Vacon NX User Manual

5
vacon • 58 Installation
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
In tables below you will find the specifications related to the cooling agent and its circulation. See
also Table 9 on page 25.
NOTE! Unless minimum liquid flow rate is ensured, air pockets may develop in the cooling
elements. Automatic or manual de-airing of the cooling system must also be ensured.
The following table will help you to determine the appropriate flows of cooling agent (l/min) with
given power losses (see Chapter 4.2).
Table 19. Information about cooling agent and its circulation
Chassis
Min. liquid flow
per element
(drive)
[dm
3
/min]
Nom. liquid flow per element
(drive)
[dm
3
/min]
Max. liquid flow
per element
(drive)
[dm
3
/min]
Liquid volume/
element
[l]
A A B C A A
CH3 3 (3) 5 (5) 5.4 (5.4) 5.8 (5.8) 20 (20) 0.11
CH4 8 (8) 10 (10) 11 (11) 12 (12) 20 (20) 0.15
CH5 10 (10) 15 (15) 16 (16) 17 (17) 40 (40) 0.22
CH60 15 (15) 25 (25) 27 (27) 29 (29) 40 (40) 0.38
CH61 15 (15) 25 (25) 27 (27) 29 (29) 40 (40) 0.38
CH62 15 (15) 25 (25) 27 (27) 29 (29) 40 (40) 0.38
CH63 15 (30) 25 (50) 27 (54) 29 (58) 40 (80) 0.38
CH64 15 (45) 25 (75) 27 (80) 29 (86) 40 (120) 0.38
CH72 20 (20) 35 (35) 37 (37) 40 (40) 40 (40) 1.58
CH74 20 (60) 35 (105) 37 (112) 40 (121) 40 (120) 1.58
A = 100% water; B = Water/Glycol mixture 80:20; C = Water/Glycol mixture (60:40)
Definitions:
Min liquid flow = Minimum flow rate to ensure of total venting of the
cooling element
Nom liquid flow = Flow rate that allows running the drive at Ith
Max liquid flow = If flow rate exceeds max liquid flow, risk of cooling
element erosion increases
Liquid ref temperature, input: 30 ºC
Max temperature rise during circulation: 5 ºC
Table 20. Cooling agent flow rates (l/min) in relation to power loss at certain glycol/water mixture
Power loss [kW] Glycol/Water ratio
100/0 80/20 60/40 40/60 20/80 0/100
1 4.41 3.94 3.58 3.29 3.06 2.87
2 8.82 7.88 7.15 6.58 6.12 5.74
3 13.23 11.82 10.73 9.87 9.18 8.61
4 17.64 15.75 14.31 13.16 12.24 11.48
5 22.05 19.69 17.88 16.45 15.30 14.35

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