1 Electronic motor starter EMS
1.2 Overview of the devices EMS-…
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Elektronischer Motorstarter EMS/Electronic Motor Starter EMS
04/15 MN03407009Z-DE/EN
www.eaton.com
1.2 Overview of the devices EMS-…
EMS electronic motor starters are designed to drive and protect three-phase
asynchronous motors under normal operating conditions, as well as to
switch them off when necessary due to safety reasons.
Accordingly, EMS motor starters combine the following functions:
•
Anticlockwise motor rotation,
•
Clockwise motor rotation,
•
Motor protection (overload protection, plus phase failure and phase
imbalance detection)
•
Category 3 emergency stop contactor
The starters‘ internal interlock circuit and load wiring keep external wiring
down to a minimum. Finally, the EMS series of products includes various
device versions with different functions, as shown in the following section.
1.3 Device series
There are a number of different EMS electronic motor starter versions avail-
able.
Table 1:
EMS-...series overview
Device type
Function
Current Range
Supply voltage
(control voltage)
EMS-DO-T-2,4-24VDC
DOL starter
with motor protection
0.18 - 2.4 A (AC-51)
0.18 - 2.4 A (AC-53a)
24 V DC
EMS-DO-T-9-24VDC
DOL starter
with motor protection
1.5 - 9 A (AC-51)
1.5 - 6.5 A (AC-53a)
24 V DC
EMS-RO-T-2,4-24VDC
Reversing starter
(anticlockwise motor operation,
clockwise motor operation) with
motor protection
0.18 - 2.4 A (AC-51)
0.18 - 2.4 A (AC-53a)
24 V DC
EMS-RO-T-9-24VDC
Reversing starter
(anticlockwise motor operation,
clockwise motor operation) with
motor protection
1.5 - 9 A (AC-51)
1.5 - 6.5 A (AC-53a)
24 V DC
EMS-DOS-T-2,4-24VDC
DOL starter
with motor protection and emer-
gency stop contactor
0.18 - 2.4 A (AC-51)
0.18 - 2.4 A (AC-53a)
24 V DC
EMS-DOS-T-9-24VDC
DOL starter
with motor protection and emer-
gency stop contactor
1.5 - 9 A (AC-51)
1.5 - 6.5 A (AC-53a)
24 V DC
EMS-ROS-T-2,4-24VDC
Reversing starter
(anticlockwise motor operation,
clockwise motor operation) with
motor protection and emergency
stop contactor
0.18 - 2.4 A (AC-51)
0.18 - 2.4 A (AC-53a)
24 V DC
EMS-ROS-T-9-24VDC
Reversing starter
(anticlockwise motor operation,
clockwise motor operation) with
motor protection and emergency
stop contactor
1.5 - 9 A (AC-51)
1.5 - 6.5 A (AC-53a)
24 V DC
