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5.5 Installing Power Wiring from an External DC Bus to
the Drive's Internal DC Bus Terminals
Use the following steps to connect DC input power to the drive:
Step 1. Wire the DC input power leads by routing them according to drive type. Refer
Step 2. Connect the DC input power leads (two-wire 620 VDC nominal) to the proper
Step 3. Tighten the DC input power terminals to the proper torque as shown in table 5.2.
Step 4. On 60-100 HP drives using volts/hertz regulation, set parameter H.017 to a
5.6 Changing Blower Transformer Taps
On 200-400 HP drives, the blower transformer is factory-wired for 460 VAC operation.
If incoming power is 380 or 415 VAC, the blower transformer taps must be changed
before the AC input power leads are connected as described in section 5.4. Use the
following procedure to change the transformer taps:
Step 1. Locate the blower transformer as shown in figure 2.8. The transformer has
Step 2. Unplug the wire connected to the 460V tap and move it to the appropriate
Step 3. Continue with the AC input power wiring installation described in section 5.4.
5-6
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to figures 4.1 through 4.7. Tables 3.3 through 3.8 contain the recommended
power wiring sizes.
Note that the following GV3000/SE drives are not to be used on a common
DC bus: M/N 125R4160, 200V4160, 250V4160, 300V4160, 350V4160, and
400V4160.
ATTENTION: Do not route signal and control wiring in the same conduit
with power wiring. This can cause interference with drive operation.
!
Failure to observe this precaution could result in damage to, or
destruction of, the equipment.
ATTENTION: If the GV3000/SE drive is connected to an external DC
bus, the user is responsible for DC bus short-circuit protection. Failure
to observe this precaution could result in damage to, or destruction of,
the equipment.
terminals.
On 1-60 HP drives, connect the DC input power leads to terminals + and - on
the power terminal strip.
On 60-100 HP drives, connect the DC input power leads to terminals 45 and 47.
Note that the maximum discharge rate of the DC bus supply should be
200 V/second.
value greater than one to enable DC bus operation. Refer to the GV3000/SE
Software Start-Up and Reference manual for additional information.
three taps: 380V, 415V, and 460V. The transformer is factory-wired for 460V
input power.
tap, either 380V or 415V.
GV3000/SE AC Drive Hardware Reference, Version 6.06
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