Rockwell Automation Publication 7000-UM202H-EN-P - November 2023 145
Chapter 3 Control Component Definition and Maintenance
DC/DC Power Supply The DC/DC power supply provides a source of regulated DC voltages for
various logic control boards and circuits., using a regulated 56V DC source.
Figure 126 - DC/DC Converter Power Supply
The capacitor at the input terminals enables the equipment to ride through
power dips. If the capacitor (C hold-up) loses the 56V
(a)
input, it maintains the
voltage level for a period of time to enable a controlled shut-down. This
component is not required in all configurations.
Due to the critical nature of the ACB/DPM Logic power source, the DC/DC
power supply provides redundancy for the 5V rail. There are two separate 5V
outputs, each capable of powering the logic boards. In the event of one failing,
the drive switches to the other power supply automatically to provide the
output power.
Terminal/Connections Descriptions
24V-Isolators
24V-XIO
+/-24V-HECS
+/-15V Logic
5V-Logic
Sense Cable
DC/DC Power Supply
C hold-up
56V DC
+
–
(a) 56V DC for Pioneer and Cosel model numbers -XRWAC and earlier. 57V DC for Cosel model numbers -XRWAD and newer.
P1 – DC Input PIN NO. LABEL DESCRIPTION ONLY
1 +56V +56V input
2+56V COMM +56V common
3EARTH earth ground
P2 – SENSE
(To ACB)
PIN NO. LABEL DESCRIPTION ONLY
1 +56V +56V input supply
2 +56V RTN +56V input supply return
3 NC Not connected
4 NC Not connected
5 +24V Isolated +24V supply
6 +24V RTN Isolated +24V supply return
7 NC Not connected
8 NC Not connected
9 +5VA Primary +5V supply, before OR’ing diode
10 DGND(com1) +5V, +/-15V common
11 +5VB
Secondary +5V supply, before OR’ing
diode
12 DGND(com1) +5V, +/-15V common
13 ID0 Power supply ID Pin 0
14 ID1 Power supply ID Pin 1
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