Kübler SMC1.3, Safety Manual

Page: 209 / 235

R60047.0002 - Index 2 EN – page 89 / 115
13 Response times
13.1 Response Time of the Relay Output
Hardware delay of the relay itself: 25 ms (max.)
With normal monitoring of overspeed, underspeed or frequency band:
(with frequency band please choose the lower frequency, since this produces more delay)
2 x Sampling Time + 25 ms
e.g. f = 10 kHz, Sampling Time = 1 ms
for frequencies > 1 / Sampling Time
10 kHz > 1 kHz -> delay = 27 ms
2 x 1/fre 25 ms
e.g. f = 100 Hz, Sampling Time = 1 ms
for frequencies < 1 / Sampling Time
100 Hz < 1 kHz -> delay = 45 ms
With normal monitoring of standstill:
2 x Wait Time + Standstill Time + 25 ms
e. g. Standstill Time = 0 ms, Wait Time = 100
ms
for frequency = 0
delay = 225 ms
These response times are based on a step function.
For this time, the parameter “Filter” is not regarded. If Filter is activated,
Sampling Time or 1/frequency has to be multiplied by the factor x 5. (5 = a final
value about 100% is reached, 3= a final value about 95% is reached).
With a system error (critical internal error) the response time will be:
85 ms + 25 ms =110 ms.
13.2 Response Time of the Analog Output
Hardware delay of the analog output itself: 1 ms
With normal monitoring of overspeed, underspeed or frequency band:
(with frequency band please choose the lower frequency, since this produces more delay)
2 x Sampling Time + 1 ms
e.g. f = 10 kHz, Sampling Time = 1 ms
for frequencies > 1 / Sampling Time
10 kHz > 1 kHz -> delay = 3 ms
2 x 1/fre 1 ms
e.g. f = 100 Hz, Sampling Time = 1 ms
for frequencies < 1 / Sampling Time
100Hz < 1 kHz -> delay = 21 ms
With normal monitoring of standstill:
2 x Wait Time + Standstill Time + 1 ms
e.g. Standstill Time = 0, Wait Time = 100 m s
for frequency = 0
delay = 201 ms
These response times are based on a step function.
For this time, the parameter “Filter” is not regarded. If Filter is activated,
Sampling Time or 1/frequency has to be multiplied by the factor x 5. (5 = a final
value about 100% is reached, 3= a final value about 95% is reached).
With a system error (critical internal error) the response time will be:
85 ms + 1 ms =86 ms