Safety switch / safety door SNO 4003K
  • Safety switch / safety door SNO 4003K

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Manufacturer: Wieland

Safety switch / safety door SNO 4003K

Base device for single-channel emergency stop andsafety gate monitoring
• Stop category 0 according to EN 60204-1
• Applications up to safety category 2 according to EN 954-1
• Safety category of the device: 4 according to EN 954-1
• Manual or automatic start
• 3 enabling current paths, 1 signaling current path
• Feedback loop for monitoring external contactors
 
Application
• Protection of people and machinery
• For immediate interruption of the power supply – stop category 0
• Monitoring of emergency stop applications
• Monitoring of safety gates
• Protective measures in sections of the safety system

Functions
The device is a single-channel switching device for emergency stop applications with self-monitoring on each ON-OFF cycle. It complies with EN 60204-1 and is equipped with positively driven relays.
The device has two reset inputs Y2 (without reset monitoring) or Y3 (with reset monitoring). The relays K1 and K2 are actuated either after the reset button (on Y1-Y3) has been pressed or automatically (bridge Y1-Y2). They become self-locking through their own contacts, if there is an electrical connection between terminal A1 and the
supply voltage (emergency stop button, position switches). After this switch-on phase the enabling current paths are closed and the signaling current path is open. If the electrical connections between terminal A1 and the supply voltage are interrupted, the enabling current paths open and the signaling current path closes. The energized state (self-locking) of the two channels is indicated by a green LED K1, K2. The second green LED indicates that supply voltage has been applied. The set-up of an emergency stop facility after stop category 0 (EN 60204-1) is possible. The device corresponds to category 4 for safety-related parts of controls (EN 954-1).

Proper use
The device is available for monitoring transducers (such as emergency stop buttons or
position switches) that are components of protective equipment on machines and are
used for the purpose of protecting people, material and machines.
• The safety category according to EN 954-1 depends on the external circuitry, the
choice of control devices and their placement on the machine.
• Expansion devices or external contactors with positively driven contacts can be used
to multiply the enabling current paths.
• The device and the contacts must be protected at max. 8 A.
• The emergency stop circuit must be closed before the reset button is activated.
• For connecting magnetic switches with reed contacts or sensors with
semiconductor outputs the peak input current must be considered (see “Technical
data”).
• The devices must be installed in a control cabinet with a protection degree of at
least IP 54.
• With AC supply and single-channel circuitry the maximum cable length for the safety
circuit of the transducers must be considered (see the notes on cable lengths and
“Technical data”

Please also note the information provided by your trade association

Connection scheme
Max. cable length of the input circuit with AC voltage

Cable data section  1,5 mm2
capacity                      150 nF/km
resistance                    28 Ω/km
temperature                   +25 °C
Circuit                         Alternating current (AC) cable not laid out in parallel,max. length lr:1 km


Tap line max. length of tap line l s and max. line capacity C  L depending on supply voltage U

                    UB     115        230 V
                    CL     37,5 nF   7,5 nF
                    lS      250m      50 m

 

 
Overview of devices / Part numbers
type Nominal voltage Terminals       numer              sztk/opak.
SNO 4003K AC/DC 24 V 50 - 60 Hz Terminal block, rising cage termination R1.188.0400.1     1
  AC 115 - 120 V 50 - 60 Hz Terminal block, rising cage termination R1.188.0880.1     1
  AC 230 V 50 - 60 Hz Terminal block, rising cage termination R1.188.0890.1     1
SNO 4003K-A AC/DC 24 V 50 - 60 Hz Terminal block, rising cage termination R1.188.0500.1     1
  AC 115 - 120 V 50 - 60 Hz Terminal block, rising cage termination R1.188.0900.1     1
  AC 230 V 50 - 60 Hz Terminal block, rising cage termination R1.188.0910.1     1

Technical dataSNO 4003K
Function
according to EN 60204-1
Emergency stop relay
Function display
2 LEDs green
Function diagram
FD 221-3-1 W, FD 221-3-2 W
Power supply circuit
 
