Leuze electronic MLC 500 - Dimensions, weight, response time

Technical data
Leuze electronic MLC 520 Host/Guest 55
Weight see chapter 14.2 "Dimensions, weight, response
time"
Tab.14.4: System data - transmitter
Light source LED; exempt group in acc. with IEC62471
Wavelength 940 nm
Pulse duration 800 ns
Pulse pause 1.9µs (min.)
Mean power <50µW
Input current pin4 (range) Against +24V: 10mA
Against 0V: 10mA
Tab.14.5: System data receiver, indication signals and control signals
Pin Signal Type Electrical data
1 RES/STATE Input:
Output:
Against +24V: 15mA
Against 0V: 80mA
3 EDM Input: Against 0V: 15mA
4 RES Input: Against 24V: 15mA
Tab.14.6: Technical data of the electronic safety-related switching outputs (OSSDs) on the receiver
Safety-related PNP transistor outputs
(short-circuit monitored, cross-circuit
monitored)
Minimum Typical Maximum
Switching voltage high active (U
v
-1.5V) 18V 22.5V 27 V
Switching voltage low 0V +2.5V
Switching current 300mA 380mA
Residual current <2µA 200 µA
a)
Load capacity 0.3µF
Load inductivity 2H
Permissible wire resistance for load <200Ω
b)
Permissible wire cross section 0.25mm
2
Permissible cable length between receiver
and load
100m
Test pulse width 60μs 340μs
Test pulse distance (5ms) 60 ms
OSSD restart delay time after beam inter-
ruption
100ms
a) In the event of a failure (if the 0V cable is interrupted), each of the outputs behaves as a 120kΩ resistor
to U
v
. A downstream safety PLC must not detect this as a logical "1".
b) Note the additional restrictions due to cable length and load current.
NOTICE
The safety-related transistor outputs perform the spark extinction. With transistor outputs, it is
therefore neither necessary nor permitted to use the spark extinction circuits recommended by
contactor or valve manufacturers (RC elements, varistors or recovery diodes), since these con-
siderably extend the decay times of inductive switching elements.