Danfoss VLT Micro Drive FC 51 Programming Guide

3-52 Ramp2 Ramp-down Time
Range: Function:
Size
related
[0.05-3600.00
s]
Enter ramp down time from rated
motor
frequency (f
M,N
) in 1-23 Motor
Frequency to 0 Hz.
Choose a ramp down time that
does not cause over-voltage in
inverter due to regenerative
operation of motor. Furthermore,
regenerative torque must not
exceed limit set in 4-17 Torque Limit
in Generator Mode.
4.4.6 3-8* Other Ramps
This section contains parameters for Jog and Quick Stop
Ramps.
With
a Jog Ramp it is possible to both ramp up and down
whereas, it is only possible to ramp down with the Quick
Stop Ramp.
3-80 Jog Ramp Time
Range: Function:
Size
related*
[0.05-3600.00
s]
A linear ramp applicable when Jog
is
activated. See parameter group
5-1* Digital Inputs, option [14].
Ramp up time = Ramp down time.
Jog Ramp time starts upon
activation of a jog signal via a
selected digital input or serial
communication port.
3-81 Quick Stop Ramp Time
Range: Function:
Size related* [0.05-3600.00 s] A linear ramp applicable when
Q-stop
is activated. See
parameter group 5-1* Digital
Inputs, option [4].
Parameter Descriptions
VLT
®
Micro Drive FC 51 Programming Guide
24 MG02C602 - VLT
®
is a registered Danfoss trademark
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Danfoss VLT Micro Drive FC 51 Specifications

General

Enclosure	IP20
Output Voltage	0-100% of supply voltage
Altitude	Up to 1000 m without derating
Power Range	0.18-22 kW
Control Method	V/f
Communication	Modbus RTU
Protection Features	Over-voltage, under-voltage, over-current, over-temperature
Ambient Temperature	-10°C to 50°C
Storage Temperature	-25°C to 65°C
Relative Humidity	5-95% (non-condensing)
Input Voltage	200-240 V, 380-480 V
Braking Function	Integrated braking chopper (optional)