MHT260a (Engl.)9-9
(d) Cont (control signal) error
• Keypad panel display
• Contents of alarm
One and the same signal is allocated to several control input signal (CONTn) terminals on CN1 of amplifier.
• Cause, check and remedy
Since the same signal cannot be allocated to several terminals, any one setting should be selected. Forced stop (10), free-run (54), external
fault input (34) and "not assigned" (0) may be present on several terminals. The same signal can be allocated to several control output
terminals.
Remark : The cont error does not occur in case of overlap setting of the CONT always valid 1, 2 (system para. 87, 88) and the system para.
A signal set at the CONT always valid is valid at all times.
(e) Low voltage, undervoltage
• Keypad panel display
• Contents of alarm
The voltage supplied to the amplifier is below the minimum specified level.
• Cause, check and remedy
The supply voltage may have dropped on account of momentary failure, etc. or the power supply capacity may be poor.
Remark : The detection of undervoltage can be invalidated by setting of system para. 85 if the power supply condition is not good.
In this case, if free-run is selected by setting of system para. 84, the running can be continued at momentary failure.
(f) High voltage, overvoltge
• Keypad panel display
• Contents of alarm
The DC intermediate voltage in the amplifier is higher than the upper limit.
• Cause, check and remedy
Overvoltage (Hv)
Contact us
Power-factor correcting capacitor
is turned on/off on same line ?
Occurs when turning on power ? Power supply voltage may be higher than specified.
Consider using AC reactor.
Braking resistor is connected ? Consider using external braking resistor (in case of 0.2 [kW] max.).
Braking resistor is disconnected ? Check the resistance of braking resistor.
For resistance of braking resistor, see 10.7.
To Next Page
Loading...
