Functional Extension:
1. Measurement and display of the distance between the limit or reference switch and the TP encoder
The distance is measured during the reference movement as the respective switches and TP sources are passed and is displayed in a parameter in units:
- 0x500A:88 : Dist. Ref Mark and Ref TP
The distance is calculated in the homing modes listed below
| Mode | Distance |
|---|
| CcwLimitSwitchCwTP [1] | ActPos(TP) - ActPos(LimitSwitch_High_Low) |
| CwLimitSwitchCcwTP [2] | ActPos(TP) - ActPos(LimitSwitch_High_Low) |
| CwRpCcwRnTP [3] | ActPos(TP) - ActPos(Abswitch_High_Low) |
| CcwRpCwRnTP [5] | ActPos(TP) - ActPos(Abswitch_High_Low) |
2. Zero-pulse offset
The TP event, which is derived from the resolver/encoder zero position, can be shifted separately for motor and load encoders between -179°..0°..+179°:
- 0x2D00 /10 - Zero-pulse offset for motor encoder
- 0x2D00 /11 - Zero-pulse offset for load encoder
Zero-pulse offset is supported for the following encoder types:
- Resolver
- Hyperface encoders
Included in the following products:
i950 B Servo Inverter FW: V02.00.03 and later
Application:
If the reference signal and the resolver/encoder zero position are only a few degrees apart (due to the mechanical mounting of the switches and the motor), jitter can prevent the reference positions from consistently being at the same location.
This implemented offset shift increases the distance between the two reference signals, ensuring that they are reliably detected in the correct order.
This function was also implemented in the 8400 TL. This functional enhancement facilitates migration.
[Automatic Translation]
