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9
Operating Instructions
Safety Switch STA…EX
Figure 3: Switching elements and switching functions
E2
E1
E1
E2
E1
E2
Guard open
Guard closed
and not locked
Guard closed
and locked
Type
STA3‑2131..
STA4‑2131..
STA3‑4121..
STA4‑4121..
Figure 2: Dimension drawing for STA… without insertion funnel and STA… with insertion funnel
Necessary minimum permissible overtravel
Approach direction
Actuator S
standard
Actuator L
insertion funnel
Horizontal (h)
24.5 + 5
28.5 + 5
Vertical (v)
24.5 + 5
28.5 + 5
Key to symbols
/
Guard locking ready for operation
/
Guard locking released
Locking screw
Auxiliary release
Ø 5.3 (4x)
for M5 > 35 mm
ISO 1207/ISO 4762
M = 1.5 Nm
Actuating head with insertion funnel
4
19
19
h
v
0,5
35,5
45,5
30
194
4
9
16
4
M = 1,5 Nm
0,5
4
Cover screw
(4x, M = 1.5 Nm)
Earth conductor terminal:
Ground the switch via the
earth conductor terminal
to prevent electrostatic
charging.
y
Cable gland M20x1.5
(included)
Clamping range Ø 6.5 … 12 mm
Protective plate