Trane TR200 - Page 249

NOTE
Warranty-affecting alarms. Certain alarms can affect the
lifetime of the adjustable frequency drive. I
f one of these
ignored alarms occur while in fire mode, a log of the
event is stored in the fire mode l
og.
Here the 10 latest events of warranty-affecting alarms,
fire mode activation and fire mode deactiva
tion are stor-
ed.
NOTE
The setting in par.14-20 Reset Mode is disregarded if fire
mode is active (see par. 24-0*, Fire Mode).
No: Description
Critical
Alarms
Warran-
ty
Affecting
Alarms
4 Line ph. Loss x
7 DC overvolt x
8 DC undervolt x
9 Inverter overloaded x
13 Overcurrent x
14 Ground fault x
16 Short circuit x
29 Power card temp x
33 Soft-charge fault x
38 Internal fault x
65 Ctrl. card temp x
68 SafeStop x
24-1*
The adjustable frequency drive includes a feature, which can be used to automatically activate an external elec-
tro-mechanical bypass in case of a trip/trip lock of the adjustable frequency drive 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 adjustable frequency drive, when programmed in parameter group 5-3*
or parameter group 5-4*.
NOTE
Important! After enabling the Drive Bypass function, the adjustable frequency drive 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 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 adjustable frequency drive!
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
4-212 TR200 Programming Guide