Siemens SIMOVERT FC Series Operating Instructions Manual page 11

Start-up
4-2
If another time constant is required other than specified in table 1, then
an additional smoothing capacitor can be calculated according to the
following formula.
τ
⎛ ⎞
new
= ⎜ ⎜ − ⎟ ⎟
1
C C
2 τ 1
⎝ ⎠
old
Solder pins are available for additional smoothing with capacitor C2.
Rated input Time constant
voltage
approx. 400 µs at 10 V
60 V
approx. 470 µs at 60 V
approx. 540 µs at 60 V
150 V
approx. 460 µs at 150 V
approx. 530 µs at 150 V
300 V
approx. 470 µs at 300 V
Table 1 Resistor-dependent smoothing time constants
Load resistors
approx. 50 kΩ
approx. 100 kΩ
approx. 200 kΩ
6SE7087-6CX84-3DF0
Analog Tacho-Interface SIMOVERT MASTERDRIVES
05.1999
Siemens AG