Mitsubishi Electric FR-A700 Series, Техническое руководство

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44
SPECIFICATIONS
(3) Auxiliary input (1, 5)
The compensation signal can be input to the main
speed setting (terminals 2 (or 4)-5) for synchronous/
continuous speed control operation, etc.
Functions of terminal 1 varies with the [ Pr. 73 ] setting.
(a) The [ Pr. 73 ] setting is 0 to 3, 6, 7 (initial value
is 1)
The voltage signal across terminals 1-5 is
added to the voltage signal (positive) across
terminals 2 (or 4)-5. If the result of addition is
negative, it is regarded as 0 and the motor
comes to a stop.
(b) When the [ Pr. 73 ] setting is 10 to 13, 16, 17
The polarity reversible operation function is
selected. The voltage signal across terminals
1-5 is added to the voltage signal (positive)
across terminals 2 (or 4)-5. A positive addition
result start forward rotation (if terminal STF is
ON) and a negative result starts reverse
rotation (if terminal STF is ON).
The compensation signal of terminal 1 can also be
added to the multi-speed setting or 4 to 20mA current
input.
1) Multi-speed input compensation
Setting 1 in [ Pr.28 Multi-speed input compensation
selection
] (initial value 0) adds voltage of terminal 1
to multi-speed operation on page 48.
2) Override
For the above compensation input, the fixed
compensation amount is applied to each speed.
Using the override function easily varies each
speed equally.
Set any of 4, 5, 14, 15 in [
Pr.73
] to use the
override. The override allows the multi-speeds
set in the parameters, analog input across
terminals 1-5, or current input across terminals 4-
5 to be changed at a constant rate between 50%
and 150% (when initial value is set) according to
the external analog signal input to across
terminals 2-5.
Terminals 1-5 : 0 to 10VDC, 5V
Inverter Output According to Start Signal and Auxiliary
Input Terminal Polarity
[Pr. 73]
Setting
Added
Command
Voltage
Start Signal Input
STF STR
0 to 3, 6, 7
+
Forward
rotation
Reverse
rotation
- Stop Stop
10 to 13, 16,
17
+
Forward
rotation
Reverse
rotation
-
Reverse
rotation
Forward
rotation
A700 F700
0
2.5V (5V) across
terminals 2
(or 4)-5
0V across
terminals 2 (or 4)-5
−
5V
(
−
10V)
−
2.5V
(
−
5V)
+2.5V
(+ 5V)
+5V
(+10V)
When
STF-SD
is ON
Forward rotation
Forward rotation
Terminal 1
Output frequency
0
Output frequency
2.5V (5V) across
terminals 2
(or 4) -5
0V across
terminals 2 (or 4)-5
−
5V
(
−
10V)
−
2.5V
(
−
5V)
+2.5V
(+ 5V)
+5V
(+10V)
When
STF-SD
is ON
Forward rotation
Forward rotation Reverse rotation
Terminal 1
Reverse
rotation
How to find each speed (frequency (f))
f = f
pr.
×
α
[Hz]
100
f
pr
. : speed setting value [Hz]
Multi-speed
Terminal 1-5 analog input
Current across terminals 4-5
α
: override compensation amount [%]
(terminal 2-5 analog input)
150%
100%
50%
0 2.5
(5)
5V Terminal 2
(10V)
Compensation Amount
Override Setting Signal and
Compensation Amount
t
O
u
tp
ut
f
req
ue
nc
y
(
H
z
)
High speed
Middle speed
Low speed
Compensation range
by override
Multi-speed Override Operation
STF
STR
SD
RH
RM
RL
10
2
5
MCCB
IM
Power
supply
Forward rotation
Reverse rotation
Speed
selection
Inverter
Motor
Conveyor
Override
setting signal
Override connection diagram