7
Operating Instructions
Safety Switch STM…
Technical data
Parameter
Value
Housing material
Reinforced thermoplastic
Degree of protection
IP67
Mechanical life
2 x 10
6
operating cycles
Ambient temperature
-20 … +55 °C
Degree of contamination
(external, acc. to EN 60947-1) 3 (industrial)
Installation orientation
Any
Approach speed, max.
20 m/min
Extraction force (not locked)
30 N
Actuating force, max.,
at 20 °C
35 N
Actuation frequency
1,200/h
Switching principle
Slow-action switching contact
Contact material
Silver alloy, gold flashed
Connection
Cable entry M20 x 1.5
Conductor cross-section
(flexible/rigid)
0.34 … 1.5 mm²
Rated insulation voltage
U
i
= 250 V
Rated impulse withstand
voltage
U
imp
= 2.5 kV
Conditional short-circuit
current
100 A
Switching voltage, min.,
at 10 mA
12 V
Utilization category
acc. to EN 60947-5-1
AC-15 4 A 230 V /
DC-13 4 A 24 V
Switching current, min., at
24 V
1 mA
Short circuit protection
(control circuit fuse) acc. to
IEC 60269-1
4 A gG
Convent. thermal current I
th
4 A
Solenoid operating voltage/
solenoid power consumption
AC/DC 24 V (+10%/-15%) 6 W
AC
230 V (+10%/-15%) 6 W
Duty cycle
100%
Locking force F
max
STM.N
≥ 1,000 N
STM.A
≥ 2,000 N
With angled actuator
1,500 N
Locking force F
Zh
acc. to EN ISO 14119
(F
Zh
=
F
max
)
1.3
STM.N
700 N
STM.A
1,500 N
Reliability values acc. to EN ISO 13849-1
B
10D
at DC-13 100 mA/24 V
2 x 10
6
Fig. 4: Switching elements and switching functions
illustration: guard closed, actuator locked.
NC contact opens before NO contact closes (break before make).
Version
ÜK
SK
ÜK
SK
ÜK
SK
STM...222...
21
11
22
12
12
11
22
12
12
11
21
11
22
12
21
11
12
11
STM...242...
11
12
24
12
23
11
12
11
24
12
23
11
12
11
24
12
23
11
E1
E2
E1
E2
E2
E1
ÜK
SK
SK
ÜK
SK
ÜK
Guard open
Guard closed and not
locked
Guard closed and locked
Fig. 5: Minimum door radii
35,5
24,5 +5
12
26
R≥20
0
20
4
28,5 +5
16
30
35,5
20
R≥2
00
35
24,5+
5
R≥200
39
4
29,5+
5
R≥200
Hinged actuator S-OU-LN
for insertion funnel
Hinged actuator S-LR-LN
for insertion funnel
Hinged actuator S-OU-SN
Hinged actuator S-LR-SN
Actuator
Door radius, min.
[mm]
Actuator S-G…
300
Actuator S-W…
300
Hinged actuator S-OU…
200
Hinged actuator S-LR…
200
