Fig. 4.2b – Complete structure of MFC710 control
Section of frequency referencing-unit and direction of rotation
Configuration AI0
Parameter 2.40
(referencing 0-10V, 2-10V
0-20mA, 4-20mA)
FILTER – par. 2.49
Switch of mode choice:on
voltage/ on current.
Configuration AI1
Parameter 2.41
(referencing 0-10V, 2-10V
0-20mA, 4-20mA)
FILTER – par. 2.50
Switch of mode choice:on
voltage/ on current.
Configuration AI2
Parameter 2.42
(referencing 0-10V, 2-10V
0-20mA, 4-20mA)
FILTER – par. 2.51
Switch of mode choice:on
voltage/ on current.
Configuration of Sel.A0
Par. 2.43, 2.46
(scale and offset)
Configuration of
Sel.A1
Par. 2.44, 2.47
(scale and offset)
Configuration of
Sel.A2
Par. 2.45, 2.48
(scale and offset)
Panel
MOTOPOTENTIOMETER
Parameters 2.20, 2.21, 2.22, 2.23
PID-regulator
Parameters 2.70, 2.71, 2.72, 2.73,
2.74, 2.75
PCH.x
PCH.x
Selector A
par. 2.2
Selector B
par. 2.3
PCH.133
A / B
(PCH.39)
par. 2.1
PCH.164
Ref.-unit A
P
C
H
.1
65
R
ef
.-
un
it
B
PCH.134
PCH.135
PCH.136
PCH.137
RSreferening [Hz]
Register 2001 MODBUS
PCH.138
PCH.139
PCH.133
PCH.134
PCH.135
PCH.136
PCH.137
PCH.138
PCH.139
1
0
PCH.144
PCH.145
PCH.146
Convertation % → Hz
f max
f min
100.0
0.0
Par. 2.11, 2.12
Choice of f const.:
A1 A2 A3 Output
0 0 0 No f const.
1 0 0 f const. 1 (par. 2.33)
0 1 0 f const. 2 (par. 2.34)
1 1 0 f const. 3 (par. 2.35)
0 0 1 f const. 4 (par. 2.36)
1 0 1 f const. 5 (par. 2.37)
0 1 1 f const. 6 (par. 2.38)
1 1 1 f const. 7 (par. 2.39)
0
Enable RS
(PCH.40)
par. 4.7
1
0
Switch on f const.
A1 - Par. 2.30
A2 - Par. 2.31
A3 - Par. 2.32
PCH.x
PCH.x
PCH.x
f const.
No f const.
Task constraint with RS only
when:
- Enable RS (PCH.40) = 1
(about value PCH.40
determine par. 4.7)
- BIT5 of register 2000
(MODBUS) = 1
Absence of
constraint RS
f const.7 (par. 2.39)
Last Frequency
Emergency ref.-unit
Par. 3.23, 3.30, 3.40,
3.50, 3.60, 3.65
Min. frequency or frequency
STOP
fsel.
f
Par. 2.13, 2.14
Signal «Blocking of electro
drive».
When frequency is low par. 2.13
and par. 2.14 = TAK (YES)
Change of ref.-unit sign-
determine direction of
rotation. May block
direction of rotation -
par. 1.65
REWERS (PCH.38)
Signal of device START
/STOP.
Value of this one signal
makes changes in ref.-unit
sign and direction of rotation
of source: eg. selecting
direction from control panel
No Emergency Ref.-unit
f sel.
f
Cutting stripes of
frequency - par. 1.90,
1.91, 1.92, 1.93, 1.94,
1.95
Ref.-unit (PCH.166)
Referencing of operation
frequency and direction of
rotation, active at this
moment.
AI0
AI1
AI2
MFC710
Structure of frequency selector
Convertation % → Hz
f max
f min
100.0
0.0
Par. 2.11, 2.12
Hz (U/f) or
seс
-1
(vector)
Hz (U/f) or seс
1
(vector)
