GESTRA NRR 2-60, Original Installation & Operating Manual

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12 NRR 2-60 - Installation & Operating Manual -
819693-00
Technical data
Supply voltage
■ ■
24 V DC +/-20 %
Power consumption
■ ■
max. 5 VA
Current input
■ ■
max. 0.3 A
Required external fuse
■ ■
0.5 A M
Input/output
■ ■
Interface for CAN bus to ISO 11898, CANopen, insulated
Inputs NRR 2-60
■ ■
1 x analogue input for potentiometer 0 - 1000
W
, two-wire connection (indication of valve position)
■ ■
1 x analogue input IN 2, 4 - 20 mA (feedwater quantity) - (option)
■ ■
1 x analogue input IN 3, 4 - 20 mA (steam quantity) - (option)
Outputs of MIN/MAX contacts
■ ■
2 x potential-free changeover contacts (changeover relays), contact material AgNi0.15, AgSnO2
■ ■
Maximum switching current - 8 A at 250 V AC / 30 V DC - cos
ϕ
= 1
■ ■
Inductive loads must have interference suppression (RC combination) as per the manufacturer's
specification
Off delay of MIN/MAX output relays
■ ■
Factory default setting 3 seconds.
Outputs of control valve OPEN/CLOSED
■ ■
2 x potential-free changeover contacts (changeover relays), contact material AgNi0.15, AgSnO2
■ ■
Maximum switching current - 8 A at 250 V AC / 30 V DC - cos ϕ = 1
■ ■
Inductive loads must have interference suppression (RC combination) as per the manufacturer's
specification
Analogue output
■ ■
1 x actual value output 4 - 20 mA, e.g. for an actual value display
■ ■
Max. load resistance 500
W