- General Electric Computer Accessories User Manual

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• Chapter 2 Faults and Troubleshooting Innovation Series Medium Voltage GP Type - G Drives GEH-6385
No. Name Type Description
116 Ain 2 signal alarm Alarm
The Ain 2 signal alarm occurs when the level of analog input number 2
(variable Analog input 2) is too low. The alarm level is specified by parameter
Analog in 2 flt lev.
The alarm can occur only when parameter Analog in 2 flt mode is set equal to
Low level alarm. The fault is disabled for any other setting for parameter
Analog in 2 flt mode.
The main purpose of Ain 2 signal alarm is to detect a low 4-20 mA signal. The
low level may indicate that a signal is missing which is required for the drive to
operate properly.
Primary causes:
The analog input number 2 signal source is absent or unhealthy.
Possible configuration faults:
The analog input 2 alarm level, represented by parameter Analog in 2 flt lev, is
set incorrectly.
The analog input number 2 gain, represented by parameter Analog in 2 gain,
is set incorrectly.
The analog input number 2 offset, represented by parameter Analog in 2
offset, is set incorrectly.
The analog input number in 2 flt mode, represented by parameter Analog in 2
flt mode, is set incorrectly.
Possible wiring faults:
The connections between the analog signal source and ATBA terminal board
locations 44 (AI2P) and 46 (AI2N) are missing or damaged.
117 Ain 2 signal trip Trip The Ain 2 signal trip fault occurs when the level of analog input number 2
(variable Analog input 2) is too low. The trip fault level is specified by
parameter Analog in 2 flt lev.
The trip fault can occur only when parameter Analog in 2 flt mode is set equal
to Low level trip. The trip fault is disabled for any other setting for parameter
Analog in 2 flt mode.
The main purpose of Ain 2 signal trip is to detect a low 4-20 mA signal. The
low level may indicate that a signal is missing which is required for the drive to
operate properly.
Primary causes:
The analog input number 2 signal source is absent or unhealthy.
Possible configuration faults:
The analog input 2 trip fault level, represented by parameter Analog in 2 flt lev,
is set incorrectly.
The analog input number 2 gain, represented by parameter Analog in 2 gain,
is set incorrectly.
The analog input number 2 offset, represented by parameter Analog in 2
offset, is set incorrectly.
The analog input number in 2 flt mode, represented by parameter Analog in 2
flt mode, is set incorrectly.
Possible wiring faults:
The connections between the analog signal source and ATBA terminal board
locations 44 (AI2P) and 46 (AI2N) are missing or damaged.
118 Illegal req for sby Alarm The Illegal req for sby alarm occurs when a Standby command is issued and a
trip fault is present in the drive. The alarm may also occur when a Standby
command is issued at the same time a diagnostic test (cell test, pulse test,
autotune) is active.
Primary causes:
The external application layer issues an inappropriate standby request.