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Chapter 2
(1) Explanation of main circuit terminals
Symbol
Terminal name
R, S, T
Main power input
(L1, L2, L3)
U, V, W
Inverter output
(T1, T2, T3)
PD, P
DC reactor connection
(+1, +)
P, RB
External braking resistor
(+, RB)
connection
P, N
Regenerative braking unit
(+, -)
connection
G
Inverter ground
(2) Explanation of control circuit terminals
Symbol
Terminal name
Analog power
L
supply (common)
Frequency setting
H
power supply
Frequency
O
command
(voltage)
Auxiliary
frequency
O2
command
(voltage)
Frequency
OI
command
(current)
Analog monitor
AM
(voltage)
Analog monitor
AMI
(current)
Digital monitor
FM
(voltage)
Interface power
P24
Interface power
CM1
supply (common)
Forward rotation
FW
command
1
2
3
4
Intelligent input
5
6
7
8
Connect to the AC power supply.
Leave these terminals unconnected when using a regenerative converter (HS900 series).
Connect a 3-phase motor.
Remove the jumper from terminals PD and P, and connect the optional power factor reactor (DCL).
Connect the optional external braking resistor.
(The RB terminal is provided on models with 30 kW or less capacity.)
Connect the optional regenerative braking unit (BRD).
Connect to ground for grounding the inverter chassis by type-D grounding (for 200 V class models)
or type-C grounding (for 400 V class models).
This common terminal supplies power to frequency command terminals (O, O2,
and OI) and analog output terminals (AM and AMI). Do not ground this terminal.
This terminal supplies 10 VDC power to the O, O2, OI terminals.
Input a voltage (0 to 10 VDC) as a frequency command. 10 V specifies the
maximum frequency.
To specify the maximum frequency with a voltage of 10 V or less, set the voltage
using function "A014".
Input a voltage (0 to ±10 VDC) as a signal to be added to the frequency command
input from the O or OI terminal. You can input an independent frequency
command from this terminal (O2 terminal) alone by changing the setting.
Input a current (4 to 20 mA DC) as a frequency command. 20 mA specifies the
maximum frequency.
The OI signal is valid only when the AT signal is on. Assign the AT function to an
intelligent input terminal.
This terminal outputs one of the selected "0 to 10 VDC voltage output"
monitoring items. The monitoring items available for selection include output
frequency, output current, output torque (signed or unsigned), output voltage,
input power, electronic thermal overload, LAD frequency, motor temperature,
heat sink temperature, and general output.
This terminal outputs one of the selected "4 to 20 mA DC current output"
monitoring items. The monitoring items available for selection include output
frequency, output current, output torque (unsigned), output voltage, input
power, electronic thermal overload, LAD frequency, motor temperature, heat
sink temperature, and general output.
This terminal outputs one of the selected "0 to 10 VDC voltage output (PWM
output mode)" monitoring items. The monitoring items available for selection
include output frequency, output current, output torque (unsigned), output
voltage, input power, electronic thermal overload, LAD frequency, motor
temperature, heat sink temperature, general output, digital output frequency,
and digital current monitor.
For the items "digital output frequency" and "digital current monitor," this
terminal outputs a digital pulse signal at 0/10 VDC with a duty ratio of 50%.
This terminal supplies 24 VDC power for contact input signals.
If the source logic is selected, this terminal is used as a common contact input
supply
terminal.
This common terminal supplies power to the interface power supply (P24),
thermistor input (TH), and digital monitor (FM) terminals. If the sink logic is
selected, this terminal is used as a common contact input terminal. Do not
ground this terminal.
Turn on this FW signal to start the forward rotation of the motor; turn it off to
stop forward rotation after deceleration.
Select eight of a total 56 functions, and assign these eight functions to terminals
1 to 8.
Note:
If the emergency stop function is used, terminals 1 and 3 are used exclusively for
the function. For details, see Item (3), "Explanation of switch "(on page 2-10).
Installation and Wiring
Description
Description
2-7
Electric property
Allowable load current:
20 mA or less
Input impedance: 10kΩ
Allowable input voltages: -0.3
to +12 VDC
Input impedance: 10kΩ
Allowable input voltages:
0 to 12 VDC
Input impedance: 10kΩ
Maximum allowable current:
24 mA
Maximum allowable current:
2 mA
Output voltage accuracy
±20%
(Ta=25±10 degrees C)
Allowable load impedance:
250Ω or less
Output current accuracy
±20%
(Ta=25±10 degrees C)
Maximum allowable current:
1.2 mA
Maximum frequency:
3.6 kHz
Maximum allowable output
current: 100 mA
[Conditions for turning
contact input on]
Voltage across input and PLC:
18 VDC or more
Input impedance between
input and PLC: 4.7kΩ
Maximum allowable voltage
across input and PLC:
27 VDC
Load current with 27 VDC
power: about 5.6 mA
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