440L-M8100 Datasheet, PDF (1/1 Pages) Allen-Bradley – Light Curtains

Safeguarding Applications
Light Curtains
POC, 440L-M8100 (Muting), Dual Channel
+24V DC
POC Receiver
1 2 7 6 53 4
POC Sender
1 2 7 34 56
Bulletin 100S
or 700S
K1
K2
1 2 3 4 5 6 7 8 9 10 ¹¹ 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
440L-M8100
+ - +-
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
+
+
-
A1
+
-
B1
+
-
A2
Gnd
PE
-
B2
Four Muting
Sensors
PNP Output
L1 L2 L3
K1
K2
M
H1
S1
Muting Lamp
Restart Lamp
Circuit Status
The light curtain is not detecting the presence of any objects. The output contactors, K1 and K2 are de-energized.
Operating Principle
With no object in the sensing field, pressing and releasing S1 will cause the outputs to energize.
When an object enters the sensing field, the outputs will de-energize and the restart lamp flashes.
To start muting, the protection field must be free and the outputs K1 and K2 energized.
During the muting period, the mute inputs must stay activated, without interruption, when changing from A1 & A2 to B1 & B2.
If an object remains in the protected sensing field after a power interruption, the object can be moved out of the protected field through the
actuation of a spring return, key operated switch S2 (not shown). To prevent a steady override, an additional contact of S2 can be integrated
into the control system.
Fault Detection
If either contactor K1 or K2 sticks ON, the other functioning contactor will turn the load OFF.
The outputs of the 440L-M8100 are monitored PNP outputs.
A short across S1 will prevent the operation of the output circuits.
A fault of the muting sensor will be detected so that new muting is prevented.
If the muting lamp is not connected, is defective or is shorted, muting can not be started.
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