MPA 21

Product Data

The MPA 21 is a 2-channel, multiplexed photoelectric amplifier, which is to be used in conjunction with 2 sets of remote transmitters LT and receivers LR, from the series 100, 110 and 120.

The 2 channels operate independently of each other with their own set of remote transmitter and receiver. The multiplexing function ensures that optical cross talk between channels is prevented.

The series offers a choice between 2 individual relays or 2 individual NPN/PNP transistor outputs, with or without an adjustable 0-3 sec on/off time delay.

This amplifier series offers manual sensitivity adjustment for each individual channel via integral potentiometers located on the front panel of the amplifier. Light or dark function and long or short range are switch selectable for each individual channel.
All products include a 3-year worldwide warranty.

Product Data

Function	Amplifier
Supply Voltage	24 V ac
Number of Channels	2
Sensing Range	45 m
Sensitivity Adjustment	Manual
Output	2 individual relays
Housing	11-pole DIN socket

Technical Data

Supply Voltage	24 V ac
Voltage Tolerance	+/– 15 %
Current Consumption	Max. 3 VA
Response Time ton / toff, Relay	55 ms / 55 ms
Output, Relay	1 open/ 1 close, 250 V ac/3 A, 120 V ac/5 A
Power On Indicator	Green LED
Output Indicator	Red LED
Signal Level Indicator	Green LED
Hysteresis	Approx. 35 %
Operation Frequency, Relay	9 Hz
Housing Material	Noryl

Environmental Data

Operation Temperature	– 10 to +50 °C
Storage Temperature	– 40 to +80 °C
Sealing Class	IP 40

Technical Drawings

• Wiring Diagram
• Dimensions