HMI Components
Edition 01/2016
Series
02
Characteristics
Functions
Market segments
The robust Series 02 is especially
suited for:
The Series 02 incorporates the
following functions:
The EAO Series 02 is especially suited
for applications in the segments:
■
Flush design
■
■
The rectangular construction (24 x 36 mm)
provides large surfaces for illumination
and labelling.
■
■
■
Indicator
Pushbutton
Illuminated pushbutton
Keylock switch
Buzzer
■
■
Ship building
Panel building
Please refer to the EAO website to obtain detailed information regarding this series www.products.eao.com
Configure a product to your exact needs and request a quotation.
Content
02
Overview
Flush design
Indicator
4
Buzzer
5
Pushbutton
6
Illuminated pushbutton
7
Mushroom-head pushbutton
8
Keylock switch
9
Mushroom-head keylock pushbutton
10
Accessories
11
Technical data
21
Marking
23
Application guidelines
24
Index
25
3
02
Flush design
Indicator, IP 40
10 max.
37.6 x 23.5
Equipment consisting of (schematic overview)
84
7
Product can differ from the current configuration.
Front bezel
page 13
Lens
page 11
LED
page 17
Dimensions [mm]
Actuator
Additional Information
NJO
• For front dimension 24 x 36 mm
3NBY
• For LED element fitting information see chapter
«Application guidelines»
Fixing bezel
NJO
• For indicator 02-07x.00x can only filament lamps
be used (no LEDs)
• Take note of heat generating
Each article number listed below includes all the black
components shown in the 3D-drawing.
To obtain a complete unit, please select the red components from the pages shown.
Behind panel depth
Terminal
Part No.
Wiring
diagram
Mounting cut-outs [mm]
Weight
60 mm
Screw
02-021.001
1
0.030 kg
with built-in lamp series resistor, 240 VAC/DC to 48 V, 25 mA,
for filament lamp
84 mm
Screw
02-070.001
1
0.045 kg
with built-in lamp series resistor, 110 VAC/DC to 48 V, 25 mA,
for filament lamp
84 mm
Screw
02-071.001
1
0.045 kg
with built-in lamp series resistor, 125 VAC/DC to 48 V, 25 mA,
for filament lamp
84 mm
Screw
02-072.001
1
0.045 kg
with built-in lamp series resistor and diode, 240 VAC/DC to 48 V, 25 mA,
for filament lamp
84 mm
Screw
02-073.001
1
0.045 kg
Product attribute
Indicator actuator
without serie resistor, for LED or filament lamp
1
2
Wiring diagram 1
4
Indicator actuator
Flush design
02
Buzzer, IP 40
10 max.
Equipment consisting of (schematic overview)
Front bezel
37.6 x 23.5
page 13
Buzzer
75
7
Fixing bezel
84
Dimensions [mm]
Product can differ from the current configuration.
Each article number listed below includes all the black
components shown in the 3D-drawing.
Additional Information
NJO
To obtain a complete unit, please select the red components from the pages shown.
• For front dimension 24 x 36 mm
3NBY
NJO
• Further information in chapter «Technical Data»
Operating voltage
Front cap
Terminal
Part No.
Wiring
diagram
Mounting cut-outs [mm]
Weight
Pastic black
Screw
02-810.001
1
0.060 kg
Buzzer
10 ... 55 VAC, 10 ... 75 VDC
c
U1 = 30 - 55 VAC
35 - 75 VDC
U2 = 10 - 35 VAC
10 - 50 VDC
d
f
Continous
tone
g
c
f
Intermittent tone
approx. 3Hz
d
g
Volume control
e
h
e
h
Wiring diagram 1
5
02
Flush design
Pushbutton, IP 40
10 max.
37.6 x 23.5
Equipment consisting of (schematic overview)
Front bezel
page 13
Lens
page 11
75
7
84
Actuator
Product can differ from the current configuration.
Dimensions [mm]
Additional Information
Fixing bezel
NJO
• For front dimension 24 x 36 mm
3NBY
NJO
Each article number listed below includes all the black
components shown in the 3D-drawing.
To obtain a complete unit, please select the red components from the pages shown.
Contacts
Switching action
1C
2C
Terminal
Wiring
diagram
Mounting cut-outs [mm]
Part No.
