EAGLEHAWK NX CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS
EN1Z-1039GE51 R1218 22
Power Supply
Powering EAGLEHAWK NX
Power is supplied via a removable terminal plug (attached to
terminals 1 and 2).
The power supply of the EAGLEHAWK NX controller must
conform to Safety Class II. To reduce overall current con-
sumption, the EAGLEHAWK NX can be powered by a switch
power supply (rather than by a transformer). See also Table 2
on pg. 3.
NOTE: Due to the risk of short-circuiting (see Fig. 23), it is
strongly recommended that the EAGLEHAWK NX
controller be supplied with power from a dedicated
transformer. However, if the EAGLEHAWK NX con-
troller is to be supplied by the same transformer
powering other controllers or devices (e.g., the PW
M-Bus Adapter), care must be taken to ensure that
correct polarity is observed.
24 V~
24 V~0
LINE
L
N
CPU 1 CPU 2
NOISE-FREE EARTH GROUND
(ONLY ONE PER SYSTEM)
N, L
EARTH GROUND
USB 2.0
Device Interface
!
REVERSED
POLARITY!
PC 1 PC 2
2 21 1
24V~ 24V~24V~0 24V~0
SHORT-CIRCUITING!
Fig. 23. Incorrect polarity → SHORT-CIRCUITING!
Transformer Data
In Europe, if the EAGLEHAWK NX is powered by trans-
formers, then such transformers must be safety isolating
transformers conforming to IEC61558-2-6. In the U.S. and
Canada, if the EAGLEHAWK NX is powered by transformers,
then such transformers must be NEC Class-2 transformers.
Table 9. 1450 series transformers data
part #
1450 7287
primary side secondary side
-001 120 VAC 24 VAC, 50 VA
-002 120 VAC
2 x 24 VAC, 40 VA, 100 VA
from separate transformer
-003 120 VAC
24 VAC, 100 VA, 24 VDC,
600 mA
-004 240/220 VAC 24 VAC, 50 VA
-005 240/220 VAC
2 x 24 VAC, 40 VA, 100 VA
from separate transformer
-006 240/220 VAC
24 VAC, 100 VA, 24 VDC,
600 mA
Table 10. Overview of CRT Series AC/DC current
transformer primary side
max. AC
current
max. DC
current
CRT 2 230 VAC 2 A 500 mA
CRT 6 230 VAC 6 A 1300 mA
CRT 12 230 VAC 12 A 2500 mA
PRIMARY SIDE
EAGLEHAWK NX
1
2
24 VAC
230 VAC
120 VAC
24 V0
NOT
RECOMMENDED
Fig. 24. Connection of EAGLEHAWK NX controller
RIN-APU24
The RIN-APU24 Uninterruptable Power Supply can be
directly wired to an EAGLEHAWK NX controller.
See RIN-APU24 Uninterruptable Power Supply – Mounting
Instructions (EN0B-0382GE51) for a detailed wiring diagram.
Powering Panel Bus I/O Modules and Field Devices
The EAGLEHAWK NX, Panel Bus I/O modules, and field
devices can be powered by either separate transformers (see
Fig. 25, and Fig. 26) or by the same transformer.
NOTE: Use a min. distance of 10 cm between power cables
and 0…10 V / sensor cables in order to prevent
signal disturbances on the 0…10 V / sensor cables.
See also section "Addressing Panel Bus I/O
Modules" on page 35.
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