Diode 1. Diode applications 2 Diode symbols 3 I-V characteristic 4.
Leuze PRK 3B Retro-Reflective Photoelectric Sensors · Dimensioned drawing A Green indicator diode...
Transcript of Leuze PRK 3B Retro-Reflective Photoelectric Sensors · Dimensioned drawing A Green indicator diode...
We
rese
rve
the
right
to
mak
e ch
ange
s •
DS
_PR
K3B
_Sta
ndar
d_E
L_en
.fm
Polarized retro-reflective photoelectric sen-sor, autocollimation optics with visible redlight
For precise positioning of objects andreflector markers
Small and compact construction withrobust plastic housing, protection classIP 67 for industrial application
A2LS- Active Ambient Light Suppression Push-pull output with light/dark switching
via teach-in button High switching frequency for detection of
fast events Easy adjustment via lockable teach button
or teach input
0 … 5m1 kHz
10 - 30 V
DCA2
LS
Accessories:(available separately)
Mounting systems (BT 3…) Cable with M8 or M12 connector (K-D …) Reflectors Reflective tapes
UL USC
LISTED
IEC 60947... IEC 60947... IP 67
Dimensioned drawing
A Green indicator diodeB Yellow indicator diodeC Optical axisD Teach buttonE Attachment sleeve
Electrical connection
Plug connection, 4-pin
Plug connection, 3-pin
Cable, 4-wire
PRK 3B Retro-reflective photoelectric sensors with polarization filter
en10
-201
1/04
5010
5364
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
SpecificationsOptical dataTyp. op. range limit (TK(S) 100x100) 1)
1) Typ. operating range limit: max. attainable range without performance reserve
0 … 5mOperating range 2)
2) Operating range: recommended range with performance reserve
see tablesLight source 3)
3) Average life expectancy 100,000h at an ambient temperature of 25°C
LED (modulated light)Wavelength 620nm (visible red light, polarized)
TimingSwitching frequency 1,000HzResponse time 0.5msDelay before start-up ≤ 300ms
Electrical dataOperating voltage UB 4)
4) For UL applications: for use in class 2 circuits according to NEC only
10 … 30VDC (incl. residual ripple) Residual ripple ≤ 15% of UBOpen-circuit current ≤ 18mASwitching output 5) …/6.22
5) The push-pull switching outputs must not be connected in parallel
1 push-pull switching outputpin 4: PNP light switching, NPN dark switchingpin 2: teach input
…/6D.22 1 push-pull switching outputpin 4: PNP dark switching, NPN light switchingpin 2: teach input
…/6.22…-S8.3 1 push-pull switching outputpin 4: PNP light switching, NPN dark switching
…/4D.22 1 PNP switching output, dark switching,pin 2: teach input
Function characteristics light/dark reversibleSignal voltage high/low ≥ (UB-2V)/≤ 2VOutput current max. 100mAOperating range setting via teach-in
IndicatorsGreen LED readyYellow LED light path freeYellow LED, flashing light path free, no performance reserve 6)
6) Display "no performance reserve" as yellow flashing LED is only available in standard teach setting
Mechanical data Housing 7)
7) Patent Pending Publ. No. US 7,476,848 B2
plastic (PC-ABS); 1 attachment sleeve, nickel-plated steelOptics cover plastic (PMMA)Weight with connector: 10g
with 200mm cable and connector: 20gwith 2m cable: 50g
Connection type 2m cable (cross section 4x0.20mm²), connector M8 metal, 0.2m cable with connector M8 or M12
Environmental dataAmbient temp. (operation/storage) -30°C … +55°C/-30°C … +70°CProtective circuit 8)
8) 2=polarity reversal protection, 3=short-circuit protection for all transistor outputs
2, 3 VDE safety class IIIProtection class IP 67Light source free group (in accordance with EN 62471)Standards applied IEC 60947-5-2Certifications UL 508 4)
OptionsTeach-in input/activation inputTransmitter active/not active ≥ 8V/≤ 2VActivation/disable delay ≤ 1msInput resistance 30kΩ
RemarksAdapter plate: BT 3.2 (part no. 50103844) for alternate mounting on 25.4mm hole spacing
(Omron E3Z, Sick W100…)
Tables
TK … = adhesiveTKS … = screw type
Reflectors Operating range
1 TK(S) 100x100 0 … 4.0m2 TK 40x60 0 … 2.6m3 TK 20x40 0 … 1.3m4 Tape 4 50x50 0 … 0.7m
1 0 4 52 0 2,6 3,23 0 1,3 1,54 0 0,7 1,0
Operating range [m]Typ. operating range limit [m]
Diagrams
A TK 100x100B TKS 40x60C TKS 20x40D Tape 4: 50x50
-40
-20-30
-100
10203040
0 1 2 3 4 5 6
y1
y2
Distance x [m]
Mis
alig
nmen
t y [m
m]
Typ. response behavior
y2
x
y1
0 1 2 3 4 5 605
101520253035404550
A BCD
Distance x [m]
Perfo
rman
ce re
serv
e
Typ. performance reserve
RemarksMounting system:
� = BT 3 (part no. 50060511)
�+� = BT 3.1 1)
(part no. 50105585)
�+�+� = BT 3B (part no. 50105546)
1) Packaging unit: PU = 10 pcs.
