Danfoss VLT Flow Drive FC 111 User Manual

Table 432: Option:
[0]
Trip+reset, critical
alarms
If this mode is selected, the drive continues to run, ignoring most alarms, even if doing so may dam-
age the drive. Critical alarms are alarms that cannot be suppressed but a restart attempt is possible
(infinity automatic reset).
[1]
Trip, crit. alarms
In case of a critical alarm, the drive trips and does not auto-restart (manual reset).
[2]
Trip, all alarms/
test
It is possible to test the operation of fire mode, but all alarm states are activated normally (manual
reset).
4.18.2 24-1* Drive Bypass
If a fire mode coast occurs (see parameter 24-00 FM Function), the drive includes a feature that can automatically activate an external
electro-mechanical bypass.
The bypass switches the motor to operation directly on line. One of the digital outputs or relays in the drive activates the external
bypass, when programmed in parameter group 5-3* Digital Outputs or parameter group 5-4* Relays.
N O T I C E
The drive bypass cannot be deactivated if in fire mode. It is deactivated only by either removing the fire mode command signal or
the supply to the drive.
When the drive bypass function is activated, the display on the LCP shows the status message Drive bypass. This message has a
higher priority than the fire mode status messages. When the automatic drive bypass function is enabled, it cuts in the external
bypass according to the following illustration.
e30ba546.10
Oper
a
tion
A lar
m
R
ela
y
"B
ypass"
On dela y (P5-41)
Speed
ON
OFF
A ut o R esets A ut o R eset Disabled
B
ypass
D ela
y
T
imer
P24-11
A
lar
m
Read the status in the extended status word 2, bit number 24.
24-10 Drive Bypass Function
Default value: [0] Disabled
Parameter type: Option
2-setup: 1 setup
Conversion index: -
Data type: u_int8
Change during operation: True
This function allows to disable or enable drive bypass in fire mode.
Table 433: Option:
[0]
Disabled
Disable the function.
[2]
Enabled (Fire Mode only)
If the timer expires before reset attempts have completed, the bypass function operates a trip at
critical alarms, coast, or bypass delay timer.
24-11 Drive Bypass Delay Time
Default value: 0 s
Parameter type: Range
2-setup: 1 setup
Conversion index: 0
Data type: u_int16
Change during operation: True
AU363928304090en-000101 / 130R0982182 | Danfoss A/S © 2021.07
Parameters
VLT® Flow Drive FC 111
Programming Guide

Danfoss VLT Flow Drive FC 111 Specifications

General

Brand	Danfoss
Model	VLT Flow Drive FC 111
Category	DC Drives
Language	English