Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 125)

2 Functions of Devices in DVP-PLC
DVP-PLC Application Manual 2-97
+ n*6 + 4 Gap frequency of the n th section (GFn)
+ n*6 + 5 Target frequency of the n th section (TFn)
+ n*6 + 6 The lower 16 bits of the 32 bits for the target number of output pulses in the n th section (SEn)
+ n*6 + 7 The higher 16 bits of the 32 bits for the target number of output pulses in the n th section (SEn)
3. The functions:
This function can only be used on Y0 output point and the timing chart is as follows. After filling out the
parameter table, setup M1144 to start the function (should be applied in RUN mode).
SF2
TF2
SF3
TF3
TF4
SF4 TF1
SF1
GF
GT
GT
GF
Frequency(Hz)
Time(ms)
1st section
number of
pulses
(SE1)
2nd section
number of
pulses
(SE2)
3rd section
number of
pulses
(SE3)
4th section
number of
pulses
(SE4)
4. How to use and the restrictions:
a) The start frequency and target frequency have to be ≥ 200Hz; otherwise, the function will not be executed or
complete execution.
b) The start frequency and target frequency have to be < 32,700Hz. Frequency > 32,700Hz will be executed in
32,700Hz.
c) Range of gap time: 1 ~ 32,767ms (Min. unit: ms)
d) The range of gap frequency within acceleration section: 1Hz ~ 32,700Hz; within deceleration section: -1 ~
-32,700Hz. If the gap frequency is set as 0Hz, it will fail to reach target frequency in the executed section but
in the next section when the target number of pulses is reached.
e) The target number of pulses in a section has to be > (GF × GT/1,000) × [(TF - SF)/GF]; otherwise the target
may not be reached. To correct it, the user may extend gap time or increase the target number of pulses.
f) When PLC is in RUN status and there is a high-speed instruction assigning Y0 input, the instruction will be
executed prior to other instructions.
g) After M1144 = On, if M1148 has not be reached and M1144 is “Off”, deceleration will be enabled. And if
M1154 = Off at the moment, the deceleration rule will be “decelerating 200Hz every 200ms” and M1147 will
be set. The pulse output will stop when the frequency falls under 200Hz. If M1154 = On at the moment, the
output will be executed following the gap time and frequency as set by the user. The time shall not be ≤ 0 (if ≤
0, it will follow the initial setting 200ms) and the frequency shall not be ≥ 0 (if = 0, it will follow the initial setting
-1KHz; if > 0, negative sign comes before the value).