203Bh I2t Parameters
Function
This object contains the parameters for the I2t monitoring.
The I2t monitoring is activated when a value greater than 0 is entered in 203Bh:01h and 203Bh:02h (see " I2t motor overload protection").
I2t can only be use for closed loop mode with a single exception: If I2t is activated in open loop mode, the current is limited to the set nominal current even when the set maximum current is greater. This feature was implemented for safety reasons, so that it is also possible to switch out of closed loop mode and into open loop mode with a very high short-time maximum current without damaging the motor.
Object description
| Index | 203Bh |
| Object Name | I2t Parameters |
| Object Code | ARRAY |
| Data type | UNSIGNED32 |
| Saveable | yes, category: tuning |
| Firmware Version | FIR-v1426 |
| Change History |
Firmware Version FIR-v1512: Entry "Savable" modified from "No" to "yes, category: application". Firmware Version FIR-v1614: Entry "Saveable" modified from "yes, category: application" to "yes, category: tuning". |
Value description
| Sub-index | 00h |
| Name | Highest Sub-index Supported |
| Data type | UNSIGNED8 |
| Access | Read only |
| PDO Mapping | No |
| Admissible Values | |
| Specified Value | 07h |
| Sub-index | 01h |
| Name | Nominal Current |
| Data type | UNSIGNED32 |
| Access | Read/write |
| PDO Mapping | No |
| Admissible Values | |
| Specified Value | 00000000h |
| Sub-index | 02h |
| Name | Maximum Duration Of Peak Current |
| Data type | UNSIGNED32 |
| Access | Read/write |
| PDO Mapping | No |
| Admissible Values | |
| Specified Value | 00000000h |
| Sub-index | 03h |
| Name | Threshold |
| Data type | UNSIGNED32 |
| Access | Read/write |
| PDO Mapping | No |
| Admissible Values | |
| Specified Value | 00000000h |
| Sub-index | 04h |
| Name | CalcValue |
| Data type | UNSIGNED32 |
| Access | Read/write |
| PDO Mapping | No |
| Admissible Values | |
| Specified Value | 00000000h |
| Sub-index | 05h |
| Name | LimitedCurrent |
| Data type | UNSIGNED32 |
| Access | Read/write |
| PDO Mapping | No |
| Admissible Values | |
| Specified Value | 00000000h |
| Sub-index | 06h |
| Name | Status |
| Data type | UNSIGNED32 |
| Access | Read/write |
| PDO Mapping | No |
| Admissible Values | |
| Specified Value | 00000000h |
| Sub-index | 07h |
| Name | ActualResistance |
| Data type | UNSIGNED32 |
| Access | Read/write |
| PDO Mapping | No |
| Admissible Values | |
| Specified Value | 00000000h |
Description
The subentries are divided into two groups: sub-index 01h and 02h holding parameter for controlling, sub-index 03h to 06h are status values. The functions are as follows:
- 01h: Specifies the nominal current as root mean square (RMS) in mA, must be smaller than the peak current 2031h, otherwise monitoring will not be activated.
- 02h: Specifies the maximum time period of the peak current in ms.
- 03h: Threshold, specifies the limit in mA, from which is determined whether switching is to the maximum current or nominal current.
- 04h: CalcValue, specifies the calculated value that is compared to the threshold in order to set the current.
- 05h: LimitedCurrent, shows the actual current value as root mean square (RMS) that was set by I2t.
- 06h: Actual status. If the subentry value is "0", I2t is deactivated; if the value is "1", I2t is activated