Drive Temperature; Short Circuit - ABB ACS800 Firmware Manual

Figure: DC voltage control and trip limits.
HIGH VOLTAGE TRIP LIMIT: 130%
HIGH VOLTAGE CONTROL LIMIT: 124%
BRAKE CHOPPER LIMIT: 120%
LOW VOLTAGE CONTROL LIMIT: 82%
CHARGING LIMIT: 79%
LOW VOLTAGE TRIPPING LIMIT: 60%
According to the above figure, for a 400 V drive unit the voltage level at the
intermediate circuit in the overload area should be 560 V DC corresponding to U
(415 V), while in the underload area it should be 513 V DC corresponding to U
(380 V).
• DC overvoltage trip limit will be 1.3 * 560 = 728 V DC
• DC undervoltage trip limit will be 0.6 * 513 = 307 V DC
• High voltage control limit will be 1.24 * 560 = 695 V DC
• Low voltage control limit will be 0.82 * 560 = 459 V DC
• Brake chopper limit will be 1.2 * 560 = 672 V DC
• Charging limit will be 0.79 * 560 = 442 V DC

Drive temperature

The drive supervises the inverter module temperature. There are two supervision
limits: warning limit and fault trip limit. If the inverter module temperature exceeds
o
115 C, the warning is generated, and if the temperature exceeds 125
generated. Signal

Short circuit

There are separate protection circuits for supervising the motor cable and the
inverter short circuits. If a short circuit occurs, the drive will not start and a fault
indication is given.
01.10 can be used for monitoring the temperature.
79
1max
1min
o
C, the fault is
Program features