Rockwell Automation PDC24 User Manual
Triguard SC300E
PDC24 / PAC
Chassis Power Supplies
(PDC24 / PAC)
Issue 3
INTRODUCTION
PURPOSE
Two Power Supply Units (PSUs) provide a dual-redundant source of 5.4Vand 12Vdc onto the
backplane for the modules mounted in a SC300E chassis. The PSUs are mounted one above
the
other in the left hand side of the chassis as shown.
Each PSU has a fault warning system and a power sharing system. The power sharing system
operates
other
when both PSUs are working. Either PSU has the capacity to power the system if the
one fails.
October 2005
Th
e PSUs operate from the following supplies detailed in Table 1-1:
This document is intended to provide a general understanding of the function of the PAC and
PDC24, sufficient to enable basic maintenance operations to be effected in the field.
Figure 1-1. PDC24 /
008-5098
PAC General view
2
PDC24
/
PAC
October
2005–
Iss
ue 3
Triguard
SC300E
ASSOCIATED DOCUMENTATION
Reference
008-5097
Specification
Nominal input voltage
Input voltage range
Inputfrequency range
Input power
Output power
Outputs
Output hold up time
Inrush current
Title
Model
PDC24
Chassis User Manual
24Vdc
20 to 36Vdc
Not applicable
200W
145W
5.4Vdc @ 18A
12Vdc @ 4A
20 mS
170A, 1.5ms time constant
PAC
110/230Vac Auto ranging
92 to 132Vac or
184 to 264Vac
45 to 65Hz
235W
175W
5.4Vdc @ 23A
12Vdc @ 4A
20mS
30A , 4ms time constant
Isolation
Indicators
Alarm contact ratings
Overall size (mm)
Overall size (inches)
Weight
2.5kVdc
Green –
Yellow –
Red –
175V, 0.25A
420H x 200L x 68W
16.5H x 7.87L x 2.67W
2.3kg
Table 1-1. PDC24/PDC data
Normal
Power Share
Fault
3kVac
Green –
Yellow –
Red -
175V, 0.25A
420H x 200L x 68W
16.5H x 7.87L x 2.67W
2.3kg
Normal
Power Share
Fault
PDC24
/
PAC
October
2005–
Issue 3
3
Tri
guard
SC300E PDC24 / PAC Chassis Power Supplies
ENVIRONMENTAL SPECIF
The maximum ambient temperature measured at the hottest point within the Triguard system
shall
not be greater than 60 degrees centigrade.
Temp
erature operating:
Temperature
Humidity:
EMC/RFI
Vibration/Shock:
Certification:
General Certification: Ref. SC300E TMR Product Guide (ref 008-5209).
storage:
Immunity:
ICATIONS
+5°C to +60°C
-
25°C to +70°C
5% to 95% non-condensing at ambient < 40°C
Tested and certified to IEC 1131-Part 2 1994
Tested and certified to IEC 1131-Part 2 1994
TRANSPORT AND HANDLING
The PSU must be transported and stored in its original packing material which should be
retained for this purpose.
4
PDC24
/
PAC
October
2005–
Iss
ue 3
Triguard
SC300E
TECHNICAL DESCRIPTIO
N
PHYSICAL
The PSU comprises a front plate mounted at right angles to a chassis plate. All the user
controls and indicators are mounted on the front plate as shown in Figure 1-1.
The chassis plate supports three main items:
• Power supply unit: A self-contained switch-mode power supply unit (SMPS).
•
• PSU interface PCB: Contains the power share and fault alarm circuits. Interfaces these
A ribbon cable connects the front panel PCB to the SMPS. A mechanical stop fitted to the AC
system chassis power supply slots (marked AC STUD) prevents the insertion of a PDC24 into
a PAC slot.
Front panel PCB: Contains printed wiring and physical support for the controls and
indicators that are viewed and accessed from the front panel.
circuits
and the SMPS to the SC300E chassis backplane via connector PL3.
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