Pull-wire Emergency-Stop switches
ZQ 900
Technical data
Contact variants
Standards:
49,5
48
40
71,3
96,4
¤6,5
133,13
219,7 - 235,7
10
12
¤16
27
M20x1,5
69,7
98
71,5
• To EN ISO 13850 / IEC 60947-5-5
• Metal enclosure
• 4 contacts
• Position indicator
• Robust design
• Large wiring compartment
• 3 cable entries M20
• One tension force for wire lengths
from 5 to 50 m
• Wire up to 50 m long
• Reset pushbutton
• Twisting of connection ring not possible
• Optional signaling lamp
• External watertight collar
• Wire pull and breakage function
• EX version available
• AS-Interface Safety at Work available
IEC/EN 60947-5-1
IEC/EN 60947-5-5
EN ISO 13850
Enclosure:
zinc die-cast, enameled
Cover:thermoplastic
Protection class:
IP65, IP67
suffix N: IP65
to IEC/EN 60529
Contact material:silver
Contact type:
1 NC/1 NO
or 2 NC/2 NO
or 3 NC/1 NO
or 2 NC
or 4 NC
Switching principle:
A IEC 60947-5-1
snap action with positive
break NC contacts
Connection:
screw terminals
Cable section:
max. 2.5 mm²
(incl. conductor ferrules)
Cable entry:
3 x M20
Uimp:
6 kV
Ui:
500 V
Ithe:
6A
Utilization category:
AC-15, DC-13
Ie/Ue:
4 A / 230 VAC
1 A / 24 VDC
Max. fuse rating:
6 A gG D-fuse
to DIN EN 60269-1
Ambient temperature:
−25 °C … +70 ºC
Mechanical life:
> 1 million operations
Indicator lamp:optionally
Maximum cable length:
50 m
(please observe ambient
temperature range
and wire supports)
Features:
wire pull and
breakage detection
Classification:
Standards:
EN ISO 13849-1
B10d (NC):
100,000
Mission time:
20 years
MTTFd
Approvals
B10d
0,1 x nop
nop
1 NO/1 NC
21
13
22
14
2 NC
21
11
22
12
1 NO/3 NC
21 22 21 22
13 14 11 12
S1
S2
2 NO/2 NC
21 22 21 22
13 14 13 14
S1
S2
4 NC
21 22 21 22
11 12 11 12
S1
S2
d op x h op x 3600 s/h
t cycle
F
Ordering details
ZQ 900-➀➁
No. Replace Description
➀
11
13
22
02
04
➁
N
2-2
1 NO/1 NC
1 NO/3 NC
2 NO/2 NC
2 NC
4 NC
Without emergencystop pushbutton
Without emergencystop pushbutton
Note
Recommended cable lengths for pull-wire
Emergency-Stop switches in relation to the
range of ambient temperature.
At 5 m distance intermediate wire supports
are required, see accessories.
Note
The screwed PL-M20-24V indicator lamp
must be ordered separately, see accessories.
The protection class for ordering suffix N is
IP65 to IEC/EN 60529.
-10 0 10 20 30 40 50 60 70 80 T[°C]
10
20
30
40
50
l [m]
For more information, see our online product catalog: www.usa.schmersal.net
Pull-wire Emergency-Stop switches
Mode of operation
Wire pull and breakage detection
1
Legend
1 Not actuated
2 Wire pull detection
3 Wire breakage detection
1
2
0
F
3
0
Mounting instructions
One-side operation
Legend
1
Wire rope (STQ441-SC)
2
Eyebolt (STQ441-EB)
3
Spring (STQ441-SS)
4
Wire clamp (STQ441-CC)
5
Tensioner (STQ441-TB)
6
Wire thimble (STQ441-TH)
7
Shackle (S900-SH)
8
Rope tensioner (S900)
A
B
C
max. 50 m
B
C
3-5 m
A
0,1m
64
Position indicator
Emergency-stop pushbutton
Reset button
2
4 6
B
C
5
6 4
max. 50 m
2 1
4 6 3
2
4 6 3
2
3-5 m
A
0,1m
8
Mounting instructions
2
1
2
Thimble deformation
As the thimbles are subject to deformation in
case of wire pull, the wire should be pulled
several times after fitting.
After that, the wire must be re-tensioned using
the eyebolt or the tensioner.
For more information, see our online product catalog: www.usa.schmersal.net
2-3