Senlan Hope800 Series Manual page 111

PFI feedforward
P F I
＋ ＋
数 字 给 定
Digital reference
＋
Communication
通 讯 给 定
reference
 Three ways of position setting: pulse signal (input pulse sequence of the PFI terminal), digital setting
(F9-24) and communication setting (analog quantity 1 of the upper computer), the latter two are only
read once at the moment of starting, namely, change of the two settings will not take effect during
operation and it will works when restarted.
 When selecting pulse sequence for the position setting, the input of the meter counter must be "59: PFI
terminal state", namely, F9-17=59; besides, the feedforward gain of position setting and filtering
adjustment can be achieved by the PFI gain and filtering time. It should be noted that the frequency
setting should select the frequency correction mode when the PFI and PID work at front/back of the
slope.
 When selecting PFI for the position setting, the position setting direction can be determined by the
multifunctional digital input "56: reverse direction of the PFI position setting".
 Range of the digital and communication settings: -32768~32767. Directly use the process PID control to
form position loop and take the PID output connected by an arithmetic unit as the speed given, then form
a speed closed loop together with speed feedback, making double closed loops.
 Three settings are in the form of accumulation internally and when one is used, the other two should be
guaranteed to be 0.
 The electronic gear can amplify or shrink the position setting without truncation error. See the page 107
for details.
 The counter 2 is an up-and-down counter. In its interior, the increment count input is fixed to the position
setting after handing of the electronic gear and the decrement count input is fixed to 4 times of the
frequency quadrature count value of the quadrature encoder, which is the position feedback. At the
instant of the converter starting, the converter reads out the position setting and adds it to the counter 2
(PFI is added to the counter 2 in real time). Then the feedback will carry out decrement to the counter 2
and the count value of the counter 2 is the positional deviation.
 When applying to the communication position setting, the three processes that are transmitted to the
converter by an upper computer are: master control word (3200H), frequency setting (3201H) and
position setting (3202H, namely, analog quantity 1 of the upper computer and see the page 106 for
details); the return content includes: major status word (3210H), operation frequency (3211H), encoder
position high word (3212H) and encoder position low word (3213H), with the latter two mapped by
arithmetic unit 1 and 2. See the page 113 and page 116 for details.
 The frequency converter is controlled by a PG vector. If there is PG V/F control meeting requirements,
the latter is preferred.
 When the digital input, "51: counter-reset", is effective. Reset the FU-15 "count value of the counter"
and the position feedback, that's to say, the FU-50 "encoder position high word" and FU-51 "encoder
position low word" are reset at the same time. See the page 122 for details.
1 0 0 ％
P F I 前 馈
P F I
H z
0
数 字 输 入 5 2
Digital input 52
计 米 器 及 计 数 器 2 清 零
Reset meter counter and counter 2
电 子 齿 轮
Electronic gear
F d - 2 9
增 / 减
Increase/decrease
F d - 3 0
计 数 器 2
counter 2
F U - 5 0 编 码 器 位 置 高 字
FU-50 encoder position high word
F U - 5 1 编 码 器 位 置 低 字
FU-51 encoder position low word
( 可 映 射 到 通 讯 状 态 变 量
(it can be mapped to communication state
3 2 1 2 H 和 3 2 1 3 H )
variable 3212H and 3213H)
Count value high word of FU-53 counter 2 F U - 5 3 计 数 器 2 计 数 值 高 字
Count value low word of FU-54 counter 2 F U - 5 4 计 数 器 2 计 数 值 低 字
算 术 单 元
Arithmetic unit
PID reference
P I D 给 定
＋
P I D
－
0
P I D 反 馈
PID feedback
数 字 输 入 3 5
Digital input 53
过 程 P I D 禁 止
Process PID prohibited
计 数 器 计 数 值
Count value of counter
6 Parameter Description
＋
＋
＋
A S R
－
A
PG velocity
P G 测 速
B
measurement
正 交
Orthogonal
计 数 器
counter
数 字 输 入 5 1 计 数 器 清 零
Reset digital input 51 counter
P G
107