2.1.4.2 Power Requirements
Power Requirements
Item Min Nom Max Units
UCSC Controller Input Power
—
18 30.8
Watts
Voltage
18 24/28 30
V dc
Input Capacitance
—
25
—
uF
Surge Protection
Non-replaceable 4 A 125 V dc rated fuse
Nominal melting: 26 A squared seconds (A
2
sec)
Reverse Polarity Protection
Provided
Reversing the + and - input will not damage the UCSC, nor will it power up.
3-pin Power Plug
Item
Description
Pin 1 Ground
Pin 2
Negative
The UCSC case is bonded to power supply negative.
Pin 3 Positive
Wire Sizes 28 to 16 AWG
Screw Torque 0.23 Nm (2 in-Ib)
Part Number
Phoenix Contact MC 1,5/ 3-STF-3,81 - 1827716
Controllers GEH-6855_Vol_II System Guide 25
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