GNG Systems Ltd.
Industrial Information Systems and Electronic Controls
Interface divides input signal by true 1 thru 10 selectable Interface modifies input signal for PLC or data collector

DIN PCB mounted Interfaces

Divide By N interface:  

The picture to the left shows a Divide By N signal interface. The interface, powered from 24 volts DC, isolates the incoming signal from a sensor and accurately divides the pulse number any number between 1 to 10, adjustable by on-board rotary switch or external selector.

For example, if five incoming signals need to be recognised by a totalizer, PLC or data collector as one signal, then set the rotary switch to 5 and for each batch of five signals from the sensor, one signal will be sent out to the data gathering device.

Opto-isolation interface:

If you are using totalizer/counters or PLCs to collect your signal data from signals generated by other power sources then you will need opto-isolation.

Now there is no need to buy separate Opto-isolators, we have a range of DIN PCB’s that save you money and space by incorporating 4, 8 and 16 channels on one unit.

Delay by N interface:

This unit is designed to accept a signal from one source that needs to be delayed by a set number of counts from another signal source.

It has a surprising number of applications but the most obvious one is where a sensor detects an object on a production line that needs to be acted upon by a machine at a distance further down the line..

General Purpose Interface unit GPIF1.

So many functions in one unit!

  1. Correctly allows inhibiting of a signal stream by ensuring that the signal cycle is complete before allowing the inhibit to act. This prevents partial signals being sent on to the data gatherer that might be missed where the data gatherer has an input frequency limit (they all do). Jumper settings allow you to inhibit when inhibit is ON or OFF.
  2. Output signal period can be extended to guarantee acceptance by the data gathering device input frequency. For example,  Monitoring the rotation of a shaft using a proximity switch that switches OFF/ON when a key slot or screw head passes can produce a very short pulse from the sensor that will require a high speed input at the data gatherer. This unit will modify the signal by stretching the signal to a pulse time that is more appropriate for the data gatherer.
  3. Divide by 1, 2 and 4, allows you to correctly divide the signal stream. For example, 2 pulses = 1 product, set the unit to divide by 2 and for every 2 pulses into the GPIF one pulse is sent to the data gatherer whilst maintaining inhibit accuracy referred to previously.
  4. Short signal pulses can be extended from 5 milliseconds to several seconds to generate such signals as “product present”. For example, the main production machine has stopped but product is still moving on the conveyor, a pulse stream detected by a count sensor can be extended to 0.5, 1 or more seconds to produce a signal that indicates  there is still product on the conveyor and that the conveyor should keep running until the products are clear.