EUCHNER LCA 2 Series, Operating Instructions Manual

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73
2504708-03-02/21 (translation of the original operating instructions)
Operating Instructions
Light Grids/Light Curtains LCA 2
EN
9. Operating modes/setup
9.1. Configuration and operating modes (with integrated control functions)
The operating mode is dependent on the results of the risk analysis. Based on the degree of protection required, the system
can be configured for automatic or manual operation.
The function of the device can be defined by controlling the pins. The following table shows how these can be controlled.
Table 10: Manual/automatic operating mode
Connections Operating mode
K1_K2/RESTART (PIN 4) SEL_A (PIN 5) SEL_B (PIN 6)
Connection to: 24 V DC Connection to: 24 V DC Connection to: 0 V DC
AUTOMATIC
(Figure 18)
Connection to: 24 V DC
(via series normally closed contacts on
K1K2)
Connection to: 24 V DC Connection to: 0 V DC
AUTOMATIC
with K1K2 control
(Figure 18)
Connection to: 24 V DC
(via RESTART button)
Connection to: 0 V DC Connection to: 24 V DC
MANUAL
(Figure 19)
Connection to: 24 V DC
(via RESTART button and
series normally closed contacts on
K1K2)
Connection to: 0 V DC Connection to: 24 V DC
MANUAL
with K1K2 control
(Figure 19)
9.1.1. Manual operating mode
The safety outputs FO1A and FO1B react to the status of the device. If the light beams are interrupted, the safety outputs
shut down. The machine movement is stopped.
Once the protected area has been cleared, restarting must be initiated manually. The restarting of the machine must be
confirmed manually using a pushbutton or a command on the input K1/K2 Restart.
DANGER
Severe injuries or death due to the machine restarting.
Ì The safeguard shuts down the machine if interrupted.
In this state, the danger zone can be entered undetected
(use as trip device as per EN 61496).

Before manual reactivation, make sure that there are no persons in the danger zone.
9.1.2. Automatic operating mode
Important!
This operating mode is allowed to be used only in special cases.
Ì The safety outputs FO1A and FO1B react to the status of the device. If the light beams are inter-
rupted, the safety outputs shut down. The machine movement is stopped.
Ì Once the protected area is cleared, the safety outputs are activated automatically and normal op-
eration established (after 2 seconds). The machine starts automatically.
DANGER
Severe injuries or death due to the machine restarting.
Ì If the protected area is interrupted, the safety outputs shut down. Once the protected area is
cleared, the safety outputs are activated. The machine is restarted automatically.

Make sure that the automatic operating mode matches the safety level required by the risk analysis
and is allowed to be used.