CONTREX MLP-Drive - Manual (Page 23)

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Figure 2-3 I/O Power / Isolated
Figure 2-4 I/O Power / Non-Isolated
INPUTS
NOTE: The installation of this motor control must conform to area and local electrical
codes. See The National Electrical Code (NEC,) Article 430 published by the
National Fire Protection Association, or The Canadian Electrical Code (CEC).
Use local codes as applicable.
I/O Power (J4 pins 1, 2)
For isolated operations, the
Frequency Inputs (J5 pins 1, 2, 3),
the Digital Inputs (J5 pins 4-13 ), the
Digital Outputs (J5 pins 14-17) and
Analog Input (J5 pins 18,19) require
an external source of +5VDC power.
CAUTION: The MLP-Drive is
shipped from the factory non-
isolated with J1 and J4 jumpers.
You must remove the J1 and J4
jumpers before you connect the
External Power supply or you can
damage the equipment. The
external supply should be free of
ripple and noise to prevent
analog signal bounce. Do not
exceed +5VDC on the I/O Power
input.
Use the Auxiliary Power Output
(J1 pins 1, 2) to supply power to
non-isolated operations. The
MLP-Drive is shipped from the
factory with the wiring in the non-
isolated operation.
NOTE: The MLP-Drive should be
wired in the isolated mode
when using the analog
input for precision appli-
cations (setpoint or
frequency replacement).
References: Appendix A ,
MLP–Drive Specifications.
+5VDC *
External
Power
Supply
1
2
J4
+5V
COM
1
2
J4
1
2
J1
COM_AUX
+5V
* Do not connect the External Power Supply
Common to Earth Ground.