—————— TPD32-EV ——————
202
Figure 1: SCR test
Figure 2: Example. Open SCR (white) displayed with GF_eXpress Tool
Figure 3: Example. SCR shorted (red) displayed with GF_eXpress Tool
Open SCR thr
Setting of current limit for detection of open SCR. .
n
ote
!
If the current flowing through the SCR module is below 50% (factory setting) of the average
level measured in the period, the message SCR open: “Open F <…>” is shown.
Higher settings increase the sensitivity of measurement. (Example: a setting of 90% is very
sensitive but could generate false detections of open SCRs.)
1527 Open test act Setting
Drive Status
1525 SCR diag status
Displayed on TPD32-EV Keypad
Open test act = Disable Drive
Open W <SCR> @ 50% of Internal Integer value
-
DISABLED
Open F <SCR> @ 100% of Internal Integer value
Open SCR
Open test act = Ignore
Open W <SCR> @ 50% of Internal Integer value
-
IGNORE
Open F <SCR> @ 100% of Internal Integer value
-
Open test act = Warning
Open W <SCR> @ 50% of Internal Integer value
-
WARNING
Open F <SCR> @ 100% of Internal Integer value
Open SCR
n
ote
- i
nternal
integrator
At each line frequency period, the software compares the current that flows when the SCRs are
active to the average current in the period, increasing or decreasing the value of the integrator
if the current flowing through the SCR is below or above, respectively, that of the period based
on the set limit.
Example:
- Limit at 50% (default) - IPA 1528 Open SCR thr
The current flowing through the SCR is 30% of the average in the period --> The integrator is
increased by 20 counts.
The current flowing through the SCR is 60% of the average in the period --> The integrator is
Содержание TPD32-EV-...-2B
Страница 1: ... Instruction manual Industrial Application DC drives TPD32 EV ...
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