� � �
PRK 3B
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
Order guide
Approved purpose:This product may only be used by qualified personnel and must only be used for the approved purpose. This sensor is not asafety sensor and is not to be used for the protection of persons.
Sensor adjustment (teach) via teach button
Selection table
Order code
Equipment PR
K3B
/6.2
2P
art
No.
501
0469
9
PR
K3B
/6.2
2-S
8P
art
No.
501
0470
0
PR
K3B
/6.2
2, 2
00-S
8P
art
No.
501
0470
1
PR
K3B
/6.2
2, 2
00-S
12P
art
No.
501
0576
2
PR
K3B
/6D
.22-
S8
Par
t N
o. 5
0106
418
PR
K3B
/6.2
-S8.
3P
art
No.
501
0938
5
PR
K3B
/6.2
,200
-S8.
3P
art
No.
501
1409
9
PR
K 3
B/6
D.2
2.03
, 200
-S12
Par
t N
o. 5
0109
488
PR
K 3
B/4
D.2
2, 2
00-S
8P
art
No.
501
1077
5
PR
K 3
B/4
D.2
2Z, 2
00-S
8P
art
No.
501
0837
3
Output 1(OUT 1)
push-pull switching output, configurable
light switching 1)
1) Presetting, light/dark switching, adjustable
1) 1) 1) 1) 1) dark switching 1) 1)
PNP transistor outputlight switchingdark switching 1) 1)
start-up delay (special function) 2)
2) Start-up delay (special function)The sensor output does not switch until an object has interrupted the light beam for at least 4 seconds. The output switches off without a time delay.
Input(IN)
teach input activation input
Connection cable 2,000mm 4-wire M8 connector, metal 3-pin M8 connector, metal 4-pin 200mm cable with M8 connector 3-pin 200mm cable with M8 connector 4-pin 200mm cable with M12 connector 4-pin 3)
3) Connector without Ultra-Lock™ fast locking
Configuration teach-in via button (lockable) and teach input teach-in via button
The sensor is factory-adjusted for maximum operat-ing range. Recommendation: teach only if the desired objects are not reliably detected.
Prior to teaching:Clear the light path to the reflector!The device setting is stored in a fail-safe way. A reconfiguration following voltage interruption or switch-off is thus not required.
4 s t
Out 1
Light beam interrupted
Light beam free
Special function: start-up delay, only for PRK 3B/4D.22Z, 200-S8
PRK 3B Retro-reflective photoelectric sensors with polarization filter
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
Standard teaching for average sensor sensitivity
Press teach button until both LEDs flashsimultaneously.
Release teach button. Ready.
After the standard teaching, the sensor switches when half of the light beam is covered by the object.
Teaching for increased sensor sensitivity
Press teach button until both LEDs flashalternatingly.
Release teach button. Ready.
After the teaching for increased sensor sensitivity, the sensor switches when about 18% of the light beam are covered by the object.
Teaching for maximum operating range (factory setting at delivery)
Prior to teaching:Cover the light path to the reflector!
Procedure as for standard teaching.
