EUCHNER CES-A-BDN-C06 Series, Руководство по эксплуатации, Страница: 14 / 28

Operating Instructions
Non-Contact Safety Switch CES-I-BP-.-C07-…
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(Translation of the original operating instructions) 2528734-01-07/19
8.8. Connection to a BR evaluation unit
Important!
Ì The example shows only an excerpt that is relevant for connection of the CES system. The exam-
ple illustrated here does not show complete system planning. The user is responsible for safe inte-
gration into the overall system. Detailed application examples can be found at www.euchner.com.
Simply enter the order number of your switch in the search box. You will find all available connec-
tion examples for the device in Downloads.
To poll the communication data from the connected switch, diagnostic output OD/C is routed to the BR evaluation unit.
On the use of the BR evaluation unit ESM-CB, the following applies:
The safety outputs for the switch are routed to the corresponding inputs on the BR evaluation unit ESM-CB. If a safety door
is opened or if a fault occurs on the switch, the BR evaluation unit ESM-CB shuts down the machine.
8.8.1. Overview of the communication data
The switch transmits both process data that are continuously transmitted to the evaluation unit (cyclical data) and data that
can be polled specifically as needed (acyclical data). For further information on connection and on the communication data,
please refer to the operating instructions for your BR evaluation unit.
8.8.2. Cyclical data (process data)
Table 2: Cyclical data (process data)
Data Meaning
Guard position OD This signal indicates whether the guard is open or closed.
Weak-range indication
OW
This signal provides timely information about whether an actuator is in the limit range of the transponder field. This situation
usually occurs when safety doors settle over time, causing the actuator to drift out of the operating distance. The weak-
range indication signals this state early enough for you to readjust the safety door.
Safety outputs switched
OM
This signal indicates whether the safety outputs are switched on. The guard must be closed and all other conditions must
be met for this purpose. The safety outputs of all preceding devices in the series connection are switched on, for example.
Message pending OI This signal indicates a pending message. You can retrieve it via the acyclical data.
State of the device preceding the
switch
OR Indicates whether the preceding switch in the series connection has switched on the safety outputs.
8.9. Notes on operation with safe control systems
Please observe the following requirements for connection to safe control systems:
Ì Use a common power supply for the control system and the connected safety switches.
Ì The device tolerates voltage interruptions at UB up to 5 ms in duration, provided that the time between two voltage
interruptions is at least 500 ms. Tap the supply voltage directly from the power supply unit. If the supply voltage is con-
nected to a terminal of a safe control system, this output must provide sufficient electrical current.
Ì The safety outputs (FO1A and FO1B) can be connected to the safe inputs of a control system. Prerequisite: the input
must be suitable for pulsed safety signals (OSSD signals, e.g. from light grids). The control system must tolerate test
pulses on the input signals. This normally can be set up by parameter assignment in the control system. Observe the
notes of the control system manufacturer. For the test-pulse duration of your safety switch, please refer to chapter 11.
Technical data on page 18.
A detailed example of connection and setting the parameters of the control system is available for many devices at
www.euchner.com in the area Download » Applications » CES. The features of the respective device are dealt with there in
greater detail.