BENSHAW RSi GM2 Series - Page 250

Troubleshooting
240
GM2 Series VFD
890054-00-00
Keypad
Display
Name
Type
Description
Out Phase
Open
Latch
Inverter output has one or more phases in an open circuit
condition. Operates when bit 1 of Pr.05 is set to 1.
In Phase Open
Latch
Inverter input has one or more phases in an open circuit
condition. Operates only when bit 2 of Pr.05 is set to 1.
Inverter OLT
Latch
Inverter has protected itself from overload/overheating
based on inverse time-limit thermal characteristics.
Allowable overload rates for the inverter are 120% or
150% for 1 min based on application and 200% for 4
sec.
No Motor Trip
Latch
Motor is not connected during inverter operation.
Operates based on Pr.32 and Pr.33 settings.
Relay Open Trip
Latch
Occurs when the DC voltage relay is not operating when
power is applied. The Pr.90 code must be reset to
operate. Detected only in 2 HP, 3 HP and 5 HP, 480V
models.
Over torque
trip1
Latch
Occurs when the output current is higher than the level
set in Ou-68. Operates when OU.67 is set to 3, 4.
Over torque
trip2
Latch
Occurs when the output current is higher than the level
set in OU.71. Operates when OU.70 is set to 3, 4.
Under torque
trip1
Latch
Occurs when the output current is lower than the level set
in OU.68. Operates when OU.67 is set to 7, 8.
Under torque
trip2
Latch
Occurs when the output current is lower than the level set
in OU.71. Operates when OU.70 is set to 7, 8.
* The Ground Trip (GFT) feature is not provided in products under 5 HP (4.0 kW) except for 3 HP
and 5 HP, 200V. An over current trip (OCT) or over voltage trip (OVT) may occur during low
resistance grounding.
Protection Functions Related to Inverter Internal Circuits and External Signals
Keypad
Display
Name
Type
Description
Over Heat
Latch
Temperature of the inverter heat sink exceeded the trip
level.
Over Current2
Latch
The DC Link in the inverter detected excessive short
circuit current.
External Trip
Latch
An external fault signal is activated at the digital input
terminal. Related parameter ln.65–69 to 4 (External Trip)
to enable external trip.
BX
Level
Inverter Output Disable. An external sgnal is activated at
the digital input terminal. Related parameter In.65–69 to
5 (BX) to enable inverter output disable function.
H/W-Diag
Fatal
Displayed when an error is detected in the memory
(EEPRom), analog-digital converter output (ADC Off
Set), or CPU watchdog (Watch Dog-1, Watch Dog-2).
• EEP Err: An error in reading/writing parameters
due to keypad or memory (EEPRom) fault.
• ADC Off Set: An error in the current sensing
circuit (U/V/W terminal, current sensor, etc.).
NTC Open
Latch
Error is detected in the temperature sensor of the
Insulated Gate Bipolar Transistor (IGBT).