2 … 7ssimultaneously
flashing at3Hz
LEDgreen
LED yellow
7 … 12salternatingly
flashing at3Hz
LEDgreen
LED yellow
2 … 7ssimultaneously
flashing at3Hz
LEDgreen
LED yellow
PRK 3B
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
Adjusting the switching behavior of the switching output – light/dark switching
Press teach button until the green LED flashes. The yellow LED displays the current setting ofthe switching output:ON = output switches on lightOFF = output switches on dark
Continue to press the teach button in order tochange the switching behavior.
Release teach button. Ready.
Locking the teach button via the teach input
A static high signal (≥ 4ms) at the teach input locks the teach button on the device if required, such that no manual operation is possible (e.g., protection from erroneous operation or manipulation).
If the teach input is not connected or if there is a static low signal, the button is unlocked and can be operated freely.
Sensor adjustment (teach) via teach input
The following description applies to PNP switching logic!
UTeach low ≤ 2V
UTeach high ≥ (UB-2V)
Prior to teaching: Clear the light path to the reflector!
The device setting is stored in a fail-safe way. A reconfiguration following voltage interruption or switch-off is thus not required.
Standard teaching for average sensor sensitivity
> 12s
LEDgreen
flashes at3Hz
LED yellow
ON =light switching
OFF =dark switching
UTeach low
tTeach14 ... 1000 ms
t
UTeach high
Aft
er th
e d
elay
bef
ore
star
t-up
(≤
300
ms)
has
ela
pse
d, th
e te
ach
but
ton
on th
e d
evic
e ca
n b
e op
erat
ed.
The
teac
h b
utto
n is
dis
able
d
afte
r th
e 1s
t ed
ge.
Sta
ndar
d t
each
: t T
each
1 =
4…
1,00
0m
s
Aft
er a
bou
t 4
ms,
the
cur
rent
te
ach
valu
e is
ap
plie
d,
teac
h p
roce
ss c
omp
lete
d.
The
but
ton
rem
ains
dis
able
d
until
the
nex
t si
gnal
cha
nge.
Teac
h b
utto
n m
ay n
ow b
e op
erat
ed a
gain
.
PRK 3B Retro-reflective photoelectric sensors with polarization filter
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
Quick standard teach
After the standard teaching, the sensor switches when half of the light beam is covered by the object.
Teaching for increased sensor sensitivity
After the teaching for increased sensor sensitivity, the sensor switches when about 18% of the light beam are cov-ered by the object.
Adjusting the switching behavior of the switching output – light/dark switching
UTeach low
4 ms
t
UTeach high
4 ms 4 ms
shortest teaching duration forstandard teaching: approx. 12ms
UTeach low
tTeach21000 ... 2000 ms
t
UTeach high
Aft
er th
e d
elay
bef
ore
star
t-up
(≤
300
ms)
has
ela
psed
, the
te
ach
but
ton
on th
e d
evic
e ca
n b
e op
erat
ed.
The
teac
h b
utto
n is
dis
able
d
afte
r th
e 1s
t ed
ge.
Teac
h fo
r in
crea
sed
sen
sor
sens
itiv
ity:
t T
each
2 =
1,00
0…
2,00
0m
s
Aft
er a
bou
t 4
ms,
the
cur
rent
te
ach
valu
e is
ap
plie
d,
teac
h p
roce
ss c
omp
lete
d.
The
but
ton
rem
ains
dis
able
d
until
the
nex
t si
gnal
cha
nge.
Teac
h b
utto
n m
ay n
ow b
e op
erat
ed a
gain
.
UTeach low
tTeach Output2000 ... 3000 ms
tp light4 ... 1000 ms
t
UTeach high
Aft
er t
he d
elay
bef
ore
star
t-up
(≤
300
ms)
has
ela
pse
d, t
he te
ach
but
ton
on t
he d
evic
e ca
n b
e op
er-
ated
.
The
teac
h b
utto
n is
dis
able
d a
fter
th
e 1s
t ed
ge.
