IMO SD1 Series - 4.2 Keypad Display

SD1 Series Inverters Installation Guidelines
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drive output.
2: STO indication delay: Time interval between trigger the STO function and STO output state
indication.
3.3.3 STO function installation checklist
Before installing STO, please perform self-inspection according to below table to ensure the
effectiveness of STO.
Item
□
Ensure that the drive can be run and stopped freely during commissioning.
□
Stop the drive (if running), cut off input power and isolate the drive from the power cable
via the switch
□
Check STO circuit connection against circuit diagram.
□
Check that the shield of STO input cable is connected to +24V reference GND COM
□
Power on
□
Test the operation of STO when the motor is stopped:
•
Give a stop command to the drive (if running) and wait until the motor shaft is at
standstill.
•
Activate STO function and give a start command to the drive, ensure the motor stays
at standstill.
• Inactivate STO circuit.
□
Restart the drive and check if the motor runs normally
□
Test the operation of STO function when the motor is running:
• Start the drive and ensure the motor runs normally.
• Activate STO circuit.
• The drive reports STO fault (refer to fault and countermeasure in page 108
), ensure
that motor coast to stop and stops rotation.
• Inactivate STO circuit.
□
Restart the drive and check if the motor runs normally
3.4 Layout Protection
3.4.1 Protecting the inverter and input power cable in short-circuit situations
Protect the inverter and input power cable in short circuit situations and against thermal
overload.
Arrange the protection according to the following guidelines.