A
Screw
02-611.011
1
0.045 kg
C
Screw
02-613.011
2
0.045 kg
A
Screw
02-612.011
3
0.050 kg
C
Screw
02-614.011
4
0.050 kg
B-C
Screw
02-615.011
5
0.050 kg
Contacts: C = Changeover
Switching action: B = Momentary, C = Maintain
d e
c
Wiring diagram 1
6
g
f
d e
h
c
Wiring diagram 2
Weight
Wiring diagram 3
g
f
e d
h
c
Wiring diagram 4
g
f
d e
h
c
Wiring diagram 5
g
f
h
Flush design
02
Illuminated pushbutton, IP 40
10 max.
Front bezel
page 13
Lens
page 11
LED
page 17
37.6 x 23.5
Equipment consisting of (schematic overview)
75
7
84
Dimensions [mm] [mm]
Product can differ from the current configuration.
Actuator
Additional Information
NJO
• For front dimension 24 x 36 mm
3NBY
Each article number listed below includes all the black
components shown in the 3D-drawing.
• For LED element fitting information see chapter
«Application guidelines»
NJO
Fixing bezel
To obtain a complete unit, please select the red components from the pages shown.
Contacts
Switching action
Terminal
Part No.
Wiring
diagram
Mounting cut-outs [mm]
Gewicht
Illuminated pushbutton actuator
1C
2C
B
Screw
02-616.011
1
0.050 kg
C
Screw
02-618.011
2
0.050 kg
B
Screw
02-617.011
3
0.055 kg
C
Screw
02-619.011
4
0.055 kg
B-C
Screw
02-620.011
5
0.055 kg
Contacts: C = Changeover
Switching action: B = Momentary, C = Maintain
d e
1
c
2
Wiring diagram 1
g
f
1
d e
h
2
c
Wiring diagram 2
d e
c
g
f
1
h
2
Wiring diagram 3
g
f
1
e d
h
2
c
g
f
1
h
2
Wiring diagram 4
Wiring diagram 5
7
02
Flush design
Mushroom-head pushbutton, IP 40
10 max.
Equipment consisting of (schematic overview)
37.6 x 23.5
Mushroom-head
page 11
cap
Front bezel
page 13
75
16
Product can differ from the current configuration.
84
Actuator
Dimensions [mm]
Additional Information
Fixing sleeve
NJO
• For front dimension 24 x 36 mm
3NBY
Each Part Number listed below includes all the black
components shown in the 3D-drawing.
NJO
• Use only flush front bezel
To obtain a complete unit, please select the red components from the pages shown.
Contacts
Switching action
Terminal
Wiring
diagram
Mounting cut-outs[mm]
Part No.
Mushroom-head pushbutton actuator
1C
2C
B
Screw
02-611.011
1
0.045 kg
C
Screw
02-613.011
2
0.045 kg
B
Screw
02-612.011
3
0.050 kg
C
Screw
02-614.011
4
0.050 kg
B-C
Screw
02-615.011
5
0.050 kg
Contacts: C = Changeover
Switching action: B = Momentary, C = Maintain
d e
c
Wiring diagram 1
8
Weight
g
f
d e
h
c
Wiring diagram 2
Wiring diagram 3
g
f
e d
h
c
Wiring diagram 4
g
f
d e
h
c
Wiring diagram 5
g
f
h
Flush design
02
Keylock switch 2 positions, IP 40
Equipment consisting of (schematic overview)
page 13
Keylock front
bezel
page 12
37.6 x 23.5
Front bezel
10 max.
26
10
75
Actuator
Dimensions [mm]
Product can differ from the current configuration.
Additional Information
Fixing bezel
NJO
• For front dimension 24 x 36 mm
3NBY
NJO
• Front plastic grey
Each article number listed below includes all the black
components shown in the 3D-drawing.
To obtain a complete unit, please select the red components from the pages shown.
• Keylock number YB1
• After turning the key 90° clockwise, the switch
can be operated
• In the unlocked switch positions always perform a
momentary action
• Two keys are supplied with each key lock switch
Mounting cut-outs [mm]
B
A
Product attribute
Contacts
Switching angle
Key remove
Terminal
Part No.
