True Speed Does Not Meet Referenced Speed; Required Torque Cannot Be Obtained; It Takes Ionger Time To Start The Motor; "Up-To-Speed" Signal Is Not Output - Mitsubishi FREQROL-SFJ Maintenance Manual

(3) True speed does not meet referenced speed

Cause
Adjustment
improper
External speed
reference signal
improper
S command code
improper

(4) Required torque cannot be obtained . . . . .

Perform check in accordance with (l), (2) and (5).

(5) It takes ionger time to start the motor . . . . .

Cause
Load increased
(6) "Up-to-speed" signal is not output (for DIO interface with
NC) . . . . .
Cause
Trouble with
output circuit
of card SFJ-
CA1
(7) Data sent from the NC is not accepted . . . . . .
Interlock turns on because "up-to-speed" signal is not
output properly.
Checkup
Adjustment is not made for
S-analog speed reference.
Voltage of speed reference
signal from external signal
source does not change lin-
(Analog speed reference
signal input: CH30 - AGA)
BCD code is output instead ,Binary code should be
of binary code for S com-
mand (machine parameter
Checkup
Check the load condition.
Checkup
Check that "up-to-speed"
flag (external output in
DIAGNOSIS mode) turns on
when motor speed reaches
the preset speed.
If the flag does not turn
the output circuit is
defective.
Check the control sequence and perform
Remedy
Correct spindle para-
meter setting {PIG
display).
Remedy the external
speed reference signal
circuit.
used for S command.
(Set "Shin" to "1")
Remedy
Lighten the load.
Remedy
Replace the card SFJ-