Rockwell Automation RELIANCE ELECTRIC SP500 - Page 80

F-15 Electronic Thermal Overload Enable (continued)
When F-15 = ON, the drive faults if it exceeds the thermal overload time (60 seconds
at 150% of F-14). When an external thermal switch or other overtemperature
monitoring device is connected to the function loss circuit (terminals 10 and 11), this
parameter may be set ON or OFF.
For multi-motor applications, set this parameter to OFF. The individual motors must
have thermal switch protection.
F-16 Coast Stop Enable
This parameter selects
how the motor will stop
when given a stop
command.
Parameter Range: ON = Enable coast stop (motor will coast to rest)
OFF = Disable coast stop (motor will ramp to rest)
Default Setting: OFF
Step Size: N/A
ATTENTION: The user must provide an external, hardwired emergency
stop circuit outside of the drive circuitry. This circuit must disable the
system in case of improper operation. Uncontrolled machine operation
may result if this procedure is not followed.
A coast-to-rest stop turns off the transistor power device drivers. A ramp-to-rest stop
fires the transistor power device drivers until the motor comes to a stop and then turns
off the power device drivers.
Note that the function loss input opening or a drive fault will always cause a coast-to-
rest stop.
F-17 Reverse Disable
This parameter
enables or disables
reverse rotation of the
motor.
Parameter Range: ON = Disable reverse
OFF = Enable reverse
Default Setting: OFF
Step Size: N/A
If F-17 = OFF, the forward/reverse input allows forward or reverse rotation of the motor.
If F-17 = ON, reverse rotation of the motor is prohibited. When F-17 = ON, pressing
the FORWARD/REVERSE key on the keypad in local control, or wiring to terminal 9
on the terminal strip in remote control, does not affect drive operation.
8-12 SP500 AC Drive Installation and Operation Manual Version 3.1