Wieland SNT 4M63K Translation Of The Original Instructions page 4

Translation of the original instructions
BA000538 - 09/2013 (Rev. D)
SNT 4M63K / -A
A 1 13 23 33
S 23 S 24 S 33 S 34
SUPPLY
K1
K2
S N T 4M 63K
S 13 S 14 S 35 S 22
A 2 14 24 34
Safety Instructions
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 equip-
ment / system prior to starting any work!
2. Lockout/tag the equipment / system to
prevent 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 DIN EN 60529.
Housing/terminals: IP 40/ IP 20.
Finger-proof acc. to DIN VDE 0660 Part 514.
4
Base Device for Emergency Stop and Safety Gate Applications

Basic device to EN 60204-1:2005 and EN ISO 13849-1:2008

PL e / category 4 in accordance with EN ISO 13849-1:2008

SILCL 3 in accordance with EN 62061:2005

Stop category 0 to DIN EN 60204-1

Manual or automatic start

Cross monitoring

Feedback circuit for monitoring external contactors

3 enabling current paths

Equivalent and non-equivalent activation

Monitoring of magnetic switches to DIN EN 60947-5-3
Device style
SNT 4M63K with screw terminals
SNT 4M63K-A with plug-in terminals
Front View
SUPPLY LED green Power Supply
K1 LED green Relay K1
K2 LED green Relay K2
Description of Device and Function
This device is a two-channel safety switching device with self-monitoring on each ON-OFF cycle. It
conforms to DIN EN 60204-1 and is equipped with positively driven relays. It is intended for
monitoring connected switching elements on separating safety devices and generating a safety-
oriented output signal (enable). Depending on the design, separating safety devices may include
protective screens, safety doors, enclosures, covers, screens, etc.
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 the enabling current paths will open.
Operating modes / system functions

Two-channel activation The device uses two-channel activation. With equivalent activation
safety channel CH1 is connected via positive potential, safety channel CH2 via negative
potential. With non-equivalent activation both safety channels are connected to positive
potential.

Cross monitoring With equivalent activation cross monitoring is achieved by means of the
short-circuit principle; with non-equivalent activation it is achieved through functional
diversity.

Manual start When the safety inputs are closed, a button is used to close reset input S34
and then open it again (triggering with falling edge) or to close reset input S35 (triggering
with rising edge).

Automatic start Reset input S35 is connected to S33/S14. The device starts with the rising
edge of the signal on safety input S14.

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.

Synchro-check Synchro-check is only possible in automatic start mode (bridge S33/S14 -
S35). After safety channel CH1, safety channel CH2 must close (S24) or open (S22) within the
synchronous time t . If CH2 closes or opens before CH1, the synchronous time t
S
Please observe instructions from safety authorities.
= .
S