E L C P r o g r a m m i n g M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003003E
3-146
API Mnemonic
Operands
Function
56
SPD
S
1
, S
2
, D
Speed Detection
Bit Devices
Word devices
Program Steps
Type
OP
X Y M S K H KnX
KnY
KnM KnS T
C D E
F
S
1
*
S
2
*
*
*
*
*
*
*
*
*
*
*
D
*
*
*
SPD: 7 steps
ELC ELCB
ELCM
PB PC/PA/PH
PV
PB PH/PA
32 16
P
32 16
P
32 16
P
32 16 P 32 16 P
Operands:
S
1
: External pulse input
S
2
: Pulse time (ms)
D
: Result
(occupies 5 continuous addresses)
Description: ELC-PB/PC/PA/PH/PV, ELCB-PB
1.
This instruction counts the number of pulses received at input terminal
S
1
during the time
S
2
(ms) and stores the result in the register
D
.
2.
External pulse input terminals designated in
S
1
for all ELC controllers:
ELC
Input
ELC-PB
ELCB-PB
ELC-PA/PC/PH
(new input X0 is added
for V1.2 and above)
ELC-PV
Available input points
X1, X2
X0, X1, X2
X0 ~ X3
3.
ELC-PC/PA/PH models, if X0, X1 or X2 are used with a SPD instruction, then the related
high-speed counters or external interrupts I001, I101, I201 can not be used.
4.
Count the number of pulses received at the inputs specified by
S
1
during the time specified by
S
2
(ms) and store the result in the register specified by
D
.
5.
D
occupies 5 registers,
D
+1,
D
stores the result of the previous SPD operation,
D
+3,
D
+2
indicate the present accumulated count value of pulses and
D
+4 indicates the remaining time,
the max. is 32767ms. Both are 32-bit integer values.
6.
ELC-PB, ELCB-PB models: Maximum frequency: X1=20KHz, X2=10KHz, Total frequency
must be less than 20KHz.
7.
ELC-PC/PA/PH models: Maximum frequency: X1=30KHz, X2=10KHz, Total frequency must
be less than 30KHz. If X0 is used in a SPD instruction, X0 and X1 will be the inputs of A, B
phase signals to detect the speed of A, B phase. The maximum input frequency is 4KHz. Use
D1022 to set time frequency.
8.
ELC-PV models: Maximum frequency: X0 and X1 = 100KHz, X2 and X3 = 10KHz, Total
frequency must be less than 100KHz. If X0 is used in a SPD instruction, X0 and X1 will be the
inputs of A, B phase signals to detect the speed of A, B phase.
9.
This instruction is mainly used to obtain a proportional value of rotation speed. The result
D
and rotation speed are in proportion. The following equation can be used to obtain the rotation
speed of motor.
Содержание ELC-PB
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