Technosoft 2022
25
iPOS4803-SY Multi Axis System, EtherCAT Technical Reference
2. The iPOS4803-SY are equipped with a feature that detects breakage of Hall wires and/or of
incremental/absolute encoder wires.
3. The length of the cables must be up to 30m, reducing the exposure to voltage surges in industrial
environment.
CAUTION!
Digital Hall cable shield must be connected to system GND to avoid
disturbances / noise induced by nearby cables.
3.8.10.1 General recommendations for feedback wiring
a) Always connect both positive and negative signals when the position sensor is differential and provides them.
Use one twisted pair for each differential group of signals as follows: A1+/DAT1+ with A1-/DAT1-,
B1+/CLK1+ with B1-/CLK1-, Z1+ with Z1-, A2+/DAT2+ with A2-/DAT2- and B2+/CLK2+ with B2-/CLK2-.
Use another twisted pair for the 5V supply and GND.
b) Always use shielded cables to avoid capacitive-coupled noise when using single-ended encoders or Hall
sensors with cable lengths over 1 meter. Connect the cable shield to the GND, at both ends.
a) If the +5V supply output is used by another device (like for example an encoder) and the connection cable is
longer than 5 meters, add a decoupling capacitor near the supplied device, between the +5V and GND lines.
The capacitor value can be 1...10 μF, rated at 6.
3V.
3.9 Power Supply Connection
3.9.1 Supply Connection
Figure 19
Supply connection for iPOS4803-SY
Remarks:
1. The +V
log
inputs can be supplied from the same power source as long as its output voltage is 6 to 48V DC
from a SELV/ PELV power supply.
2. J9 connector is internally connected to all axis +V
log
inputs and GND.
3. An external electrolytic capacitor may be added bV
mot
and GND, to help reduce over-voltage during
load braking/ reversals. See paragraph 3.9.1.1 for details.
3.9.1.1
Recommendations for Supply Wiring
a) The iPOS4803-SY always requires two supply voltages: +V
log
and +V
mot
.
b) Use short, thick wires between the iPOS4803-SY and the motor power supply. Connect power supply wires
to all the indicated pins.
