Nord Drivesystems NORDAC FLEX SK 200E Series User Manual page 66

NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
Information
The reaction time of a digital signal is approx. 4-5 ms and consists of the following:
For digital inputs DIN2 and DIN3 there is a parallel channel which relays the signal pulses between 250 Hz and
205 kHz directly to the processor, and therefore makes it possible for a rotary encoder to be evaluated.
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Information
All control cables (including PTC thermistors) must be routed separately from power and motor cables to prevent
interference in the device.
If the cables are routed in parallel, keep a minimum distance of 20 cm from cables which carry a voltage of >
60 V. The minimum distance may be reduced by shielding live cables or by using grounded metal separator
within the cable ducts.
Alternatively: Use of a hybrid cable with shielded control lines.
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Reaction time of digital inputs
Scan time
Signal stability check
Internal processing
1 ms
3 ms
< 1 ms
Cable routing
BU 0200 en-US-3118