Basic application 33
4 Basic application
4 Basic application..............................................................................................33
4.1 Basic speed or torque control ............................................................................................... 34
4.2 Main Contactor operation .................................................................................................... 35
4.2.1 Contactor control questions and ans wers ........................................................................... 35
4.3 Main contactor wiring options .............................................................................................. 37
4.3.1 Main contactor isolating A C stack supply ........................................................................... 37
4.3.2 Main contactor isolating A C stack and auxiliary supplies....................................................... 37
4.3.3 Main contactor isolating DC armature ................................................................................ 38
4.3.4 Using pushbuttons for simple STOP / ST ART (Coast to stop) ................................................ 39
4.3.5 Using pushbuttons for STOP / START (With ramp to stop, jog and slack take up) .................... 40
4.4 ESSENTIAL pre-start checks ................................................................................................ 41
4.4.1 PO WER ENGINEERING ..................................................................................................... 41
4.4.2 MECH ANIC AL ENGINEERING ............................................................................................ 41
4.5 C ONTROL ENGINEERING COMMISSIONIN G PRO CEDURES ...................................................... 42
4.5.1 Quick start calibration...................................................................................................... 42
4.5.2 Quick start calibration step by step ................................................................................... 43
4.5.3 Quick start current loop AUTO TUNE .................................................................................. 43
4.5.4 PASSIVE MOT OR defaults / Using passive motor menu for small test motors .......................... 44
Overvie w of initial commissioning procedure
Always check safety systems thoroughly and observe local safety codes.
The suggested strategy is to start in the safest possible mode of operation and progressively exercise each
element of the system until full functionality has been achieved.
This chapter is a step by step approach up to 4 in this list.
1) Check installation and supplies. (L1/2/3, EL1/2/3 and control supply) and all safety systems.
2) Calibrate PL/X to match motor. (Use Armature voltage feedback below base speed for first run).
(Save calibration parameters)
3) Insert firebar (electric heating element, high w attage resistor, e.g. 4 Ohms 1K w) in series with armature
and check operation of contactor and field.
4) Remove firebar, perform A UT OT UNE and run motor up to base speed.
Check operation of feedback transducers and mechanical components.
5) Introduce tacho or encoder feedback and proceed to field w eakening if required.
6) Start implementing more complex applications blocks.
7) Check safety systems thoroughly and observe local safety codes.
INCORRECT CONTROL OF THE MAIN CONTACTOR IS
THE MOST COMMON FORM OF PROBLEM. PLEASE
SEE SECTIONS 4.2 and 4.2.1 FOR FURTHER HELP.
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