Eaton EMS2 Series Manual page 41

5.2 Reversing starter 24 V DC with safety function (dual-channel) (cat. 3, SIL 3, PL e)
24 V DC
F1
1/ 3/ 5/
L1 L2 L3
EMS2-ROS-...
2/ 4/ 6/
T1 T2 T3
95 96 98
U1 V1 W1
M

3 ~
Figure 21: Reversing starter with safety function (dual-channel)
In this example (shown in figure 21), the EMS2-ROS... motor starter is used
in combination with an ESR5 series safety relay. The preset for the control
commands for the operating direction takes place directly at 24 V DC on the
L or R terminal.
In contrast to the previous example, in the case of a controlled stop, the
supply voltage on the terminals A1 and A2 is switched off by the safety relay,
which causes a reduction in the lifespan of the motor starter.
Please also note the information about the lifespan of devices on Page 33.
EMS2... Electronic motor starter 10/19 MN034003EN www.eaton.com
A A E R L
2 1
24 V DC
5 Application examples
S2
S2
A1 S11 S12 S21 S22
ESR5-NO-21-24 V AC-DC
A2 S33 S34
S3
13 23 31
14 24 32
37