, C to A)

Vmin = Minimum measured phase-to-phase voltage Imbalance Calculation Formula

8.Take a final thermal measurement of the capacitor bank and power after finalizing the installation to ensure all connections are good.

9.If a ground fault occurs, then do the following:

a.Check for a ground in the motor or motor wiring.

b.Check for damage to wiring insulation and that wiring is dry.

c.Verify the motor wiring is separated from ground and there is no connection between phases.

d.Check for failed IGBTs.

10.If an Overcurrent fault occurs, then do the following:

a.Check for excessive load and verify load limit set- tings on the ICVC.

b.Check motor and wiring insulation.

c.Check parameter settings on VFD_CONF screen in the ICVC.

Check Internal Jumpers — On the Main VFD Con- trol board there are two jumpers labeled J1 HARDWARE EN- ABLE and J2 SAFETY ENABLE. J1 should be removed and J2 should be in place. See Fig. 10.

There are two jumper wires that connect a particular termi- nal to chassis ground. The MOV and AC EMI jumper should be connected to the PE-A terminal. The COMMON MODE CAPACITORS to GROUND jumper should be connected to a standoff rather than the PE-B terminal.

Use the recommended tools as follows when connecting jumper wires in Frame 6 and in Frame 7:

•Recommended torque (screws and nuts) = 1.36 N·m (120.0 lb·in)

•Recommended hex socket = 7 mm

•Recommended screwdriver = T20 star type

See Fig. 11A and Fig. 11B for the correct positions of the jumpers.

6Embedded EtherNet/ Network cable connection. IP Connector