- General Electric Computer Accessories User Manual

GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 2 Faults and Troubleshooting •
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• 2-23
No. Name Type Description
114 Ain 1 signal alarm Alarm
The Ain 1 signal alarm occurs when the level of analog input number 1
(variable Analog input 1) is too low. The alarm level is specified by parameter
Analog in 1 flt lev.
The alarm can occur only when parameter Analog in 1 flt mode is set equal to
Low level alarm. The alarm is disabled for any other setting for parameter
Analog in 1 flt mode.
The main purpose of Ain 1 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 1 signal source is absent or unhealthy.
Possible configuration faults:
The analog input 1 alarm level, represented by parameter Analog in 1 flt lev, is
set incorrectly.
The analog input number 1 gain, represented by parameter Analog in 1 gain,
is set incorrectly.
The analog input number 1 offset, represented by parameter Analog in 1
offset, is set incorrectly.
The analog input number in 1 flt mode, represented by parameter Analog in 1
flt mode, is set incorrectly.
Possible wiring faults:
The connections between the analog signal source and ATBA terminal board
locations 38 (AI1P) and 40 (AI1N) are missing or damaged.
115 Ain 1 signal trip Trip The Ain 1 signal trip fault occurs when the level of analog input number 1
(variable Analog input 1) is too low. The trip fault level is specified by
parameter Analog in 1 flt lev.
The trip fault can occur only when parameter Analog in 1 flt mode is set equal
to Low level trip. The trip fault is disabled for any other setting for parameter
Analog in 1 flt mode.
The main purpose of Ain 1 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 1 signal source is absent or unhealthy.
Possible configuration faults:
The analog input 1 trip fault level, represented by parameter Analog in 1 flt lev,
is set incorrectly.
The analog input number 1 gain, represented by parameter Analog in 1 gain,
is set incorrectly.
The analog input number 1 offset, represented by parameter Analog in 1
offset, is set incorrectly.
The analog input number in 1 flt mode, represented by parameter Analog in 1
flt mode, is set incorrectly.
Possible wiring faults:
The connections between the analog signal source and ATBA terminal board
locations 38 (AI1P) and 40 (AI1N) are missing or damaged.