Brief Description Of The System - Pfannenberg PMF 2015-SIL Instructions De Service

1. Brief description of the system

The PMF 2015-SIL is an all-round flashlight for the signalling of dangerous situations in safety relevant appli-
cations, e.g. as an intrinsic part of an E/E/PE system (according to EN61508). Optical warning signals with
high light intensity and short duration, with a maximum flash energy of 7 Joules can be generated.
A favourable bundling of the light on a horizontal level is achieved by a Fresnel lens-shaped hood and a
special XENON flash tube. This allows for a very good recognisibility over large distances with a small power
input.
This allows for very good detection over great distances with only low power consumption. A distinct atten-
tion effect for people is reached by the high difference of luminance to the surrounding area. The flashing
light is concepted for use in buildings as well outdoors. Driving rain and condensation do not damage it.
The generation of the optical warning signal (see Fig. 1) is monitored internally by an optical sensor and
corresponding evaluation circuit. If an optical warning signal is generated, a relay activates permanently with
forcibly guided contacts. A fault can be interpreted with a superior control.
Fig. 1 Illustration of the functionality of the switching parts of the warning light with monitoring
Operational voltage
Fig. 2 Generation of the optical warning signal
Operational voltage
Fig. 3 Optical monitoring equipment (diagnosis channel)
Datei/ file name:085501931f D-E-F.doc
Optical
receiver
Flash tube
Flashing light
1 2 3 4
Operation voltage Operation voltage
Flashing monitor
Flashing light
DC-DC- converter
Voltage
controller
Monitoring circuit
Fault signals
Alarm relay with forcibly guided
contacts
(normal operation S1 open,
S1
S2 closed -> no fault)
S2
7 5 6 8
Fault alarm contacts
max. 230V~ /6A
min. 5V= /10mA
Charging capacitor Flash tube
Threshold Integra-
switch tor
17 / 44
Timer
Impulse Opt.
shaper Sensor
Zeichnungsnr./ Drwg-no.: 11516-42e