58
107004-15 EN FR26 ROW 0899 Printed in France
FUSES PROTECTION
The EM1 and EM2 inputs must be protected by an external 0.5A fuse connected on
terminal 1 (+24 V POWER).
DETECTED FAILURES
The following failures are detected and prevent a muting sequence from starting : absence
of one or both EMs sensors, permanent short-circuit on one of the EM inputs.
Features
EM1 & EM2 inputs
Type
voltage free and without reference potential
Consumption
10 mA/24 Vdc
Low level
2 mA max.
High level
5 mA min.
Protections
galvanic insulation : 500 Vdc, reversed polarity
Figure 4.10 : Connection of the EMs sensors
The following reversed connection is recommended for a better failure resistance
+24Vdc
0V
FF-SRM
21
(-)
(+)
(-)
(+)
11
0.5A
12
NPN
22
PNP EM1
EM2
+24Vdc
0V
EM1
12
FF-SRM
22
21
(-)
(+)
(-)
(+)
EM2
11
0.5A
Summary of Contents for SYA14 Series
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