9
JEP0-IL9556
3. Numerical display function
By switching the position of the indicator select
switch, following items can be displayed on the
numerical display LED.
①
Voltage measurement
The display shows the value of input voltage. The
display range is from 55V to 130V.
(If input voltage is less than 55V, the display
goes out. If input voltage is more than 130V, the
error message
Ｏ
.
Ｆ
. is displayed.)
②
Pickup
When input voltage is less than setting value,
Ｕ
. is displayed.
This function can be used for operation value
tests.
③
Setting value
It displays the setting condition of the relay
including operation value, operating time, and
frequency.
4. Fault record function
①
Display of fault records
When a fault occurs, the relay outputs the
operating signal, and at the same time the input
voltage value is recorded. When the indicator
select switch is set to the position of fault
record, the records are displayed starting from
the latest record to the oldest one at
approximately 2 second intervals. The relay can
save the newest five phenomena.
The records are saved in the non-volatile memory,
therefore the records can be read again after
shutting the power off.
②
Clearing of fault records
Set indicator select switch to "CLEAR FAULT REC."
and hold for 5s or more, then
Ｏ
.
Ｋ
. is displayed
and all of the fault record are cleared.
5. Display function of setting change
When a setting is changed, the setting value after
changing is displayed for approx. 3s preferentially.
6. Detection function of frequency difference
If there is a difference between setting frequency
and injected frequency, the alert message
Ｆ
.
Ｅ
.
is displayed.
The detection is executed one second after the
relay is activated or the frequency setting is
changed.
If the alert message
Ｆ
.
Ｅ
. is displayed, please
check the frequency setting switch.
Internal connection diagram
P1
P2
Continuous
monitoring
Power circuit
monitoring
Operation
indicator
RUN indicator
X1
c2
a2
Level
assessment
Power supply
b2
X0
c1
a1
b1
Output
contact
X0
X1
Output
contact
Output contact
Output contact
When the undervoltage element operates, the state of the
output contacts (X0, X1) are as follows:
b contact (c1
～
b1, c2
～
b2): ON (close)
a contact (c1
～
a1, c2
～
a2): OFF (open)
When the operating voltage setting switch is set to the
LOCK, the b contacts open when RUN LED is turned on. If
input voltage is turned to zero from this state, the b
contacts remain open.
Factory settings of b contacts (c1
～
b1, c2
～
b2) are set
to ON (close) state, however, shock during transportation
may turn the contacts to OFF (open) state.
Therefore, please check conduction state of the contacts
before use.
Fig. 4-2 Internal connection diagram
