Status Messages - Operating Mode; Status Messages - Reference Site; Status Messages - Operation Status - Danfoss VLT HVAC Drive FC 102 Operating Manual

Operating Guide | VLT® HVAC Drive FC 102

9.2.2 Status Messages - Operating Mode

Table 69: Operating Mode
Operating Description
mode
Off The drive does not react to any control signal until [Auto On] or [Hand On] is pressed.
Auto The drive requires external commands to execute functions. The start/stop commands are sent via the control ter-
minals and/or the serial communication.
Hand The navigation keys on the LCP can be used to control the drive. Stop commands, reset, reversing, DC brake, and
other signals applied to the control terminals override local control.

9.2.3 Status Messages - Reference Site

Table 70: Reference Site
Reference site
Remote
Local

9.2.4 Status Messages - Operation Status

Table 71: Operation Status
Operation Description
status
AC brake AC brake was selected in parameter 2-10 Brake Function. The AC brake overmagnetizes the motor to achieve a con-
trolled slow down.
AMA finish Automatic motor adaptation (AMA) was carried out successfully.
OK
AMA ready AMA is ready to start. To start, press [Hand On].
AMA run- AMA process is in progress.
ning
Braking The brake chopper is in operation. The brake resistor absorbs the generative energy.
Braking The brake chopper is in operation. The power limit for the brake resistor defined in parameter 2-12 Brake Power Limit
max. (kW) has been reached.
Coast • [2] Coast inverse was selected as a function for a digital input (parameter group 5–1* Digital Inputs). The corre-
sponding terminal is not connected.
• Coast activated by serial communication.
Ctrl. ramp- [1] Ctrl. ramp-down was selected in parameter 14-10 Mains Failure.
down
• The mains voltage is below the value set in parameter 14-11 Mains Voltage at Mains Fault.
• The drive ramps down the motor in a controlled manner.
Danfoss A/S © 2018.10
Description
The speed reference is given from
• External signals.
• Serial communication.
• Internal preset references.
The drive uses reference values from the LCP.
Maintenance, Diagnostics, and
Troubleshooting
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