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Chapter 5 AC drive Operating Instructions
5.5 Alarm Release and Fault Reset
1) Alarm release
The system provides an audible and visual alarm when a fault occurs. The user can click the
"Alarm Release" button to clear the sound of the alarm. If an alarm occurs and the high voltage
frequency control system is in operation, the system will continue to operate. If a new alarm occurs
after clicking "Alarm Release", the system will reactivate the audible and visual alarms.
2) Fault reset
When a fault occurs in the system, it can be reset by pressing the fault button on the touch
screen. If the fault still exists after the reset, and the fault is still the original fault, the
be dealt with in time, otherwise the AC drive will not start.
5.6 Normal Operation Procedure of Variable Frequency Speed
Control System
Before using the ACH200 high voltage variable frequency speed control system, please be sure
to read this section carefully to ensure that all operations will not affect the safety of the operator
and the equipment. When the system is in shutdown and needs to be started up for operation,
especially for the 1st start-up, the following steps should be followed:
◆ Local control, Digital given, Open-loop operation
1. Check the status of contactors and circuit breakers and various connections. Check the bypass
cabinet to confirm that KM1, KM2 and KM3 vacuum contactors are completely disconnected;
check the control cabinet to confirm that the control board connections, including the fiber optic
part of the interface are reliably connected. Check that all miniature circuit breakers in the control
cabinet are in the disconnected position (the circuit breakers in the control cabinet can be
disconnected without repeatedly starting after operation).
2. Power on the control circuit. Close all the circuit breakers in the control cabinet to determine the
system control power supply is normal.
3. Wait for the LCD touch screen to enter the main operation interface to ensure that there are no
faults.
ACH200 Series High Voltage Variable Frequency Speed Control System Operating Manual
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fault
needs to
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