AKCP sensorProbe2 User Manual page 6

G. sensorProbe8-X20 & sensorProbe8-X60
The front view above of the SP8-X20 shows the LED's on the units 8 sensor ports and the 20
extra dry contact inputs. The same description applies to these LED's as outlined above for the
sensorProbe8 unit.
The rear view of the SP8-X20 shows the 20 dry contact inputs, the 8 intelligent sensor ports 1
through 8, the 10/100 Ethernet port, the 5VDC AC power input and the GND grounding stud.
H. sensorProbe8-X20/X60 – 20/60 Extra Dry Contact Inputs
Important Note: Please always contact the AKCP support team prior to opening up the units
case. Doing so without prior approval from us will void the warranty on the units.
The 20 & 60 extra dry contact inputs on, for example, the sensorProbe, (or sensorProbe
X20/X60) can be configured as inputs only up to 5 Volts in normal operation. In opto-isolation
mode they can input up to 30 Volts DC. This will protect these inputs and the unit from high
voltages and spikes. Applying more than 5VDC, or AC voltage to the dry contact inputs in
the normal mode will damage the unit and void the warranty.
Opto-isolators provide complete electrical separation between the sensorProbe8-X20/X60 and
the dry contacts. The base units are therefore protected against possible large voltage spikes
caused by lightning for example.
The figure below shows the jumpers (on the dry contact board) set up to provide opto-isolation
support. Again, opening up the unit's case without approval will void the warranty. If you wish to
have the units configured with this opto isolation, then this should be requested when the unit is
ordered from us.
Updated until firmware 476
sensorProbe8-X20 Front View
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SP2/SP4/SP8/SP8-X20 Manual