INVT IVC-EH-4DA User Manual

IVC-EH-4DA Analog Output Module
User Manual
Thanks for choosing the programmable logic controllers (PLCs) developed
and produced by INVT Auto-Control Technology (Shenzhen) Co., Ltd. Before
using the IVC-EH extension series PLC products, read this manual carefully
to understand the product features, so that you can install and use the
products properly and make full use of its abundant functions.
Note:
Before using the product, read the operation instructions and precautions
carefully to prevent accidents. Only trained personnel can install and operate
the product, and when installing and operating the product, the operators
must strictly follow the related industrial safety specifications and the
precautions and special safety guide provided in this manual to perform
operations properly.

1 Interface description

1.1 Interface introduction

Cover plates are provided for the extension cable interfaces and user
terminals of the IVC-EH-4DA module, as shown in Figure 1-1. You can see
the extension cable interfaces and user terminals after opening the cover
plates, as shown in Figure 1-2.
Figure 1-1 Module appearance
diagram
The IVC-EH-4DA module is connected to the main module through a patch
board, and the extension modules are connected in cascade mode to
implement hard connection. For the specific connection method, see the
connection diagram in Figure 1-3.
Table 1-1 describes the definition of IVC-EH-4DA user
terminals.
Table 1-1 Definition of IVC-EH-4DA user terminals
Label
24V+ Positive pole of the 24 V analog power supply
24V– Negative pole of the 24 V analog power supply
PG
Voltage signal output terminals for channels 1,
V1+, V2+, V3+, V4+
Current signal output terminals for channels 1,
I1+, I2+, I3+, I4+
Common ground terminals for channels 1, 2, 3,
VI1–, VI2–, VI3–, VI4–
·

1.2 System connection

IVC-EH-4DA is applied to IVC3 series PLC systems. It can be connected to
an IVC3 series system through hard connection, that is, inserting it into the
extension interface of any extension module of the main module or system,
as shown in Figure 1-3.
After the IVC-EH-4DA module is connected to the system, its extension
Figure 1-2 Module interface
diagram
Description
Ground terminal
2, 3, and 4
2, 3, and 4
and 4
Empty pin
interface can also be used to connect another extension module of the IVC3
series, such as the I/O extension module, VC-EH-4AD, IVC-EH-4TC, or
another IVC-EH-4DA.
The main module of an IVC3 series PLC can be extended with multiple I/O
extension modules and special function modules. The number of extension
modules depends on the power that the module can supply. For details, see
section 4.7 "Power supply specifications" in the IVC3 Series PLC User
Manual.
Figure 1-3 Diagram of the connection between IVC-EH-4DA analog modules
and the main module

1.3 Wiring description

Figure 1-4 shows the user terminal wiring requirements. Pay attention to the
following seven aspects:
It is recommended that you connect the analog output by
1.
using a shielded twisted-pair cable, and keep the cable away
from power cables or other cables that may cause electrical
interference.
2. Adopt the single-point grounding mode at the load end of the output
cable.
3. If electrical noise or voltage fluctuation occurs in the output, it is
recommended that you configure a smoothing capacitor (0.1μF to
0.47μF/25V).
4. Do not short-circuit the voltage output or connect the current load to the
voltage output terminal. Otherwise, IVC-EH-4DA may be damaged.
5. Ground the ground terminal PG of the module properly.
6. The auxiliary 24 V DC output power supply or any other power supply
that meets requirements can be used as the analog power supply.
7. Do not use the empty pin of the user terminal.
Figure 1-4 IVC-EH-4DA user terminal wiring diagram