Delta Electronics VFD-M manual Example 2 Pr.78 = 02 Continuously executes program cycles

Chapter 4 Parameters

Example 2 (Pr.78 = 02) Continuously executes program cycles:

The diagram below shows the PLC program stepping through each speed and then automatically starting again. To stop the PLC program, either pause or stop the program. (Refer to Pr.38 to Pr.42 value 17 and 18)

Frequency
				Pr.20		Master freq.=10Hz				Pr.81=1.0
60Hz						Pr.17=10 Hz		Pr.42=16
						Pr.18=20 Hz		Pr.45=09		Pr.82=1.2
50Hz					Pr.21	Pr.19=40 Hz		Pr.46=10		Pr.83=1.5
						Pr.20=60 Hz * Pr.78=01				Pr.84=1.5
			Pr.19			Pr.21=50 Hz		Pr.79=00		Pr.85=0.8
40Hz						Pr.22=30 Hz				Pr.86=1.7
						Pr.23=15 Hz				Pr.87=1.7
30Hz						Pr.22
20Hz		Pr.18								Pr.18
								Pr.23
15Hz
	Pr.17								Pr.17
10Hz
0Hz
	Pr.81	Pr.82	Pr.83	Pr.84	Pr.85	Pr.86	Pr.87		Pr.81	Pr.82

Program step complete

Program operation completed

Example 3 (Pr.78 = 03) Execute one cycle step by step:

This example shows how the PLC function can perform one cycle at a time, within a complete cycle. Each step will use the accel/decel times in Pr.10 to Pr.13. It should be noted that the time interval for each step may be shorter than expected due to the time required for acceleration and deceleration.

Frequency

Note: operating time for each step is 10 times

the settings of Pr.81 to Pr.87.

60Hz

Pr.20

Pr.17=10 Hz

Pr.42=16

Pr.81=1.0

Pr.18=20 Hz

Pr.45=09

Pr.82=1.2

Pr.21

Pr.19=40 Hz

Pr.46=10

Pr.83=1.5

50Hz

Pr.20=60 Hz

* Pr.78=03

Pr.84=1.5

Pr.19

Pr.21=50 Hz

Pr.79=00

Pr.85=0.8

40Hz

Pr.22=30 Hz

Pr.86=1.7

Pr.23=15 Hz

Pr.87=1.7

30Hz

Pr.22

20Hz

Pr.18

Pr.23

15Hz

Pr.17

10Hz

0Hz

Pr.81

t

Pr.82

t

Pr.83

t

Pr.84

t

t

Pr.86

t

Pr.87

t

Program step

Pr.85

complete

Program operation completed

Revision May 2008, ME14, SW V3.04 4-55