Wavetronix Click 500 (programmable controller) (CLK-500) - Developer Guide - Manual (Page 23)

22 CHAPTER 1 • USING THE CLICK 500
Note
Wavetronix offers a 6-foot shielded extension cable to prevent AC coupling crosstalk
when a longer cable run is necessary. If you make your own extension cable, be sure
to use shielded cable and to properly ground the shield as illustrated in the following
figure.
Solder joint for black wires
Solder joint for white
and drain wires
Heat shrink
White heat shrink
Foil shield
Jacket of 6' cable
Signal (I1+ or I2+)
Ground (I1- or I2-)
Heat shrink Solder joint
White wire Drain wire White heat shrink
Figure 1.10 – AC Transformer Extension Cable Diagram
Contact Closure Digital Input
If a digital input is used to monitor contact closures, connect the I1+ pin to one side of the
contact output and the I1- pin to the other side of the contact output. For demonstration
and troubleshooting purposes you can use the digital inputs to monitor the contact closure
outputs of the Click 500 itself. To do so, wire I1+ to O1+, I1- to O1-, I2+ to O2+ and I2- to
O2-.
Note
I1- and I2- are both connected to Click 500 ground. Do not apply positive voltage to
these connectors as they are intended as a ground return.
Digital DC Input
When a digital input is used to monitor DC voltage, one of the following three different
thresholds can be selected: 9, 11.6, or 23.3 VDC. If the input voltage is greater than the
selected threshold, the input is designated as being in the ON state with a logical 1; if the
input voltage is less than the selected threshold, the input is designated as being in the OFF
state with a logical 0.