Wiring
diagram
Switching positions (A = Rest, B = Momentary)
Gewicht
Schlüsselschalter-Vorsatz 2 Stellungen
A = lockable, actuated
2C
B = 90°
A
Screw
02-690.011
1
0.055 kg
A = lockable, non-actuated or actuated
2C
B = 90°
A
Screw
02-692.011
1
0.055 kg
A = lockable, non-actuated
2C
B = 90°
A
Screw
02-691.011
1
0.055 kg
Contacts: C = Changeover
d e
c
g
f
h
Wiring diagram 1
9
02
Flush design
Keylock switch 2 positions, IP 40
Equipment consisting of (schematic overview)
10 max.
37.6 x 23.5
Front bezel
26
10
page 13
Keylock front
bezel
75
Actuator
Product can differ from the current configuration.
Dimensions [mm]
Additional Information
Fixing bezel
NJO
• For front dimension 24 x 36 mm
• Front plastic grey
• Keylock number YB1
NJO
3NBY
• After turning the key 90° clockwise, the switch
can be operated
• In the unlocked switch positions always perform a
momentary action
Each article number listed below includes all the black
components shown in the 3D-drawing.
To obtain a complete unit, please select the red components from the pages shown.
• Two keys are supplied with each key lock switch
Mounting cut-outs [mm]
B
A
Wiring
diagram
Switching positions (A = Rest, B = Momentary)
Gewicht
A = lockable, non-actuated, B = lockable,
key not removable
2C
B = 90°
A
Screw
02-695.011
1
0.055 kg
A = lockable, non-actuated or actuated; can be used
with protective cover Part No. 22-925
2C
B = 90°
A
Screw
02-198.011
1
0.055 kg
Product attribute
Contacts
d e
c
10
Key remove
Terminal
Part No.
Schlüsselschalter-Vorsatz 2 Stellungen
Contacts: C = Changeover
Wiring diagram 1
Switching angle
g
f
h
Accessories
02
Front
Lens
Additional Information
• Material plastic
Product attribute
Dimension
Lens
Part No.
Weight
Lens
illuminative, not suitable for film insert, ripped
17.5 x 25.4 mm
illuminative, use holder for film insert
17.5 x 25.4 mm
non-illuminative
17.5 x 25.4 mm
smoked translucent
02-901.1
0.004 kg
red translucent
02-901.2
0.004 kg
orange translucent
02-901.3
0.004 kg
yellow translucent
02-901.4
0.004 kg
green translucent
02-901.5
0.004 kg
blue translucent
02-901.6
0.004 kg
colourless transparent
02-901.7
0.004 kg
white translucent
02-901.9
0.004 kg
red translucent
02-902.2
0.004 kg
green translucent
02-902.5
0.004 kg
colourless transparent
02-902.7
0.004 kg
black opaque
02-901.0
0.004 kg
grey opaque
02-901.8
0.004 kg
Keylock front bezel
Additional Information
• Keylock number YB1
• Further lock numbers see «Technical data»
Product attribute
Dimension
Material
Colour
Part No.
Weight
17.5 x 25.5 mm
Plastic
grey
02-980.1
0.002 kg
17.5 x 25.5 mm
Plastic
grey
02-982.1
0.002 kg
Keylock front bezel
for keylock switch Part No. 02-695
11
02
Accessories
Holder
Additional Information
• For lens with film insert
Material
Colour
Optics
Part No.
Weight
red
translucent
02-908.2
0.001 kg
orange
translucent
02-908.3
0.001 kg
yellow
translucent
02-908.4
0.001 kg
green
translucent
02-908.5
0.001 kg
blue
translucent
02-908.6
0.001 kg
colourless
transparent
02-908.7
0.001 kg
white
translucent
02-908.9
0.001 kg
Holder
Plastic
Diffusor plate
Additional Information
• For lens with film insert
Part No.
Weight
Diffusor plate
02-909
0.001 kg
Front bezel flush
Additional Information
• Lens only removable with lens remover
Part No. 02-905
Front bezel
Pastic black
12
Part No.
Weight
02-965.0
0.001 kg
Front bezel flush, Front dimension 24 x 36 mm
Accessories
02
Front bezel raised
Additional Information
• Lens only removable with lens remover
Part No. 98-969
Front bezel
Part No.