Set
ting
the
swit
chin
g b
ehav
ior
of
the
swit
chin
g o
utp
ut:
t Tea
ch O
utp
ut =
2,0
00…
3,00
0m
s
Sw
itch
ing
out
put
sw
itch
es o
n lig
ht:
t p li
ght
= 4
…1,
000
ms
Sw
itch
ing
out
put
sw
itch
es o
n d
ark:
t p
dar
k =
1,0
00…
2,00
0m
s
The
but
ton
rem
ains
dis
able
d u
ntil
the
next
sig
nal c
hang
e.
UTeach low
tTeach Output2000 ... 3000 ms
tp dark1000 ... 2000 ms
t
UTeach high
PRK 3B
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
We
rese
rve
the
right
to
mak
e ch
ange
s •
DS
_PR
K3B
42_e
n_50
1034
61.fm
Polarized retro-reflective photoelectricsensor, autocollimation optics with visiblered light
Particularly suited for highly transparentbottles (PET and glass)
Small and compact construction withrobust plastic housing, protection classIP 67 for industrial application
Push-pull output with light/dark switchingvia teach-in button
High switching frequency for detection offast events
Easy adjustment via lockable teach buttonor teach input
0 … 3.5m1 kHz
10 - 30 V
DC
Accessories:(available separately)
Mounting systems (BT 3…) Cables with M8 or M12 connector (K-D …) Reflectors Reflective tapes
IP 67
IEC 60947... IEC 60947...
Dimensioned drawing
A Green indicator diodeB Yellow indicator diodeC Optical axisD Teach buttonE Mounting sleeve
Electrical connection
Plug connector, 4-pin
Plug connector, 3-pin
Cable, 4-wire
PRK 3B Retro-reflective photoelectric sensors with polarization filter for bottles
en05
-201
3/08
5010
3461
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
SpecificationsOptical dataTyp. operating range limit (TK(S) 100x100) 1)
1) Typ. operating range limit: max. attainable range without performance reserve
0 … 3.5mOperating range 2)
2) Operating range: recommended range with performance reserve
see tablesLight source 3)
3) Average life expectancy 100,000h at an ambient temperature of 25°C
LED (modulated light)Wavelength 620nm (visible red light, polarized)
TimingSwitching frequency 1,000HzResponse time 0.5msDelay before start-up ≤ 300ms
Electrical dataOperating voltage UB 4)
4) For UL applications: for use in class 2 circuits according to NEC only
10 … 30VDC (incl. residual ripple) Residual ripple ≤ 15% of UBOpen-circuit current ≤ 18mASwitching output 5) …/6.42
5) The push-pull switching outputs must not be connected in parallel
1 push-pull switching outputpin 4: PNP light switching, NPN dark switchingpin 2: teach input
…/6D.42 1 push-pull switching outputpin 4: PNP dark switching, NPN light switchingpin 2: teach input
…/6.42…-S8.3 1 push-pull switching outputpin 4: PNP light switching, NPN dark switching
…/4D.42 1 PNP switching output, dark switching,pin 2: teach input
Function characteristics light/dark reversibleSignal voltage high/low ≥ (UB-2V)/≤ 2VOutput current max. 100mAOperating range setting via teach-in
IndicatorsGreen LED readyYellow LED light path free
Mechanical data Housing 6)
6) Patent Pending Publ. No. US 7,476,848 B2
plastic (PC-ABS); 1 attachment sleeve, nickel-plated steelOptics cover plastic (PMMA)Weight with connector: 10g
with 200mm cable and connector: 20gwith 2m cable: 50g
Connection type 2m or 5m cable (cross section 4x0.20mm²), connector M8 metal, 0.2m cable with connector M8 or M12
Environmental dataAmbient temp. (operation/storage) -30°C … +55°C/-30°C … +70°CProtective circuit 7)
7) 2=polarity reversal protection, 3=short circuit protection for all transistor outputs
2, 3 VDE safety class IIIProtection class IP 67Light source fee group (in acc. with EN 62471)Standards applied IEC 60947-5-2Certifications UL 508 4)
OptionsTeach-in input/activation inputTransmitter active/not active ≥ 8V/≤ 2VActivation/disable delay ≤ 1msInput resistance 30kΩ
