High Speed Counters

All of the T3 controller and T3E expansion modules can accept pulses as input signals. These can be a dry contact or an NPN/PNP signal with its own excitation signal.

All inputs can accept ‘low speed’ pulse counters and a few of the inputs can also accept high speed inputs. The ‘high speed’ counters can capture 100Hz signals and the ‘low speed’ counters are limited to around 1Hz.

Here are the specifications for the minimum pulse width and the maximum frequency for each type of input.