Data Sheet

Product Data Sheet 6314/2TDHHP
02/04/2019 page 6 of 11
3.3 Electrical Interface - Output
Tacho type
/2 (open collector)
Features
Note
Values
Tacho operating voltage
U
BS
<= 60 V
Tacho signal Low
U
S low
I sink: 2 mA
<= 0,4 V
Tacho signal High
U
S high
I source: 0 mA
<=60 V
Maximum sink current
I
sink
<= 20 mA
External resistor
External resistor Ra from UBS to US required. All voltages measured
to GND.
Tacho frequency
(6 x n) / 60
Tacho isolated from motor
No
Slew rate
=> 0,5 V/us
n = revolutions per minute (1/min)
Please note:
At zero speed the tacho signal is at a static HIGH. It will be also HIGH when the fan is still spinning, but the speed
control signal is set to zero speed already.
The tacho signal is only activated after the start-up is completed.
3.4 Electrical Features
Electronic function
Speed-Controlled
Reversed polarity protection
P-CH FET
Max. residual current at U
N
I
F
<= 5 mA