155
2121331-04-04/19 (Translation of the original operating instructions)
Operating Instructions
Modular Safety Control System MSC
EN
WARNING
The RESET command switches must be installed outside the danger zones for the network in places
at which there is a clear view of the entire work areas affected.
NOTICE
Ì
A maximum of 10 base units can be connected in the network configuration.
Ì
A maximum of 9 extension modules can be connected to each base unit.
Condition 1:
During switch on, see Figure 188:
The OUTPUTS on the various nodes are in the state "0" (FALSE).
2. The STOP signal is sent via the
Network_OUT
cable.
3. If the RESET command switch on a node is actuated, all existing nodes are started when the START signal is sent.
4. As the final result, the OUTPUT on all nodes connected has the state "1" (TRUE) if the various inputs (IN) have the state
"1" (TRUE).
5. The RUN signal is transmitted via the network to the four nodes.
Condition 2:
If the emergency stop button is pressed on one of the four nodes, see Figure 188:
The OUTPUT changes to the state "0" (FALSE).
2. The STOP signal is sent via the Network_OUT cable.
3. The next node receives the STOP code and deactivates the output.
4. The STOP command generates the STOP code for all lines of type Network_IN and Network_OUT.
5. As the final result
the OUTPUT on all nodes connected is in the state
"0" (FALSE).
6. If the emergency stop is switched back to the normal position, all nodes can be restarted with a single reset by trans-
mitting the START signal again. The latter condition does not occur if ENABLE RESET NETWORK is not selected. In this
event the local reset method must be used.
The system needs approx. 4 seconds to restore all outputs on the
blocks that form the network.
Important!
Undertake a local reset of the module that caused the loss of the power supply to restore the safety
output.
Response time: The maximum response time of the network starting with the triggering of the emergency stop is determined
using the following formula:
t
r
=
212 ms
*
n
°
Master
(
)
– 260 ms
¨
The maximum number of base units connected must not be more than 10.
Example of a network with 4 nodes:
Actuation of emergen-
cy stop
MASTER 1
MASTER 2
MASTER 3
MASTER 4
t
r MASTER 1
t
r MASTER 2
t
r MASTER 3
t
r MASTER 4
12.6 ms
164 ms
376 ms
488 ms
Table 75: Response time of a network with 4 nodes
Summary of Contents for MSC
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