Danfoss VLT Ea4, Operating Manual

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6.9.81 ALARM 83, Illegal Option Combination
Cause
The mounted options are incompatible.
6.9.82 ALARM 84, No Safety Option
Cause
The safety option was removed without applying a general reset.
Troubleshooting
Reconnect the safety option.
6.9.83 ALARM 85, Dang Fail PB
Cause
PROFIBUS/PROFIsafe error.
6.9.84 ALARM 88, Option Detection
Cause
A change in the option layout is detected. Parameter 14-89 Option Detection is set to [0] Frozen configuration and the option layout
has been changed.
Troubleshooting
To apply the change, enable option layout changes in parameter 14-89 Option Detection .
Alternatively, restore the correct option configuration.
6.9.85 WARNING 89, Mechanical Brake Sliding
Cause
The hoist brake monitor detects a motor speed exceeding 10 RPM.
6.9.86 ALARM 90, Feedback Monitor
Troubleshooting
Check the connection to the encoder/resolver option and, if necessary, replace the VLT
®
Encoder Input MCB 102 or VLT
®
Resolv-
er Input MCB 103.
6.9.87 ALARM 91, Analog Input 54 Wrong Settings
Troubleshooting
Set switch S202 in position OFF (voltage input) when a KTY sensor is connected to analog input terminal 54.
6.9.88 ALARM 99, Locked Rotor
Cause
The rotor is blocked.
Troubleshooting
Check if the motor shaft is locked.
Check if the start current triggers the current limit set in
parameter 4-18 Current Limit .
Check if it increases the value in parameter 30-23 Locked Rotor Detection Time [s] .
6.9.89 WARNING/ALARM 104, Mixing Fan Fault
Cause
The fan is not operating. The fan monitor checks that the fan is spinning at power-up or whenever the mixing fan is turned on. The
mixing fan fault can be configured as a warning or an alarm in
parameter 14-53 Fan Monitor .
Troubleshooting
Cycle power to the drive to determine if the warning/alarm returns.
6.9.90 WARNING/ALARM 122, Mot. Rotat. Unexp.
Cause
The drive performs a function that requires the motor to be at standstill, for example DC hold for PM motors.
AQ434333248451en-000101 / 130R1286 62 | Danfoss A/S © 2023.01
Operating the Drive
VLT Ea4 Parallel Drive Modules
Operating Guide