Ecb Run Permissive - Trane TR200 Operating Instructions Manual

Electronically Controlled Bypass (ECB) Oper-
ation
• If the timer completes its cycle before the fault clears, the panel trips into bypass mode and the motor
runs at constant full speed from line input voltage.
• In bypass, the motor will stop:
- if the drive receives a remote stop command
- local stop (OFF key) on the drive keypad is pressed
- a remote start command is removed
- a safety is open
- motor overload is tripped
• Once auto bypass is activated, the only way to reset the unit back to drive mode is by operator inter-
vention. Ensure that the fault has been cleared, then press the BYPASS key on the drive keypad and
select drive mode.
Auto Bypass Function Setup
Enable auto bypass by changing parameters in group 31 in the drive extended menu.
• 31-01, Bypass start time delay. Setting the timer at anything other than 0 time activates start delay in
bypass. Leave at 30 second default or set as desired up to 60 seconds.
• 31-02, Bypass trip time delay. Setting the timer at anything other than 0 time activates auto bypass.
Leave at 5 second default or set as desired up to 60 seconds.
Illustration 6.1: Bypass Trip Time Delay
Illustration 6.2: Drive Display with Bypass Start Time Delay Active

ECB Run Permissive

General Information
With run permissive active, the drive sends a run request and waits for a remote response to before notifying
the motor to start. The response indicates the system is safe to operate. Run permissive operates from the
keypad hand/off/auto select in drive or bypass mode. Run permissive is enabled by programming in the drive
parameters.
Prior to Enabling Run Permissive
• Complete the start-up procedure to verify motor rotation direction in bypass is correct and that the
system is ready in all respects for continuous full speed operation in bypass.
• Verify that the drive is programmed for the run permissive function. See the drive support materials for
programming the run permissive function.
50 TR200 Option Panel Operating Instructions