Ecb Hand/Off/Auto - Trane TR200 Operating Instructions Manual

ECB Hand/OFF/Auto

General Information
The HAND ON, OFF RESET, and AUTO ON keys on the drive keypad control both the drive and bypass (see
keypad
figure earlier this chapter). The DRIVE BYPASS key allows the user to locally select drive or bypass mode
of operation. It does not necessarily start or stop the motor.
Prior to Enabling Hand/Off/Auto
• 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.
Programming Key Functions
For the OFF RESET and DRIVE BYPASS keys, the table below lists the parameters that select functions for the
control keys. A password protection can also be assigned in these parameters.
Operation
• HAND ON allows the user to start the motor locally from the keypad. Press the HAND ON to start the
motor locally either in drive or bypass mode.
• OFF RESET allows the user to stop the motor locally from the keypad. Press the OFF RESET to stop the
motor locally, either in drive or bypass mode.
• AUTO ON allows the motor to be started remotely from digital input or serial communications. Press
AUTO ON to activate remote motor start and stop from a digital input or serial communications in
drive or bypass mode.
• Press the DRIVE BYPASS key to initiate the display to toggle between drive or bypass mode of operation.
Press the OK key to accept the change or CANCEL key to cancel the action.
Parameter number
00-44
00-45
Table 6.6
ECB Mode of Operation
General Information
The ECB has four modes of operation: drive, bypass, auto bypass, and test. The mode is selected through the
drive keypad and display. Bypass mode select can be accessed directly by pressing the DRIVE/BYPASS key on
the keypad.
Prior to Enabling Mode of Operation
• Complete the start-up procedure and verify motor rotation direction in bypass is correct and that the
system is ready in all respects for continuous full speed operation in bypass.
• Press the OFF/RESET key on the drive keypad to prevent operation of the motor.
Operation
Drive mode.The motor is connected to and controlled by the drive. Contactors M1 (optional) and M2 are closed
while contactor M3 is open. (Contactor M1 for test mode is only present in the 3-contactor configuration.) The
motor will not run until a run command is present.
TR200 Option Panel Operating Instructions
Electronically Controlled Bypass (ECB) Oper-
Key
Off / Reset This disables or enables the [Off / Reset] key on
keypad. (0) disabled, (1) enabled, (2) password Default
value is (1) enabled.
Drive / bypass This disables or enables the [Drive Bypass] key on
keypad. (0) disabled, (1) enabled, (2) password Default
value is (1) enabled.
Function
ation
47