Samson 3969, Mounting And Operating Instructions

Page: 19 / 48

EB 3969 EN 19
Design and principle of operation
Electric data
Nominal signal U
N
14 to 24 V DC 2)
Switching
point
ON U
80 °C
≥14.1 V
I ≥6.1 mA
P
20 °C
≥71.6 mW
OFF I ≤0.5 mA
Input impedance R
20 °C
1.87 kΩ
Temperature influence 0.39 %/°C
Type of protection 3) Intrinsic safety: II 2G Ex ia IIC T4/T6 Gb
II 2D Ex ia IIIC T85 °C Db
Non-sparking: II 3 G Ex ec IIC T4/T6 Gc or II 3 G nA IIC T4/T6 Gc
II 2 D Ex tb IIIC T85°C Db
Output voltage 4) U
i
(V) 28
Output current 4) I
i
(mA) 115
Power dissipation 4)
P
i
(W) 1
Outer capacitance
4)
C
i
(nF) Negligibly small
Outer inductance 4) L
i
(mH) Negligibly small
Ambient temperature 1) –45 to +80 °C (temperature class T4)
Electrical connection Screw terminal, 2-pole, with cable gland M20x1.5
Grounding terminal External (A
max
= 4 mm²)
1)
The maximum permissible ambient temperature depends on the permissible ambient temperature of the compo-
nents, type of protection and temperature class.
2)
Maximum permissible value at 100 % duty cycle. The maximum permissible value U
i
applies to explosion-protected
versions.
3)
According to EU type examination certificate and statement of conformity
4)
Permissible maximum values when connected to a certified intrinsically safe circuit.