Danfoss VLT FC 102 Programming Manual page 547

Programming Guide | VLT® HVAC Drive FC 102
After enabling the drive bypass function, the Safe Torque Off function (where included) does not comply with standard EN 954-1,
Cat. 3 installations.
This parameter determines the circumstances that activate the drive bypass function.
Option Name
[0]* Disabled
[1] Enabled
[2] Enabled (Fire M Only)
24-11 Drive Bypass Delay Time
Default value:
0 s
Setup: 2 setups
Data type:
Uint16
Programmable in 1 s increments. Once the bypass function is activated in accordance with the setting in parameter 24-10 Drive Bypass
Function, the bypass delay timer begins to operate. If the drive has been set for several restart attempts, the timer continues to run while
the drive tries to restart. Should the motor have restarted within the time period of the bypass delay timer, the timer is reset. Should the
motor fail to restart at the end of the bypass delay time, the drive bypass relay programmed for bypass in parameter 5-40 Function Relay
is activated. If a relay delay has also been programmed in parameter 5-41 On Delay, Relay, [Relay] or parameter 5-42 Off Delay, Relay
[Relay], this time must also elapse before the relay action is performed. Where no restart attempts are programmed, the timer runs for
the delay period set in this parameter and activates the drive bypass relay, which has been programmed for bypass in parameter 5-40
Function Relay. If a relay delay has also been programmed in parameter 5-41 On Delay, Relay or parameter 5-42 Off Delay, Relay [Relay],
this time must also elapse before the relay action is performed.
24-4* Fire Mode 2
6.24.3
24-40 Fire Mode Ramp Up Time
Default value:
Size related
Setup: All setups
Data type: Uint32
This ramp time is used for acceleration while fire mode is active.
24-41 Fire Mode Ramp Down Time
Default value:
Size related
© 2024.10
NOTICE
Description
If in normal operation, the drive bypass function is activated
under the following conditions:
• If there is a trip lock or a trip.
• After the number of reset attempts programmed in parameter
14-20 Reset Mode.
• If the bypass delay timer (parameter 24-11 Drive Bypass Delay)
expires before reset attempts have been completed.
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Parameter Descriptions
Range, 0 - 600 s
0
True
Range, 1.0 - 3600 s
-2
True
Range, 1.0 - 3600 s
AU430028034214en-001901 / 130R0310 | 547