Product description
Page 31
3.2
Power supply
3.2.1
Single-phase AC supply with active PFC
The item servo positioning controller C 1-Series fulfils the following demands on a servo positioning controller with active PFC
stage (with the C 1-08 being an exception):
Fulfilment of current standards regarding mains harmonics (EN 61000-3-2)
cos
ϕ
° > 0.97 at nominal operation (at rated output power of the PFC stage)
Sinusoidal mains current, harmonic distortion < 4 % (at rated output power of the PFC stage)
Controlled average value of DC bus voltage of 380 VDC
Insensitive in the case of weak mains and short mains interruptions. In such cases the device maintains stable (within the
physical possibilities) without malfunctions
Wide input voltage range, rated voltage 230 VAC
Frequency range nominal 50-60 Hz
±
10 %
Electrical impulse load capacity for possible combination of several servo positioning controllers. The item servo positioning
controller C 1-Series allows dynamic conversion in both directions between motor and generator operation without dead times
No parameterisation by user necessary
3.2.1.1
Behaviour during switch-on
As soon as the item servo positioning controller C 1-Series is supplied with the input voltage, the DC bus is charged (< 1 s)
using the brake resistor as a precharging resistor, the DC link relay deactivated. During this the PFC remains inactive
After precharging of the DC bus the relay is energized and the DC bus is coupled hard to the mains power without the
precharging resistor. Subsequently, the PFC stage is activated and the DC bus is boosted to the full DC bus voltage
If the DC bus voltage after precharging is too small, because the input mains voltage is below the PFC operation input voltage
range, the PFC stage remains inactive and an error message on the seven segment display is shown
If the item servo positioning controller C 1-Series is supplied with less than the nominal voltage of 230 VAC, the actual DC bus
voltage after the precharge is used to compute a power derating for the PFC stage (see
chapter 4.3 Supply [X9]
page 40
and
