Danfoss VLT HVAC Drive User Manual

Par. No. # Parameter description Default value 4 set-up Change during
operation
Conver-
sion index
Type
22-8* Flow Compensation 22-80 Flow Compensation [0] Disabled All set-ups TRUE - Uint8 22-81 Square-linear Curve Approximation 100 % All set-ups TRUE 0 Uint8
22-82 Work Point Calculation [0] Disabled All set-ups TRUE - Uint8
22-83 Speed at No-Flow [RPM] ExpressionLimit All set-ups TRUE 67 Uint16
22-84 Speed at No-Flow [Hz] ExpressionLimit All set-ups TRUE -1 Uint16
22-85 Speed at Design Point [RPM] ExpressionLimit All set-ups TRUE 67 Uint16
22-86 Speed at Design Point [Hz] ExpressionLimit All set-ups TRUE -1 Uint16
22-87 Pressure at No-Flow Speed 0.000 N/A All set-ups TRUE -3 Int32
22-88 Pressure at Rated Speed 999999.999 N/A All set-ups TRUE -3 Int32
22-89 Flow at Design Point 0.000 N/A All set-ups TRUE -3 Int32
22-90 Flow at Rated Speed 0.000 N/A All set-ups TRUE -3 Int32
VLT
®
HVAC Drive Instruction Manual
6. How to program the adjustable frequency
drive
MG.11.A4.22 - VLT
®
is a registered Danfoss trademark 125
6

Danfoss VLT HVAC Drive Specifications

General

Type	VLT HVAC Drive
STO (Safe Torque Off)	Yes
Enclosure	IP20
Output Frequency	0-500 Hz
Brake Chopper	Built-in (depending on frame size)
EMC Filter	Built-in (depending on frame size)
Communication	Ethernet
Power Range	0.37 kW to 630 kW
Input Voltage	200-240V, 380-480V, 525-600V
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Ambient Temperature	-10°C to +50°C (with derating above +40°C)
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% (non-condensing)
Cooling Method	Air-cooled