Rockwell Automation SF3000 Parallel Gate Amplifier System - Manual (Page 33)

Installation Guidelines 5-7
5.5.1 Connecting AC Input Power
The 115 VAC Input terminals on the Power Supply module must be wired to the AC
power source using twisted-pair wire. Refer to table 5.1 when connecting AC input
power to the Power Supply module.
NOTE: The PGA rack is shipped with the fan internally connected to the L1 and L2
terminals labeled "115 VAC OUTPUT TO FAN."
5.5.2 Installing an Optional External Supply Greater Than +28 VDC
In the rare case that the +28 VDC supply does not supply sufficient power to fire the
gate coupling circuits in the Power Module, an external supply of up to +100 VDC may
be used. The power supply’s output current must be limited to 10A. To add the
external supply to the system, jumpers TB1 and TB2 on the Power Supply module’s
printed circuit board must be configured as described below. Refer to figure 3.1.
• TB1: Disconnect the jumper from the INTERNAL terminal (the default setting).
Connect the jumper from COMMON to the EXTERNAL P/S 2 terminal.
• TB2: Insert a jumper between the two terminals of TB2 (EXT and P/S COM).
The regulated external power supply should be mounted at an appropriate location as
described by the manufacturer. It should be connected to terminals P/S 2 and COM on
the Power Supply module's faceplate through an appropriate filter network, as shown
in Appendix E.
• Connect the regulated external power supply's positive output to terminal P/S 2.
• Connect the regulated external power supply's common to the COM terminal.
5.5.3 Connecting the PMI DC Power Technology Module to the PGA
Power Supply Module
For a regenerative drive, both the forward and reverse gate signals from the PMI DC
Power Technology module are connected to the PGA Power Supply module's
faceplate connectors. For a non-regenerative drive, only the forward gate signals are
used. The part numbers of the forward and reverse gate cables are stamped onto the
cables and should be compared to the wiring diagrams shipped with your system.
Each cable has a 14-pin male connector on one end that mates with one of the DC
Power Technology module's faceplate connectors. The connectors contain key pins to
ensure that the forward and reverse cables are not connected to the wrong signals.
Near the connector, each cable is normally labeled "C4-Pn," where n is the DC Power
Technology module's connector number. For example, the forward gate signal cable
labeled C4-P2 mates with the P2 connector.
Table 5.1 – Input Power Connections
Wire Color Wire Label 115VAC Input
Red AC Line High L1
White AC Line Neutral L2
Green Earth Ground