IMP Pumps NMTC module - Manual (Page 13)

13
Priority
Pump control panel &
Ethernet settings
External signals
1
Modbus control
1 Stop (OFF)
2 Night mode active
2
3 Max. RPM (Hi)
4 Min. curve 4
5 Stop (Run not active)
6 Max. curve 4 Stop 3
7 Setpoint setting 4 Setpoint setting
3
8 Setpoint setting
4
Examples:
• Stop on the pump display panel will stop the pump, regardless of external setpoint.
• If External Run input is inactive, the pump cannot be started over Modbus, but can be set to max
RPM on the display panel.
4.2 Control variables
Pump will respond to external controls according to selected pump operating mode. Consult proper
pump operating manual for explanation.
Symbol Regulation mode Module setpoint controls:
Auto mode
-
(RUN only)
Proportional pressure Maximum head
Constant pressure Maximum head
Constant speed
Speed
(RPM)
Free 5
-
(Web interface only)
Night mode 6
-
(RUN only)
4.3 Module mode selection
1 Not all inputs are available in all modes.
2 External and Modbus Stop signals become active in night mode. Due to possible confusion, use of night mode is
discouraged while using external control.
3 Only available when pump is bus controlled.
4 Not available when pump is bus controlled.
5 Multiple limits can be set. Not available on all pumps.
6 Night mode is not independent regulation mode.
A