Electrical Connection¶
The digital/analog input/output module DA502 can be connected to the following devices via the I/O bus connector:
- CS31 bus modules, e. g. DC551-CS31, CI590 and CI592
- AC500 CPUs (PM5xx)
- other AC500 I/O devices
Note
The DA502 must not be used as a decentralized communication interface module at DC505-FBP.
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 TU515/TU516 TU515, TU516, TU516-H and TU542 for I/O Modules.
The assignment of the terminals:
| Terminal | Signal | Description |
|---|---|---|
| 1.0 | DO0 | Signal of the digital output DO0 |
| 1.1 | DO1 | Signal of the digital output DO1 |
| 1.2 | DO2 | Signal of the digital output DO2 |
| 1.3 | DO3 | Signal of the digital output DO3 |
| 1.4 | DO4 | Signal of the digital output DO4 |
| 1.5 | DO5 | Signal of the digital output DO5 |
| 1.6 | DO6 | Signal of the digital output DO6 |
| 1.7 | DO7 | Signal of the digital output DO7 |
| 1.8 | UP | Process voltage UP (24 VDC) |
| 1.9 | ZP | Process voltage ZP (0 VDC) |
| 2.0 | DO8 | Signal of the digital output DO8 |
| 2.1 | DO9 | Signal of the digital output DO9 |
| 2.2 | DO10 | Signal of the digital output DO10 |
| 2.3 | DO11 | Signal of the digital output DO11 |
| 2.4 | DO12 | Signal of the digital output DO12 |
| 2.5 | DO13 | Signal of the digital output DO13 |
| 2.6 | DO14 | Signal of the digital output DO14 |
| 2.7 | DO15 | Signal of the digital output DO15 |
| 2.8 | UP | Process voltage UP (24 VDC) |
| 2.9 | ZP | Process voltage ZP (0 VDC) |
| 3.0 | AI0+ | Positive pole of analog input signal 0 |
| 3.1 | AI1+ | Positive pole of analog input signal 1 |
| 3.2 | AI2+ | Positive pole of analog input signal 2 |
| 3.3 | AI3+ | Positive pole of analog input signal 3 |
| 3.4 | AI- | Negative pole of analog input signals 0 to 3 |
| 3.5 | AO0+ | Positive pole of analog output signal 0 |
| 3.6 | AO1+ | Positive pole of analog output signal 1 |
| 3.7 | AO- | Negative 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 | DC16 | Signal of the configurable digital input/output DC16 |
| 4.1 | DC17 | Signal of the configurable digital input/output DC17 |
| 4.2 | DC18 | Signal of the configurable digital input/output DC18 |
| 4.3 | DC19 | Signal of the configurable digital input/output DC19 |
| 4.4 | DC20 | Signal of the configurable digital input/output DC20 |
| 4.5 | DC21 | Signal of the configurable digital input/output DC21 |
| 4.6 | DC22 | Signal of the configurable digital input/output DC22 |
| 4.7 | DC23 | Signal of the configurable digital input/output DC23 |
| 4.8 | UP | Process voltage UP (24 VDC) |
| 4.9 | ZP | Process voltage ZP (0 VDC) |
The internal power supply voltage for the module’s circuitry is carried out via the I/O bus (provided by a bus module or a CPU). Thus, the current consumption from 24 VDC power supply at the terminals L+/UP and M/ZP of the CPU/Bus Module increases by 2 mA per DA502.
The external power supply connection is carried out via the UP (+24 VDC) and the ZP (0 VDC) terminals.
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 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
- connect or disconnect any signal or terminal block
- remove or replace a module.
Caution
: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 equalization of a low resistance to avoid high potential differences between different parts of the plant.
Terminal assignment of the module
The module provides several diagnosis functions DA502 - Digital/Analog Input/Output Module.
- Connection of the digital outputs
- 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)