Danfoss D9h Programming Guide

N O T I C E
Remove a warning arising with [0] Off or [1] Warning by cycling the mains supply. The fault must be corrected first. For [0] Off or
[1] Warning, the drive keeps running even if a fault is located.
Option
Name
Description
[0]*
Off
Monitors brake resistor and brake IGBT for a short circuit during operation. If a short circuit occurs, Warn-
ing 25 Brake resistor shortcircuited appears.
[1]
Warning
Monitors brake resistor and brake IGBT for a short circuit and runs a test for brake resistor disconnection
during power-up.
[2]
Trip
Monitors for a short circuit or disconnection of the brake resistor, or a short circuit of the brake IGBT. If a
fault occurs, the drive cuts out while showing an alarm (trip lock).
[3]
Stop and
trip
Monitors for a short circuit or disconnection of the brake resistor, or a short circuit of the brake IGBT. If a
fault occurs, the drive ramps down to coast and then trips. A trip lock alarm is shown (for example, warn-
ings 25, 27, or 28).
[4]
AC brake
N O T I C E
This option is only available with FC 302.
Monitors for a short circuit or disconnection of the brake resistor, or a short circuit of the brake IGBT. If a
fault occurs, the drive performs a controlled ramp-down.
[5]
Trip lock
Parameter 2-16 AC Brake Max. Current
Table 164: Parameter 2-16 AC Brake Max. Current
2-16 AC Brake Max. Current
Default value: 100%
Parameter type: Range, 0 - 1000.0%
Setup: All setups
Conversion index: -1
Data type: Uint32
Change during operation: True
Enter the maximum allowed current when using AC braking to avoid overheating of motor windings.
N O T I C E
Parameter 2-16 AC brake Max. Current has no effect when parameter 1-10 Motor Construction=[1] PM, non salient SPM.
Parameter 2-17 Over-voltage Control
Table 165: Parameter 2-17 Over-voltage Control
2-17 Over-voltage Control
Default value: [0] Disabled
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
Overvoltage control (OVC) reduces the risk of the drive tripping due to an overvoltage on the DC-link caused by generative power
from the load.
N O T I C E
Do not enable OVC in hoisting applications.
AU275636650261en-000101 / 130R0334 | 117Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide

Danfoss D9h Specifications

General

Brand	Danfoss
Model	D9h
Category	DC Drives
Language	English