GE DewPro MMY30, User Manual

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Wiring Instructions 3-3
November 2005
Electrical Connection
Figure 3-4 below illustrates electrical connections for the DewPro
MMY30.
Figure 3-4: Electrical Connections
General Instructions
1.
Unscrew the cap on the terminal side of the unit.
2.
Loosen the cable gland located on the side of the unit.
3.
Feed the cable through the conduit opening.
Note:
Use a standard signal cable size.
4.
Retighten the metal cable gland to meet IP 67 and to relieve any
stress on the wire.
5.
Verify that a voltage between 12 and 28 VDC is across the
terminals and -.
Note:
This is the voltage that appears across the DewPro terminals,
not necessarily the power supply voltage due to voltage loss in
wire length, displays, indicators, etc.
6.
In order to meet EMI/RFI immunity, a two-wire shielded cable
with a common foil shield layer is being used to power the MMY
30. Removing the insulation by 3” allows users to pull back the
foil, clamping it in between the metal cable gland. The ground
wire must be connected to the internal grounding screw.
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