Vacon NX User Manual

10
vacon • 158 Active front end (NXA)
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
Control
connections
(apply to boards
OPT-A1, OPT-A2
and OPT-A3)
Analogue input
voltage
0…+10 V, R
i
= 200 kΩ, (–10 V…+10 V joystick control)
Resolution 0.1%, accuracy ±1%
Analogue input
current
0(4)…20 mA, Ri = 250 W differential
Digital inputs (6) Positive or negative logic; 18…24 VDC
Auxiliary voltage
+24 V, ±10%, max volt. ripple < 100 mVrms;
max. 250 mA
Dimensioning: max. 1000 mA/control box
1A external fuse required (no internal short-circuit
protection on the control board)
Output reference
voltage
+10 V, +3%, max. load 10 mA
Analogue output
0(4)…20 mA; R
L
max. 500 Ω; 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 VDC/8 A, 250 VAC/8 A,
125 VDC/0.4 A
Min. switching load: 5 V/10 mA
Protections
Overvoltage trip
limit
NX_5: 911 VDC
NX_6: (CH61, CH62, CH63 & CH64): 1258 VDC
NX_8: 1300 VDC
Undervoltage trip
limit
NX_5: 333 VDC; NX_6: 461 VDC; NX_8: 461 V (all
VDC)
Earth fault protection
In case of earth fault in motor or motor cable, only
the AC drive is protected.
Mains supervision
Trips if any of the input phases is missing (AC drives
only).
Input phase
monitoring
Trips if any of the output phases is missing.
Unit overtemperature
protection
Alarm limit: 65 ºC (heatsink); 75 ºC (circuit boards).
Trip limit: 70 ºC (heatsink); 85 ºC (circuit boards).
Overcurrent
protection
Yes
Unit overheat
protection
Yes
Short-circuit
protection of +24 V
and +10 V reference
voltages
Yes
Table 61. Technical data

Vacon NX Specifications

General

Product Type	AC Drive
Control Method	Scalar Control
Enclosure	IP00, IP21
Communication	Ethernet
Safety	STO (Safe Torque Off)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short Circuit
Ambient Temperature Range	-10°C to +50°C (with derating above +40°C)
Cooling Method	Air-cooled, Liquid-cooled