upon activation of the light in the relevant operating mode.
For a visual control, a stopwatch can be used to count the
number of events over 1 minute. 55 to 65 flashes or 85 to
95 blinking cycles must be generated per minute.
k) Functional control at operat-
ing voltage limits
Function test as described in chapter 7.2 under 1.) at 10V
DC and 30V DC respectively at the supply clamps for the
light and the monitoring circuit
l) Control of the monitoring
function for the individual
strips
With the light and monitoring circuit switched on — the
fault indicator relay is activated — use appropriate tools to
interrupt the path of the light between the individual photo-
diodes and the associated LED strips. The fault indicator
relay must trip in each case. After removing the obstacles
in the path of the light, the fault indicator relay must re-
energize within 2.5 s. An arbitrary operating mode can be
selected for this test
m) Measurement of the operat-
ing voltage consumption
Measurement of the I
RMS
for the light and the monitoring
circuit under the following conditions: Ub=24 V DC, day
mode, all sectors switched on.
I
RMS
Light flashing mode = red
0.24 A +20 %
clear/ amber/ blue
0.25 A +20 %
green
0.30 A +20 %
I
RMS
Light blinking mode = red
0.32 A +20 %
clear/ amber/ blue
0.33 A +20 %
green
0.37 A +20 %
I
RMS
Light Redating light =
red
0.16 A +20 %
clear/ amber/ blue
0.16 A +20 %
green
0.19 A +20 %
I
RMS
Monitoring circuit =
0.035 A +20 %
n) Measurement of internal
supply voltages
Points of measurement
„VLED“ to „LED GND“:
red
+ 5.08 V +5 %
clear/ amber/ blue
+ 7.08 V +5 %
green
+ 7.38 V +5 %
„V
MON
“ to „Mon GND“: 5.95 V +5 %
The points of measurement are to be identified.
o) Measurement of internal
reference voltages
Points of measurement
"TP1" to "GND Mon": 2.50 V +1 %
"TP2" to "GND Mon": 5.94 V +5 %
"TP3" to "GND Mon": 3.11 V +5 %
The points of measurement are to be identified.
Logging
p) Logging of the test results
must comply with the rules for functional safety according
to IEC/EN61508
* If a test returns a negative result, then the system must be taken offline and other measures must be used to
ensure a safe operating environment.
Table 6 - Repeat test
085501100
page
13 /16
30401 – 004-2
