Ge Drive Control Profile - GE AF-650 GP PROFINET Operating Instructions Manual

How to Control the Frequenc...

6.5 GE Drive Control Profile

6.5.1 Control Word according to Drive
Profile (CTW)
To select GE Drive protocol in the control word, O-10 Control
Word Profile must be set to GE Drive protocol [0]. The control
word is used to send commands from a master (PLC or PC) to
a slave (frequency converter).
Please refer to 9 Application Examples for an example of a
control word message using PPO type 3.
Bit Bit value = 0
00 Reference value
01 Reference value
02 DC brake
03 Coasting
04 Quick stop
05 Hold output frequency
06 Accel/Decel stop
07 No function
08 No function
09 Ramp 1
10 Data invalid
11 No function
12 No function
13 Parameter set-up
14 Parameter set-up
15 No function
Explanation of the Control Bits
Bits 00/01 Reference value
Bits 00 and 01 are used to choose between the four
reference values, which are pre-programmed in C-05 Multi-
step Frequency 1 - 8 according to Table 6.1:
NOTE
In O-56 Preset Reference Select a selection is made to define
how Bit 00/01 gates with the corresponding function on the
digital inputs.
Programmed Parameter
ref. value
1 C-05 Multi-step
Frequency 1 - 8 [0]
2 C-05 Multi-step
Frequency 1 - 8 [1]
3 C-05 Multi-step
Frequency 1 - 8 [2]
4 C-05 Multi-step
Frequency 1 - 8 [3]
PROFINET Operating Instruction
Bit value = 1
external selection lsb
external selection msb
Accel/Decel
No coasting
Accel/Decel
Use Accel/Decel
Start
Reset
Jog
Accel/Decel 2
Data valid
Relay 01 active
Relay 04 active
selection lsb
selection msb
Reverse
Bit 01 Bit 00
0 0
0 1
1 0
1 1
Bit 02, DC brake
Bit 02 = 0 leads to DC braking and stop. Braking current and
duration are set in B-01 DC Brake Current and B-02 DC Braking
Time. Bit 02 = 1 leads to ramping.
Bit 03, Coasting
Bit 03 = 0 causes the frequency converter to immediately "let
go" of the motor (the output transistors are "shut off"), so
that it coasts to a standstill.
Bit 03 = 1 enables the frequency converter to start the motor
if the other starting conditions have been fulfilled.
NOTE
In O-50 Coasting Select a selection is made to define how Bit
03 gates with the corresponding function on a digital input.
Bit 04, Quick stop
Bit 04 = 0 causes a stop, in which the motor speed is ramped
down to stop via C-23 Quick Stop Decel Time.
Bit 05, Hold output frequency
Bit 05 = 0 causes the present output frequency (in Hz) to
freeze. The frozen output frequency can then be changed
only by means of the digital inputs (E-01 Terminal 18 Digital
Input to E-06 Terminal 33 Digital Input) programmed to Speed
up and Speed down.
NOTE
If Freeze output is active, the frequency converter can only be
stopped by the following:
•
Bit 03 Coasting stop
•
Bit 02 DC braking
•
Digital input (E-01 Terminal 18 Digital Input to
E-06 Terminal 33 Digital Input) programmed to DC
braking, Coasting stop or Reset and coasting stop.
Bit 06, Ramp stop/start:
Bit 06 = 0 causes a stop, in which the motor speed is ramped
down to stop via the selected ramp down parameter.
Bit 06 = 1" permits the frequency converter to start the
motor, if the other starting conditions have been fulfilled.
NOTE
In O-53 Start Select a selection is made to define how Bit 06
Ramp stop/start gates with the corresponding function on a
digital input.
Bit 07, Reset
Bit 07 = "0" does not cause a reset. Bit 07 = "1" causes the
reset of a trip. Reset is activated on the signals leading edge,
i.e. when changing from logic "0" to logic "1".
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