5.4.5 Fault Mode - Toshiba 18 - 1250 A Instruction Manual

TE Series
Example: Figure 5.4.5
Viewing a Fault and History
[ PLA.] Indicates that there was a Phase Loss during
Acceleration. The Decimal point on the right
signifies that this is the current fault.
Press the UP Arrow key
[ iBc] Displays the previous fault, a Phase Imbalance
during Constant Speed (running)
[ oLc] Displays the oldest fault, an Over Load trip
during Constant speed (running).
[rSt ] Flashes once to indicate a successful Reset of
the current fault. If it cannot be reset, the
display will read [ inH ] for Inhibited.
[0000.] Returns to Default Display, indicating that the
unit is ready to re-start.
Figure 5.4.5.b
Remote Reset Connection
TB-2
1
2
NC NO. C
NC NO. C
Remote Reset
Control Pow er
Supply

5.4.5 Fault Mode

The Fault Mode Display provides information to the operator when a
fault occurs and allows the operator to review fault history. Refer to
Section 7 for details. Fault codes are three-digits in length and are
displayed in alpha characters. The first and second characters (reading
left to right) are the initials for the applicable English-language fault
name. The third or right-most character can be either A, c, or d to
denote when the fault occurred. "A" denotes Acceleration. "c" denotes
Constant speed. "d" denotes Decel.
Press the UP Arrow key
Press [RESET] key
This Fault History can only be accessed during a fault condition. While
the active fault number is being displayed, use the Up and Down Arrow
keys to scroll through the Fault History. An additional Fault History
complete with Time and Date stamps is also available for viewing at any
time in F085 through F093.
5.4.5.a
Once a fault condition has been corrected, pressing the Reset key
will return the readout to the Status Display mode. To reset faults,
press the [RESET] key on the keypad. Alternatively, most faults will
reset upon removal and return of control power. Over Load trips will
NOT be reset in this way unless sufficient time has passed for the
Thermal Register to regain sufficient capacity for a successful
3 1
restart (see section 3.1).
NO. C A1 A2
5.4.5.b
Because most trips can be reset by removing control power, remote
reset can be accomplished this way. A NC remote contact (or push-
button) can be placed in the control power supply to A1 or A2 and
opened to facilitate a trip reset. See figure 5.4.5.b for a suggested
connection.
Digital Solid State Soft Starters 18 – 1250A
Press
Key...
RESET
Resetting Faults
Remote Reset
28
Display
M eans...
Shows...
Fault Display:
PLa.......
Phase Loss
on Acceleration
Previous Fault:
Ibc
Phase Imbalance
Oldest Fault:
oLc
Over Load at
Constant Speed
Reset Indication
r st
(flashes once)
Return to
0000.
Default Display
Figure 5.4.5:
View ing Faults