### Date and Time

must to be programmed with a new CU PCB

after NVRAM erase (battery off)

(is not part of a 'CU Complete' backup file)

### Mains data

#### U_mains_nominal [V]

available values = 380 / 400 / 440 / 460 / 480 V

default value = 400V

# Note

(for 415V select 400V)

#### Ri_mains [mOhms]

range of mains resistance = 0...500 mOhms

default values: 50kW = 200 mOhms

65kW = 100 mOhms

80kW = 100 mOhms

Note

!! It is important to select (U) and type in [Ri] the true values. !!

!! The calculation of the kV_control for the duty cycle to drive the IGBT's is based on that. !!

Power reduction table: | 380V | 400V | 440V | 460V | 480V
Ri for Optimus 50kW single converter | < | 300 m W | 50 kW | 50 kW | 50 kW | 50 kW | 50 kW
350 m W | 40 kW | 50 kW | 50 kW | 50 kW | 50 kW
400 m W | 30 kW | 40 kW | 50 kW | 50 kW | 50 kW
450 m W | 30 kW | 30 kW | 40 kW | 40 kW | 40 kW
500 m W | 30 kW | 30 kW | 30 kW | 30 kW | 30 kW
Ri for Optimus 56/80 kW double converter (100 kW generator not applicable) | < | 150 m W | 100 kW | 100 kW | 100 kW | 100 kW | 100 kW
200 m W | 80 kW | 80 kW | 100 kW | 100 kW | 100 kW
250 m W | 65 kW | 65 kW | 80 kW | 80 kW | 80 kW
300 m W | 50 kW | 65 kW | 65 kW | 65 kW | 80 kW
350 m W | 40 kW | 50 kW | 50 kW | 50 kW | 65 kW
400 m W | 30 kW | 40 kW | 40 kW | 40 kW | 50 kW
450 m W | 30 kW | 30 kW | 40 kW | 40 kW | 40 kW
500 m W | 30 kW | 30 kW | 30 kW | 30 kW | 30 kW

## Note

- The max kW limit and with it the max mA is programmed in the function key EZ139 D38 (depending on the customer order, see STAMMKARTE on frontal kV power unit).
- If the generator power has been reduced to e.g. 30kW due to a mains resistance of 500mOhms the tube must be re-adapted with the lower mains resistance value to get the full performance at the better mains conditions.