Rockwell Automation 23P PowerFlex DC Stand Alone Regulator and Gate Amplifier - Manual (Page 51)

Rockwell Automation Publication 23P-UM001D-EN-P - July 2012 51
Gate Amplifier Installation and Wiring Chapter 3
RDY
This is the Ready relay interlock. The Gate Amplifier has Normally Open relay
contacts that close when the Gate Amplifier is “ready to run.” The Ready relay is
to be wired into the drive “Run Permissive” logic. The Ready relay will “drop out”
when the Gate Amplifier has a malfunction. The Ready relay circuit is rated at 1.4
Amps, (fused at 2 Amps, relay contacts rated at 2 Amps).
EXT GATE P/S
If an external power supply is required, it should meet the following ratings:
• For the PowerFlex DC SAR, 48V DC, 5 A (minimum), (250 W)
• For the SD3000 PLUS, 48V DC, 3 A (minimum), (150 W).
The power supply must also have current limit protection. For noise protection,
an AC line filter must be used in the 120V AC supply line to the 48V power
supply. The filter is Corcom part number 10VVI, (Rockwell Automation part
number 612421-1C) or equivalent.
Note: When using the external power supply, the Gate Coupler Assembly
“SD3K-GATMDL HIGH” must be used for firing the SCRs. If the Gate
Coupling boards are to be separately mounted, then the 97306101 Gate Coupler
board should be used.
Twisted pair should be used for the output wiring of the power supply. The power
supply should be mounted near the Gate Amplifier. As a general rule, the wiring
between the external power supply and the Gate Amplifier should be
approximately 40 inches (1 meter) or less.
• When installing a 48V external gate power supply and/or wiring the
120VAC input, a fuse block with a 10 A fuse and line filter (as mentioned
above) are required. The output is wired to the two point connector that
plugs into the front of the Gate Amplifier.
• 48V Relay part number: 700-HC24Z48-3-4
• Socket part number: 700-HN104 Series D
• Fly Back Diode/LED part number: 700-ADL2 Series B
Note: The coil is polarity sensitive when the Fly Back diode is connected.
• An interlock relay is required for the external gate power supply. The relay
coil is wired to the output of the 48V external gate power supply to
indicate that the power supply is active. The contacts of the relay need to
be wired into the “Run Permissive” logic.