Devices with rated voltage AC / DC 24 V
min typ max
Operating voltage range
AC/DC 20,4 V AC/DC 24 V AC/DC 26,4 V
Residual ripple
2,4 Vss
Rated consumption DC
- 1,3 W 1,6 W
Rated consumption AC
- 1,8 W/3,2 VA 2,2 W/3,9 VA
Rated frequency AC
50 Hz   60Hz
Input inrush current (A1)
- - 1,7 A
Rated short-circuit current
- 1400 mA -
Response time / recovery time
2 s/3 s
Fuse for control circuit supply
resistor PTC
Electrical isolation supply circuit – control circuit
no
Devices with rated voltage AC 115-120 V / AC 230 V
 
Operating voltage range Un= AC 115-120 V
AC 93,5 V AC 115-120 V AC 132 V
Operating voltage range Un= AC 230 V
AC 195 V AC 230 V AC 253 V
Rated consumption
- 2,0 W/2,3 VA 2,4 W/2,8 VA
Rated frequency AC
50 Hz   60Hz
Wire length to the safe transducer
(wires installed in parallel; see the notes on the wire lengths)
Fuse for control circuit supply
Short-circuit proof transformer
Electrical isolation supply circuit – control circuit
yes
Control circuit
 
Conductor resistance in Y1-Y2 or Y1-Y3 (at U
N
dep. on supply voltage)
- - 70 Ω
Rated output voltage to the supply of input Y2
  DC 24 V -
Open circuit voltage
- - DC 40 V
Rated current / peak current (inputs Y2, Y3)
  - 90 mA/1500 mA
Release time tR (K1, K2)
- 60 ms 80 ms
Response time tA1 (devices with rated current AC 115-120 V / AC 230 V)
- 180 ms 300 ms
Response time tA1 (devices with rated voltage AC / DC 24 V)
- 40 ms 60 ms
Response time tA2
  40 ms 60 ms
Minimum ON time tM1(Y2)
tA1 - -
Minimum ON time tM2(Y3)
tA2   -
Recovery time tW
- - 200 ms
Stand-by time tB
    300 ms
Output circuit
 
Contact assignment
3 enabling current paths with positively driven contacts (NO), 1 signaling current path (NC)
Rated switching voltage U
 UN
AC/DC 230 V
Max. continuous current IN per current path, NO / NC
8 A/5 A
Max. total current of all current paths for devices with rated voltage AC / DC 24 V
12 A
Max. total current of all current paths
for devices with rated voltage AC 115-120 V / AC 230 V
8A
Application category according to EN 60947-5-1      360 h-1
                                                                    3600 h-1
AC-15: Ue 230 V, Ie 4 A / DC-13: Ue 24 V, Ie 4 A
AC-15: Ue 230 V, Ie 3 A / DC-13: Ue 24 V, Ie 2,5 A
Short-circuit protection max. fuse
6 A class gG or circuit breaker with trigger characteristic B or C
Short-circuit protection, fuse
max 8A
Mechanical life
10x106 switching operations
General data
 
Creepage distances and clearances between the circuits
according to EN 60664-1
depending on device version; see “Electrical isolation, supply circuit”
Overvoltage category
III
Rated impulse voltage
4 kV
Rated voltage
AC 300 V
Test AC voltage
2 kV
Degree of pollution of the device: inside / outside
2/3
Protection degree according to DIN EN 60529 (housing / terminals)
 
Ambient temperature / storage temperature
-25 - +55 °C/-25 - +75 °C
Dimension diagram
K 4-1 (screw terminals / K 4-2 (pluggable terminals)
Wire ranges fine-stranded / solid or fine-stranded with ferrules
2x0,14 - 0,75 mm2/1x0,14 - 2,5 mm2
1x0,25 - 2,5 mm2/2x0,25 - 0,5 mm2
Permissible torque
0,5 - 0,6 Nm
Weight for devices with rated voltage AC / DC 24 V
0,20 kg
Weight for devices with rated voltage AC 115-120 V / AC 230 V
 

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