SSD 605C, Product Manual

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Operating the Inverter
4-1
605C Frequency Inverter
4
O
PERATING THE
I
NVERTER
By default, the Inverter will operate in Remote Start/Stop and Remote Speed Control. Analog
and digital inputs and outputs are selected to control the unit.
The Inverter will operate as an open-loop Inverter. No set-up or tuning is required. It is
programmed to control an induction motor of equivalent power, current and voltage rating to
the Inverter.
In this chapter, refer to “Control Philosophy”, “Start-up Routines”, “Remote Control using
Control Terminals (default set-up)” and “The Start/Stop Mode Explained”.
Pre-Operation Checks
WARNING!
Wait for 5 minutes after disconnecting power before working on any part of the
system or removing the terminal cover from the Inverter.
Initial checks before applying power:
•
Mains power supply voltage is correct.
•
Motor is of correct voltage rating and is connected in either star or delta, as appropriate.
•
Check all external wiring circuits - power, control, motor and earth connections.
Note: Completely disconnect the Inverter before point to point checking with a buzzer, or when
checking insulation with a Meggar.
•
Check for damage to equipment.
•
Check for loose ends, clippings, drilling swarf etc. lodged in the Inverter and system.
•
If possible check that the motor can be turned freely, and that any cooling fans are intact and
free from obstruction.
Ensure the safety of the complete system before the Inverter is energised:
•
Ensure that rotation of the motor in either direction will not cause damage.
•
Ensure that nobody else is working on another part of the system which will be affected by
powering up.
•
Ensure that other equipment will not be adversely affected by powering up.
Prepare to energise the Inverter and system as follows:
•
Remove the supply fuses, or isolate using the supply circuit breaker.
•
Disconnect the load from the motor shaft, if possible.
•
If any of the Inverter’s control terminals are not being used, check whether these unused
terminals need to be tied high or low. Refer to Chapter 11: “Technical Specifications”-
Control Terminals.
•
Check external run contacts are open.
•
Check external speed setpoints are all zero.
Re-apply power to the Inverter and system
The Inverter has Macro 1 installed as the factory default. If you are controlling the Inverter in
Remote control, refer to Chapter 15: “Application Macros” for details of the most suitable
macro for your application.
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