For a detailed description of the mounting, disassembly and connection of the module, please refer to the ⮫ installation instructions.
The connection is carried out by using a removable 11-pin terminal block. These terminal blocks differ in their connection system (spring terminals or screw terminals, cable mounting from the front or from the side). The terminal blocks are not included in the module's scope of delivery and must be ordered separately.
1
I/O bus interface and MCU core circuit
2
ADC and logic circuit
3
Analog inputs circuit
4
Functional earth connection
5
Fly-back DC/DC power supply
The assignment of the terminals:
|
Terminal |
Signal |
Description |
|---|---|---|
|
10 |
O0+ |
Current source of channel 0 |
|
11 |
I0+ |
Sense input of channel 0 |
|
12 |
I0- |
Return input of channel 0 |
|
13 |
O1+ |
Current source of channel 1 |
|
14 |
I1+ |
Sense input of channel 1 |
|
15 |
I1- |
Return input of channel 1 |
|
16 |
--- |
Reserved |
|
17 |
SG |
Shield grounding |
|
18 |
SG |
Shield grounding |
|
19 |
UP |
Process voltage UP (24 V DC) |
|
20 |
ZP |
Process voltage ZP (0 V DC) |
The internal power supply voltage for the module's circuitry is carried out via the I/O bus (provided by a communication interface module or a CPU). Thus, the current consumption from 24 V DC power supply at the terminals L+/UP and M/ZP of the CPU/communication interface module increases by 5 mA per AI562.
The external power supply connection is carried out via the UP (+24 V DC) and the ZP (0 V DC) terminals.
NOTICE
Risk of imprecise and faulty measurements!
Analog signals may be severely distorted due to external electromagnetic interference.
When the length of the connection cable exceeds 20 m, a shielded and grounded cable must be used. When the shield is grounded at both ends, an independent low-impedance equipotential connection should be provided to avoid high potential differences between interconnected devices.
NOTICE
Risk of damaging the PLC modules!
The PLC modules must not be removed while the plant is connected to a power supply.
Make sure that all voltage sources (supply and process voltage) are switched off before you do the following:
-
Connect or disconnect any signal or terminal block.
-
Remove or replace a module.
NOTICE
Risk of damaging the PLC modules!
Overvoltages and short circuits might damage the PLC modules.
-
Make sure that all voltage sources (supply voltage and process supply voltage) are switched off before you begin with operations on the system.
-
Never connect any voltages or signals to reserved terminals (marked with ---). Reserved terminals may carry internal voltages.
The module provides several diagnosis functions⮫ “Diagnosis”.
 |
 |
|
2-wire input |
3-wire input |
With 2-wire connection, the resistance of the connection wires influences the accuracy of the measured value. Use 3-wire connection to achieve the guaranteed measuring accuracy.
The meaning of the LEDs is described in the Displays section⮫ “State LEDs”.