EUCHNER ESL-IH-AR - Manual (Page 20)

Operating Instructions ESL
20
Typical 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.
Risk time according to EN 60947-5-3: If a handle module moves outside the
operating distance, the safety outputs FO1A and FO1B on the corresponding inter-
locking module are deactivated after a maximum of 260 ms. If more than one device
is used, the value increases correspondingly (see System times for switch chains).
Difference time: The safety outputs FO1A and FO1B switch with a slight delay
in relation to each other. They have the same signal state at the latest after a
difference time of 10 ms.
System times for a single device
t
0
t
0
t
0
=
=
+ 260 ms t
off
t
0
+ 150 ms t
off
t
off
t
0
= + 300 ms t
off
Short circuit or cross circuit
at FO1A/FO1B
or internal fault
Missing signal FI1A/FI1B
Pulling on handle module
Non-identical input state
at FI1A/FI1B
t (ms)
= Safety outputs active
= Switch-off time
= Fault time/event
Figure 6: System times for single device
System times for switch chains
Important!
The system times shown are maximum values for a circuit arrangement with
20 safety switches connected in series. Shorter times can also be achieved in
circuits with fewer switches.
t
0
t
0
t
0
=
=
+ 360 ms t
off
t
0
+ 250 ms t
off
t
off
t
0
= + 400 ms t
off
Short circuit or cross circuit
at FO1A/FO1B
or internal fault
Missing signal FI1A/FI1B
Pulling on handle module
Non-identical input state
at FI1A/FI1B
t (ms)
= Safety outputs active
= Switch-off time
= Fault time/event
Figure 7: System times for switch chains