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Duplomatic MS
S.p.A
. ▪
EDM-M*/30 Start-
up Manual ▪
89251/218
ETM ▪
Jun 2018
Installation instructions
This module is designed for installation in a shielded EMC housing (control cabinet).
All cables which lead outside must be screened; complete screening is required. It is also
necessary to avoid strong electro-magnetic interference sources being installed nearby when
using our open and closed loop control modules.
Typical installation location:
24 V control signal area (close to PLC)
The devices must be arranged in the control cabinet so that the power section and the signal
section are separate from each other.
Experience shows that the installation place close to the PLC (24 V area) is most suitable. All
digital and analogue inputs and outputs are fitted with filters and surge absorbers in the
device.
The card must be installed and wired according to the EMC 2014/30/EU directive rules.
If other consumers are operated with the same power supply, a star-shaped ground wiring
scheme is recommended.
The following points must be observed when wiring:
•
0V DC of the power supply must be connected to the GND on electrical cabinet.
•
The signal cables must be laid separately from power cables.
•
Analogue signal cables
must be screened
.
•
All other cables must be screened if there are powerful interference sources
(frequency converters, power contactors) and cable lengths > 3 m. Inexpensive SMD
ferrites can be used with high-frequency radiation.
•
The screening should be connected to PE (PE terminal) as close to the module as
possible. Local requirements for screening must always be taken into account. The
screening should be connected to at both ends. Equipotential bonding must be
provided where there are differences between the connected electrical components.
•
If having longer lengths of cable (> 30 m), the diameters and screening measures
should be checked by specialists and if necessary please consult the manufacturer (e. g.
for possible interference, noise sources and voltage drop). However, the sizing must
ensure a voltage to the coil of not less than 90% of its nominal voltage.
•
the value of the power supply voltage on the card must not be lower than the rated
working voltage of the solenoid to be controlled
.
•
Provide a low-resistance connection between PE and the mounting rail. Transient
interference is transmitted from the module directly to the mounting rail and from
there to the local earth.
It is recommended using a regulated power supply (linear or switching mode) for card supply
and for the sensors.
