Wiring; Precautions For Use Of The Inverter - Mitsubishi Electric D700 Quick Start Manual

D700 QUICK START MANUAL

4. WIRING

Terminal connection diagram
Sink logic
Main circuit terminal
Control circuit terminal
Single-phase power input
MCCB MC
Single-phase
R/L1
AC power
S/L2
supply
MCCB MC
Three-phase
AC power
supply
Earth
(Ground)
Control input signals (No voltage input allowed)
Forward
Terminal functions vary
rotation start
with the input terminal
Reverse
assignment (Pr. 178 to
rotation start
Pr. 182 )
High
speed
Middle
Multi-speed selection
speed
*2 When using terminals PC-
Low
SD as a 24VDC power
speed
supply, take care not to
short across terminals
Contact input common
PC-SD.
24VDC power supply
(Common for external power supply transistor)
Frequency setting signals (Analog)
3
*3 Terminal input specifications Frequency
can be changed by analog
setting
input specifications 2
potentiometer
switchover (Pr. 73).
1/2W1kΩ
Terminal 10 and terminal 2
are used as PTC input
*5
terminal (Pr. 561 ).
1
*4 Terminal input
specifications can be Terminal 4
changed by analog input (+)
input
specifications switchover
(Current (-)
(Pr. 267 ). Set the
input)
voltage/current input
switch in the "V" position
to select voltage input (0
to 5V/0 to10V) and "I"
(initial value) to select
current input (4 to 20mA).
*5 It is recommended to use 2W1kΩ
when the frequency setting signal
is changed frequently.
Safety stop signal
Shorting
wire
Output shutoff (Line 1)
Output shutoff (Line 2)
Common terminal
NOTE
• To prevent a malfunction caused by noise, separate the signal
cables more than 10cm (3.93 inch) from the power cables. Also
separate the main circuit wire of the input side and the output side.
• After wiring, wire offcuts must not be left in the inverter. Wire offcuts
can cause an alarm, failure or malfunction. Always keep the inverter
clean. When drilling mounting holes in an enclosure etc., take care
not to allow chips and other foreign matter to enter the inverter.
• The output of the single-phase power input specification is three-
phase 200V.

5. PRECAUTIONS FOR USE OF THE INVERTER

The FR-D700 series is a highly reliable product, but incorrect
peripheral circuit making or operation/handling method may shorten
the product life or damage the product. Before starting operation,
always recheck the following items.
1. Use crimping terminals with insulation sleeve to wire the power
supply and motor.
2. Application of power to the output terminals (U, V, W) of the inverter
will damage the inverter. Never perform such wiring.
3. After wiring, wire offcuts must not be left in the inverter. Wire offcuts
can cause an alarm, failure or malfunction. Always keep the inverter
clean. When drilling mounting holes in an enclosure etc., take care
not to allow chips and other foreign matter to enter the inverter.
6
4. Use cables of the size to make a voltage drop 2% maximum. If
MitsubishiElectric Automation, Inc.
*
1. DC reactor (FR-HEL) *6 A brake transistor is not built-in to the
When connecting a DC reactor, remove the
FR-D720-008 and 014, FR-D720S-008
jumper across P1-P/+
and 014.
Brake unit
*7 Brake resistor (FR-ABR, MRS type, MYS
(Option)
type)
*1 Install a thermal relay to prevent an
R
overheat and burnout of the brake resistor.
Earth
*7
(The brake resistor can not be connected
(Ground)
to the FR-D720-008 and 014, FR-D720S-
Jumper PR N/-
008 and 014.)
*6
P1 P/+
R/L1
S/L2 V
W
T/L3
Main circuit
Control circuit
Relay output
C
STF
Terminal functions vary
B
by Pr. 192 A,B,C terminal
Relay output
STR
function selection
(Fault output)
A
RH
RM Open collector output
Terminal functions vary by
RUN
RL
Pr. 190 RUN terminal function
Running
selection
SD
Open collector output common
*2 SE
PC
Sink/source common
10(+5V)
2 0 to 5VDC
*3
AM
(0 to 10VDC)
5
5(Analog common)
PU
4 4 to 20mADC
connector
0 to 5VDC
*4
0 to 10VDC
V I
Voltage/current
input switch *4
SO
S1
For manufacturer setting
S2
SC
the wiring distance is long between the inverter and motor, a main
circuit cable voltage drop will cause the motor torque to decrease
especially at the output of a low frequency. Refer to page 6 for the
recommended wire sizes.
5. The overall wiring length should be 500m (1640.42 feet) maximum.
Especially for long distance wiring, the fast-response current
limit function may decrease or the equipment connected to the
secondary side may malfunction or become faulty under the
influence of a charging current due to the stray capacity of the
Motor
wiring. Therefore, note the overall wiring length.
IM
6. Electromagnetic wave interference. The input/output (main circuit)
of the inverter includes high frequency components, which may
Earth (Ground)
interfere with the communication devices (such as AM radios) used
near the inverter. In this case, install the FR-BIF optional capacitor
type filter (for use in the input side only) or FR-BSF01 common
mode filter to minimize interference.
7. Do not install a power factor correction capacitor, surge suppressor
or capacitor type filter on the inverter output side. This will cause
the inverter to trip or the capacitor and surge suppressor to be
damaged. If any of the above devices are connected, immediately
remove them. When using capacitor type filter (FR-BIF) for single-
phase power supply specification, make sure of secure insulation of
T-phase, and connect to the input side of the inverter.
(+)
Analog signal output
8. Before starting wiring or other work after the inverter is operated,
(0 to 10VDC)
(-)
wait for at least 10 minutes after the power supply has been switched
off, and check that there are no residual voltage using a tester or the
like. The capacitor is charged with high voltage for some time after
power off and it is dangerous.
9. A short circuit or earth (ground) fault on the inverter output side may
damage the inverter modules.
Fully check the insulation resistance of the circuit prior to inverter
„ „
operation since repeated short circuits caused by peripheral
circuit inadequacy or an earth (ground) fault caused by wiring
inadequacy or reduced motor insulation resistance may damage
the inverter modules.
Fully check the to-earth (ground) insulation and phase to phase
„ „
insulation of the inverter output side before power-on.
Especially for an old motor or use in hostile atmosphere, securely
„ „
check the motor insulation resistance etc.
10. Do not use the inverter input side magnetic contactor to start/stop
the inverter. Always use the start signal (turn ON/OFF STF, STR
signal) to start/stop the inverter.
11. Across P/+ and PR terminals, connect only an external regenerative
brake discharging resistor. The brake resistor can not be connected
to the FR-D720-008 and 014, FR-D720S-008 and 014. Do not
connect a mechanical brake. Leave terminals P/+ and PR open.
Also, never short between P/+ and PR.
12. Do not apply a voltage higher than the permissible voltage to the
inverter I/O signal circuits. Application of a voltage higher than the
permissible voltage to the inverter I/O signal circuits or opposite
polarity may damage the I/O devices. Especially check the wiring
to prevent the speed setting potentiometer from being connected
incorrectly to short terminals 10-5.
13. Provide electrical and mechanical interlocks for MC1 and MC2
which are used for bypass operation. When the wiring is incorrect
and if there is a bypass operation circuit as shown right, the inverter
will be damaged when the power supply is connected to the inverter
U, V, W terminals, due to arcs generated at the time of switch-over
or chattering caused by a sequence error.