Rockwell Automation FlexPak 3000 Power Module Version 4.2 - Manual (Page 35)

INSTALLATION AND WIRING
49’1340 e FlexPak 3000 3-11
3.8.5 Emergency Stop-Function
WARNING: To inhibit uncontrolled machine operation in case of the malfunction of the drive, the
user must provide an external emergency stop circuit, which ensures disconnection of
the power source from the motor.
This circuit must be hardwired with electro-mechanic components and shall not depend
on electronic logic or software. The stopping device (e.g. mushroom head pushbutton)
must be accessible to the operator.
Failure to observe this precaution could result in bodily injury or loss of life.
It is the responsibility of the user to decide, how the Emergency Stop Function is fulfilled, depending on
the requirements of the application and based on a risk assessment of the machine.
Disconnection of the power source from the motor may be reached e.g. by one of the following
measures:
a) Circuit breaker used as Emergency Stopping Device:
- easy accessible to the operator, hand operated or
- remote operated, e. g. undervoltage trip coil released by mushroom head pushbutton.
b) Circuit breaker not used as Emergency Stopping Device:
- Emergency Stopping Device (mushroom head pushbutton) interrupts control circuit and
releases Coast Stop according to Category 0.
A Connection Diagram - Example for case b) is shown in Figures 3-8a and 3-8b.
FUNCTION: Actuating of the Emergency Stop pushbutton during operation, causes immediate
drop out of relay K10, opening the n.o. contact at input terminal 8 and blocking of the regulator.
At zero current, opening of contact output MCR will drop out the main contactor via auxiliary
contactor K1. The time delayed normally open contact of timer relay K10T ensures, that in case
of malfunction of the internal control circuit (MCR does not open) the main contactor drops out
after 1 second.
3.8.6 Stopping the Drive
3.8.6.1 COAST-STOP Digital Input
Opening of the digital input COAST-STOP (drive terminal 8) during operation causes blocking
of the regulator and the drive to Coast-to-rest. This input may be used for the Emergency Stop
control circuit, if the main contactor drop out is forced by electro mechanic device, otherwise
this Stop function corresponds with Category 2. NOTE: If this digital input is not used, a jumper
must be wired between drive terminals 7 and 8, otherwise the drive will not start.
3.8.6.2 STOP Digital Input
Depressing the STOP key (between 1 and 3 of drive terminals ) with the drive running causes
the drive to stop in the selected Stop-Mode (‘Coast-to-rest’, ‘Ramp-to-rest’ or ‘Current limit
Stop’). This STOP-function corresponds with Category 2, if the main contactor drop out is not
forced by electro-mechanic device. The function is active at all times regardless of the selection
of AUTO/MANUAL or the CSS setting (KEYPAD/TERMBLK).
3.8.6.3 Customer Interlock
Opening the control input at terminal 9 during operation is the fastest way to disable the drive
output. By software it directly ramps down armature current to zero and then opens the main
contactor. The motor will coast to rest. Because this is a software function it must not be used
for safety relevant stopping. For emergency stop use the coast to stop input as per 3.8.6.1.
NOTE: If this digital input is not used, a jumper must be wired between terminal 9 and 11,
otherwise the drive will not start.
3.8.7 Wire User Devices to the Drive (If Used)
Reference Figure 3-8a and Table 3-6 when wiring user devices to the drive. Size and install all
wiring in accordance with all other applicable standards.