Owner's manual
Operating Instructions SWTD-1000  DYNALCO 
  2// 
3. Specifications 
3.1 General 
SWTD-1000 
Lowest measuring range  0 . . . 1.000 Hz 
Highest measuring range  0 . . . 35.00 kHz 
Minimum Measuring time 
(Fixtime) 
Selectable values:  2 / 5 / 10 / 20 / 50 / 100 / 200 / 500ms 
  1 / 2 / 5 Seconds. 
Effective Measuring time  Is based on the minimum measuring time (Fixtime) and the measured 
frequency. 
•  Input frequency period < Fixtime 
Input
frequency
End of Fixtime
Input period
Fixtime
time
typically:  t
effective
  = Fixtime 
max:  t
max
  = 2 x Fixtime 
•  Input frequency period > Fixtime 
Input
frequency
End of Fixtime Ensuing edge
Period of input signal
Fixtime time
max:  t
max  
= 2 x input frequency period 
•  In the event of sensor signal failure: 
 t
effective
  = Fixtime + (2 x last input frequency period)   
Resolution 0.05 % 
Power supply range  10...36 VDC 
Power consumption  10 V :  2.3 W 
24 V :  2.6 W 
36 V :  3.0 W 
PSU failure bridging  16 V :   4 ms 
24 V :  25 ms 
36 V :  75 ms 
Isolation Galvanic isolation between: 
•  Power supply, 
•  Sensor input incl. sensor supply, Binary input, Serial interface 
• Analog output 
• Relay output 
• Open collector output 
Isolation voltage  700 VDC / 500VAC 










