Elspec EQUALIZER-ST, Руководство пользователя и инструкция по установке, Страница: 95 / 121

95
www.elspec-ltd.com | December 2014 | SMX-0609-0101
User Manual | EQ-ST | V15

Automatic Reset Delay: The system repeats the self-test on defective groups only, after 1 minute. If the
same groups are detected faulty again, the test is repeated automatically after 2 minutes and the interval
is doubled on each test until the maximum of 10 repeats is reached (with a delay of 512 minutes = 8.5
hours). If the result of each test is not identical to the previous one the interval between tests is reset to 1
minute;
H
OW TO
R
EPAIR
(11)
If there is more than one switching module in the system, try firing this group using another
switching module by changing the wiring of the firing cable. If the faulty group number is
changed, change the switching module. In some cases it may be enough to change only the
appropriate SCRs inside the switching module. If the faulty group number is not changed, replace
the firing cable and/or the controller.
(12)
Replace the switching module.
(13)
Replace the controller.
(14)
N
ETWORK
S
YNCHRONIZATION
E
RROR
(
E6
)
P
OSSIBLE
C
AUSES
The system is equipped with a sophisticated algorithm designed to synchronize the electrical network. In
some cases the network is extremely unstable and even this excellent technique cannot synchronize it, or in
other instances a fault occurred inside the system itself. Causes:

Monitored Signals: L1-L2 Voltage (in three phase system);

Averaging/Delay: 500 Consecutive network cycles of internal PLL synchronization error;

Limits: Internal PLL failed to synchronize to signal;
The next steps:

Action A: The system is disconnected;

Error Reset: Runs automatically;

Automatic Reset Delay: For 250 consecutive network cycles consisting of error-free PLL operations;
H
OW TO
R
EPAIR
(1)
Verify the controller receives in its rear connector all the pertinent voltages. If the system is
connected in Delta mode (i.e., without neutral connection) the neutral terminal must be
connected to ground terminal.
O
VER
T
EMPERATURE
(
E7
)
The controller receives the over temperature signal in its firing interface: -

Monitored Signals: External Thermostats;

Averaging/Delay: Immediate;

Limits: Depends on external thermostats;
The next steps: