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7 Diagnostics and Troubleshooting

This chapter describes the status messages, warnings and

alarms and basic troubleshooting.

7.1 Status Messages

When the frequency converter is in status mode, status

messages are generated automatically and appear in the

bottom line of the display (see Illustration 7.1.)

Status

799RPM 7.83A 36.4kW

0.000

53.2%

1(1)

Auto

Hand

O

Remote

Local

Ramping

Stop

Running

Jogging

Stand by

130BB037.11

1 2 3

Illustration 7.1 Status Display

Operation Mode (see Table 7.2)

Reference Site (see Table 7.3)

Operation Status (see Table 7.4)

Table 7.1 Legend to Illustration 7.1

Table 7.2 to Table 7.4 describe the displayed status

messages.

Off

The frequency converter does not react to any

control signal until [Auto On] or [Hand On] is

pressed.

Auto On The frequency converter is controlled from the

control terminals and/or the serial communi-

cation.

Hand On The frequency converter can be controlled by

the navigation keys on the LCP. Stop

commands, reset, reversing, DC brake, and

other signals applied to the control terminals

can override local control.

Table 7.2 Operation Mode

Remote

The speed reference is given from external

signals, serial communication, or internal

preset references.

Local The frequency converter uses [Hand On]

control or reference values from the LCP.

Table 7.3 Reference Site

AC Brake

AC Brake was selected in 2-10 Brake Function.

The AC brake over-magnetizes the motor to

achieve a controlled slow-down.

AMA finish OK Automatic motor adaptation (AMA) was

carried out successfully.

AMA ready AMA is ready to start. Press [Hand On] to start.

AMA running AMA process is in progress.

Braking The brake chopper is in operation. Generative

energy is absorbed by the brake resistor.

Braking max. The brake chopper is in operation. The power

limit for the brake resistor defined in

2-12 Brake Power Limit (kW) has been reached.

Coast

•

Coast inverse was selected as a function

for a digital input (parameter group 5-1*

Digital Inputs). The corresponding terminal

is not connected.

•

Coast activated by serial communication

Ctrl. Ramp-down Control Ramp-down was selected in

14-10 Mains Failure.

•

The mains voltage is below the value set

in 14-11 Mains Voltage at Mains Fault at

mains fault

•

The frequency converter ramps down the

motor using a controlled ramp down

Current High The frequency converter output current is

above the limit set in 4-51 Warning Current

High.

Current Low The frequency converter output current is

below the limit set in 4-52 Warning Speed Low

DC Hold

DC hold is selected in 1-80 Function at Stop

and a stop command is active. The motor is

held by a DC current set in 2-00 DC Hold/

Preheat Current.

Diagnostics and Troubleshoo...

VLT

HVAC Drive Operating Instructions

32 MG11AJ02 - Rev. 2013-07-31

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