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With this function the selected digital output (P4/P6
and FR4/FR6) follows the digital output of the valve
on/off (digital output VA).
Function By-pass valve:
With this function the selected digital output (P4/P6
and FR4/FR6) can switch a valve see also par. 3-14
Function RDP alarm O/P:
With this function the selected digital output (P4/P6
and FR4/FR6) gives an alarm when the run-dry
protection is activated, this is only applicable for run-
dry contacts by float-switch or suction pressure
transmitter.
See also par. 3-3-2 Inlet (switch or pressure).
Function Low water level:
With this function the selected digital output (P4/P6
and FR4/FR6) gives an alarm when the run-dry
protection is activated, this only applicable for run-dry
contact level transmitter.
See also par. 3-3-2 Inlet (valve on/off/ valve prop.).
Output Par. 3-8-2-7 Operation/Fail Relay
The function of the digital outputs are only available
with par. 3-4-3-1 Communication PumpDrive 2.
Function: On/Off
Digital output of J602 P1/P2/P3 and J104 P4/P5/P6
are used for an external VFD running signal.
Digital output of J601 P1/P2/P3 and J103 P4/P5/P6
are used for an external VFD failure signal. (See
figure 37 Megacontrol Lay-out 1-3 (1-6) pumps)
Output Par. 3-8-2-8 Conf. FR AO
If this output isn’t used for par. 3-3-3 Discharge VFD
changeover you can connect an analogue input to
this analogue output or the system load to this output.
Function: System pressure:
The signal 4-20 mA of the discharge pressure
transmitter is available to the output and can be used,
for instance in a BMS, to indicate the discharge
pressure (4-20 mA) at a distance.
Function: Inlet pressure:
The signal 4-20 mA of the suction pressure
transmitter is available to the output and can be used,
for instance in a BMS, to indicate the inlet pressure
(4-20 mA) at a distance.
Function system load:
The system load is as 4-20 mA available, for instance
in a BMS, for an indication of the pumps that are
running.
Function level height:
The signal 4-20 mA of the level transmitter is
available to the output and can be used, for instance
in a BMS, to indicate the level pressure (4-20 mA) at
a distance.
Output Par. 3-8-2-10 Conf. Valve AO
If this output isn’t used for par. 3-3-2 Level on/off or
Level prop. you can connect an analogue input to this
analogue output or the system load to this output.
Function: System pressure:
The signal 4-20 mA of the discharge pressure
transmitter is available to the output and can be used,
for instance in a BMS, to indicate the discharge
pressure (4-20 mA) at a distance.
Function: Inlet pressure:
The signal 4-20 mA of the suction pressure
transmitter is available to the output and can be used,
for instance in a BMS, to indicate the inlet pressure
(4-20 mA) at a distance.
Function system load:
The system load is as 4-20 mA available, for instance
in a BMS, for an indication of the pumps that are
running.
Function level height:
The signal 4-20 mA of the level transmitter is
available to the output and can be used, for instance
in a BMS, to indicate the level pressure (4-20 mA) at
a distance.
Pump changeover par. 3-13:
The function pump changeover is only applicable if
par. 3-3-3 Discharge Fixed speed is selected.
When a pump is running continuously for instance
circulation systems) the pump will switch over after a
certain time (see par. 3-6-4 max run time) You can
choose how the running pump must switch off.
Par. 3-13-1
Function underpressure:
Running pump must switch off before the 2e pump
switch on (pressure drop is possible) delay time via
Par. 3-13-2 Change over delay
Function overpressure:
Running pump must switch off after the 2e pump has
switched on (pressure overshoot) delay time via Par.
3-13-2 Change over delay
Peak load pump par. 3-6-15:
Summary of Contents for Megacontrol Series
Page 1: ...Control units Installation and operating instructions Series Megacontrol ...
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