Parker Vansco - Multi-Purpose Used as DC-Coupled Frequency Input

18 VMM2404
Inputs
The following shows a typical AC-coupled frequency input connection:
Internal to product
Sensor Ground
Variable Reluctance
Sensor
AC Coupled
Frequency Input
Figure 6: AC-coupled frequency input installation connections
3.1.4. Multi-Purpose Used as DC-Coupled Frequency Input
The following multi-purpose inputs can be used as DC-coupled frequency inputs:
 INPUT3_ADF to INPUT_15_ADF
3.1.4.1. DC-Coupled Frequency Input Capabilities
DC-coupled frequency inputs allow you to read the frequency of external signals
that have a ground reference and no DC offset. These inputs are ideal for use with
hall-effect type sensors.
Quadrature and pulse counting is possible with DC-coupled frequency inputs.