Eaton EMS2 SWD Series, Manual

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2 Motor starter – overview
2.3 Motor starter with safety function (DOS, ROS)
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EMS2…-SWD Electronic motor starter 10/19 MN120008EN www.eaton.com
2.3 Motor starter with safety function (DOS, ROS)
The devices to actuate motors described in this Section must not be
operated in potentially explosive Ex e increased safety (ATEX) areas.
Table 4: DOS (direct starter) and ROS (reversing starter) versions
Notes
Type Minimum
current Rated operational current I
e
AC51
EN 60947-4-3 AC53a
EN 60947-4-2
DOL starters
EMS2-DOS-T-3-SWD 0.18 A 3 A 3 A
EMS2-DOS-T-9-SWD 1.5 A 9 A 7 A
Reversing starters
EMS2-ROS-T-3-SWD 0.18 A 3 A 3 A
EMS2-ROS-T-9-SWD 1.5 A 9 A 7 A
￫
Note that the permissible continuous current for devices with a
rated operational current I
e
of 9 A depends on the type of
mounting and the ambient temperature, ￫ section 2.5, “Lay-
out of devices with I
e
= 9 A”, page 15.
￫
Currents under the minimum current specified in the table 4 will
not be detected by the motor protection.
It is therefore not permissible to operate the motor under this
value – especially in applications which fall under the remit of
the ATEX guideline.
The motor starter itself also works if the current is under this
minimum value. This state is displayed by the flashing of both
LEDs
PWR and ERR .