OI160104DE/EN
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Operating Instructions
8-channel light barrier multiplexer
IMX-N840
GB
6. Displays and operating elements
SW
ON
OFF
FUNCTION
1
2
3
4
Transmit Power
Multiplex-Speed
Relay1= Curtain
Delay Timer
100%
20%
low
high
yes
no
0-15s off
8-CHANNEL INFRARED MULTIPLEXER
H1
P1
S1 - S8
S9 - S12
H12
H2
P2
H13
H3
P3
H14
H4
P4
H15
H5
P5
H16
H6
P6
H17
H7
P7
H18
H8
P8
P10
P9
H19
H9
H10
H11
H1 - H8
Relay status indicator (yellow)
H9
Slave operation indicator (yellow)
H10
Light curtain mode (yellow)
H11
Power ON indicator (green)
H12 - H19 Sensitivity indicator (green)
P1 - P8
Sensitivity adjusters (channel 1 - 8)
P9
Switching ON delay (output no. 1)
P10
Switching OFF delay (output no. 1)
S1 - S8
Switching mode (channel 1 - 8)
S9 - S12
Functions
7. Choose the sensor heads
Before you turn on the multiplexer, select the transmitter
and receiver for your application. Each channel needs one
transmitter and one receiver. This includes choosing the
sensor heads body style and cable length or quick disconnect
that meets your requirements.
8. Installation
The multiplexer can be installed with two holes (DIN 46121)
or a DIN rail mounting clip (DIN 46277). The wiring diagramm
is printed on the front label of the multiplexer or see
picture
2: Wiring diagram
.
9. Choose the functions
The functions are selectable by DIP-switches located on
the front side of the multiplexer (see also
table 4
).
S9 - transmit power
1
S10 - Multiplex rate
(Multiplex speed)
1
20%
16 ms (high)
1
100%
32 ms (low)
1
S11 - Light curtain function
(Output 1 = curtain)
1
S12 - Time delay
(Delay Timer)
1
inactive (no)
1
inactive (off)
1
active (yes)
1
0 - 15 s
table 4: DIP-switches S9 - S12
9.1 Switching mode
1
The switching function describes the output behavior on
interruption of the infrared beam. There are two types of
switching functions: Light and Dark Mode.
Light mode:
relay contact closes (COM → NO)
Dark mode:
relay contact opens (COM → NC)
The switching mode is selectable by the DIP-switches S1 to
S8. The number of the DIP-switch is equal with the number of
the transmit channel. If the DIP-switch is in the OFF postion
the function is set to light mode and if the DIP-switch is in
the ON postion the function is set to dark mode.
9.2 Transmit Power
1
The transmit power of the multiplexer can be switched to
less sensitive.
100%:
The multiplexer has the maximum sensitivity value
(highest range).
20%:
The multiplexer has 20% of the maximum sensitivity
value.
9.3 Multiplex-Speed
1
The multiplex speed is the speed between activating the
sensor heads one after another. If the multiplex speed is
high
1
, the reaction time (T
ON
/T
OFF
) for all channels is short.
Because the evaluation unit has less time to check the
infrared signal the maximum range gets shorter. If the
multiplex speed is low
1
, the reaction time (T
ON
/T
OFF
) for all
channels is long and the range has the maximum value.
9.4 Curtain mode (Output 1 = Curtain)
1
The light curtain function combines all the light barriers
outputs together into one output (channel 1). It utilizes a link
between the individual channels. If there is no interruption in
the light circuit, the yellow status indicator, (RELAY STATUS)
1
remain illuminated. Using the switching function (Dip-switch
S1), the cuircit logic can be inverted.
i
Unused channels must be switched to dark mode,
if e.g. a light curtain with seven channels should be
builded. The first channel must always be connected
in curtain mode. The DIP-switch S1 has an effect
on the hole light curtain function.
9.5 Switching delay (Relay 1 - Timer)
1
The switching delay only effects on the output from channel
1. The timer can be adjusted up to 15 seconds with two
potentiometers P9 and P10 (switching ON and OFF delay).
9.6 Switching-on delay (t-ON)
1
Switching-on delay is the time between the presence (light
mode operation) or absence (dark mode operation) of the
infrared beam and turning the output on.
9.7
Switching-off delay (t-OFF)
1
Switching-off delay is the time between the absence (light
mode operation) or presence (dark mode operation) of the
infrared beam and turning the output off.
1
Inscription front label
