Electrical Connection¶
The CS31 bus module CI592-CS31 is plugged on the CS31 terminal unit TU551-CS31 or TU552-CS31 TU551-CS31 and TU552-CS31 for CS31 Communication Interface Modules. Hereby, it clicks in with two mechanical locks. The terminal unit is mounted on a DIN rail or with 2 screws plus the additional accessory for wall mounting (TA526 TA526 - Wall Mounting Accessory).
Note
For a detailed description of the mounting, disassembly and electrical connection of the module, please refer to the System Assembly, Construction and Connection chapter AC500 (Standard).
The electrical connection is carried out by using the 40 terminals of the terminal unit TU551-CS31/TU552-CS31. It is possible to replace the CI592-CS31 without loosening the wiring.
The assignment of the terminals:
| Terminal | Signal | Description |
|---|---|---|
| 1.0 | R1 | Integrated termination resistors for CS31-Bus, Terminal 1 |
| 1.1 | R2 | Integrated termination resistors for CS31-Bus, Terminal 2 |
| 1.2 | B1 | CS31-Bus, bus line 1 |
| 1.3 | B2 | CS31-Bus, bus line 2 |
| 1.4 | FE | Functional earth |
| 1.5 | B1 | CS31-Bus, bus line 1 |
| 1.6 | B2 | CS31-Bus, bus line 2 |
| 1.7 | FE | Functional earth |
| 1.8 | UP | Process voltage UP (24 VDC) |
| 1.9 | ZP | Process voltage ZP (0 VDC) |
| 2.0 | DI0 | Signal of the digital input DI0 |
| 2.1 | DI1 | Signal of the digital input DI1 |
| 2.2 | DI2 | Signal of the digital input DI2 |
| 2.3 | DI3 | Signal of the digital input DI3 |
| 2.4 | DI4 | Signal of the digital input DI4 |
| 2.5 | DI5 | Signal of the digital input DI5 |
| 2.6 | DI6 | Signal of the digital input DI6 |
| 2.7 | DI7 | Signal of the digital input DI7 |
| 2.8 | UP | Process voltage UP (24 VDC) |
| 2.9 | ZP | Process voltage ZP (0 VDC) |
| 3.0 | AI0+ | Plus pole of analog input signal 0 |
| 3.1 | AI1+ | Plus pole of analog input signal 1 |
| 3.2 | AI2+ | Plus pole of analog input signal 2 |
| 3.3 | AI3+ | Plus pole of analog input signal 3 |
| 3.4 | AI- | Minus pole of analog input signals 0 to 3 |
| 3.5 | AO0+ | Plus pole of analog output signal 0 |
| 3.6 | AO1+ | Plus pole of analog output signal 1 |
| 3.7 | AO- | Minus pole of analog output signals 0 and 1 |
| 3.8 | UP | Process voltage UP (24 VDC) |
| 3.9 | ZP | Process voltage ZP (0 VDC) |
| 4.0 | C8 | Signal of the configurable digital input/output C8 |
| 4.1 | C9 | Signal of the configurable digital input/output C9 |
| 4.2 | C10 | Signal of the configurable digital input/output C10 |
| 4.3 | C11 | Signal of the configurable digital input/output C11 |
| 4.4 | C12 | Signal of the configurable digital input/output C12 |
| 4.5 | C13 | Signal of the configurable digital input/output C13 |
| 4.6 | C14 | Signal of the configurable digital input/output C14 |
| 4.7 | C15 | Signal of the configurable digital input/output C15 |
| 4.8 | UP | Process voltage UP (24 VDC) |
| 4.9 | ZP | Process voltage ZP (0 VDC) |
Warning
:strong:Removal/Insertion under power
The devices are not designed for removal or insertion under power. Because of unforeseeable consequences, it is not allowed to plug or unplug devices with the power being ON.
Make sure that all voltage sources (supply and process voltage) are switched off before you
- connect or disconnect any signal or terminal block
- remove, mount or replace a module.
Disconnecting any powered devices while energized in a hazardous location could result in an electric arc, which could create a flammable ignition resulting in fire or explosion.
Make sure that power is removed and that the area has been thoroughly checked to ensure that flammable materials are not present prior to proceeding.
The devices must not be opened when in operation. The same applies to the network interfaces.
Attention
:strong:Risk of damaging the PLC modules!
Overvoltages and short circuits might damage the PLC modules.
- Make sure that all voltage sources (supply and process voltage) are switched off before you begin with operations at the system.
- Never connect any voltages or signals to reserved terminals (marked with —). Reserved terminals may carry internal voltages.
Attention
:strong:Risk of imprecise and faulty measurements!
Analog signals may be distorted seriously by external electromagnetic influences.
Use shielded wires when wiring analog signal sources. The cable shield must be grounded at both ends of the cable. Provide a potential equalisation of a low resistance to avoid high potential differences between different parts of the plant.
Terminal assignment of the CS31 bus module CI592-CS31
The module provides several diagnosis functions CI592-CS31 - Digital and Analog Inputs and Outputs.
The measuring ranges are described in the section Measuring Ranges CI592-CS31 - Digital and Analog Inputs and Outputs CI592-CS31 - Digital and Analog Inputs and Outputs:
The meaning of the LEDs is described in the section Status LEDs CI592-CS31 - Digital and Analog Inputs and Outputs.
- Connection of the Digital Inputs
- Connection of the Configurable Digital Inputs/Outputs
- Connection of Resistance Thermometers in 2-wire Configuration to the \ Analog Inputs
- Connection of Resistance Thermometers in 3-wire Configuration to the \ Analog Inputs
- Connection of Active-type Analog Sensors (Voltage) with Electrically \ Isolated Power Supply to the Analog Inputs
- Connection of Active-type Analog Sensors (Current) with Electrically \ Isolated Power Supply to the Analog Inputs
- Connection of Active-type Analog Sensors (Voltage) with no Electrically \ Isolated Power Supply to the Analog Inputs
- Connection of Passive-type Analog Sensors (Current) to the Analog Inputs
- Connection of Active-type Analog Sensors (Voltage) to Differential \ Analog Inputs
- Use of Analog Inputs as Digital Inputs
- Connection of Analog Output Loads (Voltage)
- Connection of Analog Output Loads (Current)