Eaton EMS Series User Manual

2 Engineering
2.3 Safety shutdown with long lifespan
Elektronischer Motorstarter EMS/Electronic Motor Starter EMS 04/15 MN03407009Z-DE/EN www.eaton.com 45
2.2.2 Dual-channel switching and control current path emergency stop (reduced lifespan)
Figure 5: Dual-channel main and control current path emergency stop (reduced lifespan)
S2 = Emergency stop, S3 = Reset
Emergency stop (dual-channel) – (as per cat. 3, SIL 3, PL e): EMS-ROS-…
with higher-level safety relay combination
2.3 Safety shutdown with long lifespan
In applications in which the safety shutdown is a normal operating state
(such as is in the case of protective door and two-hand control applications),
a circuit like the ones shown in ￫ Section 2.3.1, “Main and control current
path emergency stop (single-channel)“ and ￫ Section 2.3.2, “Main and con-
trol current path emergency stop (dual-channel)“ must be used. In this kind
of configuration, the supply voltage is not switched. Instead, the actuating
circuit is switched.
Both single-channel and dual-channel configurations can be implemented.
For this purpose, the input wiring for the clockwise/anticlockwise activation
terminal and the corresponding ground must be routed through the safety
relay as well.
L1
L2
L3
N
PE
GND
EMS-ROS-...
ESR5-NO-21-24 V AC-DC
24 V DC
GND
24 V DC
F1
3/
L2
1/
L1
A
2
A
1
E R L
5/
L3
2/
T1
4/
T2
6/
T3
95 96 98
M
3 ~
PE
W1V1U1
MAN RES AUT
S2
S2
A1 S11 S12 S21 S22
13 23 31
A2 S33 S34
14 24 32
S3

Eaton EMS Series Specifications

General

Model	EMS Series
Category	Controller
Manufacturer	Eaton
Operating Temperature Range	-20° to +70°C
Certifications	UL, CE, RoHS