Ecb Overload - Trane TR200 Operating Instructions Manual

Operation
• A start command can be initiated from local hand start, serial communications, or a remote auto start
signal through digital drive input terminals.
• In response to the start command, an output request is sent from the programmable drive relay to the
external equipment (to activate a valve or damper, for example).
• When a return run signal on the digital input is received, the motor is started in either drive or bypass,
depending upon which mode is active.
Run Permissive Function Setup
• See the drive manual or support materials for programming and wiring to the drive control terminals.
• Wire the output run request to the drive output terminals selected, and program the terminals for run
request.
• Wire the input run command to the drive input terminals selected, and program the terminals for run
permissive.
Disable Run Permissive
• Disable run permissive through the drive parameters and terminal programming.

ECB Overload

General Information
An overload device provides overcurrent protection for the motor when running in bypass. The thermally acti-
vated overload monitors motor current and trips to remove power to the motor if a sustained overcurrent
condition exists. A Class 20 overload is standard with a variable setting for motor current. Test and reset buttons
are also provided. In drive mode, the drive provides current sensing and trip protection. Fuses provide quick
action for high over current conditions.
Prior to Enabling Overload
• Verify that the overload current dial setting matches the motor FLA rating on the motor nameplate.
• If the motor FLA is greater or less than range of the current dial, reconfirm that the motor hp and voltage
are within the option panel (and drive) rating. If less than the FLA rating, replace the overload with
the correct size. If greater than the FLA rating, replace the panel with one of a proper rating.
NOTICE
CAUTION MOTOR DAMAGE! REPEATED ATTEMPTS TO RESET OVERLOAD CAN CAUSE MOTOR DAMAGE. COR-
RECT OVERLOAD CONDITION AND LET OVERLOAD AND MOTOR RETURN TO NORMAL OPERATING TEMPERA-
TURE BEFORE RESETTING. SEE MOTOR MANUFACTURER'S RECOMMENDATIONS FOR TIME BETWEEN START
ATTEMPTS. FAILURE TO CORRECT OVERLOAD CONDITION AND LET MOTOR RETURN TO NORMAL OPERATING
TEMPERATURE COULD CAUSE MOTOR DAMAGE.
TR200 Option Panel Operating Instructions
Electronically Controlled Bypass (ECB) Oper-
ation
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