BENSHAW RSi SG Series, Instruction Manual

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Chapter 7 – Trouble Shooting & Maintenance
7-2
LCD
Keypad Display
Protective
Function
Description
Output Phase Open
Output Phase
Open
The drive turns off its output when the one or more of the output phases
(U, V, W) is detected open. Open is defined as less than half of AFN-
44, No Load Current. Also, if FUN-57 and FUN-58 are set, open is
determined as less than FUN-58 level for 1 second.
Input Phase Open
Input Phase
Open
The drive turns off its output when the one or more of the input phases
(R, S, T) is detected open.
BX
BX Protection
(Drive Disable)
Used as a drive disable function. The drive instantly turns off the output
when the BX terminal is activated (ON).
HW-Diag
Inverter H/W
Fault
This fault (HardWare fault) is indicated when there is a component
failure internal to the drive. Examples: control circuitry (Wdog error,
EEP error), NTC open, Fan Lock, Blown fuse. Also, occurs when no
motor is connected. See “No Motor Trip” fault.
COM Error
CPU Error
Communication
Error
This fault is displayed when the drive cannot communicate with the
keypad.
Inv. OLT
Inverter
Overload
The drive turns off its output when the output current is more than the
rating of the drive.
Standard Duty: 110% for 1 minute, 130% for 4 seconds.
Heavy Duty: 150% for 1 minute, 162.5% for 4 seconds.
NOTE:
See Overload Retention at bottom of table.
NTC open NTC Open
This fault is displayed when the drive internal thermistor is opened
(faulty or disconnected).
Ext. OHT
External Over
Heat Trip
This fault is displayed when the programmed trip temperature from an
externally connected thermistor (PTC or NTC) is exceeded.
Fan Lock
(150 HP and above)
Fan Loss
The drive has detected a loss of cooling fan(s).
Fuse Open
(40 HP and above)
High Current
(Blown Fuse)
Internal fuse detector has activated indicating a blown DC Bus fuse.
No Motor Trip Low Current Drive has detected low current or no current flow out of drive.
LOV
LOI
LOA
LOR
Lost Cmd
Frequency
Reference is
Lost
Based on I/O-18 setting, there are four modes of operation after a Loss
of Frequency Reference: continuous operation, free run, decelerate to a
stop and fault.
LOV
: Displayed when ‘V1’ analog frequency reference is lost.
LOI
: Displayed when ‘I‘ analog frequency reference is lost.
LOA
: Displayed when pulsed frequency reference is lost.
Lost Cmd:
Displayed when any analog signal is lost and I/O-18 is set
to “protection”.
Based on I/O-92 setting, there are three modes of operation after a Loss
of Communications: continuous operation, free run and decelerate to
stop.
LOR
: Displayed when communications frequency reference is lost.
Over Lap (Flashing)
Programming
Error
Displayed when more than one digital input terminal (M1 – M8) is
programmed to the same function.
Keypad FLT Loss of Keypad Keypad disconnected when DRV-26 set to Fault.
To reset fault, Press
RESET
key, close RST-CM terminals or cycle the input power.
Overload Retention:
The following faults cannot be reset immediately. Overload, E-thermal and Inverter
Overload. A cool down period of approximately one minute is required before the drive can be reset.