Emerson SP1201 - Diagnostics and Troubleshooting; Trip Indications and Diagnosis

Safety
Information
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information
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design
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installation
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installation
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started
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Techn i cal
data
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sizing
Diagnostics
206 Unidrive SP Regen Installation Guide
www.controltechniques.com Issue Number: 2
12 Diagnostics
The display on the drive gives various information about the status of the
drive. These fall into three categories:
• Trip indications
• Alarm indications
• Status indications
12.1 Trip indications
If the drive trips, the output of the drive is disabled so that the drive stops
controlling the motor. The lower display indicates that a trip has occurred
and the upper display shows the trip.
Trips are listed alphabetically in Table 12-2 based on the trip indication
shown on the drive display. Refer to Figure 12-1.
If a display is not used, the drive LED Status indicator will flash if the
drive has tripped. Refer to Figure 12-2.
The trip indication can be read in Pr 10.20 providing a trip number. Trip
numbers are listed in numerical order in Table 12-3 so the trip indication
can be cross referenced and then diagnosed using Table 12-2.
N
Trips beginning with a number are given at the end of Table 12-2 where
the number is replaced with an X (1 ≤ X ≤ 8). The number indicates the
tripped module in a multi-module drive.
Example
1. Trip code 3 is read from Pr 10.20 via serial communications.
2. Checking Table 12-3 shows Trip 3 is an OI.AC trip.
3. Look up OI.AC in Table 12-2.
4. Perform checks detailed under Diagnosis.
Figure 12-1 Keypad status modes
Figure 12-2 Location of the status LED
N
For the above synchronisation failures also refer to: Pr 3.04 Regen restart mode.
Users must not attempt to repair a drive if it is faulty, nor
carry out fault diagnosis other than through the use of the
diagnostic features described in this chapter.
If a drive is faulty, it must be returned to an authorized
Control Techniques distributor for repair.
WARNING
NOTE
Keypad
display
Comms
code
No. Trip
3 OI.AC
Trip type
(OI.AC =
Instantaneou
s
output over
current)
Drive status
= tripped
Trip StatusAlarm Status
Healthy Status
Status Mode
S
tatus LED
Non flashing:
Normal status
Flashing:
Trip status
Below is the trip code which is specific to Unidrive SP in regen mode. These are in addition to the trips listed in Table 12-2 on page 207.
Table 12-1 Regen drive specific trip code
Trip Diagnosis
Ll.SYNC Regen drive failed to synchronise to supply
39
Pr 3.03 displays the reason for the synchronisation failure:
0: Tripped during synchronisation
1: Tripped while running
2: Line frequency too low (<30.0Hz)
3: Line frequency too high (>100.0Hz)
4: Error during synchronisation of PLL to supply
NOTE
NOTE