Chapter 2 Installation and Wiring
2-7
(1) Explanation of main circuit terminals
Connect to the AC power supply.
Leave these terminals unconnected when using a regenerative converter (HS900 series).
Remove the jumper from terminals PD and P, and connect the optional power factor reactor (DCL).
External braking resistor
connection
Connect the optional external braking resistor.
(The RB terminal is provided on models with 30 kW or less capacity.)
Regenerative braking unit
connection
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).
(2) Explanation of control circuit terminals
Analog power
supply (common)
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.
Frequency setting
power supply
This terminal supplies 10 VDC power to the O, O2, OI terminals.
Allowable load current:
20 mA or less
Frequency
command
(voltage)
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 impedance: 10kΩ
Allowable input voltages: -0.3
to +12 VDC
Auxiliary
frequency
command
(voltage)
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 impedance: 10kΩ
Allowable input voltages:
0 to 12 VDC
Frequency
command
(current)
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.
Input impedance: 10kΩ
Maximum allowable current:
24 mA
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.
Maximum allowable current:
2 mA
Output voltage accuracy
±20%
(Ta=25±10 degrees C)
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.
Allowable load impedance:
250Ω or less
Output current accuracy
±20%
(Ta=25±10 degrees C)
Digital monitor
(voltage)
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%.
Maximum allowable current:
1.2 mA
Maximum frequency:
3.6 kHz
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
terminal.
Maximum allowable output
current: 100 mA
Interface power
supply (common)
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.
[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
Function selection and logic
switching
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).
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