Switching Times; Reaction To Test Pulses; Auxiliary Supply +24 V Logic Out - Festo EMCA-EC-67 Serie Traducción Del Manual Original

EMCA-EC-67-...
2.3.2

Switching times

The amount of energy stored in the components of the STO function (e.g. capacitors) depends on the input
voltage level. These amounts of energy must be charged or discharged depending on the switching opera­
tion. Depending on the input voltage, this results in different values for the transition to the safe status (STO)
and the tolerance time (buffer time) regarding OSSD signals.
1)
Signal
STO 1/STO 2
NC
1) Other electrical data è Chapter 4.2.
Tab. 5 Switching times
2.3.3

Reaction to test pulses

Short test pulses from a safety control are tolerated and thus do not trigger the STO function. The per­
missible pulse width is dependent on the control voltage level at inputs STO 1 and STO 2.
Control ports STO 1/STO 2 [X6]
Maximum permissible pulse width
for 0 V test pulse with 24 V signal
for 24 V test pulse with 0 V signal
Min. time between test pulses
for 0 V test pulse with 24 V signal
for 24 V test pulse with 0 V signal
1) Other electrical data è Chapter 4.2.
Tab. 6 Test pulses of inputs STO 1 and STO 2
2.3.4

Auxiliary supply +24 V LOGIC OUT

A 24 V auxiliary supply is available at [X6.3]. Reference potential (0 V) is pin 2 at voltage supply connection
[X4] (internally bridged with [X6.6]).
The auxiliary supply can be optionally used to power external, active sensors.
Other electrical data è Chapter 4.2.
Festo – EMCA-EC-67-... – 1603 English
1)
Switching time
Activate STO
Deactivate STO
Close acknowledgment contact
Open acknowledgment contact
1)
 5
[ms]
 4
[ms]
 10
[ms]
 60
[ms]
[ms] 0.6
[ms] 10
[ms] 60
[ms] 4
33