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1. SPECIFICATIONS OF MOTION SYSTEM COMPONENTS
1
−
21
(6) Functions and performance specificotions of
A173UHCPU/A172SHCPUN/A171SHCPUN internal power supply.
Table 1.4 Internal Power Supply Specifications
Item Specifications
Model name A173UHCPU/A172SHCPUN A171SHCPUN
Input power supply
100 to 240 VAC
+10%
-15%
(85 to 264 VAC)
Input frequency 50/60 Hz 5 %
Max. apparent input power 105VA
Rush current 20A 8ms max.
5VDC 5A 3A
Rated output current
24VDC
10% 0.6A
5VDC 5.5 A min. 3.3 A min.
Overcurrent protection
*
1
24VDC 0.66 A min.
5VDC 5.5 to 6.5 V
Overvoltage protection
*
2
24VDC
Efficiency 65% min.
Power indicator LED indicator (Lit at 5VDC output)
Terminal screw size M3.5 7
Applicable power cable size 0.75 to 2mm
2
Applicable solderless terminal RAV 1.25-3.5 RAV 2-3.5
Applicable tightening torque 59 to 88 N
⋅
cm
Permissible instantaneous power interruption
time
20ms max.
POINTS
*1: Overcurrent protection
When current in excess of the specifications flows through the 5 VDC or
24 VDC circuits, the overcurrent protection device breaks the circuit and
stops the system.
A drop in voltage will extinguish or dim the CPU module indicator
“POWER” display.
After overcurrent protection operates, start up the system after
eliminating the cause, such as insufficient current capacity or short
circuit.
The system initial start commences when the current returns to the
normal level.
*2: Overvoltage protection
When an overvoltage of 5.5 V to 6.5 V is applied to a 5 VDC circuit, the
overvoltage protection device breaks the circuit and stops the system.
The CPU module indicator goes out.
To restart the system, switch the input power supply off, and then turn it
back on. The system initial start commences.
If the system does not start up and the indicator “POWER” display
remains off, the CPU module must be changed.