12
Fan Control Application Manual
AC30V series Variable Speed Drive
PNO
Parameter Descriptions
1966
FM Last Activated
A Data and Time diagnostic that records the last time that the Fire Mode was activated. This may be used to validate that the fire mode
has been tested. The value is preserved in non-volatile memory. A Real Time Clock (RTC) option must be fitted for the timestamp.
1967
FM Activation Count
This diagnostic records the number of activations of the fire mode. This may be used to validate that the fire mode has been tested.
The value is preserved in non-volatile memory.
Functional Description
When Fire Mode is activated, the Drive will attempt to run at the speed set by the Fire Mode
Setpoint
parameter even if the Drive was not
running at the time. This is regardless of whether in Remote or Local sequencing mode.
Caution
If the Drive is powered-up with the Activate input TRUE, the Drive will run immediately without warning.
The only reasons that the drive will not run are:
•
Level
is set to DISABLED
•
Setpoint
is zero
•
The Coast Stop input is activated.
•
The STO circuit is activated.
•
An enabled trip source becomes active.
•
A hardware fault
Caution
Fire Mode does not override the standard Ramp features. Specifically
0497
Ramp Hold
can prevent the setpoint changing to the Fire
Mode
Setpoint
value.
The following table summarizes which trips are disabled in the two modes of operation. Also shown are those trips which are designed to protect
the drive.
Caution
Disabling the Drive Protection trips will invalidate the drive’s warranty.
Selecting PARTIAL mode leaves the drive protection features enabled. Selecting FULL mode disables some of the drive protection
features.
Caution
Regardless of the setting of
Level
, activating Fire Mode may cause damage to the motor or attached equipment.
www.comoso.com
