The Open Collector interface Board OCB001 has the following functions:

  • Conversion of single-ended 5V TTL/CMOS encoder signal to NPN or PNP open collector signals
  • Configuration and/or programming of the encoder via the ASSIST Interface Board

Input signals

single-ended 5V TTL/CMOS

Output signals

Open Collector NPN or PNP

Supply voltage

9 - 48 V DC

Output current

100 mA


0 – 100 kHz


-40 to 85°C

Overvoltage protection

up to 50 V

Reverse polarity protection

down to -12 V

Short circuit protection

each output

All ID-encoders with A/B outputs

All IT encoders with A/B/I outputs

Open Collector Board OCB001 with dimensions and

1) connector to encoder,

2) connector to ASSIST Interface Board,

3) open collector outputs,

4) input selectors for encoder 1 or 2,

5) jumper to select encoder supply voltage and

6) indication for inputs (encoder 1 or 2) and outputs (NPN or PNP).

Schematic diagram of the Open Collector Board OCB001 with NPN outputs.

Schematic diagram of the Open Collector Board OCB001 with PNP outputs.

Open Collector Interface

$ 127.38 Unit Price

Datasheet Table 1
Input selection
0 = No inputs selected
1 = Encoder 1: inputs A1, B1, I1
2 = Encoder 2: inputs A2, B2, I2

Datasheet Table 2
Output selection
1 = NPN
2 = PNP

Datasheet Table 3
Connectors mounted on the board
0 = No connectors, no components
1 = No connectors, components separate
2 = No connectors, jumper soldered
3 = Only ASSIST connector, jumper soldered
4 = Only Encoder and Output connectors, jumper soldered
5 = All connectors and jumper


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