Delta AH Series Operation Manual page 29

respectively. To prevent the system from becoming abnormal, the ground in the AC power cable has to be
connected to LG on the power supply module.
The power input of AHPS05-5A is the AC input. You have to pay attention to the following points when you use
AHPS05-5A.
 The alternating-current input voltage is in the range of 100 VAC to 240 VAC. Please connect the power supply to the
terminals L and N. If the 110 VAC or the 220 VAC power supply is connected to the input terminals VS+ and VS-, the
PLC will be damaged.
 In order to ensure that the external power supply stably provides24 VDC power, the external power supply can be
connected to VS+ and VS-. If the PLC detects that the voltage of the external power supply is lower than the working
voltage, you can write a protective program.
 The length of the cable connecting with the ground should be more than 1.6 millimeters.
 If the power cut lasts for less than 10 milliseconds, the PLC keeps running without being affected. If the power cut lasts
for long, or if the voltage of the power supply decreases, the PLC stops running, and there is no output. When the
power supply returns to normal, the PLC resumes. (You have to notice that there are latched auxiliary relays and
registers in the PLC when you write the program.)
 Please use single-core cables or multicore cables. The diameters of the cables used should be in the range of 12
AWG to 22 AWG. The torque applied to the terminal screws should be 9.50 kg-cm (8.25 Ib-in). Please use copper
conducting wires. The temperature of the copper conductive cables should be 60/75°C.
 Safety wiring: The PLC controls many devices, and the activity of any device affects the activity of other devices. If any
device breaks down, the whole automatic control system goes out of control, and the danger occurs. The protection
circuit is shown below.
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