Note
Warranty-affecting alarms. Certain alarms can affect the lifetime of the frequency converter. Should one of these
ignored alarms occur whilst in Fire Mode, a log of the event is stored in the Fire Mode Log.
Here the 10 latest events of warranty-affecting alarms, fire mode activation and fire mode deactivation are stored.
Note
The setting in par.14-20
Reset Mode is disregarded in case of Fire Mode being active (see par. 24-0*, Fire Mode).
No: Description
Critical
Alarms
Warran-
ty
Affecting
Alarms
4 Mains ph. Loss x
7DC over volt x
8 DC under volt x
9 Inverter overloaded x
13 Over current x
14 Earth fault x
16 Short circuit x
29 Power card temp x
33 Inrush fault x
38 Internal fault x
65 Ctrl. card temp x
68 SafeStop x
24-1*
The frequency converter includes a feature, which can be used to automatically activate an external electro-
mechanical bypass in case of a trip/trip lock of the frequency converter or the event of a Fire Mode Coast (see
par.24-00
Fire Mode Function).
The bypass will switch the motor to operation direct on line. The external bypass is activated by means of one
of the digital outputs or relays in the frequency converter, when programmed in parameter group 5-3* or pa-
rameter group 5-4*.
NOTICE
Important! After enabling the Drive Bypass Function, the frequency converter is no longer Safety Certified (for using
the Safe Stop in versions, where included).
To deactivate the Drive Bypass at normal operation (Fire Mode not activated), one of following actions must be
carried out:
• Press the Off button on the keypad, (or program two of the digital inputs for Hand On-Off-Auto).
• Activate External Interlock via digital input
• Carry out a Power Cycling.
Note
The Drive Bypass cannot be deactivated if in Fire Mode. It can be deactivated only by either removing the Fire
Mode command signal or the power supply to the frequency converter!
When the Drive Bypass function is activated, the display on the keypad will show 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 will cut in the external bypass according to the below sequence:
Parameter Description
TR200 Programming Guide 239
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