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Rules Governing the Use of the S5-115F
Indirect control readback at load circuit
Note
You must use sufficiently fast interposing relays in the case of indirect control of
actuators via interposing relays and readback after the interposing relays. The delay
between control pulse and the result of the readback function must not exceed
70 msec.
Connection direct at the load circuit of the relay is shown in the following figures.
Subunit A
482 - 7LF21(M DQ)
482-7LF31
458 - 7LB
*
DQ, M output
*
Not connected to
.
common pot
P
M
Figure 10-18. Type 9/10 DQ, Safety-Related: Indirect Control, 24 V / 24 V
10-34
R DI, P Read
482 - 7LF21
(Connected to
common 0 V pot.)
M
P (= 24 V)
with Readback at load circuit
Subunit B
482 - 7LF11(P DQ)
482 - 7LF31
458 - 7LB
*
DQ, P output
*
Not connected
to common pot.
P
S5-115F Manual
R DI, M Read
482 - 7LF11
(Connected to
common P pot.)
M
EWA 4NEB 811 6148-02
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