53
VLT
®
3500 HVAC
MG.35.B1.02 – VLT is a registered Danfoss trademark
Section 1Section 1Section 1Section 1Section 1
Section 2Section 2Section 2Section 2Section 2
Section 3Section 3Section 3Section 3Section 3
Section 4Section 4Section 4Section 4Section 4
211 Warning: High frequency (HI FREQ. WARN)
Value:
0.0 - 120 Hz + 10%
★
132 Hz
Function:
In this parameter the upper warning limit f
HIGH
of the
output frequency can be set for VLT 3500 HVAC's
normal operating range.
Description of choice:
If the output frequency increases above the set war-
ning limit f
HIGH
, the display says HI FREQ. WARN.
The signal outputs can be programmed to give a war-
ning signal (see parameters 407-410).
212 Warning: Low current, I
LOW
(LO CURR. WARN)
Value:
0.0 - I
VLT,MAX
★
0.0 A
Function:
If the motor current lies below the I
LOW
programmed,
the display reads LO CURR. WARN.
The signal outputs can be programmed to give a
warning signal (see parameters 407-410).
Description of choice:
The lower warning limit I
LOW
of the motor current is
programmed within the normal operating range of the
frequency converter.
213Warning: High current, |LOW (HI CURR. 213
213 Warning: High current, I
HIGH
(HI CURR. WARN)
Value:
0.0 - I
VLT,MAX
★
I
VLT,MAX
Function:
If the motor current lies above the I
HIGH
programmed,
the display reads HI CURR. WARN.
The signal outputs can be programmed to give a
warning signal (see parameters 407-410).
Description of choice:
The upper warning limit I
HIGH
of the motor current is
programmed within the normal operating range of the
frequency converter.
★
= factory setting. Text in ( ) = display text. Figures in [ ] are used when communicating with the bus.
214 Ramp type (RAMP TYPE)
Value:
★
Linear (LINEAR)
[0]
Sine shape (S CURVE 1)
[1]
Sine
2
shape (S CURVE 2)
[2]
Sine
3
shape (S CURVE 3)
[3]
Function:
There is a choice of 4 types of ramps. The sine shapes
ensure a softer start and stop of acceleration and de-
celeration.
Description of choice:
Choose the desired ramp type, depending on how
start/stop is desired to be.
215 Ramp-up time (RAMP UP TIME)
Value:
0.00 - 3600 secs.
★
depends on unit
Function:
The ramp-up time is the acceleration time from 0 Hz
to the rated motor frequency, provided that the output
current is not higher than the current limit (parameter
209).
Description of choice:
The desired ramp-up time is programmed.
216 Ramp-down time (RAMP DOWN TIME)
Value:
0.00 - 3600 secs.
★
depends on unit
Function:
The ramp-down time is the deceleration time to 0 Hz
from the rated motor frequency, provided that no
overvoltage arises in the inverter because of regene-
rative operation of the motor.
Description of choice:
The desired ramp-down time is programmed.
3.6 Parameter gr
oup 2