Remarks The light spot may not exceed the reflector. Preferably use MTK(S) or tape 6. For foil 6, the sensor's side edge must be aligned parallel to the side edge of the reflective
tape. Adapter plate: BT 3.2 (part no. 50103844) for alternate mounting on 25.4mm hole spacing
(Omron E3Z, Sick W100…)
Tables
TK … = adhesiveTKS … = screw type
Reflectors Operating range
1 TK(S) 100x100 0 … 3.0m2 TK 40x60 0 … 2.0m3 MTKS 50x50.1 0 … 1.3m4 Tape 6 50x50 0 … 1.2m5 TK 20x40 0 … 1.0m
1 0 3 3.62 0 2.0 2.43 0 1.3 1.64 0 1.2 1.45 0 1.0 1.2
Operating range [m]Typ. operating range limit [m]
Diagrams
A TKS 40x60B TKS 20x40C Tape 4: 50x50
-40
-20-30
-100
10203040
0 0,5 1,5 2,0 2,5 3,0 3,51,0
y1
y2
Distance x [m]
Mis
alig
nmen
t y [m
m]
Typ. response behavior
y2
x
y1
0 0,5 1,0 1,5 2,0 3,0 3,50
5
10
15
20
25
30
2,5
A BC
Distance x [m]
Perfo
rman
ce re
serv
e
Typ. performance reserve
RemarksMounting system:
� = BT 3 (part no. 50060511)
�+� = BT 3.1 1)
(part no. 50105585)
�+�+� = BT 3B (part no. 50105546)
1) Packaging unit: PU = 10 pcs.
� � �
PRK 3B
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
Order guide
Approved purpose:This product may only be used by qualified personnel and must only be used for the approved purpose. This sensor is not asafety sensor and is not to be used for the protection of persons.
Sensor adjustment (teach) via teach button
Teach for 11% sensor sensitivity (highly transparent bottles and foils with thickness > 20μm)
Press teach button until both LEDs flashsimultaneously.
Release teach button. Ready.
After the teaching, the sensor switches when about 11% of the light beam are covered by the object.
Selection table
Order code
Equipment
PR
K3B
/6.4
2-S
8P
art
No.
501
1247
3
PR
K3B
/6.4
2, 2
00-S
12on
req
uest
PR
K3B
/6D
.42-
S8
Par
t N
o. 5
0112
474
PR
K3B
/6D
.42,
200
-S12
on r
eque
st
PR
K3B
/6.4
2on
req
uest
PR
K3B
/6.4
2, 5
000
Par
t N
o. 5
0114
873
Switching output 1 x push-pull switching output Switching function light switching
dark switching light/dark switching configurable
Connection M8 connector, metal, 4-pin M8 connector, metal, 3-pincable 200mm with M12 connector, 4-pin 2000mm cable, 4-wire cable 5000mm, 4-wire
Configuration teach-in via button (lockable) and teach input 1)
1) Teach input not present with 3-pin connector
Indicators green LED: ready + teach sequence
yellow LED: switching output Detection foils < 20μm thick
foils > 20μm thick bottles (PET and glass)
The sensor is factory-adjusted for maximumoperating range. Recommendation: teach only if the desired objects are not reliably detected.
Prior to teaching:Clear the light path to the reflector!The device setting is stored in a fail-safe way. A reconfiguration following voltage interruption or switch-off is thus not required.
2 … 7ssimultaneously
flashing at3Hz
LEDgreen
LED yellow
PRK 3B Retro-reflective photoelectric sensors with polarization filter for bottles
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
Teach for 18% sensor sensitivity (standard bottles)
Press teach button until both LEDs flashalternatingly.
Release teach button. Ready.
After the teaching, the sensor switches when about 18% of the light beam are covered by the object.
Teaching for maximum operating range (factory setting at delivery)
Prior to teaching:Cover the light path to the reflector!
Press teach button until both LEDs flashsimultaneously.
Release teach button. Ready.
Adjusting the switching behavior of the switching output – light/dark switching
Press teach button until the green LED flashes. The yellow LED displays the current setting ofthe switching output:ON = output switches on lightOFF = output switches on dark
Continue to press the teach button in order tochange the switching behavior.
Release teach button. Ready.
