Common bus and precharge considerations, Operating conditions and temperatures – Rockwell Automation 20D PowerFlex 700S Phase II Drive Frames 1...6 Installation Instructions User Manual

Page 14

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Rockwell Automation Publication 20D-IN024C-EN-P - July 2013

PowerFlex 700S Adjustable Frequency AC Drive - Phase II Control

Common Bus and Precharge Considerations

The following notes must be read and understood. Also refer to Selecting/
Verifying Fan Voltage (Frames 5 and 6 Only) on p
age

34

through Power Terminal

Blocks on page

41

for additional common bus information.

1. If drives without internal precharge are used (frames 5 and 6 only), then:

a. precharge capability must be provided in the system to guard against

possible damage, and

b. disconnect switches Must Not be used between the input of the drive

and a common DC bus without the use of an external precharge device.

2. If drives with internal precharge (frames 1…6) are used with a disconnect

switch to the common bus, then an auxiliary contact on the disconnect
must be connected to a digital input of the drive. The corresponding input
(parameter 361…366) must be set to option 30, “Precharge Enable.” This
provides the proper precharge interlock, guarding against possible damage
to the drive when connected to a common DC bus.

Refer to PowerFlex AC Drives in Common Bus Configurations, publication

DRIVES-AT002

, for more information.

Operating Conditions and Temperatures

PowerFlex 700S frame 1…6 drives are designed to operate at 0…40 °C (32…104
°F) ambient. To operate most frame 1…4 drives in installations between 41 and
50

° C (105.8 and 122 °F), you must remove the top adhesive label from the

drive. Frames 5 and 6 do not have an adhesive label. See

Table 8

and

Figure 1

on

page

15

below for more information.

Table 8 - Enclosure Types and Acceptable Surrounding Air Temperature

IMPORTANT

Removing the adhesive label from the top of frame 1…4 drives changes the
NEMA/UL enclosure rating from Type 1 to Type Open.

Enclosure Type

Temperature Rating

Drive

IP20, NEMA/UL Type 1
(with Top Label)

(1)

(1) Frames 5 and 6 do not have a label.

0…40 °C (32…104 °F)

Frame 1…4, All Ratings

0…50 °C (32…122 °F)

Frames 5 and 6, Most Ratings

(3)

(3) Refer to the Fusing and Circuit Breakers tables on page

44

, for exceptions.

IP20, NEMA/UL Type Open
(Top Label Removed)

(1)

0…50 °C (32…122 °F)

Most Ratings

(2)

0…45 °C (32…113 °F)

20DC072 and 20DE062 Only

IP00, NEMA/UL Type Open
(Top Label and Vent Plate Removed)

(2)

(2) To remove the vent plate, lift the top edge of the plate away from the chassis and rotate the plate out from the back plate. Refer to

Figure 3

on page

17

for location of vent plate.

0…50 °C (32…122 °F)

20DC072 Only

Flange Mount
Front (Inside Encl.) - IP00, NEMA/UL Type Open

Back/Heat Sink - IP54, NEMA/UL
Type 12

0…55 °C (32…131 °F)

0…40 °C (32…104 °F)

Frames 5 and 6

Stand-Alone/Wall Mount - IP54, NEMA/UL Type 12 0…40 °C (32…104 °F)

Frames 5 and 6

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