Danfoss iC2 - Page 171

Application Guide | iC2-Micro Frequency Converters
P 5.7.4 DC Brake Current %
Use this parameter to enter a value for current as a percentage of the rated motor current. See P 4.2.2.3 Nominal Current. When the
speed is lower than the limit set in P 5.7.5 DC Brake Frequency, or when the DC-brake Inverse function is active, (in parameter group
9.4.1. Digital Inputs set to [5] DC-brake Inverse; or via the serial port), a DC-brake current is applied on a stop command. See P 5.7.3 DC
Brake Time for duration.
Default value: 50 Parameter type: Range (0–150)
Parameter
number:
201 Unit: %
Data type: uint16 Access type: Read/Write
 NOTICE
MOTOR OVERHEATING
The maximum value depends on the rated motor current. To avoid motor damage caused by overheating, do not run at 100% for
too long.
P 5.7.5 DC Brake Frequency
Use this parameter to set the DC-brake cut in speed for activation of the DC-brake current set in P 5.7.4 DC Brake Current, together with a
stop command.
Default value: 0.0 Parameter type: Range (Size Related)
Parameter
number:
204 Unit: Hz
Data type: uint16 Access type: Read/Write
P 5.7.6 DC Hold Current %
Use this parameter to set the holding current as a percentage of the rated motor current, see P 4.2.2.3 Nominal Current). The parameter
holds the motor function (holding torque) or preheats the motor. This parameter is active if DC hold is selected in P 5.6.2 Start Function
as [0] DC Hold/Delay Time or P 5.7.1 Function at Stop as [1] DC Hold / Motor Preheat.
Default value: 50 Parameter type: Range (0–160)
Parameter
number:
200 Unit: %
Data type: uint16 Access type: Read/Write
 NOTICE
The maximum value depends on the rated motor current. Avoid 100% current for too long. It may damage the motor.
P 5.7.7 Quick Stop Ramp Time
Use this parameter to enter the quick-stop ramp-down time, which is the deceleration time from the nominal motor speed to 0 Hz.
Ensure that no resulting overvoltage occurs in the inverter due to regenerative operation of the motor required to achieve the given
ramp-down time. Ensure also that the generated current required to achieve the given ramp-down time does not exceed the current
limit (set in P 2.7.1 Current Limit). Activate quick stop with a signal on a selected digital input, or via the serial communication port.
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