Rockwell Automation 440R Lichtgittermodul MSR22LM mit umschaltbaren Funktionen Light curtain controller User Manual
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Operation mode: Protective operation with muting
Using 2 muting sensors
Using 4 muting sensors
Operation mode: Protective operation with muting
e.g. conveyors
1 or 2 light curtains
Muting of light curtain 1
2 or 4 muting sensors with diff erent input sequences
Auto or manual start
Override via start button
Muting
Muting means to disable temporarily the protective function of a light
curtain. This function is used to transport material through a light curtain
without stopping the machine. The diff erentiation between material and
persons is done by additional muting sensors which have to create a certain
switching sequence together with the light curtain when material passes
the light curtain. The muting control starts then the muting cycle for the
time the material is passing the light curtain. It must not be possible that
a person activates the muting sensors in the same switching sequence as
the material. To realise this function 2 diff erent switching sequences can be
chosen on MSR22LM either with 2 or 4 muting sensors. This makes sure that
if a person passes the light curtain the dangerous movement of the machine
is stopped immediately. The muting cycle is indicated by a muting lamp that
is controlled and monitored by the MSR22LM. The maximum muting time
can be set in 10 steps between 10 s and infi nite.
If the light curtain is still interrupted after the max. permitted muting time
e.g. by blocked material the contacts K1, K2 open and the muting lamp as
well as the LED run 1 show failure code 4.
Starting by pressing the start button is only possible if the muting lamp is
working and the light curtain to be muted is free of interruption. During
the muting cycle a wrong switching sequence or exceeding the maximum
muting time leads to failure code 4. This failure can only be reset by pressing
the start button. The muting sensors have to be installed in a way, that
the correct sequence cannot be achieved manually or by passing the light
curtain (see IEC/EN 61 491-1).
Possible settings
Switch 10:
a = maximum muting time
b = maximum synchronising time
0
1
2
3
4
5
6
7
8
9
S
wit
ch 1
2
LC S1 Auto,
muting 2 sensors
a: 10 s / b: 3 s
a: 20 s / b: 3 s
a: 30 s / b: 3 s
a: 1 min / b: 6 s
a: 5 min / b: 30 s
a: 15 min / b: 90 s
a: 30 min / b: 3 min
a: 1 h / b: 3 min
a: 8 h / b: 3 min
no muting time monit
oring
3
LC S1 Manu,
muting 2 sensors
4
LC S1 Auto,
muting 4 sensors
5
LC S1 Manu,
Muting 4 sensors
Override
If the monitored area is blocked by transported material and the outputs
K1, K2 are switched off , this is indicated by fast fl ashing (approx. 3 Hz) of the
muting lamp. The operator can activate the outputs K1, K2 by pressing the
start button for more than 3 s for a maximum time of 12 s until the muting
sensor are again inactive or the start button is released again.
Example for an override cycle when muting with 2 sensors
muted LC1
muting sensor 1
muting sensor 2
muting lamp
M9477
safety relay K1/K2
start button
unmuted LC2
: on
: flashing
: fast flashing (3Hz)
error code
1
2
t=3 S
override
t < 12 S