User Manual V 1-4.XX User guide

10-6 Using the Function Block
Figure 10.4 shows the parameters that are used for the timer delay
function and how these parameters are evaluated.
Figure 10.4
Timer Delay Function Block
As an example, you could use the timer delay function to set up a
delayed start with a ramp up to speed function. When the L Option
receives start input, there is a delay before the start command is sent
to the motor. This delay is specified in Function In5 (parameter 208)
as a time in minutes. For this example, Function In5 is set to 0.25
minutes, which is 15 seconds. When the time expires, the motor speed
ramps up to the specified speed. When the start is removed or a stop
command is issued, the stop command is sent to the drive and the
ramp is disabled, causing a current limit stop to zero speed.
This example is shown in Figure 10.5.
Regardless of the option you choose, the timer off event cannot
happen until after your timer on event occurs.
200
Func 1 Eval Sel
0 – 17
198
Function In1
199
Func 1 Mask/Val
I
V
Timer Delay Function Block
203
Func 2 Eval Sel
0 – 17
201
Function In2
202
Func 2 Mask/Val
I
V
212
Function Sel
0 In1 Or In2
1 In1 Nor In2
2 In1 And In2
3 In1 Nand In2
4 (In1 Or In2) And In3
5 (In1 And In2) Or In3
In4 Off Time
In5 On Time
In1
In2
206
Func 3 Eval Sel
0 – 17
204
Function In3
205
Func 3 Mask/Val
I
V
In3
207
Function In4
208
Function In5
In4
In5
213
Function
Output 1
6 (In1 Timer Or In2) And In3
7 (In1 Timer And In2) Or In3
In4 Off Time
In5 On Time
If: Then:
True In6—>Out 1
False In7—>Out 1
209
Function In6
210
Function In7
In6
In7
In1
In2
In3
In1 In2
In3