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O P E R A T I N G I N S T R U C T I O N S
The UE44 3SL safety relay is used only for volt-free safety
sensors, e.g.:
emergency stop pushbuttons (EN ISO 13 850): single-
UE44 3SL
channel, dual-channel, e.g. SICK ES21
safety switches (EN 1088): single-channel, dual-channel
Safety relay
safety switches with interlocking (EN 1088): single-
channel, dual-channel
2.3
Correct use
GB
The UE44 3SL safety relay must be used only as defined in
section 2.2 "Applications of the device".
SICK AG • Industrial Safety Systems
It must be used only by qualified safety personnel and only
Erwin Sick-Straße 1
on the machine where it has been installed and initialised
D-79183 Waldkirch • www.sick.com
by qualified safety personnel in accordance with the opera-
8009661/W340/2012-11-30 • RV/XX
ting instructions. If the device is used for any other purposes
Printed in Germany (2012-12) • All rights reserved •
or modified in any way — also during mounting and instal-
Subject to change without notice
lation — any warranty claim against SICK AG shall become
void.
2.4
General safety notes and protective
measures
Pay attention to the safety notes and protective
measures!
1
Scope
Please observe the following items in order to en-
These operating instructions are only applicable to the
sure the correct use of the UE44 3SL safety relays.
UE44 3SL safety relays with the following entry on the
During the mounting, installation and usage of
type label in the field Operating Instructions:
the safety relays, observe the standards and
8009661
directives applicable in your country.
You will find the device's date of manufacture on the
The national/international rules and regulations
type label in the field Date Code in the format yywwxxxx
apply to the installation, commissioning, use
(yy = year, ww = calender week, xxxx = serial number).
and periodic technical inspection of the safety
relay, in particular:
These operating instructions are original operating
instructions.
– Machinery Directive 2006/42/EC
– Work Equipment Directive 2009/104/EC
2
On safety
– EMC directive 2004/108/EC
This chapter deals with your own safety and the safety
– the work safety regulations and safety rules
of the equipment operators.
Manufacturers and operators of the machine on
Please read this chapter carefully before working
which a safety relay is used are responsible for
with the UE44 3SL or with the machine protected by
obtaining and observing all applicable safety
the UE44 3SL.
regulations and rules.
2.1
Qualified safety personnel
The tests must be carried out by qualified safety
personnel or specially qualified and authorised
The UE44 3SL safety relay must only be installed,
personnel and must be recorded and documen-
commissioned and serviced by qualified safety
personnel.
ted to ensure that the tests can be reproduced
and retraced at any time by third parties.
Qualified safety personnel are defined as persons
The operating instructions must be made avai-
who ...
lable to the operator of the machine where the
have undergone the appropriate technical training
UE44 3SL is used.
and
The machine operator is to be instructed in the
have been instructed by the responsible machine
use of the device by qualified safety personnel
operator in the operation of the machine and the
and must be instructed to read the operating
current valid safety guidelines and
instructions.
have access to the operating instructions of the
UE44 3SL safety relay and have read and
2.5
Environmental protection
familiarised themselves with them.
Disposal of unusable or irreparable devices must always
2.2
Applications of the device
occur in accordance with the applicable country-specific
The UE44 3SL safety relay can be used:
waste-disposal regulations (e.g. European Waste Code
16 02 14).
in accordance with EN ISO 13 849-1 up to PL e and
category 4
3
Product description
in accordance with EN 62 061 to SILCL3
The actual category achieved depends on the external
3.1
Structure and operating principle of the
circuit, the design of the wiring, the selection of the
device
control switch and its placement on the machine.
The inputs on the UE44 3SL safety relays are prepared for
The UE44 3SL safety relay has been evaluated to
the connection of the safety sensors listed in section 2.2
UL 508.
