5.5.3- Protection of receiver board and relays
Protection of power supplies
- AC versions :
• Against overcurrents : 1 fuse on phase.
• Non-reversible thermal protection of transformer (in the event of overloads at
secondary).
- DC version :
• Against overcurrents : 1 fuse on +V.
• Against polarity inversions : 1 diode on +V.
Fuse characteristics
F1
F2
Receiver supplied with 12 VDC*
Receiver supplied with 24 VDC*
Receiver supplied with 24 VAC*
Receiver supplied with 48 VAC*
Receiver supplied with 115 VAC*
Receiver supplied with 230 VAC*
"Control" relays
* = Power supply according with UDR receiver model (see receiver reference)
UD - 319472K
Element
Safety relays
"Horn" relay
Fuse characteristics (5x20)
1 A / 250 VAC / T
1 A / 250 VAC / T
1,6 A / 250 VAC / T
800 mA / 250 VAC / T
315 mA / 250 VAC / T
160 mA / 250 VAC / T
No protection
No protection
No protection
Loaction of fuse to
be used
F2
F1
F2
F1
F2
F1
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DE
EN
FR
- 101 -