Weight
02-967.0
0.001 kg
Front bezel raised, Front dimension 24 x 36 mm
Pastic black
Protective cover, IP 65
Additional Information
13.7
• Hinged, with means for sealing
29.7
• Use only flush front bezel
36.5
• Front panel thickness reduces by 2 mm
36
30
18
• Please note that bigger minimum distances are
necessary
2
10.5
Dimensions [mm]
Product attribute
Material
Optics
Dimension
Part No.
Weight
Plastic
transparent
36 x 29.7 mm
22-925
0.004 kg
Protective cover
for button with mounting cut-out 21.2 x 29.2 mm
13
02
Accessories
Spare key
Additional Information
• Keylock number YB1
Part No.
Weight
Spare key
02-989.001
0.001 kg
Front protective cap, IP 65
Additional Information
NJO
• Use only flush front bezel
42
30
NJO
3NBY
• Three-part
9.5
Dimensions [mm]
Material
Colour
PVC
14
Mounting cut-outs [mm]
Optics
Temperature
Part No.
Weight
transparent
-20 ... +60 °
02-924
0.005 kg
-25 ... +85 °
02-935
0.005 kg
Front protective cap
colourless
Accessories
02
Blind plug
NJO
NJO
3 NBY
Mounting cut-outs [mm]
Dimension
Material
24 x 36 mm
Colour
Part No.
Weight
Blind plug
Plastic
black
02-949.0
0.004 kg
grey
02-949.8
0.004 kg
15
02
Accessories
Backside
Terminal cover
Additional Information
• For all connection methods
• Not suitable for indicators with built-in series resistor with lamp
Part No.
Weight
02-929
16
Terminal cover
0.005 kg
Accessories
02
Illumination
Single-LED, T6.8
Additional Information
• For LED element fitting information see «Application guidelines»
• When using AC/DC types with AC operation,
slight flickering can occure
+
Ø 7.1 max.
• Due to high surface temperatures, the series
resistor must not be soldered directly to the terminals of the equipment (use a terminal plate)
45 max.
• Luminous intensity data of the LEDs on direct
voltage
• Electrical and optical data are measured at 25 °C
Dimensions [mm]
• The specified versions are built with a protection
diode (halve wave rectifier) in series and the LED
• Luminosity and wave length variations caused by
LED manufacturing processes may cause slight
differences regarding the illumination
• For supply voltages above 48 V, it is necessary to
use a voltage reduction element (external series
resistor or transformer)
LED colour
Operating voltage
Operation current
Lumi. intensity
Dom. wavelength
Part No.
Weight
6 VDC
17 mA ±15 %
400 mcd
630 nm
10-2K06.3152
0.002 kg
12 VAC/DC
9/17 mA ±15 %
400 mcd
630 nm
10-2K09.1072
0.002 kg
24 VAC/DC
9/17 mA ±15 %
400 mcd
630 nm
10-2K12.1072
0.002 kg
28 VAC/DC
9/17 mA ±15 %
400 mcd
630 nm
10-2K13.1072
0.002 kg
48 VAC/DC
4/8 mA ±15 %
200 mcd
630 nm
10-2K19.1052
0.002 kg
6 VDC
17 mA ±15 %
340 mcd
340 nm
10-2K06.3154
0.002 kg
12 VAC/DC
9/17 mA ±15 %
340 mcd
340 nm
10-2K09.1074
0.002 kg
24 VAC/DC
9/17 mA ±15 %
340 mcd
340 nm
10-2K12.1074
0.002 kg
28 VAC/DC
9/17 mA ±15 %
340 mcd
340 nm
10-2K13.1074
0.002 kg
48 VAC/DC
4/8 mA ±15 %
180 mcd
340 nm
10-2K19.1054
0.002 kg
6 VDC
7 mA ±15 %
1050 mcd
525 nm
10-2K06.3155
0.002 kg
12 VAC/DC
4/7 mA ±15 %
1050 mcd
525 nm
10-2K09.1075
0.002 kg
24 VAC/DC
4/7 mA ±15 %
1050 mcd
525 nm
10-2K12.1075
0.002 kg
28 VAC/DC
4/7 mA ±15 %
1050 mcd
525 nm
10-2K13.1075
0.002 kg
48 VAC/DC
2/4 mA ±15 %
600 mcd
525 nm
10-2K19.1055
0.002 kg
6 VDC
17 mA ±15 %
780 mcd
470 nm
10-2K06.3156
0.002 kg
12 VAC/DC
9/17 mA ±15 %
780 mcd
470 nm
10-2K09.1076
0.002 kg
24 VAC/DC
9/17 mA ±15 %
780 mcd
470 nm
10-2K12.1076
0.002 kg
28 VAC/DC
9/17 mA ±15 %
780 mcd
470 nm
10-2K13.1076
0.002 kg
48 VAC/DC
4/8 mA ±15 %
400 mcd
470 nm
10-2K19.1056
0.002 kg
Single-LED
red
yellow
green
blue
17
02
Accessories
LED colour
Operating voltage
Operation current
Lumi. intensity
Dom. wavelength
Part No.
