5 Application examples
5.2 Reversing starter 24 V DC with safety function (dual-channel) (cat. 3, SIL 3, PL e)
36
EMS2… Electronic motor starter
10/19 MN034003EN
www.eaton.com
5.2 Reversing starter 24 V DC with safety function (dual-channel) (cat. 3, SIL 3, PL e)
Consider these two examples.
Figure 20: Reversing starter with safety function (dual-channel)
In this example (shown in Figure 20), the EMS2-ROS… motor starter is used
in combination with an ESR5 series safety relay. The mutual reference point
of the control inputs (terminal
E
) and the control commands
L
and
R
are
switched via the 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.
L1
L2
L3
N
PE
GND
GND
ESR5-NO-31-24 V AC-DC
24 V DC
F1
3/
L2
1/
L1
A
2
A
1
E
R
L
5/
L3
24 V DC
2/
T1
4/
T2
6/
T3
95 96 98
M
3 ~
W1
V1
U1
MAN
RES
AUT
S2
S2
A1
S11 S12 S21 S22
13 23 33 41
A2
S33 S34
14 24 34 42
S3
EMS2-ROS-…
