30 Hydro-Mix HT Mechanical Installation Guide HD0766 Rev 1.2.0
1.11
Digital inputs
•
One configurable digital input 15 – 30 V DC activation
•
One configurable digital input/output – input specification 15 – 30 V DC, output
specification: open collector output, maximum current 500 mA (over current
protection required).
1.12
Connections
1.12.1
Sensor Cable
•
Six pairs twisted (12 cores total) screened (shielded) cable with 22 AWG, 0.35mm2
conductors.
•
Screen (shield): Braid with 65% minimum coverage plus aluminium/polyester foil.
•
Recommended cable types: Belden 8306, Alpha 6373
•
500 Ohm resistor – The recommended resistor is an epoxy sealed precision
resistor of the following specification: 500 Ohm, 0.1% 0.33W)
•
Maximum cable run: 100m, separate to any heavy equipment power cables.
1.13
Grounding
The sensor body is connected to the cable shield. Ensure equipotential bonding of all
exposed metalwork. In areas of high lightning risk, correct and adequate protection should be
used.
The sensor cable shield is connected to the sensor body. To prevent earth loops the shield
must not be connected at the control panel
Summary of Contents for Hydro-Mix HT
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