LG Electronics 120S Handling Instructions, Main unit or Expansion Module handling instructions

Chapter 9 Installation and Wiring

(6)Power consumption of the special module

•WS = I5V X 5 + I24V X 24 (W)

(7)The sum of the above values is the power consumption of the entire PLC system.

•W = WPW + W5V + W24V + Wout + Win + Ws (W)

(8)Check the temperature rise within the control panel with calculation of that total power consumption(W). The temperature rise in the control panel is expressed as:

T = W / UA [°C]

W : Power consumption of the entire PLC system(obtained as shown above)
A : Control panel inside surface area [m2]
U : if the control panel temperature is controlled by a fan, etc	6
if control panel air is not circulated	4

9.1.2 Handling Instructions

•Do not drop it off, and make sure that strong shock should not be applied.

•Do not unload the PCB from its case. It can cause faults.

•During wiring, be sure to check any foreign matter like wire scraps should not enter into the upper side of the PLC. If any foreign matter has entered into it, always eliminate it.

1)Main unit or Expansion Module handling instructions

The followings explains instructions for handling or installing the Base unit or Expansion Module.

(1) I/O specifications re-check

Re-check the input voltage for the input part. if a voltage over the maximum switching capacity is applied, it can cause faults, destruction or fire.

(2) Used wire

Select the wire with due consideration of ambient temperature and rated current. Its minimum specifications should be AWG24(0.18 ㎟) or more.

(3) Environment

When wiring the I/O part, if it locates near a device generating an cause short circuit, destruction or malfunction.

(4) Polarity

Before applying the power to part that has polarities, be sure to check its polarities.

(5) Terminal block

Check its fixing. During drilling or wiring, do not allow any wire scraps to enter the PLC. It can cause malfunction and fault.

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