PAB 20

Product Data

The PAB 20 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.

This amplifier series offers manual sensitivity adjustment, for each individual channel, via an integral potentiometer located on the front panel of the amplifier. 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 and long or short range are switch selectable. The amplifiers from the PAB 20 A series can be connected together with up to 9 amplifiers from the PAB 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 PAB 20 A and PAB 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 amplifier includes an alarm output, which is used to indicate if the signal level is insufficient or if a sensor is faulty. 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.

Product Data

Function	Amplifier
Supply Voltage	10 – 30 V dc / 24 V ac
Number of Channels	2
Sensing Range	47 m
Sensitivity Adjustment	Manual
Output	2 individual NPN
Timer	On/Off Delay
Housing	Removable screw terminals

Technical Data

Supply Voltage	10 - 30 V dc or 24 V ac
Voltage Tolerance	+/- 10 %
Current Consumption	Max. 2,3 W
Response Time ton / toff, Transistor	Short range: 18 ms / 18 ms Long range: 45 ms / 45 ms
Output, Transistor	30 V dc / 100 mA
Alarm Output, Transistor	PNP - 30 V dc / 100 mA
Test Input	Yes
Power On Indicator	Green LED
Output Indicator	Yellow LED
Alarm Indicator	Red / yellow LED
LR Sensor Failure Indicator	Yelow LED
LT Sensor Failure Indicator	Red LED
Master/Slave Address Indicator	Green / orange LED
Signal Level Indicator	Green LED
Sensor Monitor LED Drive	Green LED on the receiver: ‘Power ON’ Yellow LED on the transmitter: PAB output activated
Hysteresis	Approx. 35 %
Operation Frequency, Transistor	Short range: 28 Hz Long range: 11 Hz
Delay Time ton / toff	0 – 10 sec, adjustable
Housing Material	Polyamide

Environmental Data

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

Technical Drawings

• Wiring Diagram
• Dimensions