COSMOS 302X series servo drives / inverters
Installation, use and maintenance manual - EN
Ver. 1.01
29
5.3.3.2 24V digital inputs
The servo-drive / inverter is equipped with 4 general purpose 24V digital inputs. These inputs are typically used
to acquire data from sensors with digital output, which are very common in industry (such as photocells, limit
switches, etc.).
The following picture shows an example of how a sensor is connected; in most applications, the wiring can be
made by means of an ordinary unshielded cable.
However, if the operating environment is affected by significant electrical noise or the distances to be crossed
are significant, the use of a shielded cable may be necessary. In this case, the shield must be connected to
earth on both sides, preferably with low-impedance connection, such as a metal cam; the shield is totally inef-
fective if it is left floating.
Signal quality may be further improved by keeping the cables as far as possible from noise sources, such as
power cables, inverters, power supplies, relays, etc.
Check the sensor polarity before connection; inverted polarity may damage the sensor and/
or servo-drive.
