Datasheet

Product Data Sheet RL48-19/12/2
02/01/2019 page 5 of 11
3.2 Electrical Interface - Output
Tacho type /2 (open collector)
Features Note Values
Tacho operating voltage U
BS
<= 28 V
Tacho signal Low U
S low
I sink: 2 mA <= 0,4 V
Tacho signal High U
S high
I source: 0 mA <=28 V
Maximum sink current I
sink
<= 4 mA
Maximum source current 0 mA
External resistor
External resistor Ra from UBS to US required. All voltages measured
to GND.
Tacho frequency (2 x n) / 60 146 Hz
Tacho isolated from motor No
Slew rate => 0,5 V/us
n = revolutions per minute (1/min)
3.3 Electrical Features
Electronic function None
Reversed polarity protection Rectifying diode
Max. residual current at U
N
I
F
<= 500 uA
Locked rotor protection Auto restart
Locked rotor current at U
N
I
block
approx. 910 mA
Clock signal at locked rotor t
3
/ t
4
typical: 0,16 s / 1,0 s