Lenze E82xVxxxKxxxxx - Manual (Page 293)

Function library
Acceleration, deceleration, braking, stopping
DC braking (DCB)
10
l
293 EDS82EV903 EN 3.0
Adjustment
1. Use C0035 to select whether a brake voltage or a brake current shall be selected.
2. Enter the brake voltage or brake current under C0036 in percent.
– If C0035 = 0, the data refers to the rated voltage of the controller.
– If C0035 = 1, the data refers to the rated current of the controller.
3. Select how to activate the DC injection brake:
– Via digital input signal (configuration with C0410/15)
– Automatically when the values are fallen below the operating threshold C0019
(condition: C0106 > 0.00 s)
Activate DC−injection braking via input signal (DCB)
Link C0410/15 with a digital signal source.
In case of HIGH−active inputs, the DC−injection braking (DCB) remains active as long as the
signal is on HIGH level.
After the hold time (C0107) has elapsed, the controller sets pulse inhibit (keypad display:
c).
)
Note!
In addition to the free configuration in C0410 you can also use the fixed
assignment in C0007 to link the function with a digital input.
Activate automatic DC−injection braking (auto DCB)
1. Select the hold time >0.00 s under C0106:
– The automatic DC−injection braking (auto DCB) is active for the set time.
– Afterwards, the controller sets pulse inhibit (keypad display:
c).
2. Select the condition for activating the automatic DC−injection braking under C0196:
– C0196 = 0: auto DCB active if the output frequency is lower than the operating
threshold (C0050 < C0019)
– C0196 = 1: auto DCB is active if the output frequency is lower than the operating
threshold (C0050 < C0019) and the setpoint is lower than the operating threshold
(setpoint < C0019)
3. Set the operating threshold under C0019.
)
Note!
If DC−injection braking is operated too long with high brake current or brake
voltage, the connected motor can be overheated!
Setting tips
ƒ Use C0019 to set a dead band in the setpoint. If DC−injection braking is not to be
active here, set C0106 = 0.00 s.
ƒ C0019 can be referred to a process variable.