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SIGNUM
Control Devices, Pushbutton Units and Pilot Lights
Instructions
!
WARNING
HAZARDOUS VOLTAGE.
Can cause electrical shock
and burns.
Disconnect power before proceeding
with any work on this equipment.
Maintenance may only be performed by qualified personnel.
Follow the installation instructions!
Assembly
No special tools are required for mounting and removing the products of
the SIGNUM series. (Exception: pushbuttons with extended stroke:
3SX1707 assembly spanner required for ring nuts). The 3SB3921-0BC
assembly tool is required for removal of the covering caps for all metal
actuators and indicators and for indicators made of plastic material.
The lighting elements can be accessed and replaced by removing the
covering caps. In the case of lampholders with an integrated LED, the
lighting element cannot be replaced separately.
The contact blocks and lampholders are snapped on by means of a
knuckle joint.
Minimum clearances and diameters of the drilled holes or
cutouts, Fig. I
a
3SB3 round range
b
3SB3 square range
1) For contact blocks with one contact - screw terminals
2) For contact blocks with two contacts
3) For contact blocks with solder connection and for contact blocks
with one contact - spring-type terminal
4) When using label holders for inscription plate 12.5 mm x 27 mm
5) When using label holders for inscription plate 27 mm x 27 mm
In the case of mushroom pushbuttons, push-pull buttons and
EMERGENCY-STOP units, note mushroom diameter D = 32, D = 40 mm or
D = 60 mm.
Front plate mounting, Fig. II
Round range: front plate thickness 1 to 6 mm
Square range: front plate thickness 1 to 4 mm
A Actuator
B Inscription plate
C Label holder
D Front plate
E
Holder with fixing screw F
G Contact block
Use on printed-circuit board, Fig. IIIa
Spacings of solder pins and hole diameter, Fig. IIIb
A Actuator
B Front plate
C Holder
D Printed-circuit board holder
E
Lampholder
F
Contact block
G Printed-circuit board
+0.1
H Solder connection Ø 1.3
+0.2
I
Mounting hole Ø 3
mm
+0.1
J
Centring hole Ø 4.2
mm
K Fixing screw Ø 3 x 10 to DIN 7970
Assignment of sequence numbers and function numbers, Fig. IV
a
1-pole contact blocks
b
2-pole contact blocks
The terminals are numbered as follows: NO contacts .3 and .4, NC con-
tacts .1 and .2, and lampholders X1 and X2.
4
mm
IEC/EN 60947-5-1, IEC/EN 60947-5-5 (VDE 0660, Part 200)
Order No.: 3ZX1012-0SB30-1AA1
Mounting the holder, Fig. Va, b
The holder for round actuators can be used for two ranges of front plate
thicknesses. As delivered, the holder is set to the thickness of 1 to 4 mm,
Fig. Va and is mounted from behind onto the actuator/indicator in the di-
rection of the arrow x 1 - 4 mm x. The fixing screw is located under-
neath, on the right.
For a front plate thickness of 3 to 6 mm the holder is reversed and
mounted in the direction of the arrow x 3 - 6 mm x. In this case the fix-
ing screw must be turned anti-clockwise to the stop before the holder is
put in place, Fig. Vb.
Square actuators can be mounted in 1 to 4 mm switchboards.
Mounting the contact blocks and lampholders, Fig. VI
The contact block is positioned to the rear of the actuator and pressed
onto the rear to snap into place, Fig. VIa. Without accessories, a maxi-
mum of two contact blocks or one lampholder can be mounted.
If three contact blocks or one lampholder and one/two contact blocks
are required, before the contact blocks are snapped on the holder must
be mounted on the actuator, Fig. VIb.
The holder is included in the scope of delivery with all illuminated actu-
ators (with the exception of indicators). In order to mount three contact
blocks in the case of selector switches, key-operated switches and dou-
ble pushbuttons an extension holder with thrust pads is required (not
included), Fig. VIc. To disassemble the contact blocks, use a screw-
driver to press on the knuckle joint of the contact block, Fig. VId.
Mounting the lamp transformer, Fig. VIIa
The transformer is snapped onto a BA9s lampholder with screw termi-
nals. The terminals of the lampholder must be tightened. In addition to
the lampholder, two 1-pole contact blocks with screw terminals can be
fitted. To remove the transformer, the snap hooks on the lamp transformer
must be released from the lampholder with a screwdriver,
Fig. VIIb.
Replacing lamps, Fig. VIII
Lighting elements can be replaced from the front without disassembling
the control device (exception: lampholder with integrated LED - the LED
is permanently fixed in the mount). To do this, the handle of the actua-
tors/indicators must be removed first, Figs. VIIIa to h.
For lamp change see Fig. i and j.
a
Indicator light, round
b
Indicator light, square
c
Illuminated pushbutton/switch, plastic
d
Illuminated pushbutton/switch, metal
e
Twin pushbutton, illuminated
f
Mushroom pushbutton/push-pull button, illuminated
g
Selector switch, illuminated, plastic
h
Selector switch, illuminated, metal
i
Removal of the lamp with lamp extractor (accessory)
j
Installation of the lamp with lamp extractor (accessory)
Mounting the insert labels (accessory), Fig. VIIIc/d
The insert label is inserted between the cap A and button B.
Insert labels can only be used with illuminated pushbuttons and illumi-
nated pushbutton switches.
Dimension drawings for the round range
Plastic range, Fig. X (dimensions in mm)
a
Illuminated pushbutton/switch and pushbutton/pushbutton switch
with flat button
b
Illuminated pushbutton/pushbutton with raised button
c
Illuminated pushbutton/pushbutton with raised front ring
d
Pushbutton with raised front ring 18.5 mm
e
Illuminated pushbutton/pushbutton with raised front ring with
castellations
f
Indicator light
g
EMERGENCY-STOP mushroom pushbutton (unlocking by pulling)
h
EMERGENCY-STOP mushroom pushbutton (unlocking by turning)
Ø32 mm, Ø40 mm, Ø60mm
3SB3
English
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