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System Startup
4.2
Working with Input/Output Modules
A distinction is made between the following two module types according to the type of process
signals they handle:
•
Digital modules
•
Analog modules.
Please observe the rules laid down in Chapter 10 for feedback modules and their configuration.
Important
!
Turn off the power supply for the central controller and the sensors before plugging in
or removing input/output modules.
Suitable digital modules are available for various signal levels. The wiring of the power supply,
sensors, and actuators is printed on the front doors of the modules.
LEDs on the frontplate indicate the signal states of inputs and outputs. The LEDs are assigned to
the front connector terminals.
4.3
System Startup Procedure
This section contains information on how to configure a system incorporating programmable con-
trollers and how to put such a system into operation.
4.3.1
Safety Measures
When configuring systems incorporating programmable controllers, follow the relevant VDE reg-
ulations (e.g. VDE 0100 or VDE 0160). Pay special attention to the following points:
•
The 24 V DC supply must be safely isolated from the power system voltage (e.g. 220 V AC).
•
Prevent conditions that might endanger persons or property.
•
When switching the S5-115F on for the first time, the user must make sure that the discon-
nection facilities are in order.
•
When power is restored after a power failure or after EMERGENCY OFF devices have been
tripped, machines must not be able to restart automatically.
•
When EMERGENCY OFF devices are activated, safety must be guaranteed for persons and
equipment as follows:
- Actuators and drives that could cause dangerous situations (e.g. main spindle drives for
machine tools) must be shut off.
- On the other hand, actuators and drives that could endanger persons by being shut off
(e.g. clamping devices), must not be shut off by EMERGENCY OFF devices.
•
The programmable controller must be able to record the activation of EMERGENCY OFF
equipment and the control program must be able to evaluate this information.
4-18
S5-115F Manual
EWA 4NEB 811 6148-02
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