Flowserve NRS 2-4 - Manual (Page 7)

7
Technical Data
Supply voltage
24 V DC
Power consumption
2 VA
Output – Measuring circuit
12 V DC (supply voltage going to level electrode)
30 mA
Input – Measuring circuit
1 – 10 V DC (measuring voltage coming from level electrode)
Output – Control circuit
2 volt-free relay contacts
Max. contact rating with switching voltages of 24 / 115 / 230 V AC: 4 A resistive,
0.75 A inductive at cos
ϕ
0.5.
Max. contact rating with switching voltage 24 V DC: 4 A
Service life of relay: 30 x 10
6 switching cycles
2 optocouples (npn), short-circuit protected due to inherent current limiting
characteristics
Max. ratings: 70 V, 10 mA
Indicators and adjustors
1 green LED
OPERATION
, 1 red LED
HIGH LEVEL
, 1 yellow LED
DEFECTIVE ELECTRODE
, 1
yellow LED
MALFUNCTION IN CABLE
Protection
IP 10 to DIN 40050
Max. admissible ambient temperature
0 °C to + 70 °C
Case
19" slide-in unit with front panel to DIN 41494 part 5 and rear 32 way Euro card
connector to DIN 41612 for installation into 19" magazine
Front panel: aluminium
Weight
Approx. 0.6 kg