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Rockwell Automation Publication 750-IN118A-EN-P - May 2021
Chapter 1 Product Overview
Personal Safety
ATTENTION:
To avoid an electric shock hazard, verify that there is no AC input and DC bus voltage before servicing. Remove
power and wait 5 minutes before you open the cabinet door. To verify that there is no AC input and DC bus voltage, take the
following measurements using the specified test points in the drive input bay (not the configured input bay):
• Verify that there is no AC input voltage present using the R/L1, S/L2, and T/L3 test point sockets in the drive input bay by
measuring L to L and L to GND.
• Verify that there is no AC input voltage present using the R, S, and T test point sockets in the drive input bay by measuring L
to L and L to GND.
• Verify that there is no DC bus voltage present using the +DC to -DC test points in the drive input bay by meaDC to -
DC, +DC to GND, and -DC to GND.
The locations of these test points are shown in the following publications:
• PowerFlex 750-Series Products with TotalFORCE® Control Product Information, publication
, Terminal and Busbar
Locations section
• PowerFlex 750-Series Products with TotalFORCE Control Installation Instructions, publication
, Power Terminal and
Busbar Locations section
Procedures for verifying that there is no AC input and DC bus voltage in the drive are provided in the PowerFlex 750-Series
Products with TotalFORCE Control Hardware Service Manual, publication
When a configured input bay with a circuit breaker for input protection is used as a Lock Out Tag Out (LOTO) device, you
must measure voltage across the circuit breaker to verify that there is no AC input before servicing. This is in addition to the
measurements in the drive input bay.
Verify that there is no AC input voltage present at the load side of the circuit breaker as follows: Measure voltage across all
phases and measure voltage from each phase to ground. Check phase-to-phase on the line side and load side. If the line
side has power and the load side does not, the circuit breaker is open and the power is OFF. If both the line side and load
side have power, the circuit breaker is closed and the power is ON. If the line side and load side both have no power, then
measure resistance across line and load to see if the breaker is open or closed. Circuit breaker locations are shown in
Component and Connection Locations on page 64
.
ATTENTION:
To avoid an electric shock hazard, the configured input bay and configured output bay include protective
touch guards to shield exposed electrical equipment against accidental contact. These touch guards are removed during
installation. Before operating this equipment, make sure all protective touch guards are installed to help prevent personal
injury or equipment damage.
ATTENTION:
Hazard of personal injury or equipment damage exists when using bipolar input sources. Noise and drift in
sensitive input circuits can cause unpredictable changes in motor speed and direction. Use speed command parameters to
help reduce input source sensitivity.
ATTENTION:
Risk of injury or equipment damage exists. DPI™ or SCANport™ host products must not be directly connected
together via 1202 cables. If they are directly connected via 1202 cables, unpredictable behavior can result.
ATTENTION:
The drive start/stop/enable control circuitry includes solid-state components. If hazards due to accidental
contact with moving machinery or unintentional flow of liquid, gas or solids exists, an additional hardwired stop circuit may
be required to remove the AC line to the drive. An auxiliary braking method may be required.
ATTENTION:
Hazard of personal injury or equipment damage due to unexpected machine operation exists if the drive is
configured to automatically issue a Start or Run command. Do not use these functions without considering applicable local,
national and international codes, standards, regulations or industry guidelines.
ATTENTION:
Possible hazard of personal injury due to prolonged exposure to high sound levels exists for PowerFlex 755T
Drives Configured to Order Program products of size frame 8 and higher during operation. Follow applicable local, national,
and international codes, standards, regulations, or industry guidelines for hearing protection when exposed to potentially
damaging noise hazards.