User Manual

Operating Instructions Safety Switches CES-AR-C.2-CH
24
Typical system times
The specified times are maximum values for AR switch chains with 20 devices.
Individual devices have shorter system times.
Ready delay: After switching on, the unit carries out a self-test for 8 s. The system
is ready for operation only after this time.
Switch-on time of safety outputs: The max. reaction time from the moment when
the actuator is at the operating distance (safety door closed) to the moment when
the safety outputs switch on T
on
is 300 ms (400 ms for switch chains).
Simultaneity monitoring, safety inputs IA/IB: If the safety inputs have differ-
ent switching states for longer than 150 ms, the safety outputs OA/OB will be
switched off.
Risk time according to EN 60947-5-3: If an actuator moves outside the op-
erating distance, the safety outputs OA and OB are deactivated after a maximum
of 360 ms.
Difference time: The safety outputs OA and OB switch with a slight time offset.
They have the same signal state at the latest after a difference time of 10 ms.
Pulses on the safety outputs: The device generates its own pulse signal on the
output lines OA/OB. A downstream control system must tolerate these pulses,
which may have a length of up to 1 ms.
This can usually be set up in the control systems by parameter assignment. If
parameter assignment is not possible for your control system or if shorter pulses
are required, please contact our support organization.
The pulses are also output when the safety outputs are switched off.