INVT IVC3 Series Quick Reference Manual page 4

Figure 5-2 Diagram of installation by using screws
5.3 Cable connection and specifications
Power cable and grounding cable connection
Figure 5-3 shows the connection of the AC and auxiliary power supplies.
AC - L
AC - N
N L +24V COM S/S
+24V
Switch-mode
+5V
power supply
GND
IVC3-1616MAT
Figure 5-3 Connection diagram of the AC and auxiliary power supplies
The anti-electromagnetic interference capability of the PLCs can be improved
by configuring reliable grounding cables. When installing a PLC, connect the
power supply terminal
to the ground. It is recommended that you use
connection wires of AWG12 to AWG16 and try to shorten the wires, and that you
configure independent grounding and keep the grounding cables away from those of
other devices (especially those generating strong interference), as shown in Figure
5-4.
Other
PLC PLC
devices
Optimal
Figure 5-4 Grounding diagram
Cable specifications
For the wiring of the PLC, it is recommended that you use multi-stranded
copper wire and prepare insulated terminals to ensure the wiring quality. Table
5-2 describes the recommended wire cross-sectional areas and models.
Table 5-2 Recommended cross-sectional areas and models
Coss-sectional
Cable
area of wire
AC power
1.0–2.0mm²
cable (L, N)
Grounding
2.0mm²
cable ( )
Input signal
0.8–1.0mm²
cable (X)
Output
signal 0.8–1.0mm²
cable (Y)
Fix the processed cable terminals onto the wiring terminals of the PLC by
using screws. Pay attention to the positions of the screws. The tightening
torque for the screws is 0.5 to 0.8 Nm, which can be used to complete reliable
connection without damaging the screws.
Figure 5-5 shows the recommended cable preparation mode.
+24V +24V
X0 X17 X0 X7
IVC3 series
special function
IVC-EH-0808ENR
Other
PLC
devices
devices
Good Worst
Cmpatible wiring
Recommended
terminals and
wire model
heat-shrinkable tubing
H1.5/14 preinsulated
AWG12, 18 tube-like terminal, or hot
tin-coated cable terminal
H2.0/14 preinsulated
AWG12 tube-like terminal, or hot
tin-coated cable terminal
AWG18, 20 UT1-3 or OT1-3
cold-pressed terminal, Φ3
or Φ4 heat-shrinkable
AWG18, 20
tubing
Less than 5.0
Warning
Do not connect transistor output to AC circuits, such as a circuit of 220 V AC.
Strictly follow the electrical parameters to design the output circuits. Ensure
that no overvoltage or overcurrent occurs.
6 Power-on, operation, and routine
maintenance
COM
6.1 Power-on and operation
After the wiring is complete, check all the connections. Ensure that no foreign
matters have dropped inside the housing and heat dissipation is in good
module conditions.
1. Power on the PLC.
The POWER indicator of the PLC is on.
2. Start the Auto Station software on the PC and download the compiled user
program to the PLC.
3. After the program is downloaded and verified, set the mode selection
switch to ON.
The RUN indicator is on. If the ERR indicator is on, it indicates that errors
occur on the user program or the system. In this case, rectify the errors by
referring to the instructions in the IVC Series Small-sized PLC
Programming Manual.
Other
4. Power on the PLC external system to perform commissioning on the
system.
6.2 Routine maintenance
Pay attention to the following aspects when performing routine maintenance
and inspection:
1. Ensure that the PLC operates in a clean environment, preventing foreign
matters or dust from dropping into the machine.
2. Keep the PLC in good ventilation and heat dissipation conditions.
3. Ensure that the wiring is properly performed and all the wiring terminals
are well fastened.
User notice
1. The warranty covers only the PLC machine.
2. The warranty period is 18 months. We provide free-of-charge
maintenance and repairs for the product if it is faulty or damaged during
proper operation within the warranty period.
3. The warranty period starts from the ex-factory date of the product. The
machine No. is the only basis for determining whether the machine is
within the warranty period. A device without the machine No. is deemed
out-of-warranty.
4. Maintenance and repair fees are charged in the following scenarios even
the product is within the warranty period:
• Faults are caused due to misoperations. Operations are not performed
following the instructions provided in the manual.
• The machine is damaged due to causes such as fire, flood, or voltage
exceptions.
• The machine is damaged due to improper use. You use the machine to
perform some unsupported functions.
5. The service fees are calculated based on the actual fees. If there is a
contract, the provisions stated in the contract prevail.
6. Keep this warranty card. Show it to the maintenance unit when you seek
maintenance services.
7. Contact the local dealer or directly contact our company if you have any
questions.
Customer Service Center (China)
INVT Auto-Control Technology (Shenzhen) Co., Ltd.
Address: Gaofa Technology Park, Longjing, Nanshan District, Shenzhen
Postal code: 518055
Company website: http://www.invt-control.com/en/index.html
Version: V1.2
All rights reserved. The content of this manual is subject to change without
prior notice.
Heat-
shrinkable
UT Cold-pressed
tubing
terminal
OT Cold-pressed
Less than5.0
Heat-shrinkable tubing
terminal
H-type preinsulated
cold-pressed terminal
Hot tin-coated
cable terminal
Figure 5-5 Cable preparation diagram
Date: 2018-08-17
Wire No. Wire
18
47
682
Wire
PG
4