kfd2-sr2-2.w.sm  暂停控制器 是零转速/暂停控制器它能接收输入频率脉冲信号并在频率低于一个设定值时触发一个输出信号
general specifications signal type digital input supply connection terminals 14+, 15- rated voltage 20 ... 30 v dc power consumption max. 1.5 w input connection input i: terminals 1+, 2+, 3- ;input ii: terminals 4+, 5+, 6- rated values acc. to en 60947-5-6 (namur) open circuit voltage/short-circuit current approx. 8 v dc / approx. 8 ma switching point/switching hysteresis 1.2 ... 2.1 ma / approx. 0.2 ma line fault detection not available control input sensor power supply approx. 8.2 v, impedance 1.2 kω pulse duration > 200 μs for standstill monitoring,> 250 μs for rotation direction detecion output connection output i: terminals 7, 8, 9 ;output ii: terminals 10, 11, 12 relay 2 changeover contacts contact loading 253 v ac/2 a/cos φ > 0.7; 126.5 v ac/4 a/cos φ > 0.7; 40 v dc/2 a resistive load minimum switch current 2 ma / 24 v dc energized/de-energized delay approx. 20 ms / approx. 20 ms mechanical life 107 switching cycles trip value for standstill monitoring:0.1 hz; 0.5 hz; 2 hz; 10 hzadjustable via dip switch (s1 and s2) transfer characteristics accuracy 5 % (s3 = i), 30 % (s3 = ii) start-up override 5 seconds or 20 seconds, programmable frequency range ≤ 2 khz rotation direction detection 90° phase difference between pulse input signal 1 and 2, overlapping ≥ 125 μs directive conformity electromagnetic compatibility directive 2014/30/eu en 61326-1:2013 (industrial locaiions) low voltage directive 2014/35/eu en 61010-1:2010 conformity electromagnetic compatibility ne 21:2006 degree of protection iec 60529:2001 ambient conditions ambient temperature -20 ... 60 °c (-4 ... 140 °f) mechanical specifications degree of protection ip20 mass approx. 150 g dimensions 20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type b2 mounting on 35 mm din mounting rail acc. to en 60715:2001