02 IMPORTANT SAFETY INFORMATION
3BHS842007 E01 REV C
ACS6080
USER MANUAL
2.7.1
Safety and protection requirements
The system integrator must ensure that the following minimum safety
and protection requirements for the drive are met:
2.7.2
Safety and protection requirements for the MCB
The following safety requirements are also in the MCB specifications for
the drive:
• MCB open and/or trip command:
must be wired directly from the
drive to the MCB. If you want to wire the command through a PLC or
DCS system, the system must be certified to meet SIL three-level
requirements and to fulfill the maximum MCB opening timing
requirements. The drive must also be able to open the MCB at any
time. It is not permitted to interrupt the open and/or trip
command, eg, with a local-remote switch in the MCB.
• Closing control of the MCB:
when the MCB is in service position, the
drive must have exclusive control over closing the MCB, ie, local
closing of the MCB is not permitted.
• MCB maximum opening time:
cannot exceed the maximum time that
is defined in the product or project-specific MCB specifications.
Typical maximum values for the drive are defined as follows:
• Maximum protection trip time:
75 ms
The maximum protection trip time is the maximum allowed
breaking time (open and arcing) of the breaking device after the
open command has been initiated to prevent further damage to the
drive, such as diode failures.
• Maximum safety trip time:
500 ms
The maximum safety trip time is the maximum allowed time to
ensure safe disconnection of the main power supply to prevent any
hazard to personnel.
