Hans Turck GmbH & Co.KG • Postfach • D-45466 Mülheim an der Ruhr • Telefon 02 08/49 52-0 • Telefax 02 08/49 52-264
Subject to change without notice • © Hans Turck GmbH & Co.KG 2002 • Edition: • 12.04.2004
Subject to change without notice • © Hans Turck GmbH & Co.KG 2002 • Edition:
Hans Turck GmbH & Co.KG • Postfach • D-45466 Mülheim an der Ruhr • Telefon 02 08/49 52-0 • Telefax 02 08/49 52-264
Photoelectric sensor
receiver
SM31RQD
●compact housing style
●Reverse polarity and short-circuit
protection
●connector M12 x 1
●light/dark operate
●sensitivity adjustable via potentio-
meter
●alignment indication
Wiring diagram
Opposed mode sensors consist of a sepa-
rate emitter and receiver. These are instal-
led directly opposite each other so that the
light from the emitter is aimed directly at the
receiver. When an object interrupts or wea-
kens the light beam, the sensor switches.
Opposed mode sensors are the most relia-
ble photoelectric sensors for detection of
opaque targets. An excellent contrast bet-
ween light and dark conditions and an ex-
tremly high excess gain are typical of this
sensing mode, thus allowing operation
over larger distances and under difficult
conditions.
Excess gain curve
Excess gain in relation to the distance
BN (1)
WH (2)
BK (4)
BU (3)
+
E/R EL/RL
100
10
1
0,1 1 10 100 m
Type SM31RQD
Ident-No. 3026839
Operating mode Opposed mode (receiver)
Operating temperature -20 ...+ 70 °C
Rated operational voltage (DC) UB10... 30 VDC
Rated operational current (DC) Ie≤ 150 mA
No-load current I0≤ 25 mA
Short-circuit protection yes, cyclic
Reverse polarity protection yes
Output function normally open, PNP/NPN
Switching frequency ≤ 500 Hz
Max. switch-on delay ≤ 100 ms
Overload trip point >220 mA
Housing style rectangular; Mini Beam
Dimensions 71,3 x 12,3 x 30,7 mm
Housing material plastic, PBT
Lens Kunststoff, Acryl
Wiring connector, M12 x 1
Degree of protection IP67
Switching status indication LED red
Excess gain indication LED red flashing
LED RD/
Pot.
26
ø 3
8
M18 x 1
24,1
53,3
M12 x 1
30,7
18
12,3
24/8
