KROHNE SU 600, Operating Instructions Manual

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9 Supplement
SU 600 • 4 … 20 mA signal conditioning instrument
30652-EN-150129
Breaking capacity
1)
min. 50 mW, max. 500 VA, max. 54 W DC
Min. switching hysteresis 0.5 %
Current output
Quantity 1 x output
Range 0/4 … 20 mA
Resolution 0.1 %/20 µA
Max. load 500 Ω
Fault message 22 mA
Accuracy ±25 µA (0.125 % of 20 mA)
Temperature error (relating to 20 mA) 0.01 %/K
Indicators
Measured value indication
Ʋ LC display (45 x 45 mm) digital and quasianalogue indication
Ʋ Max. indicating range -9999 … 9999
LED displays
Ʋ Status, operating voltage 1 x LED green
Ʋ Status, fault signal 1 x LED red
Ʋ Status operating relay 1/2 2 x LED yellow
Operation
Adjustment elements 2 x key, 1 x function selection switch
Ambient conditions
Ambient temperature -20 … +60 °C (-4 … +140 °F)
Storage and transport temperature -40 … +80 °C (-40 … +176 °F)
Electrical protective measures
Protection rating
Ʋ Wall, rail mounting IP 20
Ʋ Front panel mounting IP 40
Overvoltage category II
Protection class II
Electrical separating measures
Reliable separation according to VDE 0106 part 1 between power supply, sensor input and digital
component
Ʋ Reference voltage 250 V
Ʋ Voltage resistance of the isolation 3.75 kV
1)
If inductive loads or stronger currents are switched through, the gold plating on the relay contact surface will be
permanently damaged. The contact is then no longer suitable for switching low-level signal circuits.