4 drive will not respond to control signals – GE Industrial Solutions AF-600 FP Profibus DP User Manual
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8.2.3 Warning 34 Appears even though Communication is Established
If the PLC is in stop mode Warning 34 will appear. Check that the PLC is in run mode.
8.2.4 Drive Will Not Respond to Control Signals
Check 1: Is the Control word valid?
If bit 10=0 in the Control word, then the drive will not accept the Control word, because the default setting is bit 10=1. Set bit 10=1 via the PLC.
Check 2: Is the relationship between bits in the Control word and the terminal I/Os correct?
Check the logical relationship in the drive.
Set the logic to bit 3=1 AND digital input=1 in order to achieve a successful start.
Define the desired logical relationship in par. O-50 Coasting Select to par. O-56 Preset Reference Select according to the following range of options. Select the Drive
control mode, digital input and/or serial communication, using par. O-50 Coasting Select to par. O-56 Preset Reference Select.
The tables below show the effect upon the frequency converter of a coast command for the full range of par. O-50 Coasting Select settings.
The effect of control mode upon the function of par. O-50 Coasting Select, par. O-51 Quick Stop Select and par. O-52 DC Brake Select is as follows:
If Digital input [0] is selected, the terminals will control the Coast and DC Brake
functions.
NB!
Please note that Coasting, Quick Stop and DC brake functions are active for
logic 0.
Digital input [0]
Terminal
Bit 02/03/04
Function
0
0
Coast/DC brake/Q-Stop
0
1
Coast/DC brake/Q-Stop
1
0
No Coast/DC brake/Q-Stop
1
1
No Coast/DC brake/Q-Stop
If Serial communication [1] is selected, commands will be activated only when
given via serial communication.
Serial communication [1]
Terminal
Bit 02/03/04
Function
0
0
Coast/DC brake/Q-Stop
0
1
No Coast/DC brake/Q-Stop
1
0
Coast/DC brake/Q-Stop
1
1
No Coast/DC brake/Q-Stop
If Logic AND [2] is selected, both signals must be activated to perform the
function.
Logic AND [2]
Terminal
Bit 02/03/04
Function
0
0
Coast/DC brake/Q-Stop
0
1
No Coast/DC brake/Q-Stop
1
0
No Coast/DC brake/Q-Stop
1
1
No Coast/DC brake/Q-Stop
AF-650 GP/AF-600 FP Profibus DP Operating Instructions
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