KROHNE SU 501 EX EN - Manual (Page 32)

Transistor output
Number, function
1 output, synchronously switching with the
relay
Galvanic separation floating
Max. values
- U
B
max. 36 V DC
- I
B
max. 60 mA (short-circuit proof)
Transistor voltage loss U
CE
min. -1.5 V at I
B
60 mA
Blocking current <10 µA
Adjustment elements
DIL switch block
for preadjustment of the integration time and
mode
Test key for function test
Control lamps in the front plate
- status indication operating voltage
LED green
- Status indication fault signal LED red
- Status indication switching point
control
LED yellow
Ambient conditions
Ambient temperature
-20 … +60°C (-4 … +140°F), with an operating
voltage of 60 … 72 V DC the permissible
ambient temperature reduces linear from
+60°C (+140°F) to +40°C (+104°F)
Storage and transport temperature -40 … +70°C (-40 … +158°F)
Electrical protective measures
Protection
- Signal conditioning instrument
IP 30
- Socket IP 20
Overvoltage category II
Protection class II
Electrical separating measures reliable separation (VDE 0106, part 1) between
power supply, meas. data input, level relay and
transistor output
Approvals 3)
ATEX ATEX II (1) GD [EEx ia] IIC
Others WHG
3) Deviating data with Ex applications: see separate safety instructions.
32 SU 501 Ex - Signal conditioning instrument
Supplement
27953
-EN
-050616