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Hardware Installation
Power Source
Power Source
Important
Any installation involving electrical wiring and connections should be done by someone who is experienced in this
field. The safety of any system incorporating the equipment, is the responsibility of the assembler of the system.
Follow all local and national wiring codes.
Powering the unit
The unit will boot up as soon as an 8 to 30 VDC is applied to one of its power inputs and immediately shuts off
when this input voltage is removed or drops below or around 7.4 VDC.
Testing the power connection
Check the P1 and P2 LED's on the RTU: if either or both are green, then the unit is powered. If both are OFF, then
review the installation procedures or contact Red Lion Technical Support for further assistance.
6-pin Screw Terminal
Power is supplied to the unit via the 6-pin screw terminal on the top panel. Use copper wiring with a minimum
insulation rating of 90°C. The pins are described as follows:
Power Connector
(top of unit)
Note: for best grounding, ground both chassis ground screws in the connector AND the ground screw next to the
power connector.
Note:
• Terminals are sized to hold 28 to 12 gauge wire, 12 AWG wire area is 3.31mm2.
• Torque spec for terminals is 0.5 Nm.
• Use copper wire rated to 90°C or above.
RAM 9000 Series Hardware Guide
Must consult guide in all cases where this symbol is marked.
PIN
P1+
Power 1+
P1-
Power 1-
Chassis Ground
P2+
Power 2+
P2-
Power 2-
Chassis Ground
To meet UL requirements, a "Class 2 Source" power supply is required.
NAME
This is the primary power source input.
This is the primary power source input.
Tie to the panel or chassis ground.
This is the secondary power source input.
This is the secondary power source input.
Tie to the panel or chassis ground.
Revised 2015-07-16
DESCRIPTION
2-37
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