Weight
white
6 VDC
6 mA ±15 %
900 mcd
x0.31/y0.32 nm
10-2K06.3159
0.002 kg
12 VAC/DC
3/6 mA ±15 %
900 mcd
x0.31/y0.32 nm
10-2K09.1079
0.002 kg
24 VAC/DC
3/6 mA ±15 %
900 mcd
x0.31/y0.32 nm
10-2K12.1079
0.002 kg
28 VAC/DC
2.5/5 mA ±15 %
750 mcd
x0.31/y0.32 nm
10-2K13.1079
0.002 kg
48 VAC/DC
2/4 mA ±15 %
600 mcd
x0.31/y0.32 nm
10-2K19.1059
0.002 kg
Part No.
Weight
Filament lamp, T6.8
Operating voltage
Operation current
Filament lamp
12 VAC/DC
50 mA ±10 %
10-1209.1279
0.001 kg
12 VAC/DC
100 mA ±10 %
10-1209.1329
0.001 kg
24 VAC/DC
25 mA ±10 %
10-1212.1199
0.001 kg
24 VAC/DC
50 mA ±10 %
10-1212.1279
0.001 kg
28 VAC/DC
40 mA ±10 %
10-1213.1249
0.001 kg
30 VAC/DC
40 mA ±10 %
10-1214.1249
0.001 kg
36 VAC/DC
35 mA ±10 %
10-1216.1229
0.001 kg
Resistance
Part No.
Weight
110 VAC
2.7 kOhm
02-904.0
0.003 kg
125 VAC
3.3 kOhm
02-904.1
0.003 kg
145 VAC
4.7 kOhm
02-904.3
0.003 kg
240 VAC
10 kOhm
02-904.7
0.003 kg
Series resistor
Additional Information
• For filament lamp 48 VAC, 25 mA
• For lamp voltage reduction
• Keep to the country specific safety instructions
• Due to high surface temperatures, the series
resistor must not be soldered directly to the terminals of the equipment (use a terminal plate)
Operating voltage
18
Series resistor
Accessories
02
Terminal plate empty
Additional Information
• For fitting with series resistors
Product attribute
Dimension
Part No.
Weight
Terminal plate empty
5 spaces
62.5 x 60 x 15 mm
02-912.1
0.025 kg
10 spaces
125 x 60 x 15 mm
02-912.2
0.045 kg
15 spaces
187.6 x 60 x 15 mm
02-912.3
0.090 kg
20 spaces
250 x 60 x 15 mm
02-912.4
0.095 kg
19
02
Accessories
Mounting
Lens remover
Product attribute
Weight
02-905
0.011 kg
98-968
0.004 kg
Lens remover
for flush front bezel
Part No.
Lens remover
for raised front bezel
Lamp remover
Additional Information
p
Vorsicht: A switching process might be released
when replacing the lamp
Product attribute
20
Weight
03-996
0.027 kg
61-9740.0
0.003 kg
Lamp remover
for LED
for filament lamp
Part No.
Lamp remover
Technical data
02
Actuator with snap-action switching element
Switching system
1 or 2 self-cleaning, snap-action switching elements.
1 or 2 double-throw contacts.
Material
Material of contact
Standard version:
Silver (U > 20 V)
Special versions: (on request)
Gold/Silver 700 Au/300 Ag (U < 50 V)
Silver/Palladium 700 Ag/300 Pd (U > 20 V) for atmospheres
containing sulphur
Conventional free air thermal current
10 A
The maximum current in continuous operation and at ambient
temperature not exceeding the quoted maximum values.
