Telco Sensors MPA 21 User Manual
MPA 21 USER MANUAL
V
+/-
r
—
—
Multiplexed Amplifier Series
2-channel manual photoelectric amplifier
Product Data
Electrical Data
Supply voltage
Voltage tolerance
Power consumption
Output: relay
Output: transisto
Environmental Data
Temperature, operation
Sealing class
Approvals
Applicable Remote Sensors & Sensing Ranges
Remote Sensor Series
Long range mode
Short range mode
Illustration
Connection
Wiring Diagrams
Website: www.telcosensors.com
E-Mail: info@telcosensors.com
Made in Denmark
24 V dc, 24 V ac, 115 V ac or 230 V ac
1 open / 1 closed, 250 V ac / 3 A, 120 V ac / 5 A
15%
Max. 3.0 VA
40 mA / 30 V dc
-10 to +50 ºC
IP 40
100
10 m
3 m
MPA 21 A
MPA 21 B
110
Sensing Range
25 m
8 m
Relay output
Transistor output
!
This product is not a safety system and must not be used as such.
It is not designed for personnel safety applications, and must not be used
as a stand alone personnel safety system.
120
45 m
14 m
MPA 21 A/B 50X
MPA 21 A/B 60X
EN
Connection Steps
1 Check the power supply and output of the amplifier type.
2 Make sure power is off. Connect wires to the 11-pin socket according to wiring diagram.
3 Plug-in the amplifier into the 11-pin socket. Turn power on.
4 When the amplifier is operating, the green (power-on) LED is on.
Adjustments
Long/Short Range Selection
Long range mode enables the system to operate at 100% (maximum range).
Short range mode enables the system to operate at 30% of maximum range, in order to ease
sensitivity adjustment at shorter ranges.
Long range
Short range
Output Mode Selection
The output mode can be selected via the light/dark switch. Refer to Output Logic table for
reference.
Light Operated
Dark Operated
Output Logic
Detection (thru beam)
Object present
LT
Object absent
LT LR
Sensitivity Adjustment
Maximum sensitivity can be used for most applications and is advised for applications with
contaminated environments e.g. dirt, water and dust. Increase the sensitivity to maximum by
turning the potentiometer to full clockwise position.
Sensitivity adjustment may be required in applications where objects to be detected are small
or translucent. Proceed with the following steps:
Adjust the sensitivity to maximum by turning the potentiometer to full clockwise
1
position.
Check there is no object present interrupting the beam and the sensor pair is
2
correctly aligned and within their specified sensing range.
3 Select target object with smallest dimensions and most translucent surface.
Place target object between remote transmitter and receiver sensors. If the output
4
status changes, adjustment is not required. If the output status has not changed
proceed to step 5.
Decrease the sensitivity by turning the potentiometer counter clockwise until the
5
output changes.
6 Remove target object. Observe the output status has changed.
7 Repeat the procedure for each channel.
If the signal level is low, the green LED (signal status) will go off. In general, it is
recommended to increase the sensitivity till the LED goes on and to check the
following:
Time Delay Adjustment MPA 21 A
The on delay enables output signal to only activate if an object in the detection area is present
for the adjusted time period. (In Dark operated mode)
The off delay enables output signal to remain activated for the adjusted time period.
The time delay is adjustable between 0 - 3 sec.
On delay
Off delay
Alignment of sensors
Transmitter and receiver sensors are within sensing range
Sensor heads are not excessively contaminated
Enables the channel output to be inactive when
there is an object present in the detection area.
Enables the channel output to be active when
there is an object present in the detection area.
Output
mode
Dark
LR
Increase or decrease on delay by turning potentiometer clockwise or
counter clockwise respectively.
Increase or decrease off delay by turning potentiometer clockwise or
counter clockwise respectively.
Light
Dark
Light
Relay
Output
tel
Transistor
Output
NPN PNP
Closed Open On
Open Closed Off
Open Closed Off
Closed Open On
Warning
Telco A/S reserves the right to mak e changes without prior notice
1.11 Part Number: 0666220636
January 2011 edition
Output
indicator
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