Vacon NX User Manual - page 11
Installation
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3
3.2
OPT-AR jumper settings
NOTE! With +5 V supply voltage, voltage drop with long cabling (about 60 m with 0.5 mm
2
wire
section) can become too big for reliable operation. Using +12 V or +15 V encoders is recommended in
these cases.
Jumper X1 selects encoder supply voltage on the OPT-AR board, see jumper settings below:
5V (Default)
Left(top-view)
12V
middle(top-view)
15V
right(top-view)
NOTE! Be careful with the jumper setting, wrong voltage may damage the encoder.
Jumper X4 selects grounding mode for cable shield of encoder on the OPT-AR board, see jumper
settings below:
Left(top-view)
(default, directly to
ground)
Right(top-view)
(Through RC-circuit to
ground)
Without X4
(floating)
3.3
I/O terminals on OPT-AR, encoder terminal X6
Terminal
Technical data
1
COS-
Same as SIN-
2
N.C.
3
R+
1Vpp (±0,5V); impedance 120
Ω
; Max. input 350
kHz,
Reference mark signal
4
R-
5
SIN+
1Vpp (±0,5V); impedance 120
Ω
; Max. input 350
kHz,
6
SIN-
7
GND
Input ground
8
COS+
Same as SIN+
9
Encoder voltage
Selectable encoder voltages: 5V, 12V and 15V
Max. current consumption 300mA
10
|
15
N.C
Shield
NOTE! Analog Sin/Cos signals deserve some more precautions for noise immunity than pulse
encoders. Use of shielded pair cables is recommended. Use one pair for SIN+/SIN- , one pair for
COS+/COS- and another pair for R+/R- signals.