Ecb Advanced Fire Mode; Ecb Fault Reporting - Danfoss VLT Option Panel Instruction Manual

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 emer-
gency 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 accom-
plished by programming the drive for
fire mode.
• When activated, the ECB ignores
safety circuits and motor overload.
• Fire mode is deactivated only when
removed or fuses blow.
• 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.
48

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 communi-
cation and detects when communication
stops. An ECB card failure or communication
error could cause this. Contact Danfoss
using the phone number on the back of this
manual for technical support if this happens.
Fault Reporting Function Setup
• Automatic function. No set up
required.