C-DIAS SAFETY CPU
CSCP 012
1.6
Page 33
Implementation
•
For switch S1, the start button and S2, the Emergency Stop switch, 2 safe in-
puts are required for each.
•
Two safe outputs are needed for control of the relay K1 and the signal lamp P1.
•
The normally open contacts of the start button S1 are connected to the signal
outputs A and B over 2 channels (cross-circuit detection) and wired to 2 safe
inputs.
•
The normally closed contacts of the Emergency Stop switch S2, are connected
to the signal outputs A and B over 2 channels (cross-circuit detection) and wired
to 2 safe inputs.
•
The monitor contact of the K1 relay switch is otherwise read back.
As the requirements show, the CSCP 012 Safety CPU is best suited for solving the task.
The following block diagram shows the implementation of the circuit with help from a single
CSCP 012 Safety CPU and the stated external components. Here, it is assumed that the
Safety module is mounted on a correctly installed C-DIAS module carrier.
