Page 250 - CITS - Electrician - Trade Practical

ELECTRICIAN - CITS

TASK 1 :
1. Read and interpret and note down the name plate details of the given AC drive.
2. Remove the cover plate for power terminal if fitted.

Note : Do not open the cover if power to the drive is ON
3.Identify the input/output power terminal and control terminals and note down in Table1
Table 1

Terminal symbol Terminal function (for reference) Identify corresponding / similar terminals
available to VFD at your institute
(R/L1, S/L2, T/L3) Mains power terminals
(U, V, W) Output terminals for main circuit

MI1 Forward/ stop command
MI2 Reverse/ stop command
MI3 Multifunction digital input 3
MI4 Multifunction digital input 4
MI5 Multifunction digital input 5

MI6 Multifunction digital input 6
+24 V DC source voltage
DCM Digital signal common
RA Multi-function relay output NO
RB Multi-function relay output NC
RC Relay common

+ 10 V Potentiometer power supply
AVI Analog voltage input
ACM Analog common
AFM Analog output

TASK 2 :
To set the basic parameters.
Parameter Function Setting Factory Setting

01.00 Maximum Output Frequency 50.00 to 599.0 Hz 60.00
(Fmax)
01.01 Maximum Voltage Frequency 0.10 to 599.0 Hz 60.00
(Fbase)
01.02 Maximum Output Voltage (Vmax) 115V/230Vseries : 0.1V to 255.0V 220.0
460V series : 0.1V to 510.0V 440.0

Parameter Explanation Setting Factory Setting
07.00 Motor Rated Current 30 % FLA to 120% FLA FLA
07.01 Motor No-Load Current 0 % FLA to 99% FLA 0.4° FLA

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CITS : Power - Electrician & Wireman - Exercise 95