Honeywell SYA14 Series, Руководство пользователя

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107004-15 EN FR26 ROW 0899 Printed in France 67
DETECTED FAILURES
The following failures are detected and prevent a muting sequence from starting : absence
of one push-button, permanent short-circuit on one of the P/B inputs, connection of a single
push-button on both P/B inputs.
FUSES PROTECTION
The P/B1 and P/B2 inputs must be protected by an external 0.5A fuse connected on
terminal 1 (+24 V POWER).
Features P/B1 & P/B2 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 4.15 : Connection of the override push-buttons
The following reversed connection is recommended for a better failure resistance
+24Vdc
0V
P/B1
16
FF-SRM
17
(-) (+)
(-) (+)
P/B2
15
0.5A
18