Burkert 8311 Manuel D'installation page 11

Protection against
voltage peaks
Protection against
polarity reversal
Transistor outputs
4-20 mA output
Max. line impedance
8311
yes, for the power supply and the transistor outputs
yes, for the power supply and all the outputs
2 PNP or 2 NPN, can be modified by means of straps, open collector, max. 700 mA,
NPN output: V+ minus 0.5 VDC / 0 VDC and PNP output: 0.5 VDC / V+
possible adjustment of the 4 mA between 3,5 and 4,5 mA;
possible adjustment of the 20 mA between 19 and 21 mA
Response time (10% - 90%): 300 ms with filter 0 (default setting)
R , depends on the supply voltage (V+), the loads (R
load
I and I currents
1 2
V+ - 10 - R (I
L
R =
load
0,022
+ I )
8311
1 2
0,022 A
11
) on the 2 transistor outputs and
L
R
L
I
1
I
2
R
L
V+
R
load