ABB ACS850 - Voltage Ctrl; Brake Chopper

Parameters 231
00.0… 1000.0% Motor power in percent of nominal motor power. 1 = 1
45.09 Energy reset Resets the energy counters 01.35 Saved energy, 01.36
Saved amount and 01.37 Saved CO2.
Done Reset not requested (normal operation). 0
Reset Reset energy counters. The value reverts automatically to
Done.
1
47
47 Voltage ctrl
Overvoltage and undervoltage control settings. See also
section DC voltage control on page 77.
47.01 Overvolt ctrl Enables the overvoltage control of the intermediate DC link.
Fast braking of a high inertia load causes the voltage to rise
to the overvoltage control limit. To prevent the DC voltage
from exceeding the limit, the overvoltage controller
automatically decreases the braking torque.
Note: If a brake chopper and resistor or a regenerative supply
section are included in the drive, the controller must be
disabled.
Disable Overvoltage control disabled. 0
Enable Overvoltage control enabled. 1
47.02 Undervolt ctrl Enables the undervoltage control of the intermediate DC link.
If the DC voltage drops due to input power cut off, the
undervoltage controller will automatically decrease the motor
torque in order to keep the voltage above the lower limit. By
decreasing the motor torque, the inertia of the load will cause
regeneration back to the drive, keeping the DC link charged
and preventing an undervoltage trip until the motor coasts to
stop. This will act as a power-loss ride-through functionality in
systems with high inertia, such as a centrifuge or a fan.
Disable Undervoltage control disabled. 0
Enable Undervoltage control enabled. 1
47.03 SupplyVoltAutoId Enables the auto-identification of the supply voltage.
Disable Auto-identification of supply voltage disabled. 0
Enable Auto-identification of supply voltage enabled. 1
47.04 Supply voltage Defines the nominal supply voltage. Used if auto-identification
of the supply voltage is not enabled by parameter 47.03
SupplyVoltAutoId.
0 … 1000 V Nominal supply voltage. 10 = 1 V
48
48 Brake chopper
Control of the brake chopper.
48.01 Bc enable Enables the brake chopper control.
Note: Before enabling the brake chopper control, ensure that
a brake resistor is connected and the overvoltage control is
switched off (parameter 47.01 Overvolt ctrl).
Disable Brake chopper control disabled. 0
EnableTherm Brake chopper control enabled with resistor overload
protection.
1
Enable Brake chopper control enabled without resistor overload
protection. This setting can be used, for example, if the
resistor is equipped with a thermal circuit breaker that is wired
to stop the drive if the resistor overheats.
2
No. Name/Value Description FbEq