4
Translation of the original instructions
BA000537 - 09/2012 (Rev. E)
SNO 4063K / -A, SNO 4063KM / -A
SUPPLY
K1
K2
A1
SNO 4063K
S35
13
S33
23
S31
33
S34
S11
A2
S12
14
S21
24
S22
34
Basic device for Emergency-Stop and Safety Gate Applications
•
Base device to EN 60204-1and EN ISO 13849-1for single-channel and two-channel emergency
stop monitoring.
•
PL e / category 4 acc. EN ISO 13849-1
•
SILCL 3 acc. EN ISO 62061
•
Stop category 0 to EN 60204-1
•
Manual or automatic start
•
With/without cross monitoring
•
Feedback circuit for monitoring external contactors
•
3 enabling current paths, NO contacts, positively driven
•
For processing signals from the output signal switching devices (OSSD) of a light grille acc. to
EN 61496-1
•
For connecting to a switching mat acc. to EN 1760-1 (SNO 4063KM)
•
Input debouncing (SNO 4063KM)
Device style
SNO 4063K / KM
with screw terminals
SNO 4063K-A / KM-A
with plug-in terminals
Front View
SUPPLY LED green Power Supply, K1 / K2
LED green Relay K1 / K2
Safety Instructions
Description of Device and Function
SNO 4063K
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 (trig-
gering with falling edge) or to close reset input S35 (triggering with rising edge).
•
Automatic start
Reset input S35 is connected to S33. 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 operated.
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. Restarting
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 semiconductor
outputs can be processed. Test pulses < t
TP
do not influence the device functions. Test pulses >
t
TP
can lock the device.
•
Synchro-check
With two-channel activation both safety channels are monitored together with
synchronous time t
S
. Safety channel CH1 must close before CH2 and bridge S33/S35 must be
connected. If CH2 closes before CH1, the synchronous time t
S
=
∞
.
SNO 4063KM
The functions correspond to those of SNO 4063K 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
channels 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
ASP
. When the safety inputs open for longer than t
ASP
the enabling paths
open after t
R
. Restarting is prevented for time t
SP
.
Please observe instructions from safety authorities.
Only trained professional electricians may in-
stall, startup, modify, and retrofit this equip-
ment! Disconnect the device / system from all
power sources prior to starting any work! If
installation or system errors occur, line voltage
may be present 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 con-
ditions 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 DIN VDE 0660 Part 514.