"Applications of the device". Two separate input circuits
The related actuators on the machine or system can be
control the internal relays. The two enable current paths and
safely shut down using the safety relay's output signal
the delayed switch on current path are designed as safe
switching contacts.
outputs.
quired level of protection as per EN 62 305-1 can be
3.2
Device functions
achieved using an external snubber circuit. The protec-
Opening of the input circuits results in immediate opening
tion elements (SPD – surge protective devices) must
of two enable current paths and delayed closing of the third
comply with the requirements as per EN 61 643-11.
current path.
Note
Switch on delayed current path: This current path closes
The basic insulation of the components connected to the
with an adjustable delay of 0.15 ... 3 s or 1.5 ... 30 s in
module must match the highest voltage connected to the
relation to the opening of the two enable current paths. As a
module.
result a mechanical locking device can be triggered when
both input circuits open.
All circuits (and if necessary other EDM) must then also be
designed for the highest voltage level.
Manual reset: Closing the input circuits does not result in
immediate closing of the two enable current paths, this
All connections, wiring and cable runs must comply with
action is only performed after the actuation of the reset
the required category as per EN ISO 13 849-1 and the
button. The delayed switch on current path opens at the
required SIL claim level as per EN 62 061 (e.g. cables
same time as the enable current paths are closed. The reset
laid with protection, individually sheathed cable with
takes place with the falling or rising edge depending on the
screen etc.).
circuit.
To protect the contact outputs on the UE44 3SL and to
Automatic reset: Closing the input circuits results in the
increase the service life, the loads connected must be
immediate closing of the two enable current paths. The
equipped with, e.g., varistors and RC circuits. Please also
delayed switch on current path opens at the same time as
note that the selection of the arc suppression can in-
the enable current paths are closed. This function is to be
crease the total response time of the safety function.
realised with a corresponding circuit.
The output signal switching devices and the external
Synchronous time monitoring: Simultaneous closing of the
device monitoring (EDM) must be wired in the control
input circuits is monitored. Only if input circuit 2 closes at
cabinet.
the latest 0.5 s after input circuit 1, do the enable current
To prevent the welding of the contacts on the built-in
paths switch. If input circuit 2 closes before input circuit 1,
relay, an overcurrent protection device with max. 6 A
no synchronous time is monitored and the enable current
short-circuit protection (duty class gG) is to be integrated
paths switch.
into the enable current paths (see Fig. 2, fuse F2/F3/F4).
External device monitoring: The EDM function monitors the
5.1
contact elements activated by the enable current paths
(e.g. motor contactors). By wiring the signalling contacts on
Terminal
the switching elements in series with the reset input, the
A1
enable current paths only close if all switching elements are
open. This control is only effective on reset.
A2
Cross circuit detection: A cross-circuit is detected on the
S11
dual-channel connection of the input circuits, if these are
S33
connected to different polarities.
S21
In order to attain SILCL3/PL e, connect the
S34
external device monitoring!
S35
In order to reach SILCL3/PL e, an external diagno-
S12
sis with DC L 99 % must be applied (i.e. the exter-
nal device monitoring must be connected).
S31
Please also read the notes in chapter 11 "Applica-
S22
tion examples".
13–14
23–24
3.3
Status indicators
37–38
Display
Meaning
5.2
SUPPLY
Green
Supply voltage active
K1/K2
Green
Relay K1 and K2 active
Single-channel operation
The safety sensor is connected between S11 and S12. Wire
K3/K4
Green
Switch on delayed relays K3 and
K4 active
jumpers are to be connected between S12 and S31 as well
as between S21 and S22.
4
Mounting
Dual-channel operation with cross-circuit detection
The two volt-free switching elements on the safety sensor
Mounting only with enclosure rating IP 54 or
are to be connected between S12–S31 and S21–S22. A
better!
wire jumper is to be connected between S11 and S31.
The safety relay is only allowed to be mounted in
5.3
the control cabinet. The control cabinet must at
least comply with enclosure rating IP 54.
Manual reset
Mounting in accordance with EN 50 274.
