Sew Eurodrive X e Serie Notice De Montage Et D'exploitation page 248

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Note on F���-xN:
The +24 V DC signal voltage required for the reset inputs is not available to
the F���-xN� This must be taken from an external voltage source� The reference
point (GND) of the external power supply must be connected to terminal 1 of the
monitor; otherwise no switching operation is possible�
6.3.3 Typical input circuit F...-x
+ sensor supply
- sensor supply
6.4 Outputs
6.4.1 Relay outputs (Out1, 2)
► To prevent excessive wear and to comply with the EMC standards, interference
suppression of the contacts is required for switching inductive loads�
If the device is operated on an AC supply (terminals 7/8) this must use the same
supply cable as the voltage supply to switch an AC voltage via the relay outputs�
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248
Notice de montage et d'exploitation – Entraînements pour élévateurs à godets – Série X..e
A +24 V DC continuous signal leads to a permanent bridging of the
monitoring, i�e� the same state as during the start-up delay is indicated�
When the voltage is no longer applied and the set start-up delay has
elapsed, monitoring starts�
70E
ϑ
270E
npn
270E
pnp
WARNING
If the relay outputs are used for switching very small currents (e�g� PLC
inputs), considerable contact resistance can arise� In this case use the
transistor outputs�
47n
2K2
4K7
1n0
10K
1n0 2K2
U BB (24 V)
10K
4K7 10n0
4n7