7 … 12salternatingly
flashing at3Hz
LEDgreen
LED yellow
2 … 7ssimultaneously
flashing at3Hz
LEDgreen
LED yellow
> 12s
LEDgreen
flashes at3Hz
Yellow LED
ON =light switching
OFF =dark switching
PRK 3B
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
Locking the teach button via the teach input
A static HIGH signal (≥ 4ms) at the teach input locks the teach button on the device if required, such that no manual operation is possible (e.g., protection from erroneous operation or manipulation).
If the teach input is not connected or if there is a static low signal, the button is unlocked and can be operated freely.
Sensor adjustment (teach) via teach input
The following description applies to PNP switching logic!
UTeach low ≤ 2V
UTeach high ≥ (UB-2V)
Prior to teaching: Clear the light path to the reflector!
The device setting is stored in a fail-safe way. A reconfiguration following voltage interruption or switch-off is thus not required.
Teach for 11% sensor sensitivity(highly transparent bottles and foils with thickness > 20μm)
After the teaching, the sensor switches when about 11% of the light beam are covered by the object.
UTeach low
tTeach14 ... 1000 ms
t
UTeach high
UTeach low
4 ms
t
UTeach high
4 ms 4 ms
Quick teach for 11% sensor sensitivity (highly transparent bottles and foils with thickness > 20μm)
Aft
er t
he d
elay
bef
ore
star
t-up
(≤
300
ms)
has
ela
pse
d, t
he
teac
h bu
tton
on
the
devi
ce c
an
be
oper
ated
.
The
teac
h b
utto
n is
dis
able
d a
f-te
r th
e 1s
t ed
ge.
Sta
ndar
d t
each
: t T
each
1 =
4…
1000
ms
Aft
er a
bou
t 4
ms,
the
cur
rent
te
ach
valu
e is
ap
plie
d,
teac
h pr
oces
s co
mp
lete
d.Th
e b
utto
n re
mai
ns d
isab
led
un
til t
he n
ext
sign
al c
hang
e.
Teac
h b
utto
n m
ay n
ow b
e op
er-
ated
aga
in.
Shortest teaching duration for this teaching: approx. 12ms
PRK 3B Retro-reflective photoelectric sensors with polarization filter for bottles
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]
Teach for 18% sensor sensitivity (standard bottles)
After the teaching, the sensor switches when about 18% of the light beam are covered by the object.
Adjusting the switching behavior of the switching output – light/dark switching
UTeach low
tTeach21000 ... 2000 ms
t
UTeach high
Aft
er t
he d
elay
bef
ore
star
t-up
(≤
300
ms)
has
ela
psed
, the
te
ach
but
ton
on th
e d
evic
e ca
n b
e op
erat
ed.
The
teac
h b
utto
n is
dis
able
d
afte
r th
e 1s
t ed
ge.
Teac
h fo
r in
crea
sed
sen
sor
sens
itiv
ity:
t T
each
2 =
1000
…20
00m
s
Aft
er a
bou
t 4
ms,
the
cur
rent
te
ach
valu
e is
ap
plie
d,
teac
h p
roce
ss c
omp
lete
d.
The
but
ton
rem
ains
dis
able
d
until
the
nex
t si
gnal
cha
nge.
Teac
h b
utto
n m
ay n
ow b
e op
erat
ed a
gain
.
UTeach low
tTeach Output2000 ... 3000 ms
tp light4 ... 1000 ms
t
UTeach high
Aft
er t
he d
elay
bef
ore
star
t-up
(≤
300
ms)
has
ela
psed
, the
tea
ch
but
ton
on th
e d
evic
e ca
n b
e op
er-
ated
.
The
teac
h b
utto
n is
dis
able
d a
fter
th
e 1s
t ed
ge.
Set
ting
the
swit
chin
g b
ehav
ior
of
the
swit
chin
g o
utp
ut:
t Tea
ch O
utp
ut =
200
0…
3000
ms
Sw
itch
ing
out
put
sw
itch
es o
n lig
ht:
t p li
gh
t = 4
…10
00m
s
Sw
itch
ing
out
put
sw
itch
es o
n d
ark:
t p
dar
k =
100
0…
2000
ms
The
but
ton
rem
ains
dis
able
d u
ntil
the
next
sig
nal c
hang
e.
UTeach low
tTeach Output2000 ... 3000 ms
tp dark1000 ... 2000 ms
t
UTeach high
PRK 3B
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