Position switches
for locations with flamable dust
Operating Instructions
Read and understand these instructions before installing, operating, or maintaining
the equipment.
DANGER
!
Hazardous voltage.
Will cause death or serious injury.
Disconnect power before working on
equipment.
Reliable functioning of the equipment is only ensured with certified components.
Important note
The products described here were developed to assume safety-related functions
within a system or machine. A complete safety-related system usually includes sen-
sors, evaluation units, signaling devices and concepts for ensuring safe switch-off.
The manufacturer of the system or machine is responsible for ensuring the correct
overall functioning. Siemens AG, its branch offices and associated companies (here-
inafter "Siemens") cannot guarantee all properties of a system or machine not de-
signed by Siemens. Siemens can also not assume liability for recommendations giv-
en or implied by the following description. No new guarantee/warranty or liability
claims in excess of the general terms and conditions of Siemens can be deduced from
the following description.
Areas of Application:
The position switches described here are suitable for use in Zone 22 locations where the-
re is a danger of explosion (device group II, device category 3D).
Installation (for dimension drawings, see Figure I, Dimensions in mm)
To be mounted on level surfaces using:
Always add washers and spring washers.
Fasten screws of the housing cover with 1,0 to 1,2 Nm.
Any mounting position possible.
Operation (see Figure
II)
A) Drive: actuated by straight bar in lifting direction and laterally
a) Single plunger
b) Rounded plunger
c) Roller plunger
d) Roller lever
e) Angled roller lever
f) Roller crank
(Plastic shaft)
g) Rod actuator
(molded-plastic rod)
h) Spring rod
i) Fork lever
1)
Operating range
2)
Lower edge of actuator
3)
Mechanical contact section of rod
4)
Minimum deflection (to ensure reliable operation)
5)
Maximum deflection (to prevent damage)
6)
for 3SE2120
7)
for 3SE2100
Operating point to DIN EN 50041
V
max. actuating speed
max.
H
Actuator travel difference
→
Direction of actuation
Minimum force requirement in direction of actuation:
for 3SE.1.0-.B, E, F, R
for 3SE.1.0-.C, D
Minimum torque in direction of actuation:
for 3SE.1.0-.GW, WW
B) Contact elements
Snap-action contacts, connection designation acc. to EN 50013
The switching point of snap-action contacts remains constant throughout the entire
tool life, independent of contact erosion.
C) Nominal actuator travel and relevant terminals
a) in direction of travel
b) with lateral actuation
c) Deflection in direction of rotation
d) Deflection of the spring rod, can be accessed from all sides
0-line Reference line to DIN EN 50041
s)
Actuator travel to DIN EN 50041
H)
Actuator travel distance
Contact closed
Contact open
1)
Operating point for return travel
2)
Enforced opening to DIN IEC 60947-5-1
2
Order No.: 3ZX1012-0SE21-0AA1
Connecting
Conductor cross-sections and connecting torque, refer to Fig. III
a) for terminals on the inside
b) for grounding terminal on the outside
ATTENTION
!
Only cable entries that comply with the requirements of EN 50014 may be used.
The cable entries must be constructed and mounted such that the degree of pro-
tection according to DIN VDE 0470 and IEC 60529 is not impeded. Cable entries
that are not used must be closed using the supplied screw plugs.
The required torque is 1.1 Nm.
Changeover mechanism for 3SE.120- (refer to Fig. IV)
Order Nos. 3SY3110 and 3SY3027. Mount intermediate plate (b) on the position
switch (a). Install base plate (c) at the mounting location. Put the position switch into
place and lock it by means of the interlocking lever (d).
Modification options
The drives must not be swapped for other types of drives and must not be used to
change the direction of actuation.
The roller crank or rod actuator can be offset on the drive shaft by 10 ° to 10 ° and
turned around by 180 ° (screw must be loosened).
Securing against position change (fixing)
If used as a safety position switch, positive fixing is required. If fixed by means of ob-
long holes, locating pins or fixing pads must additionally be used.
Protection against actuation and overriding
Position switches should be arranged so that they will not be damaged during actua-
tion and overriding. They must therefore not be used as a mechanical stop. The
height of the skate or the cam should be less than the entire travel in the switch to
avoid mechanical loading of the switch or its fixing arrangement.
2 M5 screws
Maintenance
Replacing the switching insert
Order No. 3SE3000-1A. Remove the screws of the enclosure cover, lift the switching
insert from the upper edge with a screwdriver. Push the new insert onto the two spig-
ots in the enclosure until it reaches its stop position.
3SE....-.B...
Fasten screws of the housing cover with 1,0 to 1,2 Nm.
3SE....-.C...
3SE....-.D...
Technical data
3SE....-.E...
Deg. of protection to DIN VDE 0470 and IEC 60529 IP67
3SE....-.F...
Permissible ambient temp. during operation
3SE....-.GW...
Maximum surface temperature T
3SE....-.WW...
Degree of pollution to DIN VDE 0110
3SE....-.R...
Mechanical life
3SE....-.T...
Electrical life
Utilization category I
Switching frequency
1)
(with contactors 3RH11, 3RT10, 3RT1017, 3RT1024 bis 3RT1026)
Switching accuracy
(when switching repeatedly, measured at the plunger of the contact element)
Rated insulation voltage U
Rated operational voltage U
only identical potential at U
Thermal rated current I
Rated operational voltage I
AC current 40 to 60 Hz
9 N
at U
e
18 N
0.25 Nm
DC current
at U
e
Short-circuit protection with DIAZED fuse links
weld-free acc. to VDE 0660 Part 200
Utilization category:
UL data
Rated voltage
Switching capacity
Continuous current
EN 60947-5-1/IEC 60947-5-1 (VDE 0600 Part 200)
)
1
/AC-15 at 230 V
e
1)
i
e
>300 V AC
e
th
e
24 V/125 V
230/220 V
400/380 V
500 V
24 V
48 V
110 V
220 V
440 V
3SE2100-1....-0AE0
3SE2120-1....-0AE0
EN 50281-1-1/EN 50014
English
–30 to +85 °C
+85 °C
Class 3
6
30 x 10
switching cycles
6
10 x 10
switching cycles
6
0.5 x 10
switching cycles
6000 switching cycles/hour
0.05 mm
500 V
AC 500 V
10 A
I
/AC-12
I
/AC-15
e
e
10 A
10 A
10 A
6 A
10 A
4 A
10 A
3 A
I
/DC-12
I
/DC-13
e
e
10 A
10 A
6 A
4 A
4 A
1 A
1 A
0.4 A
0.5 A
0.2 A
gL/gG 6 A
quick 10 A
600 V
Heavy Duty, A600 / Q600
10 A