20
Rockwell Automation Publication 750-IN020D-EN-P - May 2017
PowerFlex 755 IP00, NEMA/UL Open Type Drive
Enclosure Fans
Enclosure fans are required and must meet or exceed the performance shown in
for two fans operating at 10.76 CMM (380 CFM) each with 1.27 mm
(0.05 in.) H
2
O static pressure.
Figure 5 - Fan Performance (per bay)
The enclosure fans can be powered from the Control Transformer which is
located in the upper part of the drive assembly. The transformer supplies 230V
AC (±10%) power to the drive and drive blower with sufficient power available
(240 VA/bay) for the enclosure fans. The terminating point for the enclosure fans
is at terminal block TB2 on the right side of the drive assembly (see
•
Recommended wire is 1.3 mm
2
(16 AWG) tinned copper stranded
conductor, PVC insulated, 600V, 105 °C (221 °F).
•
Recommended Connector; Phoenix P/N 1757019, 5.08 mm (.2 in.)
pitch, 2 position, 12A, 250V, 24…12 AWG.
To gain access to the Control Transformer, see the PowerFlex 755 AC Drives
Hardware Service Manual, publication
. To select or verify
transformer primary voltage, see
For Common DC Input drives, the user must provide:
1.
Electrical power to the drive for the enclosure fans, and
2.
overload protection for the drive control transformer. The overload device
must be suitable for 120/240V AC, 50/60 Hz, 8.3/4.2 A, 1 kVA.
Allen-Bradley circuit breaker catalog number 1489-A2D130 is acceptable.
A circuit breaker lock (1489-AALOA) is also available.
For additional information, see the PowerFlex 750-Series AC Drives Installation
Instructions, publication
. See the section “120V/240V AC Power
Supply Connections - Common DC Input Drives.”
0.00
25.0
20.0
15.0
10.0
5.0
0.00
0.98
0.78
0.59
0.39
0.20
0.00
2.55
5.09
7.64
10.19
12.75
0.00
90.0
180.0
270.0
360.0
450.0
Flowrate (CMM)
Flowrate (CFM)
Sta
tic P
ressur
e (mmA
q)
Sta
tic P
ressur
e (InA
q)
50 Hz
60 Hz
Typical enclosure pressure with
ventilation requirements described in
