Technical Specifications
Item no. 10403039, Revision 05
20 ( 40 )
6.5
Speed sensor (digital differential magneto resistor)
Trouble-free evaluation requires good wiring.
Ü
Use twisted and shielded cables.
Ü
Connect the HF spindle based on the connection example shown below.
DFP = digital differential magneto
resistor
S = signal
Note: Resistor (Rx).
If the resistor (Rx*) is already integrated in the evaluation unit (FC):
u
Only connect signal and ground.
Supply voltage (U)
Rx (*)
Signal (**)
+ 8 V
220 Ω
1000 mV
+ 8 V
450 Ω
2000 mV
+ 12 V
220 Ω
1000 mV
+ 12 V
680 Ω
3000 mV
+ 15 V
220 Ω
1000 mV
+ 15 V
680 Ω
3000 mV
+ 24 V
220 Ω
1000 mV
+ 24 V
680 Ω
3000 mV
*Unnecessary if a resistor is integrated in the evaluation unit (frequency converter, etc.).
**Values may differ by ±20% depending on the measuring method.
6.6
ESD protection
Insulated routing
The ESD protection is produced by establishing an electrically conductive con-
nection between the rotating shaft of the HF spindle and a separate PE pro-
tective conductor, which is routed to the motor casing with insulation.
q
Depending on the operating time, the electrical resistance of this sliding
contact is <1 kΩ.
q
The wear and the function of the ESD protection can be monitored via a
second sliding contact.
