EUCHNER CES-FD-AP-U-01-xxx (Unicode) - Manual (Page 10)

Operating Instructions Field Evaluation Unit CES-FD-AP-.-01-…
10
Fuse protection for power supply
The power supply must be provided with fuse protection depending on the current
required for the outputs. The following rules apply:
Max. current consumption of a switch I
max
I
max
= I
UB
+ I
OD
+ I
FO1A+FO1B
I
UB
= Switch operating current (45 mA)
I
OD
= Monitoring output load current (max. 50 mA)
I
FO1A+FO1B
= Load current safety outputs FO1A + FO1B (2 x max. 150 mA)
Requirements for connection cables
Caution!
Risk of damage to equipment or malfunctions as a result of incorrect connec-
tion cables.
Ì Use connection components and connection cables from EUCHNER
Ì On the usage of other connection components, the requirements in the fol-
lowing table apply. EUCHNER provides no warranty for safe function in case
of failure to comply with these requirements.
Ì The connection cable for the field evaluation unit must not be longer than
180 m in total.
Ì The connection cable from the field evaluation unit to the read head is only
allowed to be extended with the aid of the extension (order no. 115464).
Ì The read head cable must not be longer than 0.7 m in total.
Observe the following requirements with respect to the connection cables for the
connection of the device:
Parameter Value Unit
Conductor cross-section min. 0.14 mm²
R max. 150 W /km
C max. 120 nF/km
L max. 0.65 mH/km
Recommended cable type LIYY 8x or 5x0.14 mm²