Hitachi L100 IP Series, Инструкция по эксплуатации

Страница: 73 / 94

Chapter 12 – Wiring examples
12-3
Inverter operation using fixed set values
Connection diagram
AT CF
1
CF
2
-24V+
RUN
FA
1
R
eve
rs
e run
For
w
ar
d run
24VD
C
FA
1
R
UN
Configuration of parameters
Function
Configurable
parameters
Description
A 01
01 Set value input using control terminals
A 02 01 Running command using terminals FW/RV
F 02 10 Acceleration time in s
F 03 10 Deceleration time in s
C 01 00 FW: Forward running command on digital input 1
C 02 01 RV: Reverse running command on digital input 2
C 03 16 AT: Use current input for set value (4 – 20mA)
C 04 02 CF1: Multistage frequency input 1
C 05 03 CF2: Multistage frequency input 2
C 21 00 RUN signal output on terminal 11
C 22 01 FA signal output on terminal 12
A 21
Multistage
frequency 1
Here the fixed frequency is entered that will be output
when CF1 and CF2 are both inactive.
A 22
Multistage
frequency 2
Here the fixed frequency is entered that will be output
when CF1 is inactive and CF2 is active.
A 23
Multistage
frequency 3
Here the fixed frequency is entered that will be output
when CF1 and CF2 are both active.
Function description
The inputs 1 and 2 are used exactly the way as described in the previous example.
When one or both of the multistage frequency inputs CF1 and CF2 are activated then
the current active frequency output is superseded by the fixed frequency set by the
combination of inputs CF1 and CF2. Consequently the motor is accelerated or
decelerated until the new frequency is reached. When none of the inputs CF1 and
CF2 is activated, then the frequency set value can be set by the terminals O (voltage
set value) or OI (current set value). In this example, the wiring of terminals O or OI
has not been included for simplicity.
The logical levels necessary for the various multistage frequency inputs to produce a
certain frequency are described under functions
F 01 and A 20 through A 35 .
This wiring example also contains the parameters that must be entered so that the
described signals will be output on terminals 11 and 12. The output signal type
(normally open or normally closed) can be set using function
C 21 for ditital output
11 and function C 22 for ditital output 12.