Elettronica Santerno SINUS K, User Manual

Page: 170 / 191

INSTALLATION
SINUS K
INSTRUCTIONS
170/ 191
13.6.9. W
IRING THE
E
NCODER
C
ABLE
Use a screened cable to connect the encoder to the board. Screening should be grounded to both ends of the
cable. Use the special clamp to fasten the encoder wire and ground the cable screening to the inverter.
Figure 85: Wiring the encoder cable.
Do not stretch the encoder wire along with the motor supply cable.
Connect the encoder directly to the inverter using a cable with no intermediate devices, such as terminals or
return connectors.
Use a model of encoder suitable for your application (as for connection length and max. rev number).
Preferably use encoder models with complementary LINE-DRIVER or PUSH-PULL outputs. Non-complementary
PUSH-PULL, PNP or NPN open-collector outputs offer a lower immunity to noise.
The encoder electrical noise occurs as difficult speed adjustment or uneven operation of the inverter; in the worst
cases, it can lead to the inverter stop due to overcurrent conditions.