Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 320)

Section 5B
9/440HR CNC/Drive System
5B-30
24 Volt logic power is supplied to the 9/440HR to run the processor board
and axis module logic boards. The 24 volts are provided from a customer
supplied transformer. Specifications for this supply are:
Transformer Input Voltage 9/440HR Input Voltage Range (Transformer Output) Number of Axis Modules
125/240 V AC
(85-265 V AC @50/60 Hz)
24V ac (19 -- 28V ac, single phase @50/60 Hz)
or
1 2 3 4
(85-265 V AC @50/60 Hz) or
24V dc (18.75 -- 31.25V)
3.5 A 4.4 A 5.2 A 6.0 A
24V dc (18.75 -- 31.25V)
3.5 A 4.4 A 5.2 A 6.0 A
On/Off connections are made through the Allen-Bradley On/Off Control
assembly (8520-OFC). This assembly allows connection to the standard
MTB panel on/off switch and should be used to supply power to your 24 V
transformer.
Figure 5B.16
On/Off Control Assembly
ON SW
COMMON
OFF SW
AC IN
AUX AC
AC POWER
FUSE
8A/250V
ALLEN--BRADLEY
Incoming AC Power
85--265 Volts AC
To MTB panel
ON/OFF switch
Switched AC Out
85--265 Volts AC 8 amp max
PE
L1
L1
L2
L2
5B.5.1
On/Off Control and
24V Logic Power