
9
Function
Explanatory Notes – continued –
System description – continued –
The URB 1 communicates with other GESTRA system components via a designated
CAN bus using the CANopen protocol to DIN ISO 11898.
The URB 1 can also be used to operate and display further system components
during operation.
■ Capacitance level switch type NRS 2-40 CANopen
■ Level controller type NRR 2-40 CANopen
■ Conductivity level switch type NRS 1-42 CANopen
■ Low-level alarm to TRD 604/EN type NRS 1-40 CANopen
■
High-level alarm to TRD 604/EN type NRS 1-41 CANopen
■
Conductivity controller and limiter to TRD 604/EN type NRS 1-41 CANopen
Standard display information
Level Conductivity
NRS 1-40 NRS 1-41 NRS 1-42
NRS 2-40 NRR 2-40
LRR 1-40
Actual value (bar chart) ●● ●
Actual value (numerical value) ●● ●
Switchpoint (symbol) ●●● ●
High level alarm (electrode HW) ●●● ●
Low level alarm (electrode LW) ●●● ●
Manual/automatic operation ●● ●
Stand-by mode ●
Unit [µS/cm] or [ppm] ●
Low level limit ●
High level limit ●
Alarm (warning triangle) ●●
Further display information
Level Conductivity
NRS 1-40 NRS 1-41 NRS 1-42
NRS 2-40 NRR 2-40
LRR 1-40
Actual value (continuous) ●● ●
Switchpoints ●●● ●
Setpoint ●●
Deviation ●●
Valve position ●●
Intermittent blowdown ●
Intermittent blowdown interval ●
Purging pulse 24 h ●
Current CAN bus addresses ●●●●● ●
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