Switch rating
400 VAC, 10 A, cosφ 0.95, as per IEC 60947-5-1
250 VAC, 10 A, as per UL
Electric strength
2500 VAC, 50 Hz, 1 min. between all terminals and earth,
as per IEC 60947-5-1
Environmental conditions
Switch housing
Thermosetting material, heat-resistant
Storage temperature
-30 °C … +85 °C
Indicator housing with reduced length
Polyamide
Service temperature
-25 °C … +55 °C
For indicators and illuminated pushbuttons mounted as a block,
make sure the heat can escape freely.
Mechanical characteristics
Terminals
Screw terminal (with self-lifting clip):
max. wire cross-section, 2 x 2.5 mm²
max. wire cross-section of stranded cable, 2 x 1.5 mm²
Protection degree
Front side IP 40, IP 65 with spray cover, as per IEC 60529
Shock resistance
15 g for 11 ms, as per IEC 60068-2-27
Tightening torque
For fixing sleeve max. 20 Ncm
For screw terminal max. 80 Ncm
Vibration resistance
10 g at 10 … 2000 Hz, amplitude 1.0 mm, as per IEC 60068-2-6
Actuating force
6 N … 12 N
Approvals
Actuating travel
5 mm
Mechanical lifetime
Momentary action 2 million operations
Maintained action 1 million operations
Approbations
CB (IEC 60947-5-1)
CSA
Germanischer Lloyd
UL
Declaration of conformity
CE
Electrical characteristics
Standards
The switches comply with the “Standards for low-voltage
switching devices” IEC 60947-5-1
Rated insulation voltage
400 VAC/440 VDC, as per IEC 60947-5-1
21
02
Technical data
Buzzer
Buzzer system
System
Electronic non-contacting buzzer with IC oscillator
Material
Buzzer case
Thermosetting material
Front cap
Polycarbonate (PC)
Operation Voltage/Current
typical
10 … 55 VAC 10 … 75 VDC
25 mA
15 mA
Environmental conditions
Storage temperature
-40 °C … +85 °C
Operating temperature
-25 °C … +55 °C
Protection degree
Front side IP 40, as per IEC 60529
Front bezel
Polymethylacrylate
Approvals
Mechanical characteristics
Terminals
Screw terminal
Tightening torque
For fixing sleeve max. 20 Ncm
For screw terminal max. 80 Ncm
Electrical characteristics
Frequency (tone)
Approx. 2.8 kHz
Sound pressure
85 dB (A) ±8 dB at a distance of 0.1 m
Volume variable with a MΩ potentiometer or corresponding fixed
resistor
EAO reserves the right to alter specifications without further
notice.
22
Approbations
CB (IEC 60947-5-1)
Declaration of conformity
CE
Marking
02
General notes
1. Engraving
In addition to the most commonly used world languages, in
DIN1451-3 close spacing, other typefaces are available as
Scandinavian, Slavic, Greek, Russian and Polish. Red, blue and
black lenses are filled with white colour. Other colour lenses
are filled in black. Standard height of letters is 3 mm. If the height
is not specified, we will supply 3 mm engraved letters.
3. Film inserts
Instead of using engraving the lenses can be fitted with transparent film inserts, as an alternative. For this purpose, though, it
is advisible to use lenses without ripped pattern. In the case of
use of a smoke-black lens the fitted film becomes readable only
if the lamp is on. The film (F) is inserted in the cap. To ensure
even illumination a diffusor (D) is recommended, which is inserted
beneath the film. If, on the other hand, the diffusor is inserted
2. Hot stamping
above the film, the lettering only becomes legible when the lamp
For larger series it is worth considering markings by means of hot is alight. To hold the film and diffusor in position, the use of a
stamping. We will pleased to advise you. For letters and figures, holder (N) is advised. The film thickness is 0.2 mm.
typefaces with 2.5 mm, 3 mm and 4 mm are available.
All dimensions in mm
Number of
small letters per line
(target value)
Image
Film insert max. size
Height of letters h
Number of lines
Number of
capital letters per line
(target value)
14.3 x 22.4
3
4
11
13
B1
7–8
8–9
B2
4
2
7
9
B1
4
5
5–6
B2
2
5–6
6–7
B1
3
3–4
4
B2
1
5
6
B1
2
3
4
B2
1
3
4
B1
2
2
B2
6
8
F
D
B1
B2
ABC
abc
ABC
abc
h
5
N
23
02
Application guidelines
Suppressor circuits
When switching inductive loads such as relays, DC motors, and
DC solenoids, it is always important to absorb surges (e. g. with a
diode) to protect the contacts. When these inductive loads are
switched off, a counter emf can severely damage switch contacts
and greatly shorten lifetime.
