SJ100DN Inverter
57
Inverter Control Sequence 1
– In this first sequence, the DeviceNet host computer will
control the inverter (Run/Stop), but the inverter will use its internal parameters for output
frequency / accel / decel (F_01, F_02, and F_03). This sequence assumes that you have
successfully completed the Monitoring Sequence in Step 6.
a.
Confirm that the DeviceNet network is online, and the host computer is scanning
the network.
b.
Confirm that the Run Key Enable LED is still ON. It is directly above the Run
key. If it is OFF, then be sure to set A_02 = 02. (This sequence will not make use
of the Run key, but it will ask you to observe the Run Key Enable LED.)
c.
Confirm that the motor is stopped.
d.
Refer to the control byte in Word 0 as shown below. With the host computer, set
the Network Control bit (bit 5) = 1. As you do this, notice that the Run Key
Enable LED on the inverter turns OFF. This indicates that the inverter has
switched its control source from local to network control.
e.
Turn ON the FW Run bit (bit 0) in Word 0 as shown below. The motor will now
begin to run. The output frequency will be 15.00Hz (set by F_01). To verify the
motor speed, monitor D_01 on the inverter display, or use the host computer to
observe the actual output frequency reported in the polled I/O.
f.
Now turn OFF the FW Run bit (bit 0) in Word 0 as shown below. The motor will
now stop.
The first control sequence is complete. The host computer controlled the inverter with
Run/Stop, allowing the inverter to use its own profile parameters (F_01, F_02, F_03).
MSB
LSB
High byte
MSB
LSB
Low byte
Word 0
0020h
Hex
32
Decimal
Network Control
FW Run
Inverter Polled I/O
Consumed (Input)
0 0 1 0
0 0 0 0
0 0 0 0
0 0 0 0
MSB
LSB
High byte
MSB
LSB
Low byte
Word 0
0021h
Hex
33
Decimal
Network Control
FW Run
0 0 1 0
0 0 0 1
0 0 0 0
0 0 0 0
MSB
LSB
High byte
MSB
LSB
Low byte
Word 0
0020h
Hex
32
Decimal
Network Control
FW Run
0 0 1 0
0 0 0 0
0 0 0 0
0 0 0 0
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