sh030051g.pdf - 第337页

13 - 36 13. SERVO AMPLIFIERS WI TH A LARGE CAPACITY ( 30k TO 55kW ) (2) I/O interfaces (a) Digital input interface (DI) Give a signal with a relay or open collector transisto r. Refer to section 3.7.3 for the source inpu…

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13 - 35
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
13.3.6 Converter unit signal (device) explanations
POINT
Explanations on the drive unit signals are the same as those for servo
amplifiers with 22kW or less. Refer to section 3.5.
(1) Signals
For the I/O interfaces (symbols in I/O column in the table), refer to (b) of this section.
Signal name Pin code Pin No. Function/Application
I/O
division
Digital I/F power
supply input
DICOM CN1-1
CN1-6
Used to input 24VDC (24VDC 10% 150mA) for I/O interface. The power supply
capacity changes depending on the number of I/O interface points to be used.
For the source interface, connect
of 24VDC external power supply.
Forced stop EM1 CN1-7 Turn EM1 off to bring the motor to a forced stop state, in which the magnetic
connector is turned off and the servo-off signal is output to the drive unit.
Turn EM1 on in the forced stop state to reset that state.
DI
Trouble ALM CN1-2 ALM turns off when power is switched off or the protective circuit is activated.
Without alarm occurring, ALM turns on within about 1.5s after power-on.
DO
Warning WNG CN1-8 When warning has occurred, WNG turns on. DO
Digital I/F common DOCOM CN1-5
CN1-9
Common terminal for the ALM and WNG output signals of the converter unit.
Separated from LG.
Pins are connected internally. For the source interface, connect
of 24VDC
external power supply.
Magnetic contactor
drive output
MC1 CNP1-1 Connect to the operation coil of the magnetic contactor. Always supplies the
control circuit power since it is conducted with L
11
in the converter unit.
WARNING
Magnetic contactor wiring
connector on the converter unit.
Connected state may cause an
electric shock.
MC2 CNP1-2
(Note)
Connect to the operation coil of the magnetic contactor. When the converter unit
receives a start command from the drive unit, it is conducted with L
21 inside, the
control circuit power is supplied, and then the magnetic contactor is turned ON.
Change parameter No.PA02 setting to “
0” when controlling without
magnetic contactor control connector (CNP1). (Refer to section 13.3.1.)
13 - 36
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
(2) I/O interfaces
(a) Digital input interface (DI)
Give a signal with a relay or open collector transistor. Refer to section 3.7.3 for the source input.
EM1
Converter unit
Switch
Approx. 5mA
For transistor
DICOM
V
CES
1.0V
I
CEO
100 A
TR
24VDC 10
150mA
5.6k
(b) Digital output interface (DO)
A lamp, relay or photocoupler can be driven. Install a diode for an inductive load, or install an inrush
current suppressing resistor for a lamp load. (Permissible current: 40mA or less, inrush current: 100mA
or less) A maximum of 2.6V voltage drop occurs in the servo amplifier.
Refer to section 3.7.3 for the source output.
Converter unit
ALM,
etc.
Load
DOCOM
24VDC 10
150mA
If polarity of diode is
reversed, converter
unit will fail.
(Note)
Note. If the voltage drop (maximum of 2.6V) interferes with the relay operation, apply high
voltage (up to 26.4V) from external source.
13 - 37
13. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
13.3.7 Timing chart
(1) Power circuit timing chart
Power-on procedure
(a) Always wire the power supply as shown in above section 13.3.2 using the magnetic contactor with the
main circuit power supply (3-phase: L
1
, L
2
, L
3
). Configure up an external sequence to switch off the
magnetic contactor as soon as an alarm occurs.
(b) Switch on the control circuit power supply L
11
, L
21
simultaneously with the main circuit power supply or
before switching on the main circuit power supply. If the main circuit power supply is not on, the display
shows the corresponding warning. However, by switching on the main circuit power supply, the warning
disappears and the drive unit will operate properly.
1) When control function of magnetic contactor is enabled and the status remains at ready on
The main circuit power is not shut off with servo off.
ON
OFF
Main circuit
power supply
ON
OFF
Servo on command
(from controller)
ON
OFF
Base circuit
ON
OFF
Converter unit control
power supply
ON
OFF
Drive unit control
power supply
(Note 1)
Electromagnetic
brake interlock (MBR)
0r/min
Servo motor speed
0r/min
Position command
(Note 4)
Release
Activate
Electromagnetic
brake
(95ms)
(3s)
(Note 5)
Tb
Coasting
Electromagnetic
brake operation
delay time
(Note 3)
Release delay time and external relay (Note 2)
ON
OFF
Release delay
time and external
relay (Note 2)
Note 1. ON: Electromagnetic brake is not activated.
OFF: Electromagnetic brake is activated
2. Electromagnetic brake is released after delaying for the release time of electromagnetic brake and operation time of
external circuit relay. For the release delay time of electromagnetic brake, refer to the Servo Motor Instruction Manual
(Vol.2).
3. Make the controller execute the position command after the electromagnetic brake is released.
4. In position control mode
5. “Tb” refers to a delay time when the electromagnetic brake interlock (MBR) is turned off until when the base circuit is shut
off at servo-off. Set Tb using parameter No.PC02.