Devices that are already configured and are to be connected in a cascade must be
r
eset to the factory settings.
Each device detects the number of devices in the cascade when it is switched on.
During configuration, the device stores this information in the configuration memory.
The information stored about the cascade is used to identify inadvertent or intentional
changes that could lead to a danger:
•
If fewer devices are detected in the cascade when it is switched on than were
stored in the configuration, every device in the cascade switches to the locking
state
•
If more devices are detected in the cascade when it is switched on than were
stored in the configuration, every device in the cascade updates its configuration
memory to the new value
Further topics
•
"C
onnecting preconfigured devices in an existing cascade", page 100
7.13.1 Cascading new devices
Approach
1.
Install and wire the devices.
2. Set the DIP switches for the beam coding on the receiver of the host system.
3. Switch on the voltage supply.
✓
The devices are in configuration mode, the field indicator flashes green.
4. Wait until all receivers indicate the correct cascade configuration. In a cascade,
diagnostic LED 2 flashes.
5. Wait approx. 3 s longer.
6. Receiver: to configure the restart interlock, press the reset pushbutton for
between 1 and 3 s, then release it. Diagnostic LED 4 flashes.
7. Disconnect the devices from the voltage supply.
✓
The cascade can now be put into operation.
Further topics
•
"C
onfiguring beam coding", page 88
7.13.2 Connecting a new device in an existing cascade
Overview
If y
ou use an unconfigured device to extend a cascade or to replace a (defective) device
in a cascade, the unconfigured device adopts the configuration for the restart interlock
and external device monitoring from the existing devices.
Approach
1.
Install and wire the device.
2. Set the DIP switches for the beam coding on the receiver of the host system.
3. Switch on the voltage supply.
✓
The device is in configuration mode, the field indicator flashes green.
4. If the restart interlock or external device monitoring was configured for at least one
existing device, the configuration is adopted.
5. Wait until all receivers indicate the correct cascade configuration. In a cascade,
diagnostic LED 2 flashes.
6. Wait approx. 3 s longer.
7. Disconnect the device from the voltage supply.
✓
The device can now be put into operation.
CONFIGURATION 7
8023872/18YZ/2021-01-14 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex II 3GD
99
Subject to change without notice
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