Smart brake
Functional description¶
The TGZ servo amplifier is equipped with an enhanced static motor brake control function called Smart Brake. This function, among other benefits, reduces the power consumption of the static brake after it has been released (permanently released state). The reduction in consumption is achieved by lowering the brake holding voltage/current (VHOLD, IHOLD). Two static brake control modes are available.
This is voltage control:
and current control.
Smart brake feature availability
This feature is currently available only on selected TGZ servo drives, specifically the TGZ-S-560-14/30-UNIR-R model. It will be implemented into additional TGZ models over time. Other models are equipped with a Standard brake function.
Configuration and control¶
The user can configure all required parameters in the program TGZ GUI.
The parameter set is available in the Drive section.
For each controlled axis, user can select either voltage control voltage control or current control current control of the brake via the parameter D-Brake_mode.
Each mode has different operating parameters.
Parameters¶
In the voltage mode of brake control, the following parameters can be set:
| No. | Name | Designation in TGZ GUI | Unit | Range | Description |
|---|---|---|---|---|---|
| 1 | VEXC | D-BR_L2H_voltage |
V | 0~VCCBR | Excitation voltage (pull-in voltage) |
| 2 | VHOLD | D-BR_H_voltage |
V | 0~VCCBR | Holding voltage |
| 3 | τEXC | D-BR_L2H_T_time |
10 ms | 0~1000 | Excitation time (duration for which the brake is supplied with VEXC) 0~10 s |
Maximum brake supply voltage
VABSMAX can be set in the range 0~50 V. Electronically, the brake-switching circuit is limited to 30 VDC. A higher supply voltage applied to the VCC_BR power pin can irreversibly damage the circuit!
In the current mode of brake control, the following parameters can be set:
| No. | Name | Designation in TGZ GUI | Unit | Range | Description |
|---|---|---|---|---|---|
| 1 | IEXC | D-BR_L2H_voltage |
100 mA | 0~30 | Excitation current (pull-in current) 0~3 A |
| 2 | IHOLD | D-BR_H_voltage |
100 mA | 0~30 | Holding current 0~3 A |
| 3 | τEXC | D-BR_L2H_T_time |
10 ms | 0~1000 | Excitation time (duration for which the brake coil carries current IEXC) 0~10 s |