2 Motor starter – overview
2.2 Motor starter without safety function (DO, RO)
10
EMS2…-SWD Electronic motor starter
10/19 MN120008EN
www.eaton.com
2.2 Motor starter without safety function (DO, RO)
The devices to actuate motors described in this Section must not be oper-
ated in potentially explosive Ex e increased safety (ATEX) areas.
Table 2: DO (direct starter) and RO (reversing starter) versions
Notes
Type
Minimum
current
Rated operational current I
e
AC51
EN 60947-4-3
AC53a
EN 60947-4-2
Direct starters
EMS2-DO-T-3-SWD
0.18 A
3 A
3 A
EMS2-DO-T-9-SWD
1.5 A
9 A
7 A
Reversing starters
EMS2-RO-T-3-SWD
0.18 A
3 A
3 A
EMS2-RO-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,
out of devices with Ie = 9 A”, page 15.
→
Currents under the minimum current specified in table 2 will not
be detected by the motor protection. The motor must not be
operated under this value.
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
.