GE Series 90-30 PLC - Step 6: Selecting Power Supplies; Power capacity

12-6 Series 90-30 PLC Installation and Hardware Manual – August 2002 GFK-0356Q
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10-slot. If you only need a 5-slot size, you may want to consider whether the extra slots that a
10-slot size provides would be advantageous for possible future expansion. On the other hand,
the 5-slot size requires less space.
 Expansion and Remote baseplates - These also come in 5-slot and 10-slot sizes. In general,
it is best to use Expansion baseplates where possible instead of Remote baseplates because of
the better speed performance of the Expansion baseplates. Where a total cable distance of over
50 feet is required, Remote baseplates must be used. In cases where you only need a 5-slot
size, you may want to consider whether it would be advantageous to use a 10-slot size in order
to have open slots for future expansion. That factor should be weighed against the fact that the
5-slot size requires less space and costs less.
 Physical size - For locations with size limitations, one or more 5-slot baseplates may be a good
choice. See the “Baseplates” chapter for baseplate dimensions and clearance requirements.
 Number of Modules Required - The number of modules needed at each location will have a
bearing on the sizes of racks required. You may choose to use a smaller rack (5-slot), if
possible, to save cost and space. However, as noted below, a larger rack (10-slot) with unused
slots will leave some room for future expansion, if desired.
Step 6: Selecting Power Supplies
The following factors affect your Power Supply selection decisions. See the “Power Supplies”
chapter for additional details.
 Power capacity - All Series 90-30 Power Supplies have three individual outputs: +5VDC,
+24VDC (Relay), and +24VDC (Isolated). Although all of these Power Supplies are rated at
30 Watts maximum total output, the rating of the +5VDC output varies from supply to supply,
as shown in the following table. For applications requiring heavy loading of the +5VDC
supply, choose one of the “High Output” power supplies: IC693PWR330 or IC693PWR331.
 Input voltage - As seen in the next table, nominal input voltage choices are 24VDC, 48VDC,
120VAC, 125VDC, and 240VAC.
Table 12-1. Power Supply Feature Comparison Table
Catalog
Number
Load
Capacity
Nominal
Input
Output Capacities (Voltage/Power *)
IC693PWR321 30 Watts 100 to 240 VAC or
125 VDC
+5 VDC
15 watts
+24 VDC Isolated
20 watts
+24 VDC Relay
15 watts
IC693PWR330 30 Watts 100 to 240 VAC or
125 VDC
+5 VDC
30 watts
+24 VDC Isolated
20 watts
+24 VDC Relay
15 watts
IC693PWR322 30 Watts 24 or 48 VDC +5 VDC
15 watts
+24 VDC Isolated
20 watts
+24 VDC Relay
15 watts
IC693PWR331 30 Watts 24 VDC
+5 VDC
30 watts
+24 VDC Isolated
20 watts
+24 VDC Relay
15 watts
* Total of all outputs combined cannot exceed 30 watts.