Technical item or function
Technical data
Control connections
Analog input voltage
0…+10 V, Ri = 200 kW, (-10 V…+10 V joystick control)
Resolution 0.1%, accuracy ±1%
Analog input current
0(4)…20 mA, Ri = 250 W differential
Digital inputs (6)
Positive or negative logic; 18…30 V DC
Auxiliary voltage
+24 V, ±15%, maximum 250 mA
Output reference voltage
+10 V, +3%, maximum load 10 mA
Analog output
0(4)…20 mA; RL maximum 500 W; Resolution 10 bit; Accuracy ±2%
Digital outputs
Open collector output, 50 mA/48 V
Relay outputs
2 programmable change-over relay outputs
Switching capacity 24 V DC/8 A, 250 V AC/8 A, 125 V DC/0.4 A
Minimum switching load: 5 V/10m A
Protections
Overvoltage trip limit
NXI_5: 911 V DC
NXI_6: 1200 V DC
Undervoltage trip limit
NXI_5: 333 V DC
NXI_6: 460 V DC
Earth fault protection
If there is ground fault in motor or motor cable, only the inverter is
protected
Output phase supervision
Trips if any of the output phases is missing
Overcurrent protection
Yes.
(1)
The motor overload protection activates at 110% of the full
load current.
Unit overtemperature protection
Yes
Motor overload protection
Yes
Motor stall protection
Yes
Motor underload protection
Yes
Short-circuit protection of +24 V
and +10 V reference voltages
Yes
1
For the motor thermal memory and the memory retention function to comply with the UL 508C requirements, use the system software version NXS00001V175, NXS00002V177, or
NXP00002V186 or a newer version. With an older system software version, install a motor overtemperature protection to comply with the UL regulations.
12.9 DC Currents and DC Link Capacitance
For DC currents, see:
•
12.9.1 DC Currents, Supply Voltage 465–800 V DC
•
12.9.2 DC Currents, Supply Voltage 640–1100 V DC
For DC link capacitance, see
Specifications
Operating Guide | VACON® NX Inverters FI4-FI8
AQ299433367205en-000101 / DPD00908
124 | Danfoss A/S © 2019.07
Summary of Contents for VACON NX FI4
Page 1: ...Operating Guide VACON NX Inverters FI4 FI8...
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