Appendix C – Table of MFC710 frequency converter's parameters
Parameter / Name
Function
Available options / measurement unit
Factory
setting
Change
during
operation
2.45 In.A2 Scale
Scale of analog
referencing-unit RefA2
-500.0 ... 500.0 %
100.0%
YES
2.46 In.A0 Offs.
Offset of analog
referencing-unit RefA0
-500.0 ... 500.0 %
0.0%
YES
2.47 In.A1 Offs.
Offset of analog
referencing-unit RefA1
-500.0 ... 500.0 %
0.0%
YES
2.48 In.A2 Offs.
Offset of analog
referencing-unit RefA2
-500.0 ... 500.0 %
0.0%
YES
2.49 In.A0 Fltr.
Constant of time of
lowpass filter AI0
0.01 ... 50.00 s
0.10 s
YES
2.50 In.A1 Fltr.
Constant of time of
lowpass filter AI1
0.01 ... 50.00 s
0.10s
YES
2.51 In.A2 Fltr.
Constant of time of
lowpass filter AI2
0.01 ... 50.00 s
0.10 s
YES
2.60 PID Ref.Src
Choice of PID controller
referencing-unit
141 MP-PID
– motopotentiometer PID
142 RS PID
– referencing through RS232 or RS485
143 Keyb.P
– referencing frequency from panel
144 Ref.A0
– referencing frequency by signal from
analog input AI0
145 Ref.A1
– referencing frequency by signal from
analog input AI1
146 Ref.A2
– referencing frequency by signal from
analog input AI2
143 Keyb.P
YES
2.61 PID Inp.Src
Choice of regulated value
of PID controller
144 Ref.A0
– referencing regulated value from
analog referencing-unit Ref.A0
145 Ref.A1
– referencing regulated value from
analog referencing-unit Ref.A1
146 Ref.A2
– referencing regulated value from
analog referencing-unit Ref.A2
145 Ref.A1
YES
2.62 Error inv.
Negation of controller's
error
000 NO
001 YES
000 NO
YES
2.63 P Amp.
Amplification of
proportional element of
PID controller
1 ... 3000 %
1000 %
YES
2.64 I Const.
Constant of time I of the
PID controller
0.01 ... 320.00 s
1.00 s
YES
2.65 D Amp.
Amplification of differential
element D
0 ... 500 %
0 %
YES
2.66 max.Out.PID
Upper limitation of PID
controller output value
0 ... 3000.0 %
100.0 %
YES
2.67 min.Out.PID
Lower limitation of PID
controller output value
-3000.0 ... 0 %
0.0 %
YES
2.68 PID Out.res
Resetting PID output when
device is stopped
0
– reset on STOP
1
– PID controller continuously active
2
– when the PID controller is not active PID's output
tracks the actual reference frequency (only for
the case of direct use of the PID controller
via par. 2.2 “Ref.unit A” or par. 2.3 “Ref.unit B”).
Note:
When the PID controller is used via PLC
function blocks, this parameter should be set to
0 or 1
2
YES
2.69 PID type
PID algorithm
Service parameter
0
YES
2.70 SLEEP time
Time before activating
Sleep function when the
output remains on a
minimum (par. 2.67)
0 ... 32000 s
0 s = SLEEP function disabled
0 s
YES
2.71 SLEEP thr
A threshold of "wakening"
from SLEEP state
0.0 ... 100.0 %
Waking up when: (Error > par 2.71) or (PID output >
par 2.71)
5.0 %
YES
Frequency converter MFC710 type with OP-11 control panel. TWERD Power Electronics
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