Pulse Output Installation
The pulse wires should be fed through the enclosure’s M10 waterproof glands and connected to the terminal
block, taking note of the positive and negative terminals. There will be 2 terminals used per channel, so the
dual-channel pulse counter would use 4 terminals. The pulse input wires are connected to IN1 for single channel
models, and IN1 and IN2 for dual-channel models.
Diagram of a pulse output connected to Input 1 of the single-channel ZPC-10
Note: the single-channel pulse counter may use the same hardware as the dual channel version and so would
also have a 4-pin terminal block. However, only the first channel (IN1) will be enabled on the ZPC-10/12 variants.
Dry pulses are not polarity sensitive, but Open Collector and Active pulses are polarity sensitive. Take note of the
positive and negative terminals for both inputs.
Configuring the Jumpers
To the right of the terminal block there is a selector grid that is used to configure the ZPC for different types of
pulse inputs. There are two rows of jumpers in the grid, the top row for IN1 and the bottom for IN2. The columns
of the grid are used to configure the pulse type. For Battery Powered Pulse Counters the selector options are:
●T for Temperature Sensors (Not used on the ZPC product range)
●AP for Active Pulse Inputs
●DP for Dry Pulse Inputs, or Open Collector Inputs
The image below shows a single-channel battery powered pulse counter (ZPC-10) configured for a Dry Pulse
Input. Note that because this is a single channel device, the location of the jumper for Input 2 is not important.
