ATS SuperTrak GEN3, Operation And Maintenance Manual, Page: 151 / 366

Operating Procedures
SuperTrak™ GEN3 System Operation and Maintenance Manual 139
Rev. 9 (12-2021)
SuperTrak Conveyance Platform Power OFF Behavior
To stop the system, the PLC disables the SuperTrak conveyance platform over the
network at the appropriate time. This is typically triggered by a system
cycle stop
or cycle end button on the PLC-controlled operator interface. For example:
• The PLC can complete all current operations, move tooling clear, and then
disable the SuperTrak conveyance platform.
• The PLC can completely purge the line of parts, and then disable the SuperTrak
conveyance platform. When the system stops, the user turns the
main power
disconnect switch to the OFF position.
When the PLC detects that the safety circuit is open (for example; a guard door is
open, or an emergency stop button is activated), it immediately drops the enable
signal to the SuperTrak conveyance platform. This causes pallets to decelerate to a
controlled stop. At the same time, the system safety circuit maintains the fail safe
output to the SuperTrak conveyance platform for a time delay OFF of 100-300
milliseconds. The amount of time is configured based on pallet speed and payload,
to make sure that there is adequate time for the pallets to stop. A 300 millisecond
delay is adequate for a pallet with high payload traveling at full speed.
The disable delay time is set in both the system safety circuit and in the
TrakMaster software (see
Section Parameters > Section Disable Delay Time ).
When the disable delay time is correctly configured, pallets come to a controlled
stop and avoid bumping on an abrupt cell power OFF. If a disable delay time is not
configured (
Section Disable Delay Time is set to zero [0]), the SuperTrak
conveyance platform shorts the coils to help decelerate the pallets on cell power
OFF, which minimizes how far the pallets coast.