The reset button (N/O contact) is to be wired to the termi-
nals S33 and S34. The reset button is to be installed out-
The modules are located in a 22.5 mm wide modular
side the hazardous area such that it cannot be pressed from
system for 35 mm mounting rails as per EN 60 715.
inside the hazardous area. When operating the reset button,
5
Electrical installation
the operator must have full visual command of the hazar-
dous area.
Switch the entire machine/system off line!
Automatic reset
The system can start up unexpectedly while you are
A wire jumper is to be connected between S33 and S35.
connecting the devices.
5.4
The voltage supply must satisfy the regulations for extra-
The external device monitoring for the actuators integrated
low voltages with safe isolation (SELV, PELV) for over-
is only effective on reset. The connection of the N/C con-
voltage category III as per EN 60 664 and EN 50 178.
tacts for the contact elements operated in series with the
For installation in environments with overvoltage catego-
reset circuit provides static external device monitoring.
ry III, external protection elements must be used. The re-
6
Commissioning and regular
tests
Commissioning requires a thorough check by
qualified safety personnel!
Before you operate a system protected by the
safety relay for the first time, make sure that the
system is first checked and released by qualified
safety personnel.
Please read the notes in chapter 2 "On safety".
Observe the relevant laws and national
regulations.
Check the hazardous area!
Ensure there is nobody in the hazardous area
before commissioning.
Secure the hazardous area against entry.
Regular inspection of the protective devices by qualified
safety personnel
Check the system following the inspection intervals
specified in the national rules and regulations.
– Each safety application must be checked at an interval
specified by you.
– The effectiveness of the protective devices must be
checked daily by a specialist or by authorised
Pin assignments
personnel.
Description
If changes have been made to the machine or the
protective device, or the safety relay has been changed
Voltage supply (+24 V DC)
or repaired, you must again thoroughly check the entire
Voltage supply (0 V DC)
safety application.
+24 V DC (control voltage)
7
In the event of faults or errors
Supply for reset
0 V DC (control voltage)
Cease operation if the cause of the malfunction
Reset (falling edge)
has not been clearly identified!
Reset (rising edge)
Stop the machine if you cannot clearly identify or
allocate the error and if you cannot safely rectify
+ Input circuit 1 (K1)
the malfunction.
+ Input circuit 2 (K2)
– Input circuit 2 (K2)
Enable current path 1
Complete function test after rectification of
fault!
Enable current path 2
After rectifying a fault, perform a complete
Switch on delayed current path
function test.
Operating modes
10
Internal circuitry
Reset
External device monitoring
Fig. 1: Internal circuitry UE44-3SL
8
Ordering information
Part
Part number
(24 V DC design)
(type code)
UE44-3SL (0.15 ... 3 s)
6024907
with screw type terminals
(UE44-3SL2D33)
UE44-3SL (0.15 ... 3 s)
6024908
with removable terminals
(UE44-3SL3D33)
UE44-3SL (1.5 ... 30 s)
6024909
with screw type terminals
(UE44-3SL2D330)
UE44-3SL (1.5 ... 30 s)
6024910
with removable terminals
(UE44-3SL3D330)
9
Conformity
Type: Safety relay UE44 3SL
The manufacturer below herewith declares that the
product conforms with the provisions of the EC
directive(s) listed below and that the related standards
have been applied.
SICK AG, Erwin-Sick-Straße 1
D-79183 Waldkirch, Germany
Person empowered to draw up the technical
documentation:
Georg Plasberg
Management Board
Applicable directives:
Machinery Directive 2006/42/EC
EMC directive 2004/108/EC
Applicable standards:
EN 60 947 5 1
EN ISO 13 849 1
EN 62 061
EN 60 204 1
EN 61 326 3 1
EN 55 011
Notified body:
Prüf- und Zertifizierungsstelle im BG-PRÜFZERT,
Gustav-Heinemann-Ufer 130, 50968 Köln, Germany
ID number for the notified body: 0340
EC-type examination certificate number: ET 12116
You will find the signed EC declaration of conformity at:
www.sick.com. Search for: 9068881
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