Front View; Safety Instructions - Wieland SNO 4062K Instrucciones De Uso

Translation of the original instructions
BA000536 - 01/2011 (Rev. G)
SNO 4062K, SNO 4062KM
13 23 24 31
A1 S33 S34 S35
SUPPLY
K1
K2
SNO 4062K
S21 S22 S31 A2
14 S11 S12 32

Safety Instructions

Only trained professional electricians may in-
stall, startup, modify, and retrofit this equipment!
Disconnect the device / system from all power
sources prior to starting any work! If installation
or system errors occur, line voltage may be pre-
sent at the control circuit in devices without DC
isolation!
Observe all electrical safety regulations issued
by the appropriate technical authorities or the
trade association. The safety function can be
lost if the device is not used for the intended
purpose. Opening the housing or any other ma-
nipulation will void the warranty.
Caution!
If the device has been subjected to improper or
incorrect use it must no longer be used, and the
guarantee loses its validity. Impermissible condi-
tions include:
strong mechanical stress, for example through a
fall, or voltages, currents, temperatures or hu-
midity outside of the specifications.
Before starting up your machine/plant for the
first time, please be sure to check all the safety
functions according to valid regulations, and
observe the specified test cycles for safety
equipment.
Caution!
Perform the following precautionary steps prior
to installation, assembly, or disassembly:
1. Disconnect supply voltage to the equipment
/ system prior to starting any work!
2. Lockout/tag the equipment / system to pre-
vent accidental activation!
3. Confirm that no voltage is present!
4. Ground the phases and short to ground!
5. Protect against adjacent live components
using guards and barriers!
6. The devices must be installed in a cabinet
with a protection class of at least IP 54.
Caution!
Limited contact protection! Protection type ac-
cording to EN 60529.
Housing/terminals: IP 40/ IP 20.
Finger-proof acc. to EN 50274.
4
Basic device for Emergency-Stop and Safety Gate Applications
• Basic device to EN 60204-1:2005 and EN ISO 13849:2007 for single or dual E-stop monitor-
ing.
•
PL e / category 4 in accordance with EN ISO 13849-1:2007
• SILCL 3 in accordance with EN 62061:2005
• Stop category 0 acc. EN 60204-1
•
Manual or automatic start
• Cross monitoring
• Feedback loop to monitoring external contactors
• 2 Enabling paths, 1 signalling path
• Processing of signals from output switching devices (OSSD) of light curtains
acc. EN 61496-1.
• To connect to load side of safety mats acc. EN 1760-1 (SNO 4062KM)
• Debouncing of inputs (SNO 4062KM)
Device style
SNO 4062K / K-A with screw-type terminals; SNO 4062K-A / KM-A with screw-type terminals plug-
gable; SNO 4062K-C / KM-CA with spring-type terminals pluggable

Front View

SUPPLY LED green
K1 LED green
K2 LED green
Description of Device and Function
SNO 4062K This device is a two-channel safety switching device for emergency stop applications
with self-monitoring on each ON-OFF cycle. It conforms to EN 60204-1 and is equipped with posi-
tively driven relays.
Basic function: After supply voltage has been connected to terminals A1/A2 and the safety inputs
closed, operating the reset button closes the enabling current paths (manual start). When the safety
inputs are opened/de-excited the enabling current paths will open.
Operating modes / system functions
•
One- or two-channel activation With single-channel activation both safety channels CH1 and
CH2 are connected in parallel, with two-channel activation they are connected separately.
• Without cross monitoring Both safety channels are connected to positive potential (S12 and
S31 to S11).
• With cross monitoring Safety channel CH1 is connected to positive potential (S11 to S12)
and safety channel CH2 to negative potential (S21 to S22).
• Manual start When the safety inputs are closed, a button is used to open reset input S34
(triggering with falling edge) or to close reset input S35 (triggering with rising edge).
•
Automatic start Reset input S35 is connected to S12. The device starts with the rising edge
of the signal on safety input S12.
• Starting lockout After supply voltage has been connected and the safety inputs closed, the
enabling paths will not close. Starting is only possible after the reset button has been oper-
ated. For starting lockout the reset inputs have to be activated with the button, as in manual
start mode.
• Restarting lockout No restart after the safety inputs have been opened and closed. Restart-
ing is only possible after the reset button has been operated. For restarting lockout the reset
inputs have to be activated with the button, as in manual start mode.
• OSSD-compatible OSSD signals from a light barrier or other safety sensors with semiconduc-
tor outputs can be processed. Test pulses < t
pulses > t can lock the device.
TP
• Synchro-check With two-channel activation both safety channels are monitored together with
synchronous time t . Safety channel CH1 must close before CH2 and bridge S12/S35 must be
S
connected. If CH2 closes before CH1, the synchronous time t
SNO 4062KM The functions correspond to those of SNO 4062K without simultaneity monitoring.
The device is suitable for connecting to short-circuit-forming 4-wire switching mats, switching strips
and switching edges (without monitoring resistance). The device must be operated with two chan-
nels and cross monitoring. If there is resistance < 50 Ω/channel and a short circuit between the
channels (S11/S12 and S21/S22) the enabling paths open and the SUPPLY LED flashes. Input
debouncing prevents fast consecutive switching of the enabling outputs when the safety inputs
open for shorter than t . When the safety inputs open for longer than t
ASP
after t . Restarting is prevented for time t
R
Please observe instructions from safety authorities.
do not influence the device functions. Test
TP
= ∞.
S
.
SP
the enabling paths open
ASP