92
7
MAINTENANCE
Table 7.1-
Hardware errors
ERROR
RESET
POSSIBLE CAUSE
E01
E02
E03
E04
E05
E06
E07
E08
Switch OFF/ON
the electronics
Or through key
Or through dig-
ital input for reset
Or through serial
Phase-fault in the three-phase network
Short-circuit or fault in the thyristor
Motor is not connected
Supply frequency with oscillation higher
than 10%.
Type of motor connection is wrong
The time of the ramp acceleration is
shorter than the actual acceleration time
since the function of the current limitation
is activated.
Ambient temperature higher than 40
0
C
(104
0
F) and current too high.
Starting time with current limitation higher
than specified by switch.
Too many of successive starts.
Fan is locked or defective
Set of P21, P25 and P26 too low relating to
the used motor
Load on the motor shaft too high
Too many of successive starts
Pump is dry operating
Load decoupled from the motor shaft
Short-circuit between phases
Motor shaft is locked
Network phase sequence inverted at the
input
Terminal board X2.3 and X2.5 is open (not
connected to +24Vdc)
Solution:
Connect a three-phase reactance in series with the motor
supply line. In this case, contact the manufacturer.
Note: Actuation form of the errors:
All errors E01...E08 switch Off the relay RL3 and disable
the thyristor firing and indicate the error on the display.
