Hitachi SJ700B SERIES Quick Reference Manual page 20

Chapter 2 Installation and Wiring
(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
(+, RB) resistor connection
P, N Dynamic braking unit
(+, -) connection
G
Inverter ground
(2) Explanation of control circuit terminals
Symbol Terminal name
Analog power
L
(common)
Frequency
H setting power
Frequency
O command
frequency
O2
command
Frequency
OI command
Analog monitor
AM
Analog monitor
AMI
Digital monitor
FM
Interface power
P24
Interface power
CM1
(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
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,
supply 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.
supply
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)
voltage using function "A014".
Auxiliary 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
(voltage) 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
(current)
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),
(voltage)
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,
(current)
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
(voltage) 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
supply
input 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
supply
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 60 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).
Description
dynamic braking unit (BRD).
Description
2 - 8
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:
+/-10%
(Ta=25+/-10 degrees C)
Allowable load impedance:
250Ω or less
Output current accuracy:
+/-10%
(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
Minimum hold time
FW and RV: 10msec
Other: 40msec