Berthold LB 4700 - Page 122

Safety Manual / Explosion Protection Manual 6 Safety Instructions
56926BA26, Rev. 06, 04/2019
13
Electric parameters for the supply
Terminal 1+, 2–
Supply and signal circuit (FSK)
max. input voltage U
N
15 V
max. input power P
max
5 W
Electrical safety parameters for the associated equipment
Terminal 1+, 2–
Supply and signal circuit (FSK)
Rectangular characteristic curve
Gas group
IIC
max. input voltage U
i
17.64 V
max. input current I
i
81 mA
max. input power P
i
1.4 W
max. internal inductance L
i
2.7 µH
max. internal capacitance C
i
2.42 nF
Signal output (terminal 3, 4)
Thermometer circuit (PT100) linear char-
acteristic curve
max. output voltage U
o
16.8 V
max. output current I
o
33.3 mA
max. output power P
o
139 mW
Maximum concurrently
permissible external values of
jointly acting reactance
(C
i
, L
i
already considered)
IIC
L
o
15 mH
C
o
0.19 µF
IMPORTANT
The above ranges for ambient temperature (T
a
) only apply to free-standing
mounted detectors. If the detector is not free-standing, this can lead to an ad-
ditional increase in surface temperature (e.g. by reflection of heat). In this case,
the ambient temperature (T
a
) must be accordingly reduced in order to make
sure that the maximum surface temperature is not exceeded.
IMPORTANT
See chapter 7 for the “Control Drawing” and details on the explosion protec-
tion concept.