Fig. 1 shows an inductive load with a free-wheeling diode connected in parallel. This free-wheeling diode provides a path for the
inductor current to flow when the current is interrupted by the
switch. Without this free-wheeling diode, the voltage across the
coil will be limited only by dielectric breakdown voltages of the
circuit or parasitic elements of the coil. This voltage can be kilovolts in amplitude even when nominal circuit voltages are low
(e. g. 12 VDC) see Fig. 2.
The free-wheeling diode should be chosen so that the reverse
breakdown voltage is greater than the voltage driving the inductive load. The DC blocking voltage (VR) of the free-wheeling diode
can be found in the datasheet of a diode. The forward current
should be equal or greater than the maximum current flowing
through the load.
To get an efficient protection, the free-wheeling diode must
be connected as close as possible to the inductive load!
Counter EMF
over load without free-wheeling diode
Fig. 2
Switching with inductive load
Fig. 1
Switch
ON
OFF
0
VDC
+
_
Free-wheeling
diode
Inductive
load
Several hundred
to several
thousend volts
LED polarity
When fitting the LED element the polarity has to correspond with
the respective terminal, (+) goes to +.
1
24
(+)
2
+
di
__
e = L dt
02
Index
Index from Part No.
Part No.
Page
02-021.001................. 4
02-070.001................. 4
02-071.001................. 4
02-072.001................. 4
02-073.001................. 4
02-198.011............... 10
02-611.011................. 6
02-611.011................. 8
02-612.011................. 6
02-612.011................. 8
02-613.011................. 6
02-613.011................. 8
02-614.011................. 6
02-614.011................. 8
02-615.011................. 6
02-615.011................. 8
02-616.011................. 7
02-617.011................. 7
02-618.011................. 7
02-619.011................. 7
02-620.011................. 7
02-690.011................. 9
02-691.011................. 9
02-692.011................. 9
02-695.011............... 10
02-810.001................. 5
02-901.0................... 11
02-901.1................... 11
02-901.2................... 11
02-901.3................... 11
02-901.4................... 11
02-901.5................... 11
02-901.6................... 11
02-901.7................... 11
02-901.8................... 11
02-901.9................... 11
02-902.2................... 11
02-902.5................... 11
02-902.7................... 11
02-904.0................... 18
02-904.1................... 18
02-904.3................... 18
02-904.7................... 18
02-905...................... 20
02-908.2................... 12
02-908.3................... 12
02-908.4................... 12
02-908.5................... 12
02-908.6................... 12
02-908.7................... 12
02-908.9................... 12
02-909...................... 12
02-912.1................... 19
02-912.2................... 19
02-912.3................... 19
02-912.4................... 19
02-924...................... 14
02-929...................... 16
02-935...................... 14
02-949.0................... 15
02-949.8................... 15
02-965.0................... 13
02-967.0................... 13
02-980.1................... 12
02-989.001............... 14
03-996...................... 20
10-1209.1279........... 18
10-1209.1329........... 18
10-1212.1199........... 18
10-1212.1279........... 18
10-1213.1249........... 18
10-1214.1249........... 18
10-1216.1229........... 18
10-2K06.3152........... 17
10-2K06.3154........... 17
10-2K06.3155........... 17
10-2K06.3156........... 17
Part No.
Page
10-2K06.3159........... 18
10-2K09.1072........... 17
10-2K09.1074........... 17
10-2K09.1075........... 17
10-2K09.1076........... 17
10-2K09.1079........... 18
10-2K12.1072........... 17
10-2K12.1074........... 17
10-2K12.1075........... 17
10-2K12.1076........... 17
10-2K12.1079........... 18
10-2K13.1072........... 17
10-2K13.1074........... 17
10-2K13.1075........... 17
10-2K13.1076........... 17
10-2K13.1079........... 18
10-2K19.1052........... 17
10-2K19.1054........... 17
10-2K19.1055........... 17
10-2K19.1056........... 17
10-2K19.1059........... 18
22-925...................... 13
61-9740.0................. 20
98-968...................... 20
25