ITT Hydrovar User Manual

50
G
G
G
G
G
Programming
0230
0230 RAMP 4
Ramp 4: Slow acceleration time
70 sec
Possible settings: 1 – 1000 sec
• Rapid deceleration may lead to pump oscillation.
• Slow deceleration may cause pressure uctuations during varying demand.
0235
0235 RAMP F
MIN
A
Ramp F
min
acceleration
2.0 sec
Possible settings: 1.0 – 25.0 sec
Acceleration rate during startup until MIN. FREQUENCY [0250] is reached. Beyond the minimum frequency,
RAMP1 [0215] (fast acceleration ramp) applies.
• Rapid acceleration may cause error (OVERLOAD) during drive startup.
0240
0240 RAMP F
MIN
D
Ramp F
min
deceleration
2.0 sec
Possible settings: 1.0 – 25.0 sec
Deceleration rate applied when the drive has dropped below the MIN. FREQUENCY [0250].
• Rapid deceleration may cause error (OVERVOLTAGE)
0245
0245 MAX. FRQ.
Maximum frequency
60 Hz
Possible settings: 30.0 – 70.0 Hz
This parameter determines the maximum frequency output to the motor. This should be set to the motor
nominal frequency. Default is 60 Hz.
Settings higher than motor nominal frequency may overload the motor! Settings of
10% above nominal frequency increase power consumption by 33%
0250
0250 MIN. FRQ.
Minimum frequency
20.0 Hz
Possible settings: 0.0 – f
max
At operation below MIN. FREQUENCY (0250) the HYDROVAR operates with the fast ramps F
min
A and D,
(0235/0240).
The pump type and application should be considered when setting MIN. FREQ. For
submersible applications the min. frequency must be set to ~30Hz.

ITT Hydrovar Specifications

General

Brand	ITT
Model	Hydrovar
Category	Inverter
Language	English