PABA 20

The PABA 20 is a 2-channel 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.

This amplifier series offers versatile automatic gain adjustment with potentiometer adjustable excess gain (for each individual channel) and switch selectable long or short range which ensures that the transmitting power level is adjusted according to the application, thus achieving optimal hysteresis and excess gain. Once set up, the amplifier will automatically and continuously compensate for moderate contamination and misalignment during operation in accordance with the selected auto gain settings. The series offers a choice between 2 individual relay or 2 individual transistor outputs, with an adjustable 0-10 sec on/off time delay. Light or dark function is switch selectable. 

The amplifiers from the PABA 20 A series can be connected together with up to 9 amplifiers from the PAB(A) series via a bus rail connector positioned on the DIN rail, to form a modular master/slave system with up to a total of 29 channels. The bus connection enables communication between the amplifiers, which allows the channels of all the amplifiers to be multiplexed, ensuring that optical cross talk between channels is prevented and allows a common output from the amplifier modules. Both the PABA 20 A and PABA 20 S can share power supply via the bus connection (except 90-240 V ac types). 

The amplifier offers a test input, which is used for either disabling or enabling the transmitting power temporarily for test purposes. The system includes an alarm output, which is used to indicate if the transmission power is at maximum and the selected excess gain level is not obtained or if a sensor is faulty/disconnected. The sensor LED drive powers the optional monitor LEDs available on the remote sensors – output (LT) and power (LR).
All products include a 3-year worldwide warranty.