SICK ReLy EMSS3

2 Safety information
2.1 General safety notes
DANGER
If t
he safety component is integrated incorrectly, the dangerous state may be ended to
late.
b
Plan the integration of the safety component in accordance with the machine
requirements, see "Project planning", page 12.
DANGER
H
azard due to lack of effectiveness of the protective device
In the case of non-compliance, it is possible that the dangerous state of the machine
may not be stopped or not stopped in a timely manner.
b
Please read this document carefully and make sure that you understand the con‐
tent fully before working with the device.
b
Follow all safety notes in this document.
Improper installation or manipulation can lead to serious injuries.
2.2 Intended use
The safety relay is an evaluation unit device for switching safety-related circuits on and
of
f for the following sensor types:
•
Emergency stop pushbutton
•
Safety switches
The safety relay complies with class A, group 1 as per EN 55011. Group 1 encom‐
passes all ISM devices in which intentionally generated and/or used conductor-bound
RF energy that is required for the inner function of the device itself occurs.
The safety relay must only be used within the limits of the prescribed and specified
technical data and operating conditions at all times.
Incorrect use, improper modification or manipulation of the safety relay will invalidate
any warranty from SICK; in addition, any responsibility and liability of SICK for damage
and secondary damage caused by this is excluded.
UL/CSA applications
If t
he product is being used in accordance with UL 508 or CSA C22.2 No. 14, the follow‐
ing conditions must also be met:
•
To protect the device’s 24-volt voltage supply, use a fuse with a maximum voltage
of 4 A and a minimum of 30 V DC in accordance with UL 248.
NOTE
T
he safety functions have not be evaluated by UL. Authorization is in accordance with
UL 508, general applications.
2.3 Improper use
The safety relay is not suitable for the following applications (this list is not exhaustive):
•
At altitudes of over 4,000 m above sea level
•
In explosion-hazardous areas
SAFETY INFORMATION 2
8023937/2019-10-11 | SICK O P E R A T I N G I N S T R U C T I O N S | ReLy EMSS3
7
Subject to change without notice