MPA 21 USER MANUAL
Multiplexed Amplifier Series
2-channel manual photoelectric amplifier
Website: www.telcosensors.com
Warning
V 1.11 Part Number: 0666220636
E-Mail: [email protected]
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.
January 2011 edition
Made in Denmark
Telco A/S reserves the right to make changes without prior notice
tel
!
EN
Product Data
Electrical Data
Supply voltage
24 V dc, 24 V ac, 115 V ac or 230 V ac
Voltage tolerance
+/- 15%
Power consumption
Max. 3.0 VA
Output: relay
1 open / 1 closed, 250 V ac / 3 A, 120 V ac / 5 A
Output: transistor
40 mA / 30 V dc
Environmental Data
Temperature, operation
-10 to +50 ºC
Sealing class
IP 40
Approvals
Applicable Remote Sensors & Sensing Ranges
Remote Sensor Series
100
110
120
Sensing Range
Long range mode
10 m
25 m
45 m
Short range mode
3 m
8 m
14 m
Illustration
MPA 21 A
MPA 21 B
Connection
Wiring Diagrams
Relay output — MPA 21 A/B 50X
Transistor output — MPA 21 A/B 60X
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
Enables the channel output to be inactive when
there is an object present in the detection area.
Dark Operated
Enables the channel output to be active when
there is an object present in the detection area.
Output Logic
Detection (thru beam)
Output
mode
Relay
Output
Transistor
Output
Output
indicator
NPN
PNP
Object present
Dark
Closed
Open
On
Light
Open
Closed
Off
Object absent
Dark
Open
Closed
Off
Light
Closed
Open
On
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:
1
Adjust the sensitivity to maximum by turning the potentiometer to full clockwise
position.
2
Check there is no object present interrupting the beam and the sensor pair is
correctly aligned and within their specified sensing range.
3
Select target object with smallest dimensions and most translucent surface.
4
Place target object between remote transmitter and receiver sensors. If the output
status changes, adjustment is not required. If the output status has not changed
proceed to step 5.
5
Decrease the sensitivity by turning the potentiometer counter clockwise until the
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:
Alignment of sensors
Transmitter and receiver sensors are within sensing range
Sensor heads are not excessively contaminated
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
Increase or decrease on delay by turning potentiometer clockwise or
counter clockwise respectively.
Off delay
Increase or decrease off delay by turning potentiometer clockwise or
counter clockwise respectively.
LT
LR
LT LR
