Trane Vertical Bypass/Non Bypass Panel ECB Advanced Fire Mode, ECB Fault Reporting, Operation

Electronically Controlled Bypass (ECB) Opera- tion

6.1.13 ECB Advanced Fire Mode

General Information

Drive operation in advanced fire mode is programmable. In the event the drive does not function, the motor is operated in bypass at full speed. Fire mode is intended to ignore common safety and overload inputs in emergency situations. The fire mode function is built-in. See the drive support materials for programmable options.

Prior to Enabling Fire Mode

•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 fire mode function. See the drive support materials for programming the fire mode function.

Operation

•Activation of fire mode is accomplished by programming the drive for fire mode.

•When activated, the ECB ignores safety circuits and motor overload.

•Fire mode is deactivated only when the command is removed or the unit fails.

•Fire mode status can be reported through serial communications or drive output.

Fire Mode Function Setup

•Program drive for fire mode.

•If required, program a drive output for fire mode status.

•See the drive support materials for programming the fire mode function.

6.1.14 ECB Fault Reporting

General Information

The ECB monitors bypass contactors M2 and M3 and reports failures to the drive for display and external reporting. The drive also monitors the ECB card for bypass communication errors.

Operation

ECB detected faults are reported by the drive in three ways: Warnings and alarms are displayed on the keypad display, through serial communication, or through output relays. The drive provides a form-C fault relay on terminals 01, 02, and 03. The fault contacts are fail-safe, meaning that if power is removed the contacts close and a fault condition is reported.

The drive monitors the ECB card communication and detects when communication stops. An ECB card failure or communication error could cause this. Contact Trane using the phone number on the back of this manual for technical support if this happens. The phone number can also be found on the label inside the panel cover.

Fault Reporting Function Setup

•Automatic function. No set up required.

BAS-SVX49A-EN 6-13